ANCHORS AND ANCHOR TOOLS - C3 GROUP Ltd · PDF filement point at ground line, ... anchor to a...

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ANCHORS AND ANCHOR TOOLS

© Copyright 2004 HUBBELL / CHANCE — CENTRALIA, MO 65240

SECTION Bvisit http://www.hubbellpowersystems.com

E-mail: [email protected]: 573-682-5521 Fax: 573-682-8714

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CATALOG OF ANCHORS

INDEXB-3 & 4 Power-Installed Screw Anchor (PISA®) DevelopmentB-5 The Science of Selecting AnchorsB-6 Anchor Application Information (Soil Classification Data Chart)B-7 Power-Installed Screw Anchors

(Holding-Capacity/Installing-Torque Charts)B-8 TOUGH ONE® Anchor Helix Assemblies - Small Hub

(Torque Ratings: 10,000 ft.-lb. & 8,000 ft.-lb)B-9 TOUGH ONE® Anchor Helix Assemblies - Large Hub

(Torque Ratings: 15,000 ft.-lb. & 8,000 ft.-lb)B-10 Standard & Mid-Strength PISA® Anchor Helix Assemblies

13/8"-Core (Torque Ratings: 4,000 ft.-lb. & 6,000 ft.-lb.)B-11 PISA® 6 and PISA® 7 Anchor Helix Assemblies

11/2"-Core (Torque Ratings: 6,000 ft.-lb. & 7,000 ft.-lb.)B-12 PISA® Anchor Rods, Eyenuts and CouplingsB-13 RR (Round-Rod) Screw AnchorsB-14 SS (Square-Shaft) Screw AnchorsB-15 High-Strength SS Screw Anchors for Heavy Tension LoadingB-16 Industry Standards for Multi-Helix AnchorsB-19 No-Wrench Screw AnchorsB-20 “Bust” Expanding AnchorsB-21 Cross-Plate AnchorsB-22 Anchor RodsB-23 Expanding Rock AnchorsB-24 Expanding Pole Key AnchorsB-25 Corrosion-Resistant AnchorsB-26 Bumper Posts

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During 1959, after many years of engineering research and testing, Chance introduced a newpatented system of utilizing the power of digging equipment to install screw anchors. The result wasthe first Chance Power Installed Screw Anchor (PISA®), the PISA® 4.

The system consists of a screw anchor, anchor rod and a special installing wrench. Each anchor hasa galvanized steel threaded anchor rod with an upset hex; single or twin helices welded to a squaresteel hub by shielded arc electric weld, and a galvanized forged steel guy wire eye nut which isscrewed to the anchor rod end.

With the anchor wrench attached to the Kelly bar or auger flight of the digger and with a lockingdog arrangement holding the anchor rod in place, the PISA® anchor installs in eight to 10 minutes.The anchor may be installed with either 31/2-foot rod or the standard seven-foot rod. A combinationof either the 31/2 or 7-foot rods may be used. Recommended maximum installing depth is 14-feetbecause tool recovery is difficult beyond this depth.

The early PISA® 4 anchor with its 13/8-inch hub was limited to semi-plastic soils, so Chance engineersdesigned the PISA® 5 anchor with a 11/2-inch hub for use in a greater cross-section of soils. AdditionalPISA® anchor designs followed, such as the PISA® 5-GT anchor and 7-GT anchor. Through Chancetesting and close contact with utilities, the PISA® anchor family was expanded. Power-installedtransmission anchors were introduced for high torque applications during the early 1960s. During1980, Chance again advanced the science of anchoring by introducing a patented 10,000 foot-poundanchor series called, “SQUARE ONE® anchors.” Unlike previously introduced PISA® anchor designs,the high-strength SQUARE ONE® anchor series was driven by a wrench which slides into the hub ofthe anchor. The same drive wrench can be used to drive standard-strength and mid-strength seriesanchors. In 1990, Chance introduced the TOUGH ONE® family of 15,000 foot-pound anchors. TOUGH

ONE® anchors were cast steel with no welds. The 13/8-inch Chance installing wrench will install allChance PISA® anchors to 10,000 foot pounds. For TOUGH ONE® anchor installations above 10,000 footpounds, you will need the high-strength TOUGH ONE® wrench system from Chance.

Throughout the years, Chance engineers have conducted anchoring tests in conjunction withcustomer utilities. This has given customers a better opportunity to select the type of anchoringsystems best suited to their particular needs. As a result, Chance anchors have earned an excellentreputation, making it possible for Chance to develop and improve new anchoring systems to meetthe demands of utility companies throughout the world.

POWER-INSTALLED SCREW ANCHOR (PISA®) DEVELOPMENT

SIDE-BY-SIDE TESTS REVEAL PISA'S CLEAR SUPERIORITY

The basic reason for installing an anchor is to provide a load-attach-ment point at ground line, so it is important that the anchor have thenecessary holding capacity. Field tests have shown that screw anchorsnormally hold greater loads than larger-size expanding anchors. Theseexamples underscore this point. The graphs represent an 8-wayexpanding anchor and a power-installed screw anchor tested whereconditions — date, soil, location, installation, and test crew, etc. — wereas nearly equal as possible.

CHANCE CAT. NOOR DESCRIPTION

88135

X-16

PISA® WhichWill ProvideEqual orGreater HoldingCapacity

CHANCE SOIL CLASS6

15,000

14,500

12"or

2-8"(5/8" Dia. orLarger Rod)

5

18,500

18,500

12"or


Predicted ultimate holding capacities are based on results of extensive Chance tests and interpretation and are offered asan application guide only. They do not represent a guarantee of holding capacity in a particular soil class. User must factorin his individual, appropriate safety factor.

7

10,000

9,500

12"or


4

22,000

22,500

12"or


3

26,500

26,500

12"or

2-8"(1" Dia. Rod)

*

ExpandingAnchorCrossPlate

Anchor

PISA® Selection Guide For Replacing PopularExpanding & Cross Plate Anchor Designs

ULTIMATE ANCHOR HOLDING CAPACITY* - POUNDS

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Predicted ultimate holding capacities are based on results ofextensive Chance tests and interpretation and are offered asan application guide only. They do not represent a guaranteeof holding capacity in a particular soil class. A user mustfactor in his individual, appropriate safety factor. Torquevalues shown are steady values in homogenous soils, notpeak values that might occur in non-homogenous soil. Torquevalues shown were obtained by averaging readings from thelast 2 feet of anchor penetration.

Power-Installed Screw Anchors (PISA®)Holding Capacity/Installing Torques

CAUTION: ALL COMPONENTS OF THE CHANCE AN-CHORING SYSTEM ARE PERFORMANCE MATED. USEOF OTHER ANCHORING PRODUCTS OR EQUIPMENTWILL NOT NECESSARILY PRODUCE THE SAME RE-SULTS.TOUGHE ONE® screw anchor covered by U.S. Patents 5,607,261and 5,575,122.

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The Science of Selecting AnchorsSoil Mechanics and Holding CapacityDuring the early stages of the screw anchor, the load resis-tance of an installed anchor could not be predicted withreasonable accuracy. Specific information on soil conditionswas lacking, making anchor selection more or less a guess.With little consideration for soil variations and the effects ofseasonal weather changes or drainage, soils were classifiedas "sand, clay, hardpan or swamp." There wasn't any defini-tive explanation for such soil conditions.

Chance soil classification data opened new horizons in pre-dicting anchor holding capacity. Initially, it was necessary toobtain soil samples from the projected anchor depth in orderto classify the soil and to make anchor recommendations.However, this method was inconvenient, costly and time-consuming.

PISA®: Power-Installed Screw AnchorsMore than 30 years ago, Chance introduced this patentedsystem of utilizing the power of digging equipment to installscrew anchors. The system consists of a screw anchor, anchorrod and a special installing wrench. Each anchor has agalvanized steel threaded anchor rod with an upset hex;single or twin helices and a galvanized guy wire nut which isscrewed to the anchor rod end. PISA anchors can be installedin a matter of minutes.

Torque and PerformanceLater this method was improved with the development ofChance torque indicators and sets of holding capacity valuesfor given anchor types. This did not obviate the soil classifi-cation data but strengthened and simplified it so the utilityemployee could install a PISA® anchor or other Chanceanchor to a given torque value and predict with relativeaccuracy the holding capacity of the installed anchor. Actu-ally, the correlation between installing torque and anchorperformance required thousands of tests throughout theUnited States and in every conceivable soil condition. It ismuch labor, engineering research and investment that havemade possible the development of this reliable and predict-able anchoring philosophy.

Torque RatingsChance screw anchors are designed and manufactured formaximum torsional strength. During installation, some ofthe torque applied by the digger and measured by installa-tion torque indicators is dissipated by friction along thewrench and not applied to the anchor itself, so it is possibleto apply more torque than the anchor alone can withstand.Chance anchors are rated by maximum working torque or,for the more recent designs, by the 5 per cent exclusion limitwhich is a more explicitly defined criterion based on statisti-cal analysis of on-line quality control testing. Both ratingstake into consideration the variation to be expected in anchortorsional strength due to normal variations in materials andmanufacturing processes. Customers should consider thisvariation along with the wide variation that can be seen inthe frictional loss along the wrench in deciding how muchtorque can be applied safely during installation. The fact thatChance ratings are set near the minimum credible torsionalstrength also should be considered in comparing Chanceratings to those of manufacturers who rate their anchorsbased on average strength.

Soil Probe, A Logical DevelopmentChance engineers developed the "soil test probe", a mechani-cal tool which makes it possible to infer subsoil conditionsfrom the surface of the earth. The soil test probe is screwedinto the soil. As it displaces the soil, probe installation torqueis measured in inch-pounds on a torque gauge, which is anintegral part of the installing tool. Probe torque readings arethen compared with the information on the Chance SoilClassification Data Chart and translated into the appropri-ate soil classification.

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Anchor Application Information

Common Soil-Type DescriptionSound hard rock, unweatheredVery dense and/or cemented sands;coarse gravel and cobblesDense fine sands; very hard siltsand clays (may be preloaded)Dense sands and gravel;hard silts and claysMedium dense sand and gravel; verystiff to hard silts and claysMedium dense coarse sands and sandygravels; stiff to very stiff silts and claysLoose to medium dense fine to coarsesands to stiff clays and siltsLoose fine sands; Alluvium; loess;medium - stiff and varied clays; fillPeat, organic silts; inundated silts, fly ashvery loose sands, very soft to soft clays

Class01

2

3

4

5

6

**7

**8

Geological Soil ClassificationGranite, Basalt, Massive LimestoneCaliche, (Nitrate-bearing gravel/rock),

Basal till; boulder clay; caliche;weathered laminated rockGlacial till; weathered shales, schist,gneiss and siltstoneGlacial till; hardpan; marls

Saprolites, residual soils

Dense hydraulic fill;compacted fill; residual soilsFlood plain soils; lake clays;adobe; gumbo, fillMiscellaneous fill, swamp marsh

ProbeValuesin.-lb.(NM)N.A.

750 - 1600(85 - 181)600-750(68 - 85)500 - 60056 - 68

400 - 500(45 - 56)300 - 400(34 - 45)200 - 300(23 - 34)100 - 200(11 - 23)

less than 100(0 - 11)

TypicalBlow Count

"N" perASTM-D1586

N.A.60-100+

45-60

35-50

24-40

14-25

7-14

4-8

0-5

Class 1 soils are difficult to probe consistently and the ASTM blow count may be of questionable value.**It is advisable to install anchors deep enough, by the use of extensions, to penetrate a Class 5 or 6, underlying the Class 7 or 8 Soils.

SOIL CLASSIFICATION DATA

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POWER-INSTALLED SCREW ANCHORS (PISA®)Holding Capacity/Installing Torques

Predicted ultimate holding capacities are based on results of exten-sive Chance tests and interpretation and are offered as an applica-tion guide only. They do not represent a guarantee of holdingcapacity in a particular soil class. A user must factor in his indi-vidual, appropriate safety factor. Torque values shown are steadyvalues in homogenous soils, not peak values that might occur in non-homogenous soil. Torque values shown were obtained by averagingreadings from the last 2 feet of anchor penetration. The anchor shaft

must be aligned with the guy load to prevent premature failure of therod. Under no circumstance should the rod and guy strand join at anangle of departure exceeding ± 10°.

CAUTION: ALL COMPONENTS OF THE CHANCE ANCHORINGSYSTEM ARE PERFORMANCE MATED. USE OF OTHER AN-CHORING PRODUCTS OR EQUIPMENT WILL NOT NECESSAR-ILY PRODUCE THE SAME RESULTS.

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TOUGH ONE® ANCHOR HELIX ASSEMBLIESTORQUE RATINGS: 10,000 FT.-LB., AND 8,000 FT.- LB.

Small Hub (21⁄4" Square Inside)

Use high-strength10,000 ft-lb.TOUGH ONE® anchorin hard soils .

10" dia.C102-5209C102-5205

14" dia.C102-5207

Std. Pkg./ Pallet4/964/96

Std. Pkg./ Pallet2/40



8" Dia.C102-5208C102-5204

12" Dia.C102-5206

For 5⁄8" dia. RodFor 3⁄4" & 1" dia. Rods

For 3⁄4" & 1" dia. Rods

10,000 ft.-lb. TOUGH ONE® anchor21⁄4" Square Inside Hub

Std. Pkg./Pallet4/96


10" dia.C102-5201

14" dia.C102-5203



8" Dia.C102-5200

12" Dia.C102-5202


Patent No. 4,979,341; 4,981,000; 5,575,122; 5,607,261.

Use 8,000 ft.-lb.TOUGH ONE® anchorin soft and medium-hard soils

The C102-52-- series of TOUGH ONE® anchors have a smaller inside hub diameterthan our C102-50-- series. The smaller hub is designed to be installed with theChance anchor wrench C102-1583.

TOUGH ONE® anchors give users high-strength anchor capability in all soils. Youget a better anchor at an economical price.

The anchor's sloped lead point (Patent No. 5,575,122) improves penetration andhelps soil flow from below the hub to above the anchor.

TOUGH ONE® anchors use standard PISA® rods (see page 4-10).

Ordering Information8,000 ft.-lb. TOUGH ONE® anchor

21⁄4" Square Inside HubInstall with the Chance STANDARD (10,000 ft.-lb.) wrench (see page 4A-4).

Install with the Chance STANDARD (10,000 ft.-lb.) wrench (see page 4A-4).

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Use 8,000 ft.-lb.TOUGH ONE® anchorin soft and medium-hard soils

TOUGH ONE® ANCHOR HELIX ASSEMBLIESTORQUE RATINGS: 15,000 FT.-LB., AND 8,000 FT.- LB.

Large Hub (21⁄2" Square Inside)



10" Dia.C102-5001

14" Dia.C102-5003



8" Dia.C102-5000

12" Dia.C102-5002


Patent No. 4,979,341; 4,981,000; 5,575,122; 5,607,261.

TOUGH ONE® anchors give users high-strength anchor capabil-ity in all soils. You get a better anchor at an economical price.With TOUGH ONE® anchors, there’s little concern about anchorbreakage when encountering hard soils.

The anchor’s sloped lead point (Patent No. 5,575,122) im-proves penetration and helps soil flow from below the hub toabove the anchor.

TOUGH ONE® anchors use standard PISA® rods (see page 4-10).

It’s easy to upgrade your entire program with TOUGH ONE®

anchors.

If soil conditions require installations above 10,000 ft.-lbs.,you will need our TOUGH ONE® wrench system consisting ofdrive-end assembly, Kelly bar adapter and locking dog as-sembly. The high-strength system will also install PISA® 6and 7 anchors. See page 4A-6 for high-strength anchorinstalling wrench information.

Ordering Information8,000 ft.-lb. TOUGH ONE® anchor

21⁄2" Square Inside HubInstall with the Chance HYBRID* or TOUGH ONE® wrench (see page 4A-4 or 4A-6)

10" Dia.C102-5009C102-5005

14" Dia.

C102-5007


Std. Pkg./ Pallet

2/40



8" Dia.C102-5008C102-5004

12" Dia.C102-5010C102-5006

For 5⁄8" dia. RodFor 3⁄4" & 1" Dia. Rods

For 5⁄8" dia. RodFor 3⁄4" & 1" dia. Rods

15,000 ft.-lb. TOUGH ONE® anchor21⁄2" Square Inside Hub

Install with only the Chance TOUGH ONE® wrench system (Catalog page 4A-6)

Use high-strength15,000 ft-lb.Tough One invery hard soilsshort of solid rock.

*NOTE: The old-style HYBRID wrenches C303-1063 and C303-1064, having a collar welded aroundthe drive end, fit only PISA 6 and PISA 7 anchors.

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PISA® anchor installationtakes about 10 minutes withtwo workers.

See Pages 4-10 for ordering PISA anchor rods and eyenuts.

For 5⁄8" Dia. RodsFor 3⁄4" & 1" Dia. Rods

Catalog Number

MID-STRENGTH ANCHOR SERIES13⁄8" CORE — 6000 ft.-lbs. Typical Working Torque — Squared Helix — 3.0" Helix Pitch

SINGLE HELIX 8" Dia.E102-1629E102-1632

Std. Pkg.8/2408/240

10" Dia.E102-1630E102-1633

Std. Pkg.4/964/96

12" Dia.E102-1631E102-1634

Std. Pkg.4/804/80

14" Dia.NA

E102-1801

Std. Pkg.—

2/32

For 3⁄4" & 1" Dia. Rods

Catalog NumberTWIN HELIX 4" Dia.E102-1635

Std. Pkg.1/30

8" Dia.E102-1636

Std. Pkg.1/30

Std. Pkg.1/30

10" Dia.E102-1637


Catalog Number

Ordering Information

STANDARD-STRENGTH ANCHOR SERIES13⁄8" CORE — 4000 ft.-lbs. Typical Working Torque — Squared Helix — 3.0" Helix Pitch

SINGLE HELIX 8" Dia.024474024475

Std. Pkg.8/2408/240

10" Dia.024476024478

Std. Pkg.4/964/96

12" Dia.024462*024481

Std. Pkg.4/804/80

14" Dia.NA

P024484*

Std. Pkg.—

2/32

*RUS Accepted


Catalog NumberTWIN HELIX 8" Dia.012904

Std. Pkg.1/30

10" Dia.012905

Std. Pkg.1/30

PISA® ANCHOR HELIX ASSEMBLIESChance Standard-Strength 4,000 foot-pound anchors andMid-Strength 6,000 foot-pound anchors have curvilinearleading edges to help penetrate rocky soils and to reducedamage during installation. These anchors are available insingle and twin-helix designs. The same installing wrenchinstalls Standard and Mid-Strength anchors as well as TOUGH

ONE® C102-52- - series anchors. See page 4A-4 for installingwrench information.

