Precast Meadow Burke Manual Inserts in Precast

Innovating PrecastConstruction

MeadowBurke

www.MeadowBurke.com

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Precast Products Manual

3 www.MeadowBurke.com

Table of Contents

Utility Lifting System ..............................................79V-Anchor Lifting System Technical Information ......80

Hook-Lift Lifting System Recess Accessories ........83MB Cable Lift Loop + Plus System..........................84

Coil Lifting Inserts....................................................85Coil Lifting Insert Technical Information ..................86

Coil Lifting Inserts ....................................................87Coil Lifting Insert Accessories ..................................94

Rapid-Lok Connection Plate System ..................101The Primary Assembly Components......................102Rapid-Lok Placement vs. Load Chart ....................105

Rapid-Lok Stud Location with Bearing Point Reference ........................................107Stud Extender ....................................................108

Bracing Hardware ..................................................157Brace Load Table....................................................158Bracing Guidelines ................................................160Bracing Table Legend ............................................161

Meadow Burke Braces ..........................................167Coil Inserts..............................................................171Anchor Bolts ..........................................................173Brace Badger..........................................................178

Product Index ....................................................................................................................................................183

Halfen Anchoring System......................................115Burke Barrier Reflector Connector ........................124

Slotted Inserts ........................................................125

Prestress Products ................................................141Prestress Chucks....................................................142Prestress Jacks ......................................................144

Prestress Strand Hold Downs ................................145Prestress Products ................................................149Prestress Working Parts ........................................151

Meadow Burke NC Threaded Inserts and Accessories ....................................................133

Precast Miscellaneous Products ............................140

Welded Wire Girders for Composite Panels and Slabs ..............................129

Welded Wire Girders for Composite Panels ..........131

Erector Connector Systems ..................................109MB Erector Connector............................................110

MB Expansion Joint ..............................................114

Burke Lift..................................................................13Burke Lift Technical Information ..............................14The Edge Lift Advantage ..........................................15The Face Lift Advantage ..........................................16Rapid Lift System ....................................................17Rapid Lift Technical Information ..............................18Rapid Lift System Anchors ......................................29Double Tee Anchor ..................................................51

Rapid Lift System Ring Clutches ............................52Rapid Lift System Recess Members & Accessories ..55MB DogBone Lifting System ..............................61MB DogBone System Technical Information ........62MB DogBone System Anchors ............................61MB DogBone System Lifting Hardware ................72MB DogBone System Recess Formers ................75MB DogBone System Accessories ......................78

Precast Chemicals ................................................153Concrete Repair Products ......................................154

Form Release Agents ............................................155Epoxy Products ......................................................155

Product Safety Considerations ................................4Product Coatings and Finishes ..................................5

Insert and Concrete Failures ......................................7



Product Safety Considerations

Meadow Burke guarantees the products it manufactures when used by qualified, experienced and properly supervised workmen adhering to the safe-ty factor standards detailed below. Misuse, misapplication or lack of proper supervision and/or inspection can result in serious accidents. If you haveunusual applications or are uncertain about a product application, contact your Meadow Burke Service Center for clarification and carefully field testthe application prior to general use.

When using a Meadow Burke product take time to carefully consider the application, applied loads, required safety factors, safe working loads and allfield conditions to ensure complete safety of all persons involved.

PRODUCT SAFETY FACTORSSafety factors are determined by the degree of risk involved in the use of the product and are established by the American Concrete Institute (ACI),Occupational Safety and Health Administration (OSHA) and American National Standards Institute (ANSI). Safety factors specific to precast concrete con-struction are shown in the following table, other saftey factors may be shown.

All products displayed in this publication have the applicable safety factor used to derive their safe working loads. This does not relieve the user of theresponsibility to carefully calculate and determine the actual loads that will be applied in a specific product application. If the user determines that asafety factor differs from what is printed in this publication is needed, the following equation may be used to raise or lower a safe working load:

Adjusted Safe Work Load = Published Safe Working Load (Published Safety Factor)(New Required Safety Factor)

If there are any doubts, questions or concerns about safe working loads and/or safety factors, contact yourMeadow Burke Service Center.

WELDING CONSIDERATIONSMeadow Burke cannot control field conditions or field workmanship; therefore it cannot guarantee any Meadow Burke product that has been altered inany way after it has left the manufacturing facility. This includes welding, bending, filing, etc. Never weld to a casting unless authorized by a qualifiedengineer. Welding to a casting can cause localized embrittlement that greatly reduces the load-carrying capacity of the casting. Tack welding to wireproducts can have the same effect.

WORN WORKING PARTSAll construction-related working parts are subject to wear, misuse, overloading, corrosion, alteration, etc. which may affect the performance of the prod-uct. Therefore, all working parts must be regularly inspected to determine if the product can remain in service. The frequency of inspection is based onhow often the product is used, period of use and the environment in which it is used.

PRODUCT DESIGN AND SAFE WORKING LOAD CHANGESAs a manufacturer of quality concrete accessories, Meadow Burke reserves the right to change product designs and/or product safe working load rat-ings at any time without prior notice to prospective users. Any such changes will only be made to improve the product or to increase product safety.

5 to 14 to 13 to 11.5 to 1

Reusable Hardware for lifting and handlingInserts/Anchors for lifting and handling

Permanent connectionsHold Downs for prestressing strands

Safety Factor Product Intended Use



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Product and Coating Finishes

Products manufactured by Meadow Burke can be supplied in several different coatings or finishes to meet specific corrosion resistance requirements.Note that if no coating or finish is specified when placing an order, the product will be supplied with the standard plain finish.

AVAILABLE FINISHES AND COATINGS

PLAIN Unprotected steel sometimes referred to as black, basic or raw steel. It will corrode or rust when exposed to the elements.

ELECTRO-PLATE A bright shiny or sometimes dull finish generally 0.0002 to 0.001 inch thick zinc coating. The degree of corrosion protectionwill vary based on the severity of the environment in which it is used. Meadow Burke electro-plated products comply with the ASTM B-633 standard.

HOT DIP GALVANIZE Semi-bright to very dull finish. It is a much heavier coating than electro-plate. Hot dip galvanize (HDG) provides a higherdegree of corrosion resistance than electro-plate, but is not suitable for threaded or tight-fitting products. Meadow Burke hot dip galvanized protectedproducts comply with ASTM A-123 or ASTM A-153.

ASTM A-123 Used for products that are fabricated from rolled, pressed, punched and forged steel shapes, plate, bar, wire or strips 0.125 inch thick and heavier. Zinc finish thickness will vary from 0.002 to 0.005 inch thick.

ASTM A-153 A coating process for iron and steel products that utilizes a spinning technique to remove excess zinc. Bolts may be processed under this ASTM specification. Coating will vary in thickness from 0.002 to 0.006 inch depending on the class specified by the user.

WARNING: Products manufactured from high carbon steel that is electro-plated or hot dip galvanized must be properlyheat treated to minimize embrittlement. Failure to properly heat-treat these products may cause a compromise of theirsafe working loads and result in a premature failure of the product.

WireWireWire

Steel or PlateSteel or PlateSteel or Plate

0.142 to 0.186 dia.0.187 to 0.249 dia.0.250 dia. or larger

0.030 to 0.062 thick0.063 to 0.124 thick

0.125 or thicker

0.002 inch0.003 inch0.004 inch0.002 inch0.003 inch0.004 inch

Product Type Product Thickness Coating Thickness

Castings3/16 and over thickness and over 15" Length

Under 3/16 thickness and over 15" LengthAny thickness and 15" and under Length

AB1B2B3

0.0034 inch0.0034 inch0.0026 inch0.0022 inch

Product Type Class of Protection Coating Thickness

SC-4SC-3SC-2SC-1

Very SevereSevere

ModerateMild

0.0010 inch0.0005 inch0.0003 inch0.0002 inch

Service Condition Exposure Coating ThicknessASTM B-633 ELECTRO-PLATE COATING OF ZINC ON STEEL

ASTM A-123 HOT DIP GALVANIZE ON IRON AND STEEL

ASTM A-153 HOT DIP GALVANIZE ON IRON AND STEEL HARDWARE



Product Coatings and Finishes (cont.)

EPOXY COATING A shiny epoxy coating applied to a finished product utilizing an electrostatic or fluidized bed. The coating thickness will vary from 0.005 to 0.012 inch. Epoxy coating is a very effective protection from hostile environments such as around or over salt water and chemicallycontaminated areas.

STAINLESS STEEL Stainless steel offers high corrosion resistance in any environment. Type 304 stainless steel is generally used (unless otherwise specified) by Meadow Burke. It is non-magnetic and can be painted with no special preparation.

CAUTION: Corrosion may occur on exposed metal products when architectural precast members are etched or acid washed. The amountof corrosion will be dependent on the acidity of the wash and/or the type of chemicals used.

Embrittlement Information

Carbon steels, cold-worked steels and heat treated steels are susceptible to embrittlement in both electro-plating and hot dip galvanizing operations.

A) Any severely cold-worked steel must be stress-relieved from strain aging by baking prior to electro-plating or hot dip galvanizing.

B) Any steel with significant high strength or high carbon content is susceptible to hydrogen embrittlement during electro-plating or hot dip galvanizing. It must be baked after the coating is applied to drive out excessive hydrogen.

WARNING: Products manufactured from high carbon steel that is electro-plated or hot dip galvanized must be properly heat treated to mini-mize embrittlement. Failure to properly heat treat these products may cause a compromise of their safe working loads and result in a prematurefailure of the product.

Applicable ASTM documents:ASTM A-143 Safe Guarding Against EmbrittlementASTM A-153 Zinc Coating (hot dip) on Iron and Steel HardwareASTM A-165 Electro-Deposited Coatings of Cadmium on SteelASTM B-633 Electro-Deposited Coatings of Zinc

Example Coating Specifications:Electro-Plate Electro-Plate to ASTM B-633 Specification. Service Condition SC-4. Provide embrittlement relief, if necessary.Hot Dip Galvanize Hot Dip Galvanize to ASTM A-153, Class A. Provide embrittlement relief, if necessary.


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Safety and Technical

Failure of an insert/anchor or the concrete can occur in a variety of ways; such as concrete shear cone failure, insert mechanical failure, coil penetration failure and edge lifting failures.

CONCRETE SHEAR CONE FAILUREThe concrete shear cone is the area of concrete around the insert/anchor that fails due to the concretes inability to contain the stresses of the appliedload. The approximation of break strength in uncracked concrete assuming a full shear cone is given by the following formula for a single anchor:

Ncb = ed,Nc,Ncp,NNb (D-4)

Where

ANco = 9hef2 (D-6)

Nb = kc fc hef1.5 (D-7)

Nb = 16 fc hef5/3 (D-8)

c,N = 1.25 for cast-in anchors

cp,N = 1.0 (D-12)

ed,N = 0.7+0.3 (D-11)

kc = 24

= 1.0 for Normal Weight Concrete, 150 pcf

hef = effective depth of the anchor, use equation D-7 for anchors less than 11" and equation D-8 for anchors greater than or equal to 11"

The equation above is the ultimate pullout strength of an anchor in tension in uncracked concrete as given by ACI 318-08 Appendix D. Meadow Burkedoes not recommend the use of LRFD design methodology when designing anchors for lifting and forming.

LRFD design methodology is intended for in-service conditions only and not for temporary conditions such as lifting, forming and bracing. The end-userof the product will under design the lifting system using this method while over design a forming system. It is recommended that the above pulloutstrength be reduced by the desired safety factor as recommended by page 2 of this catalog.

CONDITIONS AFFECTING SHEAR CONE CAPACITIES:1. A shear cone is assumed to radiate a 35 cone. Field experience indicates that the cone may actually radiate as much as a 20 cone, which

would increase the required corner distance to 2*Length of insert.2. Sustained vibrations will reduce Ncb by thirty percent (30%).3. Ncb decreases with decreasing unit weight of the concrete. For light weight concrete, 120 psf or less, = 0.70.4. For cracked concrete conditions, reduce Ncb by 20%.