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SINGLEHELIX

Chance PISA®-6 6000 foot-pound anchors and PISA®-7 7000foot-pound anchors have curvilinear leading edges to helppenetrate rocky soils and to reduce damage during installa-tion. These anchors are available in single and twin-helixdesigns.

PISA®-6 and PISA®-7 anchors have a 1-1⁄2" square solid corefor added strength. See page 4A-4 or 4A-6 for information onthe 11⁄2" installing wrench.

ORDERING INFORMATION


TWIN HELIX


11⁄2" CORE — 6000 ft.-lbs. Typical Working Torque — Squared Helix — 3.0" Helix PitchPISA® 6 anchor

PISA® 7 anchor

8" Dia.E102-0816E102-0819

Std. Pkg./Pallet8/2408/240


10" Dia.E102-0817E102-0820

Std. Pkg./Pallet—

4/80

12" Dia.—

E102-0821

Two 8" Dia.E102-0822



Two 10" Dia.E102-0823

11⁄2" CORE — 7000 ft.-lbs. Typical Working Torque — Squared Helix — 3.0" Helix Pitch


SINGLE HELIX Std. Pkg./Pallet4/96

10" Dia.E102-0250


TWIN HELIX Std. Pkg./Pallet1/30




8" Dia.E102-1223

Two 8" Dia.E102-1219

Two 10" Dia.E102-1220

Two 4" Dia.V102-1428

See Page 4-10 for ordering PISA anchor rods and eyenuts.

Catalog Number

Catalog Number

Catalog Number

Catalog Number

PISA® 6 and PISA® 7ANCHOR HELIX ASSEMBLIES

Formerly PISA “5”

Std. Pkg./Pallet—

2/32

14" Dia.—

T102-2142

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PISA® Rod & Eyenut Combinations

Catalog Number

Std. Pkg./Pallet30/75030/120025/1000

Tripleye®

1259312585

12585H

Std. Pkg./Pallet30/97530/120025/1000

Twineye®

125896562

6562H


N/A

For 5⁄8" Dia. RodsFor 3⁄4" & 1" Dia. RodsFor 1" Dia. H.S.

EYENUTThimbleye®

12587*6512*N/A

PISA® ANCHOR RODS,EYENUTS AND COUPLINGS

Protected Rod for PISA® Anchors

COUPLINGFor 5⁄8" Dia. RodsFor 3⁄4" & 1" Dia. Rods

NOTE: Couplings are required only when it is necessary to add additionalrods of 31⁄2 ft. or 7 ft. to form an extension.

Std. Pkg./Pallet

60/195050/2400

CatalogNumber12245P12247P

31⁄2 ft. ROD

Std. Pkg./Pallet5/505/505/50

Cat. No.12249A12250A12251A

PISA®

EXTENSIONROD

W/ COUPLING5⁄8" Dia.3⁄4" Dia.1" Dia.

*RUS Accepted.† Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lower strength.

Cat. No.C102-1996C102-2061

FitsRod Size1" x 7"

1" x 31⁄2'

ApproxWt./100 pcs.

19001002

ROD31⁄2-ft. ROD 7-ft. ROD

Cat. No.12332P*12632P*12334P

C102-1986

Std. Pkg./Pallet5/505/505/505/60

Std. Pkg./Pallet5/505/502/502/50

UltimateStrength †16,000 lbs.23,000 lbs.36,000 lbs.50,000 lbs.

5⁄8" Dia.3⁄4" Dia.1" Dia.1" Dia. H.S.

Cat. No.12336P12634P12338P

C102-1987

A

C

D D

For 5/8" Dia. RodsFor 3/4" & 1 Dia. Rods

B

R

THIMBLEYE® NUTSB

C

R

DA

(For 3⁄4" & 1 dia.)(For 5⁄8" dia.)

R

B

C

A D

Catalog No.

E102-0031E102-0047E102-0035E102-0043E102-0051

E102-0032E102-0040E102-0036E102-0044E102-0052

E102-0033E102-0041E102-0049E102-0037E102-0045E102-0053

Rod, Eyenut5⁄8" x 31⁄2', Rod & Thimbleye Nut5⁄8" x 31⁄2', Rod & Tripleye Nut5⁄8" x 7', Rod & Thimbleye Nut5⁄8" x 7', Rod & Twineye Nut5⁄8" x 7', Rod & Tripleye Nut3⁄4" x 31⁄2', Rod & Thimbleye Nut3⁄4" x 31⁄2', Rod & Twineye Nut3⁄4" x 7', Rod & Thimbleye Nut3⁄4" x 7', Rod & Twineye Nut3⁄4" x 7', Rod & Tripleye Nut

1" x 31⁄2', Rod & Thimbleye Nut1" x 31⁄2', Rod & Twineye Nut1" x 31⁄2', Rod & Tripleye Nut1" x 7', Rod & Thimbleye Nut1" x 7', Rod & Twineye Nut1" x 7', Rod & Tripleye Nut

For 5/8", 3/4"&1 Dia. Rods

TWINEYE® NUTS

B

225/64"

R

5/16"

A

113/32"

D

11/2"

C

127/64"

R1/4"

13/32"

C13/8"

119/32"

D111/64"15/8"

B17/8"

225/64"

A7/8"

11/8"For 5/8", 3/4"&1 Dia. Rods

TRIPLEYE® NUTS

B

213/16"

A

13/4"

C

15/8"

D

11/2"

R

1/4"

Corrosion-Protected PISA® Rod

B-13

RR (ROUND-ROD)SCREW ANCHORS

*Note: Ultimate tension capacity may be limited to the tension strength of the lead section and extension.

The Round-Rod "RR" multi-helix anchors are used in areaswhere weak soil conditions exist and moderate holding capaci-ties are required. All helix lead sections are 7' long. Extensionshafts may be required for installation to proper depth.

RR screw anchors consist of three galvanized components: the

lead section, the extension shaft, which includes an integral coupling,and the guy adapter. The extensions and guy adapters include a high-strength bolt and nut.

Typical working torque is 2300 ft.-lb. and minimum-ultimate mechani-cal tension strength is 70,000 lb.

EXTENSIONS

LEAD SECTIONS

GUY ADAPTERSCatalog No.C102-0023C102-0024C102-0025C110-0026C110-0041

Extensions with helices are available. Contact your Hubbellrepresentative or ServiCenter for information.

Catalog No.012690AE012690AEJV109-0007V109-0006

Length7 ft.7 ft.7 ft.7 ft.

See page 4A-4 and 4A-8 for installation tool options.

Helix Combinations8" - 10"

8" - 10" - 12"10" - 10" - 10"

10"

Std. Pkg./Pallet1/201/201/151/20

Nominal length31⁄2 ft.5 ft.7 ft.

10 ft.

Std. Pkg./Pallet1/501/501/301/50

Catalog No.12696126971269812699

Nominal length18"18"18"20"18"

DescriptionThimbleye®

Twineye®

Tripleye®

Threaded StudOvaleye

Std. Pkg./Pallet5/1755/2505/2505/1305/200

“RR”TYPICAL DRIVE STRING

Drive Tool

TorqueIndicator(Optional)

Kelly Bar

Kelly BarAdapter

MULTI-HELIX ANCHOR LOAD CAPACITY CHARTSDetermining load conditions and site subsurface conditions is the responsibility of the customer. This information along with the design charts hereincan help in selecting the appropriate helix configuration. Pertinent assumptions are stated on the design charts. The charts present functions interms of ultimate anchor capacity. Allowable loads should be determined by applying an appropriate safety factor. The proper shaft size must beselected to ensure both tension capability and installability.

RR and SS Anchors/Non-Cohesive Soil* RR and SS Anchors/Cohesive Soil*

Lead SectionExtension

Guy Adapter

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Note: Holding capacities are based on average test data and are offered as an application guide only.*RUS Accepted.

Square Shaft 'SS" Anchor Combinations

CatalogNumber12654-3AE12654-3EJ12654-3AEJ12654-3EJN12654-3EJNS

Numberof Helices

22334

Anchor Helix Dia.(BottomTop)

8" - 10"10" - 12"

8" - 10" - 12"10" - 12" - 14"

10" - 12" - 14" - 14"

Catalog Number includes helix section of anchor and TRIPLEYE® guyadapter. For THIMBLEYE® guy adapter, change the suffix "3" to "1" (i.e.:12654-1AE).For TWINEYE® guy adapter, change the suffix "3" to "2" (i.e.: 12654-2AE).For Ovaleye guy adapter, change the suffix "3" to "4" (i.e. 12654-4AE).

Helix and extension shafts are banded to wood blocks to facilitateforklift handling. Guy adapters are shipped in corrugated cartons.

Catalog No.C102-0023C102-0024C102-0025C110-0026C110-0041

Nominal Length18"18"18"20"18"

DescriptionTHIMBLEYE®

TWINEYE®

TRIPLEYE®

Threaded StudOvaleye

Std. Pkg./Pallet5/1755/2505/2505/1305/200

GUY ADAPTERS

** Note: Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lowerstrength.

EXTENSIONS

Nominal Length31⁄2 ft.5 ft.7 ft.10 ft.5 ft.

Std. Pkg./Pallet1/501/501/401/501/12

Catalog No.12655126561265712658

†12656N

†Note: 5 ft. SS Extension with 1-14" Helix.

See page 4-11 for anchor holding strengths vs standard penetrationtest and unconfined compression test values.

See pages 4A-4 and 4A-8 for installation tool options.

Lead SectionExtension

Guy Adapter

Square-Shaft "SS" multi-helix screw anchors are designed for heavy-guy loading. They have 1-1/2" square steel shafts.Extension shafts must be coupled to the helix section for installation to the proper depth. SS screw anchors consist of threegalvanized components: the lead section, the extension shaft, which includes an integral coupling, and the guy adapter. Theextensions and guy adapters include a high-strength bolt and nut. Typical working torque is 5500 ft.-lb. and minimumultimate tension strength is 70,000 lb. **

For Heavy-Guying Applications

SS (SQUARE-SHAFT) SCREW ANCHORS

Catalog No.012642-AE*012642-EJ012642-AEJ*012642-EJN*012642-AEJN012642-EJNS*

Helix Combinations8" - 10"10" - 12"

8" - 10" - 12"10" - 12" - 14"

8" - 10" - 12" - 14"10" - 12" - 14" - 14"

Length3 ft.

31/2 ft.51/2 ft.7 ft.

101/2 ft.101/2 ft.

Std.Pkg./Pallet1/201/201/201/201/201/20

Class 719,00021,00026,00029,00031,00040,000

Class 623,00026,00032,00037,00040,00051,000

Class 527,00031,00039,00045,00049,00062,000

Class 336,00041,00051,00061,00067,000

Class 432,00036,00046,00053,00058,00070,000

Class 241,00046,00058,00069,000

LEAD SECTIONS

APPLICATION AND ORDERING INFORMATION

Soil Anchor Holding Strengths - (lb.)vs. Chance Soil Class

B-15

RATINGS

MechanicalPropertiesMax. Installation TorqueMin. UltimateTension Strength

SS 1501.50" Square Shaft

7,000 ft.-lb.

70,000 lb.


10,000 ft.-lb.

100,000 lb.


15,000 ft.-lb.

150,000 lb.


20,000 ft.-lb.

200,000 lb.

LEAD SECTIONS

Helix Configuration

8" & 10"6", 8" & 10"8", 10" & 12"14", 14" & 14"8", 10", 12" & 14"

Galv.C110-0385

C110-0386C110-0504

Non-Galv.C114-0014

C114-0015C114-0149C114-0100

L1

30"

57"120"120"

SS 150L1

30"

60"124"124"

SS 175Galv.

C110-0569C110-0570C110-0572C110-0573

Non-Galv.

C114-0214C114-0215C114-0216C114-0217

L1

60"60"

122"122"

SS 200Galv.

C110-0543C110-0544C110-0545C114-0189

Non-Galv.

C114-0187C114-0188C114-0190C114-0189

L1

54"75"

114"115"

SS 225

Helix Configuration

NoneNoneNoneNoneSingle 14" helixTwin 14" helicesTriple 14" helices

Galv.C110-0388C110-0470C110-0389C110-0440C110-0471C110-0454C110-0475

Non-Galv.C114-0016C114-0104C114-0017C114-0080C114-0108C114-0058C114-0112

L2

37"59"80"

122"48"80"

123"

SS 150L2

37"59"80"

124"48"80"

124"

SS 175L2

37"58"80"

123"45"80"

123"

SS 200Galv.

C110-0645C110-0646C110-0647

C110-0650C110-0652

Non-Galv.C114-0243C114-0244C114-0245

C114-0238C114-0252

L2

40"60"80"

120"39"78"

120"

SS 225

EXTENSIONS

TERMINATION ADAPTERS

Thimpleye AdapterTwineye AdapterTripleye AdapterOvaleye AdapterThreaded AdapterChain Shackle

Non-Galv.

L5=131⁄2L4=11⁄2

L3

17"17"17"17"20"51⁄8"

SS 150Galv.

★T110-0311

★T110-0465

★T110-0352*T110-0134

Non-Galv.

L5=36"L5=1 13⁄16

L3

17"

17"

48"65⁄8"

SS 175Galv.

C110-0557

Non-Galv.

L4=21⁄4"

L3

17"

81⁄4"

SS 200Galv.

C110-0558

Non-Galv.

L4=23⁄8"

L3

9"

SS 225

Galv.C110-0136C110-0137C110-0138C110-0140C110-0472C110-0450C110-0476

Non-Galv.C114-0022C114-0105C114-0023C114-0081C114-0109C114-0057C114-0113

Galv.C110-0563C110-0564C110-0565C110-0566C110-0577C110-0581C110-0586

Non-Galv.C114-0209C114-0210C114-0211C114-0212C114-0220C114-0224C114-0231

*T110-0352 includes two nuts.†TRIPLEYE® shackle


Lead Section Lead Section Plain Extension Single HelixExtension

Two HelixExtension

L1 L1 L2

L2 L2

HIGH-STRENGTH SS ANCHORSfor Heavy Tension Loading

OvaleyeAdapter

L3

ChainShackle

L3

L4

TRIPLEYE®

ChainShackle

L3

L4

Galv.C102-0023C102-0024C102-0025C110-0041C110-0026

†C110-0574

Galv.C110-0227

C110-0235C110-0505C110-0247

Non-Galv.C114-0020

C114-0021C114-0084C114-0101

Socket ★ClevisTRIPLEYE®

Adapter

L3

SocketTWINEYE®

Adapter

Socket ★ClevisTHIMBLEYE®

Adapter

L3 L3 L3 L3L5 L3

L3L5

★Clevis fitting. Others have Socket fitting.

Socket ★ClevisThreadedAdapter

B-16

12

State-of-the-Art:

♦ HELICAL ANCHORS & FOUNDATIONS ♦

www.hubbellpowersystems.com

T

Industry Standards

R&D history of inter-helix spacingtraces application of technical principles

he helical screw anchor is not asophisticated product in the 21stcentury of cell phones, theInternet and High-Definition TV.

A low-tech product in a high-tech world,it continues to serve ever-expanding rolesfor utilities and in civil construction. Infact, the screw anchor’s elegant simplicityis its greatest asset: An uncomplicatedproduct with multiple uses.

Historical Perspective:Low-tech to high-tech designs

Answers to FAQs(Frequently Asked Questions):This array of screw anchor types has led many toask why so many? What requirements or designconstraints have led to their current forms?Can the current design be improved?In the case of multi-helix screw anchors,particularly Type SS, how far apart should thehelix plates be spaced along the shaft? Is there anoptimum spacing that provides the best performancein terms of installation and load carrying capacity?Answering these questions requires looking backover some 40 years to just before Chance developedType SS screw anchors.

Yet each different anchor type servesdifferent applications. And new usesseemingly come to light every day.

1. At least one helicallyshaped bearing plate,

2. A central steel shaft,

3. An appropriate structuralconnection at the top.

Introduced in 1959, PISA anchors were wellknown and in widespread use by the early1960’s. They were available in single andtwin-helix configurations (twin 8" and twin10"). Their inter-helix spacing changed oftenover the years, but always has been in the15- to 30-inch range. Their standard rod length was7 ft. As the following quote from the 1966 edition ofthe Encyclopedia of Anchoring indicates, the chiefadvantage of multi-helix anchors was already known:“Installed in place of larger single helix Type PISA.Higher holding powers can be obtained with the twohelix anchors.”

Where two helices are better than one, logicindicates three or more helices would be better thantwo. This reasoning was put to good use in 1961,when Chance developed extendable Type RRmulti-helix anchors. The original applicationfor multi-helix RR anchors was as tiedownsfor underground pipelines in poor soilconditions along coastal regions of the Gulfof Mexico. Type

based on CHANCE®

multi-helix anchor specs

Helical screw anchors may be simple inconcept, but they come in many forms. Takeout your copy of the CHANCE® Encyclopediaof Anchoring and look through the AnchorProduct Section. It shows you these types:PISA® (Power Installed Screw Anchors),Tough One®, Square-Shaft (or SS), Round-Rod (or RR), and No-Wrench screw anchors.If you also have an Chance Civil ConstructionSA Catalog, you can find Types HS, T/C,Street Light Foundations (SLF), Area Lighting

Foundations (ALF), and HELICALPULLDOWN™ Micropiles (HPM). These

anchor types all have three things in common:

NEWS Reprinted from Vol. 8, No. 1 APRIL 2003&TiPS

B-17

FIGURE1

Stress DistributionBeneath Deep Buried

Circular Plate

RR anchors worked well in weak surficial soils, but their11⁄4" diameter shaft did not provide enough torquestrength to penetrate very far into firm bearing soils.

Development of a high torque multi-helix anchor began in1963, culminating in Chance’s introduction of Type SS11⁄2" square shaft multi-helix anchors in 1964-65.

Inter-helix spacing was 36" for both Types RR and SSanchors. Why 36 inches? Remember that the 7-ft. lengthof standard PISA rods was established as a length for aworker to reach when using the wrench-driven PISAsystem. Since Types RR and SS anchors also were drivenby tooling attached to a torque motor, this same practicallength applied to them as well.

Based on proportion, three helices equally spaced 36" apartfit well on a 7'-0" shaft. Using the same 36" spacing, twohelices were placed on a 5'-0" shaft (for bed-mounteddiggers) and four helices were placed on a 10'-0" shaft. Thethree helix configuration quickly became the most popularType SS lead section and remains so today. Three-foot(36") spacing remained the norm for Types RR and SS, aswell as for HS-8, HS-11, and HS-14 High-Strength guyanchors developed later in the 1960s.

Geotechnical science evolves changesIn the 1970s and early 1980s, a gradual change in thedesign philosophy at Chance eventually led to changes ininter-helix spacing. Adopting generally acceptedgeotechnical engineering principles, it was recognized thata deep buried plate (i.e., screw anchor helix) transferred an

applied load to the soil in end bearing (bearing capacitytheory).

This transfer of load results in a “stress zone” within adefined soil volume immediately above or below thehelix depending on the direction of the load (tension -above helix, compression - below helix). A necessarycondition for this method to work is that the helicesmust be spaced far enough apart to avoid overlappingtheir stress zones.

The Boussinesq (circa 1885) Equation has described thestress distribution in soil resulting from a load appliedvia a buried plate/footing as shown in Figure 1. For amulti-helix anchor installed into uniform, homogeneoussoil, spacing helix plates too close together can result inoverlapping stress distributions, which may lead tounexpected failure.

Likewise, spacing helix plates too far apart prevents soilstress overlap, but results in a screw anchor that isunnecessarily long. As can be seen in Figure 1, themagnitude of stress one diameter away from the buriedplate is 28% the magnitude of stress at the plate. Notethe magnitude of stress three diameters away from theburied plate is only 4% the magnitude of stress at theplate. Greater distance from the plate results in stressmagnitude reduction, but at a significantly reduced rate.

What inter-helix spacing is optimum?The Boussinesq Equation suggests a spacing of three-helix diameters as a practical solution based on stressdistribution. The design question posed by the abovediscussion also has been answered by two other acceptedprinciples.

The bearing capacity theory (Figure 2, plate bearingmodel) suggests the capacity of a multi-helix screwanchor is equal to the sum of the capacities of theindividual helix plates. Calculating the unit bearingcapacity of the soil and multiplying by the individualhelix areas determine the total end-bearing capacity.

B= PlateDiameter

FIGURE3

CylindricalShearModel

Homogeneous,NormallyConsolidated Clay

soil surface

q =DistributedLoad

StressDistribution

B

1B

2B

3B

Q

0.28q

0.09q

0.04q

FIGURE2

Plate BearingModel

B-18

With the introduction of Chance Type SS150, SS175, SS200, and SS225 High Strength SS Anchors in the late1970’s and early 1980’s, helix plates were located on the shaft using three-helix-diameters spacing. Type HSanchors were changed to this spacing in 1986. The standard-strength SS, known as the SS5 series, remained at36 inch spacing until 1997, when it also was updated to the industry standard of three-diameters spacing, nowcommon to other Chance shaft-driven multi-helix screw anchors.

The key is to space the helix plates just far enough apartto maximize the bearing capacity of a given soil.This works to reduce the overall length of the anchorand increases the likelihood for all helix plates to belocated in the same soil layer. This leads to morepredictable torque-to-capacity relationships and bettercreep (movement under load) characteristics.

Today, Chance manufactures helical screw anchorswith three-helix-diameters spacing, the space between

INDUSTRY STANDARDA Definition: Three-helix-diameter spacing – The optimum space between any two helical plates on a screwanchor is three times the diameter of the lower helix.

any two helices being three times the diameter of thelower helix. This is the optimum spacing thathistorically has been sufficient to prevent one helixfrom significantly influencing the performance ofanother, while at the same time preventing thepreviously mentioned disadvantages of spacing helicestoo far apart.

It is important to understand that soils generally arenot homogeneous mixtures exhibiting uniformstrength properties. Spacing helix plates unnecessarily

individual bearing capacityindependent of spacing

cylindrical shear

capacity α spacing3QH

2QH

QH

1 2 3 4 5 6

Pul

lout

Cap

acity

QH = Pullout capacity of a single helixS = Helix SpacingD = Helix Diameter

FIGURE 4Pullout Capacity of 2-Helix Anchor vs Helix Spacing

The cylindrical shear theory (Figure 3,cylindrical shear model) suggests thecapacity of a multi-helix screw anchor isequal to the bearing capacity of the top-most helix (tension load), plus the frictioncapacity resulting from the shear strengthof the soil along a cylinder bounded bythe top and bottom helix with a diameterdefined by the average of all helixdiameters on a multi-helix anchor.

Both cylindrical shear and individual bearingrepresent permissible failure mechanisms forany inter-helix spacing, therefore the ultimatecapacity associated with them are upperbounds of the actual ultimate capacity at allspacings (see Figure 4). At “small” spacings,cylindrical shear is the least upper bound andcontrols capacity, per the Least Upper-BoundTheorem. At “large” spacings, individual

Industry Standard derived from CHANCE® three-diameters spacingfar apart increases the possibility that one or more ofthem will not be located in the same soil layer as theothers.

bearing becomes the least upper bound and controls capacity.

To determine where the transition occurs from cylindrical shear to indivdual bearing, data from late 1970’s fieldtests were analyzed. The interpreted results indicate that the transition spacing is about three diameters, as isindicated in Figure 4. This is consistent with the performance of multi-belled concrete piers (Bassett, 1977) andwith the fact that the cylindrical shear and individual bearing methods usually give similar results for screwanchors with three-helix diameters spacing.

Tran

sitio

n Zo

ne

Helix Spacing (S/D)

B-19

• For Hand or Machine InstallationChance No-Wrench Screw Anchors may be installed by hand or machine. The THIMBLEYE® eye or TRIPLEYE®

eye on the rod has a large opening to admit a turning bar for screwing the anchor down. The eye will alsofit into an adapter available from most hole-boring machine manufacturers so the anchor may be power-installed. The No-Wrench Screw Anchor consists of a drop-forged steel THIMBLEYE® eye or TRIPLEYE® eyerod welded to a steel helix. The entire anchor is hot-dip galvanized for long resistance to rust.

No-Wrench Screw Anchors can be installed to a greater depth to reach a firmersoil by using a 6-ft. extension rod with forged coupling and a forged TRIPLEYE®

eye, catalog number 402. Maximum installing torque is 2300 ft.-lbs. for 1-1⁄4"diameter rod.

Catalog numbers 4345, 6346 and 816 may be ordered with a forged THIMBLEYE®

rod rather than the standard TRIPLEYE® rod. To order a THIMBLEYE® rod simplyadd "-1" to the suffix of the catalog number. Example: Catalog No. 6346-1.

NO-WRENCH SCREW ANCHOR

Kelly Bar

Kelly Bar Adapter

No Wrench PowerInstallation Tool

No-WrenchAnchor

“NO WRENCH”TYPICAL DRIVE STRING

Typical working torque:3⁄4" Rod 400 ft.-lbs.1" Rod 1000 ft.-lbs.11⁄4" Rod 2300 ft.-lbs.

*RUS Accepted.


Note: If hand installed, holding strength may be reduced by as much as 10% to 20%.Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lower strength.

No Wrench AnchorHolding Strengths - (lbs.)

vs Chance Soil ClassStd.Pkg./Pallet1/1001/1001/601/201/201/201/50

Rod Dia.&

Length3⁄4" x 54"3⁄4" x 66"1" x 66"

11⁄4" x 66"11⁄4" x 96"11⁄4" x 96"

AnchorSizeDia.

4"6"8"

10"10"14"

CatalogNo.

TRIPLEYE®

43456346*816

101461014812537

402 11⁄4" x 6' TRIPLEYE®

extension

Class7

15002500600070007000

12000

Class6

300050009000

100001000015000

Class5

45006500

11000130001300016000N.A.

NO-WRENCH POWER INSTALLATION TOOLEspecially designed for use with the Chanceportable anchor installer. This tool boltsdirectly to the installer’s output flange orappropriate Kelly bar adapter. Adjustablepivot plates accept rods from 3⁄4 to 11⁄4"diameter. Through-pin with retainer clippasses through the eyenut.

Has (four) holes on a 51⁄4" bolt circle forattachment. Includes (four) 1⁄2" x 11⁄2" bolts,nuts and lockwasher.

Note: Can be attached to any Chance TorqueIndicator

Catalog No.E303-0255

Weight, lbs.9

67/8"

B-20

Cat. No.C302-0003C302-0004

DescriptionExpanding & Tamping BarExpanding & Tamping Bar

Length10'12'

Weight22 lbs.24 lbs.

EXPANDING & TAMPING BARThe improved Chance fiberglass handle Expanding and Tamping Bar simplifies the jobof expanding anchors. The curved Tamper and Expander Head distributes the weight ofthe bar evenly around the anchor rod to reduce handle vibration. The hook of theExpanding and Tamping Bar wraps around the anchor rod to keep the Expanding Headfrom slipping off the anchor top plate. This tool is also effectively used for tamping in soilabove the installed anchor. The base casting is attached directly to the Epoxiglas handle.

To order fiberglass replacement handles or expander head, see page 4A-11.

MORE HOLDING CAPACITY FOR LESS

Four different sizes are available with holding capacity ashigh as 40,000 pounds.

Chance “Bust” Expanding Anchors expand to take full ad-vantage of the available area. All eight blades wedge intoundisturbed earth . . . there is no wasted space betweenblades.

This anchor should be installed in relatively dry and solidsoils. The effectiveness of the anchor is dependent upon thethoroughness of backfill tamping.

“Bust” Expanding Anchor

Std.Pkg./Pallet12/2886/1504/484/482/262/26

8-Way Anchor Holding Strengths - (lbs.)vs Chance Soil Class


CatalogNumber6870*

88135*10821082-3⁄412831283-1

AnchorHoleSize6"8"

10"10"12"12"

AreaSq.In.70135200200300300

Rod Size(Order

Separately)5⁄8"

5⁄8" or 3⁄4"1"3⁄4"

11⁄4"1"

+Ultimate strength of rod may control. (See page 4-19 for rod ratings and selection.)Add suffix "G" for galvanized. Example: 88135G.*RUS Accepted.Note: Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lower strength.

Class3

1600026500+3100031000+4000040000+

Class4

1400022000+26500

26500+3400034000

Class5

1100018000+21000210002650026500

Class6

85001500016500165002150021500

Class7

50001000012000120001600016000

U.S. Patent No. 5,775,848

B-21

The Cross-Plate anchor is made for installation in holesdrilled by power diggers. Because the size of the hole does notaffect holding capacity, the hole can be dug by the same augerthat is used to dig the pole holes on transmission projects.

Cross-Plate anchors are installed in a diagonal bored holewhich is undercut so the anchor is at right angles to the guy.A rod trench is either cut with a trenching tool or drilled witha small power auger. Both anchor and rod trench should berefilled and tamped.

Catalog No.X16X20

X20-1X24-3⁄4*

X24X24-1

Hole Size16"20"20"24"24"24"

Std. Pkg./Pallet6/1084//644/641/481/481/48

Approx. Wt. per Carton†

90 lb.64 lb.64 lb.34 lb.34 lb.34 lb.

Area, sq. in.150250250400400400

†X-24 Series are not available in carton and are shipped as individual pieces.

See page 4-19 for rod ratings and selection.

*RUS Accepted.

Note: Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lower strength.

Application and Ordering Information

Cross-Plate Anchor

Rod Size (order separately)5⁄8", 3⁄4"5⁄8", 3⁄4"

1"5⁄8", 3⁄4"

1"11⁄4"

B-22

+Protected Rods - Catalog No.Catalog No.

Size1/2 x 5'1/2 x 6'1/2 x 7'

5/8" x 5'5/8" x 6'5/8" x 7'5/8" x 8'3/4" x 6'3/4" x 7'3/4" x 8'3/4" x 9'

3/4" x 10'1" x 8'1" x 9'1" x 10'11/4 x 8'

11/4 x 10'

THIMBLEYE®

Adapter5305530653075315

†*5316†*5317†*5318*5326*5327

†*5328——

*5338—

†*5340——

*N.E.M.A. Standard†RUS Accepted.+Galvanized rod and square nuts meet NEMA specification Ph2 plus have polyethylene tube. No asphalt paint is added, so tube canslide down after anchor is expanded.

D5/8"3/4"1"

11/4"

*R7/32"1/4"

5/16"3/8"

B13/4"2"

25/8"215/16"

TWINEYE® ADAPTER

C7/8"1"

13/16"11/4"

E15/16

11/16"15/16

19/16"

F11/4"13/8"11/2"15/8"

D3/4"1"

11/4"

TRIPLEYE® ADAPTER

F11/4"11/2"15/8"

E11/2"15/8"

111/16"

*R1/4"1/4"1/4"

*R17/32"7/32"7/32"

B21/2"29/16"23/4"

C111/16"111/16"111/16"

Rod Size, in.1/25/83/4111/4

Strength, lb.10,00016,00023,00036,00058,000

TENSILE STRENGTH

*(2 x R or 2 x R1) = maximum-diameter guy strand.

TWINEYE®

Adapter————5346

†*5347†*5348*5356*5357

†*5358†*5359†5360*5368†5369

†*5370—

15129

TRIPLEYE®

Adapter————————

*755775587559—

7568—

7570C200-0028

7574

OvaleyeAdapter

—————

6417————————

6440——

THIMBLEYE®

Adapter———————

C200-0088C200-0089C200-0090

—C200-0091C200-0102

—C200-0103

——

TRIPLEYE®

Adapter————————

C200-0099C200-0098C200-0097

—C200-0105

—C200-0104

——

TWINEYE®

Adapter———————

C200-0092C200-0093C200-0094C200-0095C200-0096

—C200-0100C200-0101

——

D5/8"1"

A9/16"7/8"

B11/2"11/2"

OVALEYE ADAPTER

C2"2"

D1/2"5/8"3/4"1"

*R3/16"1/4"

9/32"13/32"

B11/4"11/2"15/8"21/16"

THIMBLEYE® ADAPTER

C9/16"

11/16"13/16"11/8"

E1/2"

9/16"11/16"15/16"

F11/4"13/8"11/2"15/8"

Rods, Anchor, GalvanizedAvailable for one, two, or three guys for use with expandingand cross-plate anchors. THIMBLEYE® adapter, TWINEYE®

adapter and TRIPLEYE® adapter rods distribute pulling stressesuniformly over individual strands of guy wire and keep theguy wire from spreading, kinking, or bending. The drop-

forged eye of each anchor rod is stronger than the rod itself.Rod length and diameter are stamped below each rod eye.Each rod is threaded 31/2" minimum length. Nuts included.

B-23

CLOSED

• Saves Time, Labor, MoneyThe Chance Expanding Rock Anchor is a big time, labor, and money saver. . . because, in most cases, there is no need to mix concrete, melt lead, orcarry extra, bulky equipment to the job. Generally, the cost of installing theExpanding Rock Anchor is about 35% less than the old-fashioned groutingmethod

• Expands and WedgesThis anchor expands and wedges against solid walls of rock. And, once it isexpanded, the harder the pull on the rod—the tighter it wedges. Wedges aremade of malleable or ductile iron with a rust-resistant coating. Rod shouldbe in line with the guy.

• No Concrete — No LeadIn most cases, grouting is not required. Installation is quick and simple.Bore the hole with hand or power drill, making sure that the diameter of thehole is 1⁄8th-inch larger than the diameter of the unexpanded anchor. Dropthe anchor in the hole. Put a bar through the large eye of the anchor rod.Turn the rod until the anchor is firmly expanded against the sides of thehole. Grouting should be done if protection of the rock against weatheringis a concern.

This wedging force holds the anchor securely in place—to stay. Note thereis no pouring of hot lead into wet rock. . .no weakening grout voids to worryabout.

• 1, 2 or 3 Guy StrandsThe large drop-forged TRIPLEYE® rod of high-test steel holds up to three guystrands. The contour of the eye grooves keeps the guy strands fromspreading, kinking, bending. . . and allows slack to be pulled up withoutbinding, damaging, or weakening the guy.

EXPANDING ROCK ANCHORSU.S. Patent No. 5,775,848

RodLth.15"30"53"60"72"84"96"

HoleSize2"2"2"2"2"2"2"

ApproxWeightPer 100

500700960

1040120013001460

No.in.

Bdl.5555555

Cat.No.

R315*R330*R353*R360R372R384R396

RodDia.

3⁄4"3⁄4"3⁄4"3⁄4"3⁄4"3⁄4"3⁄4"

AnchorSize13⁄4"13⁄4"13⁄4"13⁄4"13⁄4"13⁄4"13⁄4"

AnchorFullyExp'd23⁄8"23⁄8"23⁄8"23⁄8"23⁄8"23⁄8"23⁄8"

RodLth.30"53"72"96"

HoleSize21⁄2"21⁄2"21⁄2"21⁄2"

ApproxWieghtPer 100

1166183321332666

No.in.

Bdl.3333

Cat.No.

R130LR153LR172LR196L

RodDia.1"1"1"1"

AnchorSize21⁄4"21⁄4"21⁄4"21⁄4"

AnchorFullyExp'd31⁄8"31⁄8"31⁄8"31⁄8"

Drill hole by hand . . . . . . push anchor into hole. . . or with power tool . . . turn rod to expand.

*RUS Accepted.3⁄4" Rod Minimum Ultimate Strength of 23,000 pounds.1" Rod Minimum Ultimate Strength of 36,000 pounds.