ANcANco

ca, min1.5hef

'

'

1.5hef

Plan

1.5hef

1.5hef

1.5hef

ANc

ANc = (2 x 1.5hef ) x (2 x 1.5hef ) = 9h2efFigure RD.5.2.1



Insert and Concrete Failures (cont.)

Wire displayed above and all wire used by Meadow Burke in the fabrication of inserts comply with

ASTM-1064 standards, with a minimum yield strength from 70 ksi.

MINIMUM COIL BOLT PENETRATION FAILURESThe most common type of insert failure is caused by the lack of sufficient bolt penetra-tion through the coil of the insert. Under applied load, inadequate bolt penetration of theinsert coil will cause the upper part of the coil to unwind and pull out of the insert. Thisis commonly referred to as the corkscrew effect.

inches0.4440.4400.3750.3400.3060.3060.2830.2620.2230.218

mm11.111.19.58.67.87.87.26.65.75.5

MHCLCLC

MHCLCLCLCLC

MHCLC

C1035C1008C1018C1035C1018C1008C1012C1008C1035C1008

lbs.106501065077406360515051504410378027402620

kN47473428232320171212

lbs.160001350096009000740067505400435046003000

kN71604340331924182012

lbs.10670900064006000493045003600277030701870

kN4740282622201612138

NominalDiameter Wire Grade

AISI & SAENumber

Approx. Min.Yield Tension

Approx. Min.Ult. Tension

Approx. Min.Shear

TYPICAL WIRE SIZES AND STRENGTHS

Minimum CoilPenetration

SetbackTypically 1/2"

INSERT/ANCHOR MECHANICAL FAILURESInsert and anchor safe working loads (SWL) displayed in this publication are based on the mechanical properties of the product. Generally, it is thecapacity of the insert wire or anchor body that determines the mechanical capacity.

The user of Meadow Burke products must always check to ensure that enough concrete cover is available to provide a full shear cone and compare the mechanical strength of the insert/anchor to the available concrete shear cone. The lesser of the two values will determine the safeworking load of that specific application.


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LIFTING HARDWARE CONSIDERATIONSAll lifting hardware is subject to wear, abuse, bending, overloading, alterations and corrosion. The user of these products must continually inspect theproduct to determine its usable condition. If the product shows any of the problems noted above or is not in good working condition, the product shouldbe discarded or returned to Meadow Burke for repair and/or service. Based on how often the product is used, period of use and the environment inwhich it is used must determine the frequency of inspections.

COIL BOLT CONSIDERATIONS1. Failure to properly tighten a coil bolt can result in the inability of the coil bolt to fully penetrate the coil of the insert.2. Excessive insert setback in the concrete can result in the inability of the coil bolt to fully penetrate the coil of the insert.3. Worn threads on a coil bolt will render the bolt ineffective and will result in inadequate thread engagement. 4. A coil bolt of inadequate length to fully penetrate the insert coil will produce a corkscrew type of failure. The insert coil cannot carry the required

load when only partially engaged.5. Reference the Minimum Coil Penetration Table on page 90.

IMPORTANT: In precast concrete plant operations, coil bolts should be periodically inspected and replaced if signs of wear or bending are present.Worn or bent bolts should be immediately discarded. Never use a worn or bent bolt for any purpose and never attempt to straighten a bent bolt.

EDGE LIFTING FAILURESWhen an insert/anchor is located in the edge of a concrete panel for the purpose of lifting and handling of the panel, the concrete on the topside of the insert/anchor will carry the entire applied load unless special provisions are implemented. The upward force on an insert, from the bolt and compressive force from the lifting plate, combine to quickly overload the concrete on the topside of the insert/anchor. The loss of the concrete abovethe insert/anchor can result in the insert breaking and loss of the panel.

One means of increasing edge lift capacity is to strengthen the concrete over the insert with shear bars or stirrup assemblies. This process will reinforce the concrete, preventing total loss of the concrete and allow the insert/anchor to remain in the panel. Always use the proper style and capacity insert/anchor for edge lifting. Never use a two-strut insert. A properly selected insert/anchor will not break if the concrete above it fails. This will allow the panel to be positioned with only minor patching required.




LIFTING PLATESWhen using lifting plates in conjunction with cast-in-place inserts, a combination of forces with small lever arms become factors with which to be concerned. Reference the sketches shown below. Dimension d is an assumed constant subject to the location of R, the resultant force exerted bythe reaction of the plate on the concrete.

Lifting Plates Considerations:1. If the lifting plate is loosely tightened, the location of R will be at the extreme edge/corner of the plate and d becomes plate width

divided by 2.2. If the lifting plate is properly tightened down with the attachment bolt, the generally accepted stress pattern on the plate will be triangular or

trapezoidal.3. During initial and low loads the R force moves from the toe of the plate towards the center of the plate. As the load increases, the plate

attempts to flex. The maximum movement is most likely to the midpoint of the plate, between the bolt centerline and the toe of the plate. Taking a conservative approach, d divided by 2 is the theoretical location of the R force, thus resulting in a higher load to be added to the vertical component load.

4. Using basic equations, a pair of force couples must be equal to zero:H(e) = V(d/2) and V = (2e/d)HV = vertical force on the insert. H = horizontal force on the lifting plate.

SWIVEL PLATEAPPLICATION

LIFT PLATEAPPLICATION

LP-11LP-20 LP-22

LP-44

SHEARFORCE

SHEARFORCE

e

RR

d

d/2

d

d/2

e

H

VV

TP

H

TP

Bolt Diameter 2ed

VALUES FOR (2e/d)

( )

Example: If Meadow Burke Lift Plate Swivel (LP11), 1 diameter lifting plate is pulled at an angle producing 3000 lbs. vertical load and 3000 lbs. horizontal load, then applying the aboveinformation:

V = H = 0.8 (3000) = 2400 lbs. additional load on the insert due to the horizontal force component.