Ultimate strength ratings apply to properly installed anchors only.Failure to install within 10° of alignment with the guy load may significantly lower strength.Recommended minimum installation depth is 12" in solid rock.

OPEN

B-24

• Quicker Installing, More Efficient Than Wood KeyMade of structural steel, the Chance Pole Key anchor is used where guys are impractical or asbackup to guys.

The Pole Key anchor can be installed in about 15 minutes, while it takes about 3 hours to installan old-type wood key.

The Pole Key anchor is extensively used for keying power and telephone-line poles, and woodpoles used in street lighting. It is also used as a pole reinforcement in soft soils where the loadis unbalanced, due to small angles or crossarm configuration.

Expanding Pole Key Anchor

Application and Ordering Information

Ultimate Resisting Force at 5 ft. Depth (lb.)

Approx.Weight241⁄2 lb.

AreaExpanded276 sq. in.

BladeWidth

7"

WidthExpanded

271⁄4"

CatalogNumber*P4817

SoilClass

49,500

SoilClass

311,000

SoilClass

57,400

SoilClass

65,800

Chance Pole Key anchor is quickly installed next to a polebutt to help hold it in place against light overturning loadsdue to service drops, prevailing winds or small changes in linedirection (See illustrations).

The lateral load and overturning moment which can be resisted depends on the height of the load above groundlevel, the depths of the two opposing Pole Keys, and the allowable lateral deflection of the pole at ground line.

*RUS Accepted. Accommodates any 3⁄4"-diameter rod on page 4-19.

U.S. Patent No. 5,775,848

CLOSED EXPANDED

B-25

Protected Rod for Corrosion-Resistant AnchorThese rods include fiber-reinforced washer and heavy-forged cap nut. Nut is attached to rod. Washer is shipped separately in a box.Galvanized Rod meets NEMA specification PH2 plus has asphalt coating, polyethylene tube and heat shrink collar.

Catalog No.C200-0047C200-0048C200-0049

—C200-0050

——

C200-0051—

C200-0052

Lb./100 Pcs.133014501566

—1826

——

2500—

3005

Thimbleye® Adapter

Catalog No.C200-0053C200-0054C200-0055C200-0056C200-0057

—C200-0114C200-0108C200-0058C200-0059

Lb./100 Pcs.13621470165017501910

———

28003050

Twineye® Adapter

Catalog No.C200-0106C200-0060C200-0061C200-0062

—C200-0107

—C200-0063

—C200-0064

Lb./100 Pcs.—

163017831883

———

2730—

3270

Tripleye® Adapter

3⁄4" x 6'3⁄4" x 7'3⁄4" x 8'3⁄4" x 9'

3⁄4" x 10'1" x 6'1" x 7'1"x 8'1"x 9'1"x 10'

Contact Hubbell Power Systems, Inc. for additional size rods.

Galvanized Asphalt Coated Anchor Rod

Curved Washer Surface

Flat Washer Surface

Disk Anchor

Round Plastic Tube

Short Piece of Heat Shrink at Top of Rod

Insulating WasherNut

Fits Protected Rod Size3⁄4"1"1"1"1"1"

Hole Size16"16"20"20"24"24"

Description16" Anchor .187" Thickness16" Anchor .250" Thickness20" Anchor .187" Thickness20" Anchor .250" Thickness24" Anchor .187" Thickness24" Anchor .250" Thickness

Catalog No.C102-2008C102-2009C102-2011C102-2012C102-2054C102-2050

Corrosion-Resistant Anchor

The Chance corrosion-resistant disc anchor is designed for low resistivity,alkaline and acidic soils with electrolite combinations. The anchor eye is forgeddirectly to the rod, so the eye is an integral part of the anchor. The anchor'sflanged cap nut is forged. It's large and heavy for greater protection. The heat-shrink sleeve over the galvanized anchor rod helps prevent moisture from goingdown the rod. The insulating washer is fiberglass-reinforced thermoset mate-rial for better load-bearing properties compared to thermoform materials.

C205-0407C205-0408

3⁄4"1"

242 lb.242 lb.

Fiber-Reinforced WasherCatalog

No.C210-0033C210-0034

FitsRod Size

3⁄4"1"

Approx.Wt./100 pcs.

23 lb.19 lb.

Cap Nut

Chance design offers many advantagesCorrosion-Resistant Anchor

RodSize

B-26

CatalogNumber

T112-0192T112-0224C112-0275T112-0217

T112-0584

Std.Pkg./Pallet1/121/121/12

1

1

Weightea.,lb.45536131

N.A.

Description8" Helix, 31/2" O.D. x 60" Shaft8" Helix, 31/2" O.D. x 75" Shaft8" Helix, 31/2" O.D. x 84" ShaftSurface Mounted, 31/2" O.D. x36" w/8" sq. x 1/4" base plateSurface Mounted, 6" O.D. x 48"w/12" sq. x 1" base plate

ORDERING INFORMATION8,000 ft.-lb. Typical Working Torque

Bumper Postsfor instant equipment protection Protect transformers, switchgear and guys. Any equipment

needing bumper protection is an ideal candidate. Cheaperthan concrete. Installation in minutes regardless of weatherconditions. Available power diggers can install through black-top surfaces. Hot-dip galvanized corrosion-resistant finish.

Installing ToolsAdditional tools may not berequired for Bumper Post ifKelly bar can be inserted intothe 3.06" inside dia. of thepost and pinned by a bent-arm pin.

Tools are available which boltdirectly to Chance Kelly baradapters or which can be usedwith Chance locking dog as-sembly.

Order C303-0737 for Kelly barattachment or C303-0739 foruse with locking dog assem-bly. Bumper Post is insertedinto drive tool and held by theprovided bent-arm pin.

Mounts on 3/4" dia. Anchorbolts that protrude fromconcrete or can be installedon T112-0143 screw-typefoundation. Includes drive-on metal cap.

C303-0737

C303-0739

Hole forattachingdrive tool

Drive-onmetal cap

Power-InstalledDesign

Surface-MountedDesign

B-27

ANCHOR TOOLINGINDEX

B-28 How to Match Chance PISA® Anchors and Installing WrenchesB-29 PISA® Tooling (10,000 ft-lb System)B-30 Building a Drive String (PISA® , RR and SS Anchors)B-31 TOUGH ONE® Tooling (15,000 ft-lb System)B-32 Bent Arm Pin and Coil Lock InformationB-33 Adapters (Reducers, SS and No Wrench)B-34 Chance Torque Indicators (Mechanical & Shear Pin)B-35 Soil Test Probe AssembliesB-36 Expanding Bar and Pulling EyeB-37 Portable Anchor Installers for Small FoundationsB-38 Portable Anchor Installers and Hydraulic Power UnitB-39 Anchor/Foundation Drive Heads and MountingB-40 Components for Skid-Steer and Backhoes

B-28

8,00010,000

8,00015,000

7,0006,000

4,0006,000

*C102-1583

*C102-1595

*C303-1064

*C303-1063

**C303-0983

**C303-0982

7'

31⁄2 '

7'

31⁄2 '

7'

31⁄2 '

10,000

10,000

10,000

10,000

15,000

15,000

2.16

2.16

2.44

2.44

2.44

2.44

1.46

1.46

1.54

1.54

1.54

1.54

An

cho

r To

rqu

e Ratin

g (ft-lb

)

Orange

Yellow

Red

*Fits S

tandard Locking Dog A

ssembly C

C303-0069H

D** F

its TO

UG

H O

NE

Locking Dog A

ssembly C

C303-0981

Ou

tside

Inside Dim. (inches)

Outside Dim. (inches)

Maximum

Installing

Torque Rating (ft-lbs)

Length (ft.)

Installing Wrench

Catalog Number

C102-50XX Series

TOUGH O

NE ® Anchor - Large Hub

C102-50XX Series

TOUGH O

NE ® Anchor - Large Hub

C102-52XX Series

TOUGH O

NE ® Anchor - Small Hub

C102-52XX Series

TOUGH O

NE ® Anchor - Small Hub

Mid-Strength PISA ® Anchor

Standard-Strength PISA ® Anchor

PISA ® 7 Anchor

PISA ® 6 Anchor

(formerly PISA ® 5 Anchor)

Inside and outside dimensions correspond to

the color coded end of installing wrench.

Inside

Red

Red

Red

Red

Red

Red

Red

Red

Yellow

Yellow

Yellow

Yellow

Yellow

Yellow

Orange

Orange

Orange

Orange

Orange

Orange

Orange

Orange

B-29

STANDARD Drive-End Wrench installs8,000 ft.-lb. (small hub) TOUGH ONE® anchors,10,000 ft.-lb. (small hub) TOUGH ONE® anchors,4,000 ft.-lb. Standard-Strength PISA anchors,6,000 ft.-lb. Mid-Strength PISA anchors

HYBRID Drive-End Wrench installs8,000 ft.-lb. (large hub) TOUGH ONE® anchors,6,000 ft.-lb. PISA 6 anchors,7,000 ft.-lb. PISA 7anchors

31⁄2-ft. Drive-End Wrench

STANDARDLocking

Dog AssemblyC303-0069HD

†NOTE: These wrenches will fit 15,000 ft.-lb. TOUGH ONE® anchors dimen-sionally, but . . . MUST NOT be used for TORQUES IN EXCESS of 10,000 ft.-lb.!*NOTE: The old-style HYBRID wrenches C303-1063 and C303-1064, havinga collar welded around the drive end, fit only PISA 6 and PISA 7 anchors.

C102-1595

*†C303-1063

31⁄2-ft. Extension 7-ft. Extension

Extension Wrenchfor above STANDARD and HYBRID Drive-End WrenchesC630027C630028

Part No.630013630011HD630012HD630014630015

Kelly BarShapeHexHexHex

SquareSquare

Kelly Bar Dimension

Each STANDARD Kelly bar adapter has six holes for 1⁄2" bolts on a51⁄4" bolt circle and comes with six 1⁄2" Grade 5 bolts, nuts, lockwashers and bent arm pin with coil lock.

Y5"

41⁄4"41⁄4"

21⁄4"21⁄2"

X2"21⁄2"25⁄8"21⁄4"21⁄2"

Z61⁄8"81⁄8"81⁄8"7"7"

STANDARD Locking Dog Assembly

DescriptionComplete STANDARDLocking Dog Assembly

Locking Dog Replacement Kit includesparts needed to replace both locking dogs

Replacement Ring OnlySTANDARD Locking Dog Assembly has six holes for 1⁄2" bolts on a51⁄4" bolt circle, comes with six 1⁄2" Grade 5 bolts, nuts and lock washers.

STANDARD Drive-End Wrench installs8,000 ft.-lb. (small hub) TOUGH ONE® anchors,10,000 ft.-lb. (small hub) TOUGH ONE® anchors,4,000 ft.-lb. Standard-Strength PISA anchors,6,000 ft.-lb. Mid-Strength PISA anchors

HYBRID Drive-End Wrench installs8,000 ft.-lb. (large hub) TOUGH ONE® anchors,6,000 ft.-lb. PISA 6 anchors,7,000 ft.-lb. PISA 7anchors

7-ft. Drive-End Wrench

C102-1583

*†C303-1064

STANDARD Kelly Bar Adapter with Bent Arm Pin(51⁄4" Bolt Circle)

A complete tool system consists of: Kelly bar adapter,torque indicator, locking dog assembly and drive-end assembly. For instructions for selecting the properKelly bar adapter, see page 4A-5.

• Convertible to Extension UseExtension assemblies can be added where soil conditions

STANDARD and HYBRIDPISA® Anchor Installing Tools

(For installing torques up to 10,000 ft.-lb.)

ExtensionWrenchC630027C630028

Drive-EndWrench

C102-1583

Drive-EndWrench

C303-1064

STANDARDKelly BarAdapter

See Chart▲

Y

Cat. No.C303-0069HD

C303-0070

P130-0007P

X

Z

Wt. ea.,lb.101818

131⁄4131⁄4

Wt.ea.20 lb.

4 lb.

0.10 lb.

7"

57 lb.

64 lb.

29 lb.

28 lb.

42 lb. 70 lb.

dictate that anchors be set more than one rod length deep orwhere digger to ground clearances are limited.• Transmits Torque to Anchor CoreThe wrench transmits the torque from the Kelly bar of thedigger to the hub of the Power-Installed Screw Anchor so thatthe anchor rod need be only large enough in diameter tosupport the guy load.

Orange

Yellow

P001-0259P Hex Bolt055371P Lockwasher055635P Hex Nut

B-30

SCREW ANCHORDRIVE TOOL STRINGS

(For installing torques up to 10,000 ft.-lb.)Selecting the correct Kelly Bar Adapter is key to building a successful Drive String.Follow these two easy steps:1) Remove the auger from the digger and carefully measure the X and Y dimensions of the Kelly bar.

2) Match the shape of the Kelly bar and the X and Y dimensions with the Kelly bar adapter chart provided on page 4A-4 or4A-6. The Y dimension on the Kelly bar adapter must be equal to or greater than the “Y” dimension on the Kelly bar itself.

PISA®

DriveWrench

PISA® Anchor

Drive StringsforPISA® An-chor,SS AnchororRR AnchorInstallations:Locking Dog Assembly(can bolt directly to KellyBar Adapter)

Anchor

Drive Tool(can bolt directly toKelly Bar Adapter)

X

Y

X

Y

Kelly BarAdapter

Kelly Bar

TorqueIndicator(optional)

Rod Anchor

SS5,SS150,RRDriveWrench

Drive StringforSS AnchororRR AnchorInstallations:

A Note about Bolt CirclesChance anchor installing tools are provided with appropriate bolt circles for the expected service. The torque limitations forthe three standard bolt circles are give below. Never exceed the rated torque of any Chance installing tool.

Bolt Circle(6) 1⁄2" Grade 5 bolts on 51⁄4" Bolt Circle(6) 5⁄8" Grade 2 bolts on 75⁄8" Bolt Circle(12) 5⁄8" Grade 2 bolts on 75⁄8" Bolt Circle

Use for Torque up to10,000 ft.-lb.15,000 ft.-lb.20,000 ft.-lb.

B-31

TOUGH ONE Kelly Bar Adapter with Bent Arm Pin (75⁄8" Bolt Circle)

Kelly BarShapeHexHexHex

SquareSquare

Part No.

C303-0936C303-0937C303-0940C303-0955C303-0958

Bent ArmPin IncludedC303-1223C303-1223C303-1222C303-1227C303-1227

5/8" Gr. 2Bolts Included

1212121212

X 21/2"25/8"3"

21/2"3"

Y37/8"37/8"41/2"43/4"

31/2"&415/16"

Catalog No.C303-1340

DescriptionTorque Indicator adaptable to 51⁄4" B.C. or 75⁄8" B.C.

Wt., lb.65

*Mechanical Torque Indicator

Each TOUGH ONE® Kelly bar adapters has twelve holes for 5/8" bolts on a 75/8"bolt circle, comes with twelve 5/8" Grade 2 bolts, nuts & lockwashers and bent armpin with coil lock.

*See page 4A-9 for additional information on Chance Torque Indicators.

See page 4A-8 for SS and RR Anchor Tool options when using the TOUGH ONE® Drive String System.

TOUGH ONE Locking Dog Assembly


C303-1026

DescriptionComplete TOUGH ONE Locking Dog Assembly

Locking Dog Replacement KitIncludes all parts less casting

TOUGH ONE locking dog assembly has twelve holes for 5/8" bolts on a 75/8" boltcircle and comes with twelve 5/8" Grade 2 bolts, nuts and lockwashers.

DescriptionInstalls 15,000 ft.-lb. (large hub) TOUGH ONE®

Anchors, 8,000 ft.-lb. (large hub) TOUGH ONE®

and all 11/2" Core Anchors

Catalog No.C303-0982C303-0983

Length31/2 ft.7 ft.

TOUGH ONE Drive-End Wrenches

TOUGH ONE® drive ends are painted with a red band on the bottom.

DescriptionExtension attaches to drive-end wrench

when additional depth is required.

Catalog No.C303-0987C303-0988

Length31/2 ft.7 ft.

Extension Assemblies for TOUGH ONE Drive-End Wrench

Kelly Bar Dimensions

KELLY BAR

*TORQUEINDICATOR

X

Y

X

Y

KELLY BARADAPTER Z

TOUGH ONE® Anchor Installing Tools(For installing torques up to 15,000 ft.-lb.)

LOCKINGDOG

ASSEMBLY

DRIVEWRENCH

ANCHOR

73/4"Wt., lb.

28

5

Wt., lb.3673

Wt., lb.5389

Z 81/4"81/4"8"7"7"

Weight,lb.2323272223

A complete tool system consists of: Kelly bar adapter,torque indicator, locking dog assembly and drive-end assembly. For instructions for selecting the properKelly bar adapter, see page 4A-5.

Red

Hex Bolt 056653PLockwasher 055827PHex Nut 055803P

Hex Bolt 0566531Lockwasher 055827PHex Nut 450314

B-32

Size3" x 5⁄8"

31⁄2" x 3⁄4"41⁄2" x 1"5" x 3⁄4"

41⁄2" x 1⁄2"5" x 5⁄8"

Bent Arm Pinand Coil Lock AssemblyC303-1226C303-1225C303-1224C303-1227C303-1223C303-1222

ANCHOR INSTALLING TOOLBENT ARM PIN WITH COIL LOCK

Each Chance plated-steel Bent Arm pin is designed to attacha Kelly bar adapter to a Kelly bar. Also used to secure SS, RRand bumper post anchors to anchor drive tools.

Use with STANDARD and TOUGH ONE® Kelly bar adapters,SS, RR and bumper postinstalling tools


Bent Arm Pins with Coil Locks are included with new toolsas required. Order Pins and Coil Locks for existing tools asshown below.

Bent Arm Pinand Coil Lock

AssemblyC303-1227C303-1223C303-1223C303-1223C303-1223C303-1223C303-1223C303-1222C303-1222C303-1227C303-1227C303-1223C303-1223C303-1222C303-1227C303-1227

Kelly BarAdapter

*630010*630011630011HD

*630012630012HD630013

630013A 630014 630015630016630017C303-0936C303-0937C303-0940C303-0955C303-0958


AssemblyC303-1226C303-1225C303-1224C303-1224C303-1226

SS/RRTools

639001C303-0195C303-0201C303-0202C303-0020


AssemblyC303-1227C303-1227

Bumper PostTools

C303-0737C303-0739

BENT ARM PIN

COIL LOCK

To order Coil Lock only, order Part No. P303-1215.

*Old-style Kelly Bar Adapters,� no longer available.

Always use the approved combination of Coil Locksand Bent Arm Pins. Never attempt to use any othercombinations, such as hair pins, cotter keys, etc., withBent Arm Pins.

! WARNING

Chance Bent Arm Pins with Coil Locks arethe only tested and approved means forthrough-pin attachment of drive tools. Do notattempt to use any other means of attach-ment.

! WARNING

B-33

Cat. No.

C303-0115

T303-0166

Description

Bolt circle adapter with two1/2" x 51/4" bolt circles

Bolt circle adapter with one1/2" x 51/4" bolt circle andone 5/8" x 75/8" bolt circle

Wt., lb.

11

18

ADAPTERS

BOLT CIRCLE ADAPTERS(For torques up to 10,000 ft.-lb.)These adapters are used to connect two tools having incompatable bolt circles.The C303-0115 is for use between two tools having tapped 51/4" bolt circles.

The T303-0166 is for use between a tool having a 51/4" bolt circle and one havinga 75/8" bolt circle.

Both are limited to 10,000 ft.-lb.

FOR INSTALLING NO-WRENCH ANCHOR& MANUAL FOUNDATION TOOLEspecially designed for use with the Chance portable anchor installer. Thistool bolts directly to the installer’s output flange or Kelly bar adapter havingsix 1⁄2" dia. holes on a 51⁄4" bolt circle. Adjustable pivoting plates accept rods from3⁄4" to 11⁄4" diameter.

For manually-installed foundations, eyenut must be temporarily installed forinstallation. Has four holes on 51⁄4" bolt circle for attachment. Includes four 1⁄2"x 11⁄2" bolts, nuts and lockwashers.

Cat. No.

639001C303-0195*C303-0201*C303-0202*

Description

SS5/SS150/RRDrive Tool

SS175 Drive ToolSS200 Drive ToolSS225 Drive Tool

Bolt Circle

(6) 1⁄2" holes on 5 1⁄4" B.C.(12) 5⁄8" holes on 7 5⁄8" B.C.(12) 5⁄8" holes on 7 5⁄8" B.C.(12) 5⁄8" holes on 7 5/8" B.C.

Approx.Wt., lb.

7183030

*Requires use of T303-0166 adapter, and limited to 10,000 ft.-lb., when usedwith STANDARD Kelly bar adapter (with a 5 1/4" bolt circle).

Description

SS5/SS150/RRDrive Tool

SS175 Drive ToolSS200 Drive Tool

Cat. No.

C303-0020C303-1035T303-1403C303-1077

Approx.Wt., lb.

8112623

Unit fits:

STANDARD Locking Dog AssemblyTOUGH ONE® Locking Dog Assembly

TOUGH ONE®

Locking Dog Assembly

These tools slide into locking dog adapter and are retained by spring loadeddogs.

FOR INSTALLING SS OR RR ANCHORSThese Drive tools require the appropriate Kelly bar adapter, sold separately.Each comes with bolts, nuts and lockwashers.

C303-0115

C303-0020

639001

Weight, lb.

9

Cat. No.

E303-0255E303-0255

T303-0166

B-34

LockingDogAssembly

Kelly BarAdapter

TorqueIndicator

Tooling with75/8" or 51/4"Bolt Circlemay be used.Check Ratings

Using the Chance Torque Indicator, you can install screwanchors to a pre-determined torque value which gives apositive indication of anchor holding capacity in any typesoil. These tools also help your crew avoid excessive torsionalloading which could cause damage to the anchor and/or otheranchor tools during installation.

The Indicators are mounted between the Kelly bar adapterand drive wrench or locking dog assembly.

MECHANICAL TORQUE INDICATORC303-1340

(For Installing torques up to 20,000 ft.-lb.)

Offers: Easy-to-read dial gives the operator a direct readoutof installation torque at all times.

No Shear pins to replace.

Top and bottom each has six holes tapped 1⁄2" - 13 on a 51⁄4" boltcircle and twelve holes tapped 5⁄8" - 11 on a 75⁄8" bolt circle.

NOTE: Mechanical Torque Indicator is not recommendedin heavy, rocky soil applications.

CHANCE TORQUE INDICATORS

Catalog NumberC303-0044

*C303-0045*T303-1420

DescriptionShear Pin Torque IndicatorOne Carton of Shear Pins (Approx. 1700 pins)One Box of Shear Pins (Approx. 510 pins)

Wt., lb.545015

SHEAR PIN TORQUE LIMITERC303-0044(For Installing torques up to 10,000 ft.-lb.)

Offers: Protection for anchors and installing tools by disconnectingthe power when the installing torque reaches a preselectedlevel.

Useable in very rocky soil.

Durable — does not require special storage or handling.

Top and bottom each has six holes tapped 1⁄2" - 13 on a 51⁄4" bolt circle.

*Each Shear Pin provides 500 ft.-lb. of torque.

Coil LockBent ArmPin

B-35

• Determine soil conditions without taking core samples

The Chance Soil Test Probe is a mechanical instrument which enablesthe operator to determine the condition of the sub-soil without coresamples. A ratchet-handle torque wrench which slides up and down onthe shaft is used to install or retract the probe. Torque wrench readings,in inch-pounds, provide a way to measure the consistency of the sub-soil.The torque values obtained are translated into soil classifications usingthe copyrighted Chance Soil Classification Table (see below) located onthe inside flap of the carrying case.

Torque readings are taken at the depth to which an anchor is to beinstalled, and at least 2 feet above this depth because the average earthconsistency 2 to 3 feet above the anchor determines the anchor holdingcapacity. The probe shaft is marked at 1-foot intervals permitting soilevaluation at every foot of depth.

The length of the Soil Test Probe (including helix) is 5 feet. Each shaftcoupled to the probe provides an additional 5 feet. A durable carryingcase protects the equipment when not in use.


DescriptionProbe w/3 5-ft. extensions

Length20'

Weight211/2 lb.

Soil Test Probe 1800 in.-lb. Capacity


Description5-ft. extension only

Weight3 lb.

Accessories

Cat. No.C309-0032

SOIL TEST PROBE

Common Soil-Type DescriptionSound hard rock, unweatheredVery dense and/or cemented sands;coarse gravel and cobblesDense fine sands; very hard siltsand clays (may be preloaded)Dense sands and gravel;hard silts and claysMedium dense sand and gravel; verystiff to hard silts and claysMedium dense coarse sands and sandygravels; stiff to very stiff silts and claysLoose to medium dense fine to coarsesands to stiff clays and siltsLoose fine sands; Alluvium; loess;medium - stiff and varied clays; fillPeat, organic silts; inundated silts, fly ashvery loose sands, very soft to soft clays

Class01

2

3

4

5

6

**7

**8

Geological Soil ClassificationGranite, Basalt, Massive LimestoneCaliche, (Nitrate-bearing gravel/rock),

Basal till; boulder clay; caliche;weathered laminated rockGlacial till; weathered shales, schist,gneiss and siltstoneGlacial till; hardpan; marls

Saprolites, residual soils

Dense hydraulic fill;compacted fill; residual soilsFlood plain soils; lake clays;adobe; gumbo, fillMiscellaneous fill, swamp marsh

ProbeValuesin.-lbs.(NM)N.A.

750 - 1600(85 - 181)600-750(68 - 85)500 - 60056 - 68

400 - 500(45 - 56)300 - 400(34 - 45)200 - 300(23 - 34)100 - 200(11 - 23)

less than 100(0 - 11)

TypicalBlow Count

"N" perASTM-D1586

N.A.60-100+

45-60

35-50

24-40

14-25

7-14

4-8

0-5

Class 1 soils are difficult to probe consistently and the ASTM blow count may be of questionable value.**It is advisable to install anchors deep enough, by the use of extensions, to penetrate a Class 5 or 6, underlying the Class 7 or 8 Soils.

SOIL CLASSIFICATION DATA

B-36

E-95B Adapter Bushing(included)

Pulling Eye5/8 x 25/8 Lg.Cadmium Plated Bolt with Nut

Cat. No.C302-0003C302-0004

*E302-0001*E302-0006P302-0002

Weight22 lb.24 lb.

7 lb.8 lb.

14 lb.

DescriptionExpanding & Tamping BarExpanding & Tamping Bar

Fiberglass HandleFiberglass HandleExpander and Tamper Head

Length10'12'

10'12'N/A

The improved Chance fiberglass handle Expanding and Tamping Barsimplifies the job of expanding anchors. The curved Expander andTamper Head distributes the weight of the bar evenly around the anchorrod to reduce handle vibration. The hook of the Expanding and TampingBar wraps around the anchor rod to keep the expanding head fromslipping off the anchor top plate. This tool is also effectively used fortamping in soil above the installed anchor. The base casting is attacheddirectly to the fiberglass handle.

EXPANDING & TAMPING BAR

Catalog No.E-96

Weight5 lb.

This inexpensive cost-cutter provides a large offset eye to accommodatethree-ton chain hoist hooks, and leaves the anchor eye free with plenty ofclearances for attaching formed wire grips. By removing the AdapterBushing, the E-96 Pulling Eye fits 11/4" rods. The E-96 Pulling Eye isinexpensive and easy to use. One person can assemble and hook up inminutes. For working loads to approximately 6,000 pounds (ultimatestrength — 18,000 pounds).

STANDARD PULLING EYE

1 3/4 5/81/2

Fiberglass Handle

Expander andTamper Head*Includes plug mix to reset handle.

B-37

Portable Anchor Installersfor small foundations

For most shaft-driven guy anchors and smaller screwfoundations, these compact drivers get into areaswhere large equipment cannot go or is impractical.Operator does not need to resist the torque generatedby anchor installation. Countertorque transmitsthrough a torque bar from the drive head to the earthor other restraint. This frees the operator for the taskof guiding the anchor path.

2,500 ft.-lb. torque capacity hydraulic power drive

Economical manual operation and portabilityfor remote sites, common anchor installations

Catalog No. C303-1032Medium-Duty Installer requires 1550 psi at 8 gpm flow rate to deliver 2,500 ft.-lb. maximum torque.

Built-in bypass valve limits output to 2,500-ft.-lb.maximum, two-way foot pedal gives operator directcontrol over drive and reverse directions, hoses (two12-ft. and two 25-ft.) come with quick couplers for allconnections from power supply to foot control to drivehead. Pivoting drive-head yoke connects with bent-arm pin to square-tubular torque bar which telescopesfrom 8 feet to 10 feet as needed.

Catalog No. C303-1244Heavy-Duty Installer requires 1,900 psi at 8 gpm flow rate to deliver 2,500 ft.-lb. maximum torque.

B-38

†Medium Duty — Catalog No. C303-1032

Output shaft is 11⁄2" square socket. Requires C303-1230and flanged drive tool (order separately) to install anchorsother than 11⁄2" square 11⁄4" round shaft.

* Note: Hydraulic components are not interchangeablebetween C303-1032 and C303-1244.

Grease filled gear case. Single Catalog Number aboveincludes all items below. Each item also may beordered by separate number.

Heavy Duty — Catalog No. C303-1244

Output Shaft is 2" Hex. - Requires Kelly Bar AdapterP630013 and flanged drive tool (order separately) to installall anchors.

* Note: Hydraulic components are not interchangeable be-tween C303-1032 and C303-1244.

* Hydraulic Control Valve C303-1031

Two 25-ft. Hydraulic Hoses C417-6121 (each)

* Hydraulic Drive Head C303-1180

Yoke Assembly E303-0680

* Two 12-ft. Hydraulic Hoses E303-0876 (pair)

Square Torque Bar Assembly E303-1041

Sealed oil-filled gear case. Single Catalog Numberabove includes all items below. Each item also maybe ordered by separate number.

Optional Hydraulic Power UnitCatalog No. C303-1201For easy wheeling to worksite, hydraulic drive head and footcontrol secure by rubber strap included to angle braces atopthe cart frame and hoses ride on handles.

Operating instructions are included with anchor installerand hydraulic power unit.

Cart-mounted on 5⁄8 "-diameter axle with two 4.80 x 8inflatable (30psi) tires; 271⁄4" wide x 341⁄2" high x 36" long;shipping weight with oil: 275 lb.Hydraulic Pump with fan cooling system:

Typical output pressure 2500psiPump displacement 8 gpm @ 3400rpmReservoir capacity 5 gallons US(shipping cap and vented fill cap provided)

Gasoline Engine System:16hp Briggs & StrattonIndustrial/Commercial Model 326437, Type 252712-Volt pushbutton start, 3600rpm (maximum)

2,500 ft-lbPortable Anchor Installers

†Adapter ToolCatalog No.C303-1230

†Note that all 51⁄4" bolt-circle tools may be connected directly to Heavy Duty Por-table Anchor Installer Cat. No. C303-1244. †Adapter Tool Cat. No. C303-1230 isrequired to connect 51⁄4" bolt-circle tools to Medium Duty Portable Anchor InstallerCat. No. C303-1032. If needed, order Adapter C303-1230 as a separate item.

Anchor Drive ToolsSee page 8 for details on tools to drive specific anchor types.

* Hydraulic Control Valve C303-1247

Two 25-ft. Hydraulic Hoses C417-6121 (each)

* Hydraulic Drive Head C303-1233

Yoke Assembly E303-0680

* Two 12-ft. Hydraulic Hoses E303-1253 (pair)

Square Torque Bar Assembly E303-1041

B-39

For Skid-Steers other than Bobcat:(for field welding to utility plates on skid-steers)

C303-1015C303-1016

3,500 ft.-lb. Bail & Jib Assembly less Utility Plate6,000 ft.-lb. Bail & Jib Assembly less Utility Plate

Anchor/Foundation Drive Heads• Vehicle Mounted • Hydraulic Powered• 3,500, 6,000 & 11,500 ft.-lb. Torque Ratings

Specially suited for vertical installations of screw-typeanchors, foundations, and bumper posts.

The drive head comes in two torque-rating ranges. Thedesign also delivers other features for rugged field condi-tions.

• Precision planetary gears and bearings in oil-filled,sealed gearcase

• Heavy-duty output housing and bearings

• Heavy-duty bail flange mounted to gearcase housingprovides balanced load-sharing torque restraint

• Dual-pin mounting provides drive-head positioning forcontrolled installations

• Drive-head also readily accepts earth augers for holedigging

Hose assemblies are not furnished with drive heads. Forhydraulic flow more than 20 gpm, 3⁄4"-diameter hose isrecommended. For flow rates of 20 gpm and below, 1⁄2" hosemay be used. Swivel joint and swivel joint adapter arefurnished. Thread size is 1"-111⁄2" NPSM (National PipeStraight Mechanical).

To order, refer to information below and on next page. Specify one each: Drive Head,Utility Plate, Bail & Jib Assembly, and Kelly Bar Adapter.

Skid-Steer Utility Plate, Bail and Jib Components

3,500 and 6,000 ft.-lb. maximum torque

Catalog Numbers atleft do not includedrive head, hoses orkelly bar adapter asshown at right.

For Bobcat Skid-Steers ONLY:Catalog No.

C303-0999C303-1014

Description

3,500 ft.-lb. Utility Plate, Bail & Jib Assembly6,000 ft.-lb. Utility Plate, Bail & Jib Assembly

Bracket

Description

6K & 11.5K ft.-lb. Eskridge3.5K ft.-lb. Eskridge6K & 11.5K ft.-lb. Eskridge3.5K ft.-lb. Eskridge6K & 11.5K ft.-lb. Eskridge3.5K ft.-lb. Eskridge

Backhoe

Brand Name

CaseCaseJCBJCB

John DeereJohn Deere

*A

10.110.17.007.008.188.18

B

1.51.01.51.01.51.0

Dimensions, inches Catalog

Number

C303-0969C303-0970C303-0971C303-0972C303-0973C303-0974

*Bracket accepts boom up to 10.2" wide (1.75" dia. pin).For booms 7" & 8.18" wide, 2 spacer bushings supplied.Other bushings available for backhoes not listed.

†Backhoe Mounting Brackets

To order, specify components in Typical Tool-String Assemblies on next page.Backhoe Mounting Components

3,500, 6,000 and 11,500 ft.-lb. maximum torque

B-40

Typical BackhoeTool-Strings

Z

X

Catalog Running Torque Running Torque Flow Speed Wt. Wt. Dimensions (in., cm)Number ft.-lb. Nm gpm rpm lb. kg A B C D E FC303-0926 3,500 @ 2,000 psi 4,700 @ 140 BARS 20 28 151 69 1.0 2.54 26 66.0 8.5 21.6 11 27.9 8.75 22.2 2 5.1

C303-0927 6,000 @ 2,400 psi 8,100 @ 165 BARS 40 39 246 112 1.5 3.81 29.5 74.9 10.7 27.2 13 33.0 11.4 28.9 2.5 6.4

C303-0928 11,500 @ 2,400 psi 15,600 @ 165 BARS 40 20 246 112 1.5 3.81 29.5 74.9 10.7 27.2 13 33.0 11.4 28.9 2.5 6.4

For SS5 and SS150 (11⁄2" Square Shaft) Series Anchors For SS175 (13⁄4" Square Shaft) Series Anchors†BackhoeMounting Bracket

3,500, 6,000 or11,500 ft.-lb.Drive Head

Kelly Bar Adapter‡

Shear-Pin TorqueIndicator C303-0044

Anchor Drive ToolC639001

HeadroomDimension

497⁄8"525⁄8"525⁄8"

Drive Head,ft.-lb.3,5006,000

11,500

†BackhoeMounting Bracket

3,500, 6,000 or11,500 ft.-lb.Drive Head

Kelly Bar Adapter‡

Shear-Pin TorqueIndicator C303-0044

Wrench AdapterT303-0166

Anchor Drive ToolC303-0195

HeadroomDimension

54"563⁄4"563⁄4"

Drive Head,ft.-lb.3,5006,000

11,500

Output Torque vs. Pressure

Part No.630013630011HD

X2" Hex

21⁄2" Hex

Y5"

41⁄4"

Z61⁄8"81⁄8"

‡Kelly Bar Adapters

Output Speed vs. Flow

Anchor/Foundation Drive HeadsEach of these KellyBar Adapters has a51⁄4" bolt circle andcomes with (6) 1⁄2"bolts, nuts andlockwashers anda Bent-Arm Pinwith Coil Lock (see page 4A-7).