Total Applied Load =

( )2ed

Type ofLifting Plate

LP-11LP-11LP-20LP-20LP-20LP-22LP-22LP-44LP-44LP-44

in.3/411

1-1/41-1/23/411

1-1/41-1/2

mm.19252531381925253138

.80

.801.0.85.853.253.252.362.362.36

Bolt Diameter 2ed

VALUES FOR (2e/d)

( )

LA = Vertical component load + HLA = 3000 + 2400

= 5400 lbs. Total Tension Load

Must use an insert with a SWL greater than 5400 lbs.

( )2ed


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Lifting plate example calculation: Values for (2e/d) H-Reference Table on page 8.If a 1 diameter Meadow Burke Swivel Lift Plate (6440) is pulled at an angle producing 3,000 lbs. vertical load and 3,000 lbs. horizontal load, then theapplication of the information on the previous page would be as such:

V = (2e/d)H = 0.80 x 3,000 = 2,400 lbs. additional load on the insert due to the horizontal force component.Total applied load = LALA = vertical component load + (2e/d)HLA = 3,000 + 2,400 lbs.LA = 5,400 lbs. total tension load.In this example, an insert with a safe working load greater than 5,400 lbs. must be used.

INCLINED SLINGSWhen rigging is selected where the sling lines are inclined, it is important to measure the incline angle (alpha). The angle will cause an increase inthe anchor loading due to the horizontal force components.

Reference the sketched examples:1. The incline angle is 90 and from the table below, the load factor is 1.0.

Therefore, F1 load = 1.0 x weight of the concrete element divided by 2.2. The incline angle is 45 and from the table below, the load factor is 1.42.

Therefore, F1 load = 1.42 x weight of the concrete element divided by 2.3. The incline angle is 60 and from the table below, the load factor is 1.16.

Therefore, F1 load = 1.16 x weight of the concrete element divided by 2.

Sling Angle Load Factor

901.00

751.04

601.16

451.42

302.00

SLING ANGLE LOAD FACTORS

#1 - 90 Sling Angle

= 90

F1 F2 F2

W

F1 F2

W

F1

= 45 = 60

#2 - 45 Sling Angle #3 - 60 Sling Angle




Example Dual Inclined Slings Calculations:Determine the anchor load, anchor size and concrete psi required for a rectangular concrete beam 10 deep, 30 wide and 24 long. The beam has formadhesion at the bottom surface only and a sling incline angle of 45.

Concrete dead weight = 10/12 x 30/12 x 24 x 150 lbs. = 7,500 lbs.Form adhesion = 10/12 x 24 x 25 lbs. = 500 lbs.Combined load (CL) = 8,000 lbs.

Now apply the load factor for the 45 inclined sling angle and realizing that F1 = F2 = CL/2 then; F1 = 8,000/2 x 1.42 = 5,680 lbs. per anchor.

To adequately lift and handle, the example beam would require an anchor like the 4-ton x 5-1/2 long DogBone Anchor rated at 6,000 lbs. safe working load in 2,500 psi concrete.

Example Four Inclined Slings Attached at Slab Corners Calculations:When four fixed length slings are used to lift and handle a concrete element, often one of the slings will be longer than the rest. This will force two ofthe embedded anchors to carry the total load and the other two anchors to do little more than keep the slab balanced.

Determine the anchor load, anchor size and concrete psi required for a slab 12 x 10 x 16 using a sling incline angle of 60 and having form adhesion at the bottom surface only.

Concrete dead weight = 12 x 10 x 16/12 x 150 = 24,000 lbs.Form adhesion (concrete form) = 12 x 10 x 20 lbs. = 2,400 lbs.Combined load (CL) = 26,400 lbs.F1 = 26,400/2 (only two anchors working) x 1.16 per anchor = 15,312 lbs. per anchor

To adequately lift and handle, the example slab would require an anchor like the 8-ton x 13-3/8 long DogBone Anchor rated at 16,000 lbs. safe work-ing load in 1,500 psi concrete.

DUAL INCLINEDSLINGS EXAMPLE

FOUR INCLINEDSLINGS EXAMPLE

F2

24-010

F1

4560

LooseLoose

Tight

Tight

30


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Burke Lift

After more than three years ofdevelopment and testing byBurke Engineering, the Burke Liftsystem is changing face andedge lifting. This unique overalldesign may just be the mostinnovative lifting product in morethan 30 years.



One Ring Clutch, One Void Former, One Anchor

After more than three years of development and testing by Burke Engineering, the Burke Lift system is changing face and edge lifting. This unique overall design may just be the most innovative lifting product in more than 30 years.

The cutting edge system greatly simplifies engineering, inventory requirements, lifting, and it completely eliminates clutch changeover and thespalling of surrounding concrete.

The Lifting Innovation

One ring clutch One void former for all anchors One edge lift erection anchor One style of face lift anchor, available in eight heights

Among the Burke Lifts features is a one-clutch system, which allows for the elimination of switching between 4/5-ton and 8/10-ton clutches. Thepatent pending clutch design forces the clutch to bear into the Burke Lift Anchor rather than the concrete. It is equipped with one style face lift anchorin eight heights for panel thickness from 5" to 12" allowing for a shear safe working load in thinner panels. Burke Lift functions in thin panels of 5"for face lift anchors as well as edge lift anchors.

The Burke Lift Advantage

Burke Lift simplifies traditional 4, 5, 8 and 10-ton applications. It also provides greater capacity than the 6-ton forged anchor The system is designed for face and edge lifts, and maintains a 10-ton mechanical strength in ALL applications The one clutch system eliminates the need to switch between 4/5 ton and 8/10 clutches The Burke Lift clutch bears into the anchor rather than the concrete on edge lifting Face lift anchors accommodate panel thickness of 5 to 12 allowing for a shear safe working load in thinner panels Eliminates the need for additional anchor reinforcement Manufactured to Burke quality standards. Each clutch is traceable by serial number, and each anchor is traceable by batch code.

EDGE LIFT ANCHORSBURKE LIFT VS RAPID LIFT

Anchor Description

Wall Thickness

Allowable Shear 2.66:1 S.F.

Allowable Shear 4:1 S.F.

Allowable Edge Tension 4:1 S.F.