B-41

APPLICATION ANDINSTALLATION GUIDE

This section of the Anchor Encyclopedia is to provide basic data on how and when a certain anchor is to be used. Alwaysrefer to the actual supplied instructions for preferred installation techniques.

INDEXB-42 TOUGH ONE® AnchorsB-43 Standard PISA® AnchorsB-44 How to Use PISA® AnchorsB-45 Square Shaft and Round Rod AnchorsB-46 No Wrench AnchorsB-47 Corrosion Resistant Disk AnchorsB-48 8-Way Expanding (Bust) AnchorsB-49 Cross Plate AnchorsB-50 Pole Key AnchorB-51 Expanding Rock AnchorsB-52 Bumper Post AnchorsB-53 How to Solve Anchor ProblemsB-58 Tool Maintenance - InspectionsB-61 Anchor Tooling - Proper MaintenanceB-65 Anchor Installing Tool Safety - “Proper Tooling”B-68 Tool Maintenance - “Detecting and Preventing Damaged Tooling”

The following installation procedures have been written to familiarize theuser with basic knowledge on how the chosen anchor is to be used.

For complete installation instructions and safety information, always referto the instruction sheets provided with the drive tooling.

Remember, before starting any anchor job, inspect the tooling for wearor loose and missing parts. If replacement is necessary, only useCHANCE® recommended parts.Just as equally important, inspect and survey the worksite for safetyhazards.

B-42

APPLICATION/INSTALLATIONTOUGH ONE® ANCHORS

ANCHORAPPLICATIONS

INSTALL INTHESECLASS SOILS

INSTALLINGEQUIPMENTREQUIRED

LIMITATIONSON USE

For distribution and transmissionguy loads, 31⁄2 and 7 foot anchorrods are used.

Classes 1, 2, 3, 4 and 5 (300-1600 inch-pounds with the soiltest probe)

Power digger and wrench as-sembly (see page B-28)

Do not use beyond two exten-sions (14 feet). Maximum instal-lation torque is 15,000 foot-pound.


Classes 2, 3, 4 and 5 (300-750inch-pounds with the soil testprobe)

Power digger and wrench as-sembly (see pages B-26 or B-28)


8,000 FT-LB.LARGE HUB ASSEMBLIES

15,000 FT-LB.LARGE HUB ASSEMBLIES

ANCHORAPPLICATIONS



LIMITATIONSON USE









8,000 FT-LB.SMALL HUB ASSEMBLIES

10,000 FT-LB.SMALL HUB ASSEMBLIES

B-43

APPLICATION/INSTALLATIONPISA® ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

For distribution guy loads, 31⁄2and 7 foot anchor rods are used.

Classes 5 and 6 (200-400 inch-pounds with the soil test probe)


Do not use in hard soils beyondtwo extensions (14-feet). Maxi-mum installation torque is 4,000foot-pound.

For distribution and sub-trans-mission guy loads, 31⁄2 and 7 footanchor rods are used.

Classes 4, 5 and 6 (200-500 inch-pounds with the soil test probe)


Do not use in very hard soils orbeyond two extensions (14-feet).Maximum installation torque is6,000 foot-pound.

ANCHORAPPLICATIONS



LIMITATIONSON USE

For distribution and sub-trans-mission guy loads, 31⁄2 and 7 footanchor rods are used.

Classes 4, 5 and 6 (200-500inch-pounds with the soil testprobe)


Do not use in very hard soils orbeyond two extensions (14-feet).Maximum installation torque is6,000 foot-pound.




Do not use in hard, rocky soils orbeyond two extensions (14-feet).Maximum installation torque is7,000 foot-pound.

MID-STRENGTH ANCHORSSTANDARD STRENGTH ANCHORS

PISA®-7 ANCHORSPISA®-6 ANCHORS

(FORMERLY PISA®-5 ANCHORS)

B-44

GENERAL INSTALLATION CONSIDERATIONS

Four words summarize proper anchor installation technique: "proper align-ment" and "down pressure." The PISA® anchor wrench transmits torquefrom the digger's Kelly bar to the anchor hub. (The anchor rod only has tobe of sufficient diameter to support the guy load.) Always maintain adequatedown pressure and keep the Kelly bar and the wrench aligned with theanchor. The right amount of down pressure keeps the anchor continuouslyadvancing. Too much down pressure may bend or even break an anchorhelix at torque loads far below the rating. Too little down pressure may resultin "churning" the soil, damaging the wrench and possibly damaging thedigger truck. Either extreme may result in wasted time, reduced holdingcapacity and damaged equipment.

STEP ONE — OPEN LOCKING DOGS

Before installing drive end assembly inlocking dog assembly, open dogs bypulling outward and twisting to outsideposition. NOTE: Locking dog assemblyhas three ring positions. Middle positionholds wrench drive end assembly. Insidering position allows locking dogs to holdanchor rod. Outside position releasesdrive end assembly from locking dogassembly.

HOW TO USE POWER-INSTALLED SCREW ANCHORS

STEP SIX—RETRIEVE WRENCH

Position locking dog rings in middle posi-tion and withdraw wrench. Anchor rod willremain in ground.

Complete installation by installing eye nut.

STEP SEVEN—ATTACH ANCHOR EYE NUT

Begin anchor in near vertical posi-tion. When anchor has a goodstart, retract boom to correctanchor angle. Complete in-stallation. During instal-lation, truck outriggersshould lift slightly. Avoidexcessive uplift. Whenlocking dogs reachground level, stopinstallation.

STEP FIVE—INSTALL ANCHOR

FOR AN INSTALLATION DEEPER THAN ONE ANCHORROD LENGTH, PERFORM FOLLOWING STEPS

REMOVE LOCKING DOGASSEMBLY AT GROUND LEVEL

Position locking dog rings in outsideposition and withdraw locking dogassembly.

ADD ANCHOR ROD EXTENSION

Add anchor extension rod to rod remaining inground.

ATTACH WRENCH ASSEMBLY

With wrench extension bolted to drive end assem-bly in the ground and locked in position at thelocking dogs, installation can proceed.

COMPLETE THE INSTALLATION

When locking dogs reach ground level, positionlocking dogs in middle position and retrieve thedrive end assembly and extension assembly.

Attach anchor eye nut and theinstallation is complete

FOR SITUATIONS WHERE OVERHEAD LINES ARE NOT ANOBSTRUCTION

STEP-BY-STEP ANCHORINSTALLATION PROCEDURE

ANCHOR WRENCH

Kelly bar adapter is attached to digger's Kellybar by a single bolt. Locking dog assemblyholds the drive end assembly. If anchor depthof one 7' rod length is desired, drive end assem-bly is all that's required. If anchor is to beinstalled deeper than one anchor rod length,the 31/2' extension assembly is attached be-tween drive end assembly and locking dogassembly to obtain added depth. PISA® an-chors should not be installed beyond 14' sincewrench retrieval is difficult beyond this depth.

STEP THREE— INSERT ANCHOR RODIN DRIVE END ASSEMBLY

Because locking dogs are now at inside position,assembly will hold anchor rod. Screw rod into the threadslocated in the hub of the anchor helix. Insert rod into driveend assembly with an upward thrust.

STEP FOUR—LOCKING ANCHOR IN PLACE

With strong upward motion, lock anchor into wrench.Locking dogs, properly closed to inside position, will holdanchor rod in wrench.

STEP TWO — INSERT DRIVE END ASSEMBLY

With locking dog rings in outside position,insert drive end asembly into locking dogassembly. Rotate rings to middle position.Drive end assembly will be captured in lockingdog assembly. Now rotate locking dogs toinside position to accept and capture anchorrod.

NOTE: Always refer to the actual supplied tooling instructions beforeany installation as conditions may require a modification inpracticed methods.

B-45

APPLICATION/INSTALLATIONTYPE SS SQUARE SHAFT AND TYPE RR

ROUND ROD ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

For transmission guy loads, 31⁄2,5, 7 and 10 foot extensions areused.

Classes 2, 3, 4, 5 and 6 (200-750inch-pound with soil test probe)


Not normally recommended fordepths beyond 35 feet. Maxi-mum installation torgue is 5500foot-pound.

For distribution and transmissionguy loads. 31⁄2, 5, 7 and 10 footextensions are used.

Classes 5, 6 and 7 (100-400 inch-pounds with soil test probe)


Not recommended for use be-yond 35 feet. Maximum installa-tion torque is 2300 foot-pound.

TYPE RR ANCHORSTYPE SS ANCHORS

INSTALLATION GUIDEOnce all safety concerns havebeen addressed, attach theKelly bar adapter and installingtool assembly to the Kelly baron the installing truck.

Insert the upper end of the an-chors’ lead section into the in-stalling tool. Position the anchorat the desired guy location andat a near vertical position; screwthe first helix into the ground.

When the first helix is buried,begin to make the angular ad-justment for the desired guyingangle.

Remember, final angular ad-justments should be made be-fore the second helix penetratesthe ground.

When the installing tool be-comes 12"-18" from the ground,disconnect it from the sectionin the ground and reconnect itto the next extension.

Align the extension with the sec-tion in the ground and bolt themtogether. (Make certain that thebolt and nut are securely tight-ened.)

Continue to drive the anchorand add extensions until thedesired torque is reached andmaintained for a minimum ofthree feet or three times the di-

ameter of the largest helix.

A minimal installation depth of threetimes the diameter of the largest he-lix (below the freeze/thaw line) is re-quired. This depth should equal orexceed five times the diameter of thelargest helix from the top surface ofthe soil vertically.

If this cannot be achieved (while stillmaintaining an adequate safety mar-gin below the anchor's minimum ulti-mate torsional strength of 5,500 ft.-lb., the anchor should be removedand replaced with an anchor havingsmaller or fewer helices. The replace-ment anchor should be installed atleast 5 feet from the first installationsite.

Although SS anchors can be installedover 100 feet deep, one should al-ways consider the economics of us-ing a shallower anchor with more orlarger helices or extensions with he-lices.

If the desired protrusion from theground cannot be achieved withoutexceeding the rated torque, the lastextension may be replaced with ashorter extension by excavation alongthe rod to the coupling bolt, but neverby unscrewing the anchor.

When the anchor reaches the desiredsetting the guy adapter is attachedusing the same attachment methodas the extensions.

B-46

APPLICATION/INSTALLATIONNO-WRENCH ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

For distribution guy loads. Ex-tensions available.

Classes 5, 6 and 7 (100-300inch-pound with the soil testprobe)

Install by hand using a turningbar or a power digger. Using adigger, adapter and installing toolis required. (see page B-30)

Can only be installed in relativelysoft soils. Maximum installingtorque 2300 foot pounds.

STEP #1 (POWER DIGGER)

Attach the appropriate Kelly bar adapter to thedigger's Kelly bar (output shaft).


Bolt the no-wrench power installation tool to theKelly bar adapter.

STEP #3(POWER DIGGER)

Start driving the anchor at a near vertical position. Once the anchor'shelix is below ground, retract the boom to the correct guy angle.

NOTE: When installation is complete, make certain that the eye of theanchor is in the correct position for guying before removingthe installation tool from the anchor.


Remove the appropriate pins in the No-Wrench anchor installationtool. Insert anchor rod eye into the tool and re-pin to the appropri-ate settings.

INSTALLATION GUIDE:

STEP #1 (BY HAND)

Insert turning bar into the opening of the forged eye on the rod andscrew anchor into ground.

NOTE: For harder soils, a small, shallow pilot hole dug with a shovelmay be required to get anchor started.

Kelly bar

Kelly bar adapter

No Wrench PowerInstallation Tool

B-47

APPLICATION/INSTALLATIONCORROSION RESISTANT DISK ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

For alkali, acid and soils withelectrolyte combinations.

Classes 3, 4, 5, 6 and 7 (100-600inch-pound with the soil testprobe)

Power digger, rod trenching tool,shovel and tamping bar.

Necessity of undercutting holelimits anchor depth. Rod trenchshould not be large or hold ca-pacity will be reduced. Both an-chor hole and rod trench must bebackfilled and tamped.

STEP #3

INSTALLATION GUIDE:

STEP #1

STEP #6

Drill a vertical hole or angled hole.

STEP #2

Cut a rod trench with a trenching tool or a smallauger.

NOTE: Trench should be narrow to avoiddisturbing soil.

STEP #4

Assemble the componentsmaking sure that the curvedsurface of the washer isagainst the curved surface ofthe anchor and the flat sideof the washer is against theflat surface of the nut.Care should be takennot to damage theplastic tube onthe rod.

STEP #5

Install anchor in hole so rod is aligned within ± 10 degrees of the guyso that strength of the installation is not reduced.

Thoroughly backfill and tamp the anchor hole and rod trench.Undercut the hole so that the anchor plate can be installed at a rightangle to the guy.

Trench

TrenchTrench

Method A Method B

Method A Method BMethod A Method B

Method A Method B

Undercut

Backfill and Tamp Backfill and Tamp

GalvanizedAsphaltCoatedAnchorRod

Short Piece ofHeat Shrink atTop of Rod

Round Plastic Tube

Disk Anchor

Insulating Washer

Forged Nut

FlatWasherSurface

CurvedWasherSurface

Method A Method B

B-48

APPLICATION/INSTALLATIONEXPANDING 8-WAY ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

For distribution guying. Use todepths of 12 feet.


Hand or power auger. Expand-ing and tamping bar or mechani-cal tamper and shovel. (See pageB-33)

Depends on backfill effective-ness. Difficult to tamp in wet orplastic soil after rain. Seepingground water can cut holdingcapacity 50 percent.

STEP #2

INSTALLATION GUIDE:

STEP #1

The hole should be drilled at a 45° to 60° angle in line with the guy.

NOTE: Hole size should be slightly larger than the unexpandedanchor. See chart on page B-17.

STEP #3

Expand the anchor with the expanding barby striking the top plate.

NOTE: The expanding bar should berotated around the anchor duringthe busting process.

STEP #4

Backfill and tamp hole.

Attach rod to anchor and lower theassembly into the hole.

B-49

APPLICATION/INSTALLATIONCROSS PLATE ANCHORS

STEP #3

ANCHORAPPLICATIONS



LIMITATIONSON USE

For medium and heavy trans-mission guying. Installed in ma-chine bored holes. Load-basedon using a 400 square inch an-chor to a 24" hole.


Power digger, rod trenching tool,shovel and tamping bar.

Necessity of undercutting holelimits anchor depth. Rod trenchshould not be large or holdingcapacity will be reduced. Bothanchor hole and rod trench mustbe backfilled and tamped.

INSTALLATION GUIDE:

STEP #1

STEP #2

Drill a vertical or angled hole.

Undercut the hole so that the anchor plate can be installed at a rightangle to the guy.

Cut a rod trench with a trenching tool or a smallauger.

NOTE: Trench should be narrow to avoiddisturbing soil.

STEP #4

Assemble rod to anchor and install the anchor inside the hole sothat the rod is aligned within ± 10° of the guy.

NOTE: Improper alignment may reduce holding capacity.

STEP #5

Thoroughly backfill and tamp the anchor hole and rod trench.

Trench

Trench

Undercut

B-50

APPLICATION/INSTALLATIONEXPANDING POLE KEY ANCHOR

STEP #2

ANCHORAPPLICATIONS



LIMITATIONSON USE

For reinforcing poles at theground line where load is unbal-anced in soft soils or in areassubjected to constant high winds.

Classes 3, 4, 5 and 6 (200-600inch-pound with soil test probe)

Extra anchor rod, expanding barand shovel. (See page B-33)

Will not take the place of guyingon a heavily-loaded structure.

INSTALLATION GUIDE:

STEP #1

NOTE: If desired, a second pole key anchor may be used at the top (ground level) of the hole on the opposite side of the pole.

Straighten the pole.

Attach anchor to rod. Lower anchor assemblyinto pole hole (beside the butt of pole) and bustanchor open with the Expanding/Tamping bar.

STEP #3

Remove rod from anchor and hole. Backfill and tamp hole.

B-51

APPLICATION/INSTALLATIONEXPANDING ROCK ANCHORS

STEP #2

ANCHORAPPLICATIONS



LIMITATIONSON USE

For medium-duty guying wherepoles are in or near rocky areas.

Classes 0 and 1.

Hand or power drill and turningbar.

In extremely soft rock, it may benecessary to use grouting toavoid rock crumbling which wouldaffect holding capacity. Drillingcan be a tedious job in somerock types.

INSTALLATION GUIDE:

STEP #1

Drill the hole by hand or with a power tool

NOTE: Hole size is determined by the size of anchor used. Refer to thechart on Catalog Page B-21.

Turn the rod until the anchor is expanded tight against the sides of thehole. Backfill and tamp hole.

STEP #3

Push the anchor assembly down inside thehole.

B-52

APPLICATION/INSTALLATIONBUMPER POST ANCHORS

ANCHORAPPLICATIONS



LIMITATIONSON USE

Serves as instant ground protec-tion for transformers, switchgear,guys and streetlights.

Commonly installed throughblack top.

Power digger and wrench as-sembly. (See page B-22 for re-quired installing tools)

Maximum installing torque 8,000foot pounds.

Step #1: Assemble the drive tool tothe correct Kelly baradapter, using the six 1⁄2inch diameter grade 5bolts supplied with thetool.

Step #2: Attach the drive toolassembly to the powerdiggers Kelly bar, usingthe supplied Kelly baradapter’s bent arm pin.

Step #3: Stand the bumper postupright and slide it into thedive tool assembly.

Step #4: Raise the Kelly bar untilthe bumper post swingsfree of the ground andmaneuver the assembly tothe marked installationlocation.

Step #5: Lower the Kelly bar untilthe point of the bumperpost sticks into theground’s surface.

Step #6: Plumb the bumper post toensure a straight installa-tion.

Step #7: Apply down pressure onthe bumper post androtate it in a clockwisedirection.

Step #8: When the helix has pen-etrated approximately 1-foot, replumb the post.

Step #9: After the desired depth isreached, disconnect thebumper post from the drivetool assembly and cap.

B-53

is designed so the wrench, whenproperly engaged, bridges thehollow section of the anchor shaftpreventing it from having to carryany significant torsional load. Ifthe wrench does not engage theanchor shaft sufficiently to bridgeits hollow section, that sectionbecomes the weak link in thesystem and fracture will occur wellbelow the anchor's rated torsionalstrength. To avoid a recurrence,you may use the same type andsize anchor, but be sure to screwrods all the way into the anchorand couplings; lock the anchorassembly into the wrench with thelocking dogs; and follow the anchorduring installation maintainingproper down pressure at all times.

HOW TO SOLVE ANCHOR PROBLEMS

Know what to look for

observe the fracture surface. Thisis usually quite easily done; justwithdraw the anchor rod, and youshould find the top part of theanchor shaft still attached.

If the fracture surface intersectsthe drilled hole in the shaft (seebelow left), insufficient wrenchengagement was the problem.

The PISA® anchor/wrench system

During the rare time you dohave a problem installing power-installed screw anchors (PISA® )you can turn the bad experienceinto a benefit that will help youavoid similar troubles in thefuture. The secret is analyzingexactly what happened when youencounter a problem. Look attooling or for anchor damagecaused during the installation. Thedamage can tell you a great dealabout what went wrong, so theimproper action can be avoided inthe future.

One of the most common problems,particularly with PISA® anchors, isan anchor shaft fracture duringinstallation. Because driving effortis transmitted from the anchorinstalling wrench to the anchorhelix via the anchor shaft, if shaftstress exceeds the shaft's ultimatestrength, the anchor shaft willfracture.

Fractures are not pleasant occur-rences, but they tell you a greatdeal about what happened, andwhat you need to do to prevent itfrom happening again. If youexperience a fracture, recover atleast part of the anchor shaft and

B-54

➠

The fractures shown (above right)are typical for solid shafts anchorslike the SS (above). Contrary tocommon belief, there is no practicaldifference in these two types offractures; more specifically, theType A fracture (the above right)is not necessarily indicative ofbrittle shaft material. In fact, wehave never seen such a fracturethat was due to brittle shaftmaterial. It is true that, for puretorsion, the Type A fracture wouldbe typical for a brittle materialwhile a Type B fracture (aboveright) would be typical for a ductilematerial.

It has been claimed that a helical-end wrench which engages theanchor shaft along the upper helixsurface increases the torsionalcapacity of the anchor by forcing itinto a Type A fracture whichnaturally has a larger fracturesurface area than a Type B frac-ture. Actually, such wrenches offerlittle practical advantage becausemost of the time they merely forceanchors to fracture the way theywould have done anyway.

If you are able to rule out wrenchengagement problems, there arestill a couple of possibilities left. Ifthe anchor seems to be encounter-ing obstructions, or the operatordoes not seem to maintain align-ment, impact loading or excessivebending moments may cause theanchor to fracture at reducedtorque. Try the same type and sizeanchor again but with slowerrotation speed and additionaloperator care. If on the other handthe soil seems homogeneous andthe alignment is maintainedproperly, try a smaller or higher-strength anchor. Remember thatinstallation torque is an

Type A Type B

Fracture problems can occur withthe Square Shaft (SS) anchor if theanchor shaft is not pinned into thewrench, couplings are not properlybolted up, or they are subjected togross misalignment. Such mis-alignment might be caused byleading off after encountering ahard stratum at an oblique angleor obstructions in the ground.

In either of the first two cases, theshaft tends to work its way out ofthe wrench or coupling. Once itgets far enough out that the drilledsection is loaded torsionally, it willbreak well below its rated strength(see below)

In the third case,the bendingmoments at thejoints causegradual "bellingout" of the cou-pling (see below)again leading totorsional loading of thedrilled section and failure belowrating. In all cases, the fracturesurface will intersect thedrilled hole. In the lattertwo cases, failure willusually occur belowthe ground lineand onlyvisualinspection ofthe couplingwill show thedifference. Toavoid recurrence,make sure that the coupling boltgoes through both coupling andshaft, rather than passing abovethe shaft end. Pin the top shaftinto the wrench during installa-tion, and avoid misalignment alongthe anchor shaft or between anchorand Kelly bar.

If a hard stratum at an obliqueangle to the anchor's path is theproblem, change the anchor batterso that the angle is closer to 90degrees if possible, or stop downpressuring the anchor as it reachesthe stratum and allow it to auger a"pocket" which will counteract thetendency to lead off. In obstruction-laden soil, be prepared to removethe anchor, move over, and tryagain if the anchor starts leadingoff.

In the absence of engagementproblems, the appearance of theshaft fracture surface is not ofmuch significance.

However, without engagementproblems, virtually all shaftsfracture close to a helix wherestress conditions in such areasinclude the non-axisymmetricstructure (helix projecting from oneside of shaft) and non-homoge-

neous material (shaft parentmetal, weld filler metal, helixparent metal, zones of intermixing,and heat-affected zone).

End restraint effects from wrenchengagement and bending momentsresulting from failure to maintainalignment or the anchor's strikingobstructions in the ground may alsoaffect the stress conditions. Theresult is that the stress conditionscausing fracture are triaxial, nottorsional and Type A fractures areneither unusual nor indicative ofbrittle material.

B-55

indication of soil strength,so if the torque is higherthan expected, the soilmust be stronger thanexpected and a smalleranchor should develop theload.

over. Either way, the next step isto move over a few feet and tryagain, being sure to maintaincrowd this time.

Unfortunately maintaining downpressure is not a cure all. In glacialtills and other obstruction-ladensoils, too much crowd can causespinout. An anchor should beallowed to work its way throughsuch soils with minimal downpressure. If you try to force itthrough, chances are fairly goodthat the helix leading edge will getbent (destroying its helical formand the attendant thrust) or tornoff. You may or may not be able toretrieve the anchor, depending onhow badly it is damaged, but youwill have to replace it regardless.

You might try again, usingextra care to maintain justenough down pressure tokeep it penetrating. If youfail again, try an anchorwith smaller or stronger(i.e., thicker or higher-strength material) helices.Or, consider ChanceTOUGH ONE® anchors.They're designed fordifficult soils.

Also remember it's in theseobstruction-laden soils thatthe curvilinear leadingedge really shines thanksto its tendency to guide theanchor around obstruc-tions without hanging upand its greater resistanceto bending. So if you'reusing anchors withstraight leading edges anda curvilinear equivalent isavailable, try it.

Even if the operatormaintains good control ofcrowd, keeping the anchoradvancing at one pitchlength per revolution,unforeseen soil conditionscan still lead to spinout.The installation may beprogressing nicely withlittle or no down pressurerequired when the anchorcan unexpectedly encoun-ter a hard stratum or evena large rock or otherobstacle and the resistanceto penetration shoots up

becoming greater than the com-bined crowd and thrust. Theanchor may spin out before theoperator can react and then refuseto start advancing again.

In such cases you can usuallyretrieve the anchor. Look forabrasion or gouging on lowersurfaces to confirm the problem,then move over and try again.

This time be prepared to applyheavy down pressure on the anchorat the first sign of extra resistance.If it still doesn't go, try using more,smaller helices or, if the problemarea isn't too thick, predrillingthrough it. In the latter case, besure the upper helix is driven atleast five times its diameter deeperthan you predrilled.

Another problem some-times encountered isanchor "spinout", or rota-tion without axial penetra-tion. As an anchor isrotated in the soil, theinclined plane of each helixworks against the soilproducing a thrust whichtends to move it axially.Under perfect conditions, itwill advance one pitchlength per revolution andsoil disturbance will beminimal. If the anchoradvances more or less thanone pitch per revolution,something has to give.Either the soil gets churned(likely), or the helix getsbent or torn off (not solikely).

Spinout can result fromseveral different conditionsrequiring different correc-tive actions. You'll have torely on observations of in-stallation conditions andanchor damage to guideyou. Take the easy casefirst.

If the operator fails tofollow the anchor so thatthe digger holds back on theanchor instead of leading it, theanchor may be unable to advanceat the proper rate. The soil losesstrength due to the resultantchurning and becomes unable towork effectively against the helicalplate. Because neither the soil northe digger is now providing thethrust, the anchor ceases to pen-etrate. If you're lucky, simplyapplying down pressure to theanchor will get it started again.Sometimes, however, the undis-turbed soil below the anchor is sostrong that the down pressure isnot enough to restart the anchor. Itmay be that you can back theanchor out because the soil above itwill be weaker. If not, all you cando is abandon the anchor and start

B-56

Operator and groundman workingtogether are critical to a successfulanchor installation.Pisa 4® anchor shown below.

➠

Yet another way an installationattempt may fail is refusal wherethe torque required for continuedpenetration exceeds the capacity ofthe digger, but not that of theanchor. In such cases everythingcomes to a halt. As with the previ-ous cases, there is not a single,universal fix for this circumstance.The next step depends on thetorque at refusal, whether highertorque is available (by bringing inanother machine for instance), thedepth at refusal, possible soilstratification, and anchor availabil-ity.

Again, take the easy case first. Ifthe top helix is at least five diam-eters (that is, a distance equal tofive times its own diameter) belowthe ground surface, three diam-eters into the current soil stratum,and three diameters below thelevel of seasonal change in soilproperties, and the installationtorque was above the minimumrequired to achieve the desiredload capacity during the final threediameters of penetration, considerleaving well enough aloneeven though the rod or shaft maybe sticking further out of theground than desired. Replacing thetop rod or shaft section, even if itrequires some digging, may bebetter than the other alternatives.

If on the other hand, the installa-tion does not meet all of the abovecriteria, things can get prettysticky. If the torque you attainedwas 75% or less of the anchor'storque rating, bringing in higher-torque equipment is worth consid-ering. Otherwise you run the riskof bringing in the new equipmentand getting another foot or two ofpenetration, then having to shutdown to keep from over-torquingthe anchor.

If bringing in a higher-torquemachine is not feasible, considerpredrilling. Particularly on round-shaft anchors, predrilling a holeslightly larger than the shaft sizecan significantly reduce installa-tion torque with little affect onaxial capacity. This approach is notas useful with anchors subjected tolateral loads, however, becauselateral capacity and stiffness maybe reduced.

Again, if you do predrill, be sure todrive the top helix at least fivediameters below the predrilleddepth.

If the soil contains obstructions, itis possible that the anchor just got"hung up" on something. Often itis possible to back up and thenwork your way past the obstruc-tion. In this case, as in the previ-ous one of anchor breakage, it isbetter to use more, smaller helicesthan fewer, larger ones, and acurved leading edge on the anchorcan be very useful.

If none of the previous suggestionsdoes the trick, contact yourChance anchor man. In somelimited situations he may be ableto recommend a larger anchorwhich can develop the requiredload capacity at a lower torque.Otherwise, he will help you selectan alternate type of anchor for thejob.

Even if you manage to get past allthe previously mentioned pitfalls,there is still more criterion forsuccess. The anchor has to holdthe load you designed it for.

B-57

Installation torque can bean excellent indication ofanchor load capacity, ifyou follow the rules.Otherwise, it can bemisleading. Basically, it isan indication of the effortnecessary to compress andshear the soil around theanchor to allow penetra-tion.

Load capacity, of course, isalso a measure of theeffort necessary to com-press and shear the soil,so it should come as nosurprise that the formercan be used to predict thelatter. One major differ-ence between the twowhich must be taken into ac-count, though, is that only the soilin the immediate vicinity of thehelices affects their installationtorque, while their load capacityis affected by a much largervolume of soil located eitherabove, for tension anchors, orbelow, for compression anchors.This is why we recommend thatinstallation torque values overthe final three diameters ofpenetration be averaged todetermine load capacity. If onlythe final torque is used, a tensionanchor which has just passedfrom a softer layer to a harder onewill be overestimated because thesofter soil above will not affect thehelices torque but will affect theirload capacity. Averaging torque isalso important for compressionanchors, but because compressioncapacity is affected by soil whichlies below the anchor and has nothad the opportunity to affectinstallation torque, unexpectedresults may still come.

An anchor may fail to hold a givenload for one of two reasons: Eitherthe anchor fails structurally or thesoil fails around it. Sometimes ananchor failure is accompanied by asudden movement of the shaft orrod and/or some audible indication.Other times it is not. Soil failureson the other hand, are usuallyrecognizable by gradual movementof the shaft and absence of anyaudible indication (one exceptionbeing soil failure when the upperhelix is less than three diametersdeep, which is usually character-ized by eruption of the soil at thesurface).

One structural failure mode whichoccurs occasionally is bending ofthe helix under tension of compres-sion loading. When this occurs, theanswer is to use anchors with morehelices to share the load or stron-ger ones to withstand the highstresses.

With PISA® anchors, the rodis often the weak link.Failure may occur by frac-ture, thread stripping, or, ifthe application is controlledby deflection, rod yield. If astronger rod is available, useit. If not, consider using anSS anchor.

With SS anchors, the weaklink is normally the couplingbolt, although one doesoccasionally see the shaftsplit on its axis between thehole and the end if the boltstrength happens to besignificantly above mini-mum.

Soil failure can be cured byusing more or larger helices tospread the load out over a largervolume of soil. Soil failure andhelix bending usually give thesame indications at the surface, soit becomes necessary to recover theanchor and observe the helices todifferentiate between them.However, it may not be possible tounscrew the anchor in such casesbecause the disturbed soil or benthelix cannot generate the neces-sary axial thrust. In such cases,use an anchor with more helicesbecause this will cure eitherproblem.

Remember, our experience indi-cates that 95 out of 100 Chancescrew anchors are smoothly andsuccessfully installed. The tech-niques we've shared with you canhelp you diagnose and solve anyanchoring problems that youencounter and move you closer tothe goal of a successful anchorinstallation.

B-58

TOOLS MAINTENANCE

Anchor tools requireregular upkeep

As with most mechanical de-vices, Chance anchor-installingtools periodically require mainte-nance checks to assure peak perfor-mance.

TORQUE INDICATOR

In the case of the Shear-Pin TorqueLimiter, (see drawing below orphotograph at right) you should beable to rotate the tool shear halvesindependently from one anotherusing a smooth-turning action. Ifrotation cannot be made by hand orif movement is rough, disassembleto check the thrust bearing, wash-ers and pin for wear.

If the halves are dull, they need tobe sharpened by surface grinding. Alocal machine shop can perform thisservice. When reassembling theindicator, coat thrust-bearing pin,washers and shear surface withgrease.

Secure top shear half to the lowerhalf by tightening the center boltsnugly. Back off one roll-pin slotand lock with roll pins. Check cap

screws for wear and replace ifnecessary. Torque cap screws tominimum of 60 ft.-lbs. All outputstring bolts used in the drive-trainsystem should be checked fortightness. Loose or damaged boltsmay fail at or below the anchor'storque rating and contribute todamage elsewhere within the toolassembly.

When a torque indicator is used in thewrench system, it is positionedbetween the Kelly bar adapter andlocking dog assembly.

Chance mechanical torque indicatoruses no shear pins.

B-59

If locking dogs do not rotatesmoothly or engage easily into the“in” and “out” positions, wrench androd capture may not be correct.Under such circumstances, if dogsare worn or damaged, order newones from Chance.

When inspecting the Locking-DogAssembly, check to see (above) theset screws holding the two-dogassemblies are in position. Thereare two. One below each “dog.” Theinnermost set screw is 1⁄2" x 5⁄8". Theoutermost screw is 1⁄2" x 3⁄8".

Another portion of the Locking-DogAssembly needing careful inspec-tion is the square socket where thewrench drive tube is inserted (seephotograph below). The socket canbecome worn from long-term useand/or poor wrench drive-tubealignment. Under such circum-stances, the drive-tool end canbecome damaged. By monitoringthe 11⁄8" holes located at the top ofthe wrench-drive tube for wear, youcan detect square socket wear thatis beginning to damage the wrench.Drive tube wear at the 11⁄8" holesshows the Locking-Dog Assembly ispicking up torsional load on thewrench-drive wall inside the holes.Such wear indicates you need a newLocking-Dog Assembly.

Notice square socket wear on theLocking-Dog Assembly in the photo-graph below.

NEWWORN

LOCKING-DOG ASSEMBLY

The Chance Locking-Dog Assemblyis another mechanical-anchorinstalling device that needs periodicinspection.

When the Locking-Dog Assembly iscorrectly positioned and in goodworking order, it performs smoothlyand freely ensuring complete andpositive capture of the anchor-installing wrench drive tube andanchor rod.

Figure 3

LOCKINGDOG ASSEMBLY

11/4"WRENCHDRIVE-TUBEHOLES

KELLYBAR

FLANGE

FLANGE BOLTHOLES

SET SCREWS

SQUARESOCKET

COIL LOCK

KELLY BARADAPTER

1/2" x 3/8"Set Screw

Locking DogHousing

Dog


B-60

bar adapter to Kelly bar. RetainingPins are now included with all newKelly bar adapters, square-shaftanchors and bumper-post installingtools.

Before any anchor installation,always check output bolts to ensurethey are tight. Lost or damagedbolts can cause failure at or belowthe anchor torque rating or contrib-ute to damage elsewhere on theoutput string. Check all tools andparts for wear or damage andreplace as necessary.

Photo 2 shows drivetube damage resultingfrom poor wrenchalignment duringinstallation of anchors.

Photo 3 shows anundamaged drive tube.

Photo 3

KELLY-BAR ADAPTER

When ordering tooling for a newtruck, the Kelly bar should bemeasured across the flats (seeFigure 3 on pg. B-53) to establishthe proper size between the truckKelly bar and Chance Kelly-BarAdapter.