Minimum Corner Distance

Minimum Spacing

10-TonEdge Lift Anchor

5"

4,400 lbs

2,930 lbs

6,810 lbs

12"

44"

4-TonTech Erec w/SP

5"

4,000 lbs

2,660 lbs

4,730 lbs*

12"

24"


6"

4,690 lbs

3,120 lbs

9,490 lbs

22"

44"

4-TonTech Erec w/SP

6"

4,290 lbs

2,860 lbs

5,170 lbs*

12"

24"


8"

6,720 lbs

4,470 lbs

14,820 lbs

22"

44"

8-TonTech Erec w/SP

8"

6,030 lbs

4,010 lbs

7,690 lbs*

18"

36"

Burke Lift Rapid Lift Burke Lift Burke LiftRapid Lift Rapid Lift

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.* Loads shown are without tension bar.

Our patented clutch

redirects the shear

force distribution

opposite of existing

lifting systems.


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Shear Bar Required

Erection HeadTwo Hole

4-, 8-ton

Tech ErectionAnchors4-, 8-ton

RAPID LIFT EDGE-LIFT ANCHORS

Tension Only Tension and Shear

Tech Anchors4-ton

Tech ErectionAnchor w/

Shear Plate4-, 8-ton

Erection Anchor w/

Shear Plate4-, 8-ton

SpreadAnchors4-, 8-ton

Forged Anchor6-ton

Forged Anchor6-ton

Forged Anchor6-ton

Erection Anchors4-, 8-ton

THE EDGE LIFT ADVANTAGE

One Edge Lift Anchorfor Panels 5" + Thickness

The Burke Lift System Eliminates the Anchors Below

22.25"

With Intergral Shear

Plate

Made in the U.S.A.with American Steel



Made in the U.S.A.with American Steel

One Anchor, Eight Heights

THE FACE LIFT ADVANTAGE

5"

6"

7"

8"

9"

10"

11"

12"

4"

5"

6"

7"

8"

9"

10"

11"

3.89"

4.45"

5.01"

5.57"

6.13"

6.69"

7.25"

7.81"

0.75"

0.75"

0.75"

0.75"

0.75"

0.75"

0.75"

0.75"

Panel Thickness Anchor Height (A)

4,600

6,000

8,000

9,250

11,250

13,200

14,500

16,000

Burke Lift Face LiftAllowable Tension Load4:1 Safety Factor (lbs)

2,670 5,500

3,590 8,000

6,350

10,000

N/A

N/A

N/A

12,000

Rapid Lift Face LiftAllowable Tension Load4:1 Safety Factor (lbs)

Overall Width (B) Material Thickness (C)

C

A

B

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.


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Rapid Lift System

The Meadow Burke Rapid LiftSystem has proven itself to be asafe, trouble-free, quality precastlifting and handling system. Itoffers many advantages, such asa broad selection of anchors,easy installation and outstandingmaneuverability to handle anyprecast application.



Rapid Lift Technical Information

INSPECTION/MAINTENANCE REQUIREMENTS

NEW RING CLUTCH INVENTORY Generally inspect for overall appearance. Make sure there are no bent parts, welds or sign of excessive heat-ing on any parts. Make sure ring clutches have stop pins and bushings. Make sure the ring clutch handle does not come out of the casting when rotated tothe open position. Make sure product date stamps are 1978 or newer.

INVENTORY RETURNED FROM JOB SITE OR OTHER SOURCES Generally inspect for overall appearance. Make sure there are no bentparts, welds or sign of excessive heating on any parts. A clutch handle that is slightly bent (15 or less) can be straightened cold. Make sure ring clutcheshave stop pins and bushings. Make sure the ring clutch handles do not come out of the casting when rotated to the open position. Make sure the lifting bailis not bent. Check lanyard for fraying. Make sure product date stamps are 1978 or newer.

ADDITIONAL INSPECTIONS FOR CABLE BAIL CLUTCHES Check the wire rope for bends, kinks, loosing of outer layers in the free length,squeezing in the free length, squeezing in the support area, tuberculation, damage or wear of the rope or end connectors and excessive wire ruptures (4ruptures in 3 diameters of the rope, 6 in 6 diameters, 16 in 30 diameters, etc).

WHEN TO SCRAP RING CLUTCH/HANDLE If the bail is bent more than 10 or shows evidence of having been straightened more than once,scrap the unit. If a weld cannot be repaired, the unit should be scrapped. If the clutch itself is bent, the clutch must be destroyed. Scrap the handle if it isbent more than 15.

CABLE BAIL CLUTCHES If the wire rope is compromised according to the inspection criteria listed above, it must be replaced. The replacement wirerope shall be of a similar or larger size as the original. It should be replaced, spliced, tested and certified for load equal to 4 times the rated load stampedon the clutch casting by a company specializing in wire rope replacement.

INSTALLING AND REMOVING RECESSING MEMBERS

PLASTIC RECESSING MEMBERSASSEMBLY - To assemble the anchor and the RecessingMember, insert two rods or screwdrivers into the inside holes ofthe recessing member and scissor the rods to open the recessmember to permit insertion of the anchor.

RL-45


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Rapid Lift Technical Information (cont.)

Nailing to formwork Position the anchor/recessing member assembly in its assigned location and nail it to the formwork. The outside holes in therecessing member can be utilized for this purpose or a Holding Plate can be nailed to the formwork to support the assembly.

Holding Plate attachment The anchor/recessing member assembly may be attached in four different methods using the Holding Plate: nailed,as noted above, bolted, welded or taped.

Bolting the unit to the formwork requires a properly placed hole to be drilled in the formwork. A L-Rod or bolt/wing nut assembly is inserted through the drilled hole to securely attach the anchor/recess assembly to the form.

On a multi-use metal form, the Holding Plate can be tack welded in its proper position to hold the anchor/recessing member.

Taping the holding plate can be accomplished using a good quality, commercial grade double back tape.

Stripping To strip a plastic recessing member, insert two rods or screwdrivers into the two innermost holes of the recessing member. A scissoringmotion of the rods will lift one side of the recessing member and it can then be extracted from the concrete.