Chance number P630012HD Kelly-bar adapter has a 25⁄8" hex insidediameter. This particular adapter isoften confused with a P630011HDAdapter with 21⁄2" hex. If aP630012HD is used on a 21⁄2" hex,

the Kelly bar will tend to round outthe hex socket of the Kelly baradapter. In this case, the pinholding the Kelly bar adapter to theKelly bar will begin to take up loadand elongate the hole. This willeventually split-out the top of theKelly bar adapter (see photographbelow).

RETAINING PIN

The Chance Retaining Pin (right)holds the Kelly bar adapter to theKelly bar with a loose fit so theRetaining Pin will not take up load.The Pin consists of a bent arm andklik pin. This gives a positiveconnection at both ends of the pin toprotect operators from accidentalpin ejection due to drive-traintorsional forces. Chance has acomplete line of retaining pins toreplace bolts previously used tosecure tooling to anchor and Kelly

Photo 2

Abused Kelly bar adapter hole elonga-tion caused by the retaining pinpicking up torsional load from theKelly bar. This is an indication the hexshape of the Kelly bar adapter is beingrounded off.

Unused Kelly Bar Adapter

SUMMARY

During anchor installations main-tain adequate down pressure andkeep anchor-drive wrench in align-ment with anchor to preventuneven wear or damage to the tool.Misalignment puts an extremelyhigh stress on the end of the wrenchwhere the wrench fits over theanchor. This can possibly cause thedrive tube to split on the end.

Check all tools and parts for wearor damage and replace as neces-sary. Order replacement parts fromChance. Properly used and withminimal service requirements,Chance tools will give extendedservice.

B-61

Safe, dependable

ANCHOR TOOLING

With the horsepower race forinstalling trucks and Power-Installed Screw Anchors (PISA®)increasing with each passingdecade, anchor installing toolsremain a very important part ofthe successful anchoring equation.Without the tools to handle theincreased torque loads deliveredby today’s diggers, power-installedanchoring will literally grind to ahalt.

Chance introduced the first PISA®

anchor along with the tooling toinstall it in 1959. This 4,000 ft.-lb.(PISA® 4) anchor was followed byChance 5,000 and 7,000 ft.-lb.anchors. The tempo of the anchorrace to keep up with the increasedcapability of diggers and thedemand of utilities to anchor inharder soils served as the catalystfor the 1980 Chance introductionof the 10,000 ft.-lb. hollow-hubSQUARE ONE® anchor.

For the decade of the ’80s, theSQUARE ONE® anchor enabledutilities to anchor in soils theycould only dream about penetrat-ing with power-installed screwanchors during the previousdecade. With digger torquecapabilities continuing to increase,Chance introduced the 8,000 and15,000 ft.-lb. TOUGH ONE® anchorswith high-strength tooling in 1990.A unique and proprietary steel-casting process made TOUGH ONE®

anchors possible.

Because the installed cost of PISA®

anchors is substantially lowerthan “buried” anchors, and be-

cause utilities desire to installpower anchors in harder soils, thetrend toward heftier anchors andstronger tooling will continue.Digger trucks with 20,000 ft.- lb.of torque capability are notuncommon today.

Mechanical torque indicator posi-tioned between Kelly bar adapter

and locking dog assembly.

B-62

Note: The shear strengthfor a Grade 5 bolt (52,400psi) is reduced under thefollowing conditions:

• Bent tooling

• Cycle fatigue

• Loose nuts

• Shock loading

BOLT SHEAR STRESS vs. INSTALLATION TORQUE10,000 FT. -LB. TOOLING5-1/4 INCH BOLT CIRCLE

Based on SAE J429 Gr. 5 1/2" Bolts

60,000Bolt Shear Stress (PSI)

55,000

50,000

45,000

40,000

35,0009,000 10,000 11,000

INSTALLATION TORQUE (FT.-LBS.)

12,000 13,000 14,000 15,000

Minimum Yield in Shearfor Grade 5 Bolt

High-strength Kelly bar adapter.Socket lengths 7 - 81/8".

Standard-strength Kelly bar adapter.Socket lengths 3 1⁄2 - 8 1⁄8".

50,000Bolt Shear Stress (PSI)

40,000

INSTALLATION TORQUE (FT.-LBS.)

Minimum Yield in Shearfor Grade 2 Bolt

30,000

20,000

10,000

0

11,000 12,000 13,000 12,000 15,000 16,000

Based on SAE J429 Gr. 2 5/8" Bolts

BOLT SHEAR STRESS vs. INSTALLATION TORQUE15,000 FT. -LB. TOOLING7-5/8 INCH BOLT CIRCLE

6-Bolt Pattern

12-Bolt Pattern

B-63

The Kelly bar adapter and lockingdog assemblies both have 75/8" boltcircles. This compares to 51/4"circles on moderate-strengthtooling. The larger circles put lessstress on bolts during installation.

Anchor tooling should not betorqued above its rating. Boltsshould be regularly checkedfor tightness and wear.

Kelly bar adapter and locking dogassembly secured to the diggerKelly bar. Drive wrench is insertedinto the locking dog assembly.

Kelly Bar Adapter

5 1⁄4" Bolt Circle on Standard-Strength Tooling (10,000 ft. lb.)

7 5⁄8"

Locking Dog Assembly

This helps allow installing torqueto reach 15,000 ft.-lb. duringdemanding installations. If thebolts used to connect the Kelly baradapter to the torque indicator orlocking dog assembly are over-torqued, bolts can shear.

Our high-strength PISA® toolinghas longer sockets on the Kelly baradapters and locking-dog assem-blies. This results in less wrenchwobble during installation andreduces stress on bolts.

High-strength Kelly bar adapterand locking-dog assemblies arethicker and heavier to give addedstrength. The anchor-drive wrenchis also thicker to give addedfatigue life and increased torquestrength.

High-Strength Tooling

Because of the forces impacting thetooling used to install high-strengthPISA® anchors during installation, wehave added features to ensure goodperformance and enhance safety.

5 1⁄4"

7 5⁄8" Bolt Circle on High-Strength Tooling (15,000 ft. lb.)

B-64

Proper Maintenance andUse of Tooling

Anchor installing tools requireregular upkeep. All output stringbolts used in the drive-trainsystem should be checked fortightness. Loose or damaged boltsmay fail at or below the anchor'storque rating and contribute todamage elsewhere within the toolassembly.

output string, also check the setscrews of the locking-dog assem-bly. The two set screws (see belowleft) hold the two-dog assembliesin position. There is a screw beloweach “dog.”

During anchor installation, keepanchor-drive wrench in alignmentwith anchor to prevent unevenwear or damage to the tool. Mis-alignment puts extremely highstress on the end of the wrenchwhere the wrench fits over theanchor. This can possibly causethe drive tube to split on the end.

Lost or damaged bolts can causefailure at or below the anchortorque rating or contribute todamage elsewhere on the outputstring.

Tools and parts should always bechecked for wear or damage andparts should be replaced as neces-sary. Replacement parts should beordered from Chance.

While checking all bolts of the tool

Locking dog assembly components.

In the middle position, the lockingdogs hold the wrench drive tube. Inthe inside position, the locking dogshold the anchor rod and drive tube.

ANGLED FACE OF DOG POINTINGTOWARD SOCKET END OF CASTING

SET SCREW HOLEAND COUNTER-SINK LINED UP

DOG

DOG HOUSING

COUNTERSINKSET SCREW

LOCKINGDOG ASSEMBLY

WRENCHDRIVE-TUBE

KELLYBAR

1/2" x 3/8" Set Screw

Locking DogHousing

Dog


B-65

ANCHOR INSTALLING TOOL SAFETY

Recommended TighteningTorques

Do not use 10,000 and 15,000 ft.-lb.tooling above its rated performancestrength.60 - 75 ft. - lb.

76 - 95 ft. - lb.1/2" Gr. 55/8" Gr. 2

Use proper tooling

The locking dog assembly and Kellybar adapter of the high-strengthwrench assembly use a 75/8" boltcircle with 5/8" Grade 2 bolts com-pared to the 51/4" bolt circle with 1/2"Grade 5 bolts used on standard-strength 10,000 ft.-lb. tooling. Thelarger bolt circle used in the high-

strength tooling puts less stress onbolts and, in conjunction with thelarger bolts that are used, allowsinstalling torques to reach 15,000ft.-lb. during demanding installa-tions.

During the installation of power-installed screw anchors (PISA®), itis essential to use installing toolsand anchors that are properly ratedfor your trucks. Because of the hightorque energy used in installinghigh-strength anchors with the newgeneration of trucks, the control ofhazardous torque depends onseveral factors but especiallyproper tools.

Use 15,000 ft.-lb. toolingwhen torque exceeds10,000 ft.-lb.Whenever anchor torque capacityand digger output capacity exceed10,000 ft.-lb., use the 15,000 ft.-lb.Chance Tough One® anchor wrenchassembly (see page B-28). Thishigh-strength assembly is designedfor today's anchors and installingtrucks.

Chance Mechanical Torque Indicator

B-66

Note the difference in size of the15,000 ft.-lb. wrench tube on the leftcompared to the 10,000 ft.-lb. standardtube on the right.

true for the drive wrench portion ofthe tool assembly. Chance wrenchtube design is based on the accu-mulation of more than 30 years ofexperience. The steel used to makewrenches is processed to achievethe right balance of hardness,

strength, and toughnessto stand up to thedemanding chore ofinstalling anchors.

Anchor wrenches canfail by applying torqueabove their rating. Theopportunity for this tooccur increases if thewrench is subjected tobending, shock loadingdue to rocks, or anchorbreakage. Chancewrench tubes aredesigned to fail in a

ductile manner. In other words, ifthe tube fails, it will fail in amanner that helps protect workers.Generally, it will twist along its

length under conditions of failure.

Wrench tubes can be processed tomake them harder and stronger inan attempt to increase their torquerating. However, limitations inwrench cross-section geometrymake this a potentially dangeroussituation because it can cause thewrench to fail in a non-ductile orbrittle manner. Brittle failures aredangerous to workers because thewrench tube can actually fractureinto pieces and fly outward fromthe tool string.

Chance wrenches do not have thisproblem. They are processed tomaintain ductility for a safe design.

Over time, all wrench systemcomponents will wear due tocontinued use. This is normal andshould be monitored to establish atool component replacementschedule.

High-Strength PISA® tooling has alonger socket on the Kelly baradapter and locking dog assembly.This results in less wrench wobbleduring installation and reducesstress on bolts. Both products arethicker and heavier than 10,000 ft.-lb. rated units, so there's greaterstrength. A thicker anchor-drivewrench gives added fatigue life andincreased torque strength.

If a single installing tool componentfails, the tremendous torsionalenergy transmitted by the toolingcan be released violently. Thissudden energy release can causepersonal injury or property dam-age. That's why it is essential theproper anchor-installing tools beused, including not interchangingthe installing tools of differentmanufacturers. Whether you useinstalling trucks with more than10,000 or 15,000 ft.-lb. of installingtorque capability, do not exceedanchor or tool ratings. To do so canstress the wrench system beyondits designed safe limit. Installinganchors beyond the safety limit willsubject the wrench system and theoperators to a hazardous condition.

Chance tools made ofductile material

The selection of materials used inthe manufacture of anchor toolingis very important. This is especially

The 15,000 ft.-lb. high-strength wrenchassembly is on the left. The standard-strength 10,000 ft.-lb. wrench is on the right.

B-67

Any worn bolts, pins and coil locksshould be replaced with partsspecified by Chance. We carefullyselect retaining pins and fastenersbased on laboratory tests and fieldtrials. Standard utility constructionhardware is not acceptable forChance anchor tool applications.

Using worn or damaged bolts, bentarm pins and coil locks can causewrench system failures even whenthe tools are properly used. Theimportant thing to remember is torefit tool components when re-quired with the correct replacementparts found on pages B-25 throughB-33.

Types of standard toolstress above 10,000 ft.- lb.

Wrench: Above 10,000 ft.-lb. oftorque, standard Chance CatalogNumber C102-1583 wrench tubeswill generally obtain a permanenttwist along the length of the tube.However, rocky soil conditions canresult in torque peaks well above10,000 ft.-lb. This can violentlysplit open the wrench end. This isespecially true if the tool string issubjected to bending, or if theanchor being installed suddenlyfails.

Bolt Circle: Bolt circle strength is afunction of the diameter of the boltcircle, the diameter of the bolts,and the number and type of boltsused. Above 10,000 ft.-lb., the 51/4"diameter bolt circle used toattach standard-strength wrenchcomponents is being stressedbeyond its safe limit. If theapplied torque continues to beabove 10,000 ft.-lb., the bolts canfail in shear causing tools toviolently separate as the torqueenergy is released. In addition, thesheared bolts can fly outward fromthe tool string.

Adapter Failure: Installing an-chors above 10,000 ft.-lb. can alsocause problems with Kelly baradapters and locking dog assem-blies, especially if the tools aresubjected to bending. With the

Kelly bar adapter, the hex socketcan be enlarged or “lipped open.”This will cause the bent arm pinattaching the Kelly bar adapter tothe Kelly bar to transmit torque,something it was not designed todo. Torque on the pin can cause itto break, release torque energy andfly outward from the tool string.

Locking dog adapter sockets willalso lip open or warp when thetorque exceeds safe limits. This cancause many problems, the primaryone being excessive force againstthe locking dogs and dog housing.Continued use of a damagedlocking dog adapter causes the dogsand housing to wear away quickly.A worn locking dog can prema-turely release an anchor, and rodwhen the operator is not expecting

it. All of these potential failuremodes apply as well to Chancehigh-strength tooling if used above15,000 ft.-lb. of torque.

Chance anchor tooling is perfor-mance rated to provide safe,dependable use up to each tool’srated torque capacity. As a power-installed screw anchor user, yourchoice is simple. For anchoring upto 15,000 ft.-lb. use Chance high-strength 15,000 ft.-lb. tooling. Fortorques below 10,000 ft.-lb., useChance standard-strength tooling.

If the bolts used to connect thekelly bar adapter to the torqueindicator or locking dog assemblyare overtorqued, bolts can shear.

B-68

ANCHORTOOL

MAINTENANCE

®

How to detectand

help preventdamage to tooling.

Kelly Bar Adapter continued . . .

B-69

KELLY BAR ADAPTER

Elongation of Kelly bar holes.

Cause • The retaining pin carrying torque due to a worn Kelly bar or a worn or improperly sized Kellybar adapter socket.

Action: • Replace the Kelly bar adapter. Make sure the new adapter is the proper size for Kelly bar.Replace worn Kelly bar.

Wear

Cause: • Piloted Kelly bars.• Applied torque in excess of rating.• Worn Kelly bars.• Normal usage over long period of time or in obstruction-laden soils.• Side loading or tool misalignment during anchor installation.

Action: • Replace the Kelly bar adapter. Chance now sells only heavy duty Kelly bar adapters which lastlonger with piloted Kelly bars.

• Avoid misalignment during anchor installation.• Replace worn Kelly bar.

Kelly Bar Adapter continued . . .

B-70

KELLY BAR ADAPTER

Retaining pins & coil locks

Cause: • Normal usage over long period of time.• Worn Kelly bar or worn or improperly sized Kelly bar adapter or installing tool socket.• Use of wrong size retaining pin.

Action: • Replace with proper size retaining pin and coil lock.• Replace worn Kelly bar or Kelly bar adapter or installing tool.

Cause: • Applied torque in excess of rating.• Failure to maintain proper bolt tightening torques.

Action: • Replace the Kelly bar adapter.• Do not exceed tool's torque rating.• Keep bolts tightened to recommended torque.

ElongationofFlangeBoltHoles

B-71

Cause: • Applied torque in excess of rating.• Failure to maintain proper bolt tightening torques.

Action: • Replace the locking dog assembly.• Do not exceed tool's torque rating.• Keep bolts tightened to recommended torque.

ElongationofFlangeBoltHoles

Locking Dog Assembly continued . . .

LOCKING DOG ASSEMBLY

Cause • Normal usage over long time.• Applied torque in excess of rating.• Side loading or tool misalignment during anchor installation.

Action: • Replace locking dog assembly (may also be necessary to replace drive tube).• Do not exceed tool's torque rating.• Maintain proper alignment during anchor installation.

SquareSocketWear

B-72

Locking Dog Assembly continued . . .


Worn/CrackedDogs orDog Housings

Cause • Set screws that are loose or missing.Action: • Remove and replace set screws using replacement kit.

LooseDogs

Locking DogHousing



Dog

CRACKS

Cause • Worn locking dog assembly socket.• Drive tube wear.

Effect: • Dog assemblies share torsional load.Action: • Inspect locking dog adapter and wrench tube and replace as necessary.

• If locking dog adapter is ok, replace dog assemblies using replacement kit in catalog.

WEAR

B-73

ElongationofDriveTubeHoles

Cause: • Worn locking dog assembly socket.• Worn drive tube.

Action: • Replace drive tube.• Check locking dog assembly - replace if worn.

DRIVE TUBE


FlangeBolts

Cause • Wrong grade bolts.• Applied torque in excess of rating.• Failure to maintain proper bolt tightening torques.

Action: • Replace with proper size and grade bolts.• Do not exceed tool's torque rating.• Keep bolts tightened to recommened torque.

B-74

Cause • Torque in excess of rating.• Inadequate engagement of anchor in tube.

Action: • Replace drive tube.• Do not exceed tube's torque rating.• Maintain full engagement with anchor at all times.

SplitorBrokenDrive End

DRIVE TUBE

Twist

Cause: • Torque in excess of rating.Action: • Replace drive tube.

• Do not exceed tube's torque rating.

Cause • Extremely worn locking dog adapter.• Insufficient engagement of tube in locking dog adapter.

Action: • Replace drive tube.• Check locking dog assembly - replace if worn.• Be sure tube is captured in locking dog adapter by dogs before using.

Dog Endof TubeTwisted Off

ANCHORS AND ANCHOR TOOLS - C3 GROUP Ltd · PDF filement point at ground line, ... anchor to a...

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Transcript of ANCHORS AND ANCHOR TOOLS - C3 GROUP Ltd · PDF filement point at ground line, ... anchor to a...