METAL RECESSING MEMBERS

ASSEMBLY To assemble the anchor and metal recessing member, first fold the foam strip over the head of the anchor and then press the foam-covered head of the anchor into the recessing member slot. Insert the tapered end of the steel wedge into the top of the recessing member and throughthe eye of the anchor and wedge tightly.

METAL RECESSING MEMBER PLACEMENT A wing nut assembly can be effectively used to secure the metal recessing member/anchorassembly to the form. Drill a properly placed hole in the form and thread the bolt assembly through the hole. Screw the bolt in the center hole of therecessing member until it is tight against the head of the anchor. Secure the assembly against the form by turning the loose-running wing nut. Nailingthe recessing member, using the holes provided on both ends of the unit, will prevent the assembly from turning during concrete placement. In appli-cations using multi-use metal forms, the metal recessing member can be tack welded to the form. When constructing a multi-use metal form, it isimportant that an access hole is placed for the insertion/removal of the steel wedge (for easy placement of wedge steel recess member, the multi usemust be cut out to accept the bolt).

Complete Assembly

RL-57

RL-55

RL-59

RL-58

STRIPPING Unscrew the bolt and strip the form to expose the recessing member. Tap the small end of the tapered wedge with a hammer to loosenthe wedge so it can be withdrawn by hand. Now screw the setting bolt into the recessing member and continue screwing, using the fixed wing nut,until the recessing member is loosened from the anchor and can be removed.

RING CLUTCH INSTALLATION

ANCHOR ATTACHMENT Make sure that the curved bolt handle is in the open position. Position the ring clutch above, and centered over thehead of the anchor. Drop the ring clutch down into the void formed by the recessing member. Rotate the curved bolt through the anchor engagementhole into its closed position. Installation is complete, ready to lift.


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Clutch BoltClutch Bail

(B)(A)




CORRECT

BAIL POSITIONING Make sure that the bail does not get into a locked position under the ring clutch, as shown in the sketch. In this situa-tion, the bail and/or ring clutch might bend under load and as the precast unit nears vertical, the bail can unlock itself and cause a severe impact load.Always position the lifting cable directly over the ring clutch to avoid alignment problems.

Wrong - The Clutch, if positioned below the ring clutch, as shown, maylock itself in a position preventing free movement of the unit. In thisposition the ball might bend during lift. As the panel is lifted the Clutchmay bend. As the panel reaches a more vertical position, the Clutch willunlock itself resulting in an impact load.

Correct - By not having the lift line directly over the Ring Clutchand a load is applied in a direction towards the bottom of the panel,the Clutch may bend over the panel edge.

Direction of lift

May bend at this point or spallpanel

Bending Manual Ring Clutchover panel edge

Proper Direction oflift

Yes

Yes

No

No

Direction of lift

WRONG

Improper Directionof lift

Manual RingClutch Bail

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SLING ANGLE FACTORAdditional forces come to bear on an anchor from oblique pulls caused by the sling angle. Sling angles at less than 90 from perpendicular, increasethe load on the anchor. Angles less than 30 are not safe and must not be used. To calculate the load on the anchor, refer to the accompanying table.Move across the table to the sling angle being used and multiply the corresponding magnification factor by the dead load of the precast element.

ADJUSTING FOR CONCRETE STRENGTHNote: These factors are for use with tension applications only. Do not use these factors for shear applications without consulting with the Meadow BurkeService Center to make sure there are no other limitations.

To convert the allowable tension load for an unreinforced anchor from listed concrete strength of 3,500 psi to a greater or lesser concrete strength, mul-tiply 3,500 psi by the factor indicated below. Note: To maintain the needed 4:1 safety factor the new value must be less than 25% of the listed ultimatemechanical value of the selected anchor.

Sling AngleLoad Factor

901.00

751.04

601.16

451.42

302.00

SLING ANGLE LOAD FACTORS

CONVERT FROM3,500 PSI TO 4,000 PSI3,500 PSI TO 4,500 PSI3,500 PSI TO 5,000 PSI

MULTIPLY BY1.071.131.19

CONVERT FROM3,500 PSI TO 3,000 PSI3,500 PSI TO 2,500 PSI3,500 PSI TO 2,000 PSI

MULTIPLY BY0.920.840.75

CONCRETE STRENGTH ADJUSTMENT FACTORSTo Increase For Greater Concrete Strength

To Decrease For Lesser Concrete Strength




SHEAR CONE CONDITIONSCondition 1: Full Shear Cone Condition This applies to anchors located ina concrete panel at a distance of at least (3hef + A)/2 (full shear cone width) from theedges. Determine the A (width) and B (length) dimensions of your anchor using theAnchor Embedment Data Table on page 20. Then go to the Table of ANc Values onpage 20. Move across the top row (Anchor Width A) to your anchors width dimension.Drop down to the next row (Anchor Depth hef) and find the length dimension of your anchor. Drop down one more row (ANc0 Values) and the value under your hefdimension is the ANco value for your anchor.

Plug the ANO, ANco value and concrete strength into the appropriate formula onpage 5 to determine anchors ultimate pullout strength. Divide the pullout strength byfour (4) to obtain the required 4:1 safety factor.

Condition 2: Partial Shear Cone This applies to anchors located in a concretepanel at a distance of less than (3hef + A)/2 from the edges, as shown in condition 2to the left. Determine the A (width), hef (length) and T (panel thickness) dimensions.Then go to the Table of ANc Values on page 20. Move across the top row (AnchorWidth A) to your anchors width dimension. Drop down to the next row (Anchor Depthhef) and find the length dimension of your anchor. Drop down the column of ANcValues to the value opposite your T dimension. This is the ANc value for your anchor.

Plug theANO, ANCO value and the concrete strength into the appropriate formula onpage 5 to determine anchors ultimate pullout strength. Divide the pullout strength byfour (4) to obtain the required 4:1 safety factor.

Condition 3: Partial Shear Cone This applies to anchors located in a concretepanel at a distance of more than (3hef + A)/2 from one edge, but at a lesser amountfrom another edge. Determine the A (width), hef (length) and T/2 dimensions from theanchor to the closest edge. Then go to the Table of ANc Values on page 20. Moveacross the top row (Anchor Width A) to your anchors width dimension. Drop down tothe next row (Anchor Depth hef) and find the length dimension of your anchor. Dropdown the column of ANc Values to the value opposite your T dimension. Read thevalue listed under the appropriate T column and the ANco value under the 3hef +A column. Add the two together and multiply by 0.5.

Plug the ANc, ANco value and the concrete strength into the appropriate formula onpage 5 to determine anchors ultimate pullout strength. Divide the pullout strength byfour (4) to obtain the required 4:1 safety factor.

Ca,min

AN

AN

3hef+ A

3hef + A2

3hef+ A

AN


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EMBEDDED ANCHOR STRENGTH CALCULATIONS The embedded strength of many of the Rapid Lift anchors can be calculated using the tables and formulas on the following pages. Note that the PlateAnchor and Flat Foot Anchor will not obtain full ultimate mechanical strength if the recommended additional reinforcement is not used. Also note that itis not necessary to apply these formulas and tables to Two-Hole Anchors, Erection Anchors or Tech Erection Anchors utilizing extra reinforcement. Theseanchor applications will achieve ultimate capacity at 1,500 psi.

The following tabular data and formulas are based on industry accepted Precast Concrete Institute (PCI) calculations for pullout strength of embeddedanchors. Some modification to the formulas has been done to more closely agree with actual testing of Rapid Lift anchors.

*Available on special order or limited quantities on hand.

Ring ClutchSystem Clutch I.D.

Anchor ItemNumber

Anchor "A"Dimension

Anchor "B"Dimension

3hef + A

1-Ton2-Ton2-Ton4-Ton4-Ton4-Ton4-Ton4-Ton8-Ton8-Ton

22-Ton22-Ton

1-Ton2-Ton4-Ton8-Ton8-Ton

2-Ton4-Ton8-Ton

2-Ton2-Ton2-Ton2-Ton

2-Ton4-Ton8-Ton

1.25T2.5T2.5T

5T5T5T5T5T

10T10T22T22T

1.25T2.5T

5T10T10T

2.5T5T

10T

2.5T2.5T2.5T2.5T

2.5T5T

10T

7905079110790597911379114791157911679117793197911979172*79174*

7904679047790487934979049

795277954879589

79052790537905879400

791287904479042

1 1/4"1 1/4"1 1/4"1 1/2"1 1/2"1 1/2"1 1/2"1 1/2"2 1/2"2 1/2"3 1/8"3 1/8"

1 3/16"2"2 1/2"3 3/4"3 3/4"

2"2 1/2"3 3/4"

1 1/4"1 1/4"1 1/4"1 1/4"

1 1/4"1 1/2"2 1/2"

4 3/4"4"5 1/2"4"4 3/4"6 3/4"6 1/4"9 1/2"11"11"15"18 7/8"

4 3/4"8"10 1/2"12 13/16"12 13/16"

8"10 1/2"12 13/16"

2 3/4"3 3/8"2 3/4"3 3/8"

2 1/4"4 3/8"7 1/8"

16"14"18"14"16"21"22"30"36"36"48"60"

16"26"34"43"43"

26"34"43"

10"12"10"12"

8"15"24"

SPREAD ANCHOR

ERECTION ANCHOR

TECH ERECTION ANCHOR

FLAT FOOT ANCHOR

PLATE ANCHOR

TABLE DATA CALCULATION INFORMATION



AN

cTA

BLE

(in2

)AN

CHOR

WID

TH2T

4T6T

6T/8

T22

T

ANCH

OR W

IDTH

A (i

n)1-

1/4

21-

1/2

2-1/

23-

3/4

2-1/

23-

1/8

ANCH

OR D

EPTH

hef

(in)

2-1/

42-

3/4

3-3/

84

4-3/

4 5-

1/2

83

3-1/

24

4-1/

45-

1/4

6-1/

4 6-

3/4

7-1/

49-

1/2

9-

1/2

10

-1/2

12-1

3/16

6-1/

4 7-

1/8

1115

18-7

/8

A Nco

7210

014

118

925

633

368

811

8 15

319

221

331

042

548

955

892

2

9

59

1

146

1714

44

5 56

312

5022

7235

16

Thick

ness

"T"

324

2834

3946

5375

3035

3942

5160

6469

8989

9812

162

7010

514

217

7

3-1/

228

3339

4654

6288

3541

4649

5970

7580

104

104

114

141

7281

122

165

206

432

3845

5362

7110

141

4753

5668

8086

9211

911

913

116

183

9314

018

923

6

4-1/

235

4251

5969

7911

346

5259

6276

8996

103

133

133

147

181

9310

515

721

326

5

539

4756

6677

8812

651

5866

6984

9910

711

414

814

816

320

210

311

617

423

629

4

5-1/

243

5262

7285

9713

856

6472

7693

109

118

126

163

163

179

222

113

128

192

260

324

647

5668

7992

106

151

6170

7983

101

119

128

137

178

178

196

242

124

140

209

284

353

6-1/

251

6173

8510

011

516

366

7685

9011

012

913

914

919

319

321

226

213

415

122

730

738

3

755

6679

9210

812

317

671

8192

9711

813

915

016

020

720

722

828

211

416

324

433

141

2

7-1/

259

7084

9811

513

218

876

8798

104

127

149

160

172

222

222

245

302

155

174

262

354

442

863

7590

105

123

141

201

8193

105

111

135

159

171

183

237

237

261

323

165

186

279

378

471

8-1/

267

8096

112

131

150

214

8699

112

118

143

169

182

194

252

252

277

343

175

198

296

402

500

971

8410

111

813

815

922

691

105

118

125

152

179

192

206

267

267

294

363

186

209

314

425

530

9-1/

289

107

125

146

167

239

9611

012

513

216

018

920

321

728

128

131

038

319

622

133

144

955

9

1094

113

131

154

176

251

101

116

131

139

169

199

214

229

296

296

326

403

206

233

349

473

589

10-1

/298

118

138

161

185

264

106

122

138

146

177

209

224

240

311

311

343

423

217

244

366

496

618

1112

414

416

919

427

611

112

814

415

318

621

923

525

232

632

635

944

322

725

638

452

064

8

11-1

/212

915

117

720

328

911

613

415

116

019

422

924

626

334

134

137

546

423

726

740

154

367

7

1213

515

818

521

230

214

015

816

720

323

925

727

535

635

639

248

424

827

941

956

770

7

1317

120

022

932

715

117

118

021

925

827

829

738

538

542

452

426

830

245

361

476

5

1418

421

524

735

218

419

423

627

829

932

041

541

545

756

428

932

648

866

282

4

1523

126

437

720

825

329

832

134

344

444

448

960

530

934

952

370

988

3

1624

628

240

227

031

834

236

647

447

452

264

533

037

255

875

694

2

1730

042

728

733

836

338

950

450

455

568

535

139

559

380

310

01

1831

745

230

435

838

541

253

353

358

772

637

141

962

885

110

60

1947

737

840

643

556

356

362

076

639

244

266

389

811

19

2050

339

842

845

859

359

365

380

641

346

569

894

511

78

2152

841

744

948

062

262

268

584

743

348

873

299

212

36

2255

347

050

365

265

271

888

751

276

710

4012

95

23

578

526

681

681

750

927

535

802

1087

1354

2460

354

971

171

178

396

855

883

711

3414

13

3088

988

997

912

0910

4614

1817

66

3614

5117

0121

20

4216

9319

8524

73

4822

6828

26

5431

79

1. A

bove

value

s inc

lude

anch

or s

etba

ck in

con

cret

e.2.

Abo

ve va

lues

to b

e us

ed in

con

junct

ion w

ith th

e eq

uatio

ns p

rinte

d on

pag

5, a

nd re

duce

d by

4 fo

r lift

ing.

3. C

a,m

in=

T/2

RL-23

RL-21

RL-24

RL-24

RL-25

RL-25


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GUIDE TO MINIMUM PANEL THICKNESS

Minimum Panel Thickness: The minimum thickness of con-crete that is required to properly install Rapid-Lift Anchors(dimensions vary with anchor selection).

The minimum Panel Thickness is the sum of the followingdimensions: The anchor length (B dimension), the surface toanchor dimension (3/8" for 2 and 4-ton series anchors, and5/8" for the 8-ton series anchors) and the 3/4" minimum ofconcrete cover below the bottom of the anchor.

3/4" concrete cover beneath the feet of all types of spreadanchors is required to obtain listed working loads.

*The RL-25 Tech Anchor and RL-24 Plate Anchor may beplaced directly on the form. These are the ONLY Rapid-LiftAnchors that may be installed in this manner. However, theanchor base plate will be visible and exposed after the pre-cast member is removed from the form. Rust may occur if notgalvanized.


79110791167911979774

5-1/8"7-3/8"

12-3/16"20-1/4"

2-ton4-ton8-ton22-ton

Ring ClutchSystem

Minimum PanelThickness

Anchor Selectionfor Min Panel

Thickness

790583-7/8"2-ton

Ring ClutchSystem



Thickness

791287904479042

3-3/8"5-1/2"8-1/2"

2-ton4-ton8-ton

Ring ClutchSystem



Thickness

791287904479042

2-5/8"4-3/4"6-7/8"

2-ton4-ton8-ton

Ring ClutchSystem



Thickness

7952379544

3-5/8"4-3/8"

2-ton4-ton

Ring ClutchSystem



Thickness

7952379544

2-7/8"3-7/8"

2-ton4-ton

Ring ClutchSystem



Thickness




RAPID LIFT ANCHORS USED IN THIN WALL SECTIONSCare must be taken when locating anchors in thin wall sections. Improper installation and/or misalignment can seriously reduce the safe workingload of the anchor.

Anchors must be positioned on the centerline of the panel. Use supports, spacers or tie the anchor to the rebar mat to make certain of proper positioning.

This sketch shows a misaligned, improperly positioned anchor. Theactual edge distance (Te) is considerably reduced so there must be acorresponding reduction in the safe working load of the anchor.

This sketch shows proper positioning of the anchor on the center-line of the panel. This allows the full wall thickness to be used inthe safe working load selection.

The sketch above shows an anchor application and corner relationship. Safe working loads for indicated corner distances are displayed in the table onpage 34.

Panel C.L. Panel C.L.

TeTe

TeWa

ll Thic

kness

Minimum Corner

Distance

Te = Edge Thickness(1/2 Wall Thickness)

Te


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Rapid Lift System Anchors

RL-2 ONE TON ERECTION ANCHOR 1-Ton Only

The RL-2 One Ton Anchor is specifically designed to lift and handle thin-wall precastconcrete elements, such as architectural panels. The One Ton Anchor is designed to restrict the rotation of the ring clutch to prevent spalling of the concrete during thelifting process. Hot dip galvanize is the only finish available on this anchor.

See the One Ton Ring Clutch on page 53, the One Ton Recessing Member on page 55.

Note: In order to achieve the shear values shown in the table, the use of an optionalshear bar is required.

* The RL-2 One Ton Erection Anchor

The RL-31 Shear Bar (.375 ) provides additionalshear strength to prevent spalling.

The RL-32 Tension Bar provides simple andeconomical reinforcement for the erectionanchor during tension lifts.

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.1) The 2.66:1 safety factor is commonly used for back stripping operations. Unusual live loads or cable magnification may require a higher safety factor to be applied. To obtain the

working loads shown, the shear bar shown above must be used.2) Given full embedment, reinforcement and 3,500 psi concrete, the One Ton Erection Anchor will achieve pullout strength equal to its ultimate mechanical strength.3) The 8 unit is available on special order or limited supply on hand. It may be ordered galvanized or plain.

NominalAnchor Load

1T1T

Clutch I.D.

1.25T1.25T

Item Number

79046G79045G

B(in.)

4 3/48

Shear 4:1Safety Factor

(lbs)

611611

MinimumPanel

Thickness(in.)

33

Shear2.66:1

Safety Factor(lbs)

920920

Tensionw/o Tension Bar4:1Safety Factor

(lbs)

11601600

Tensionw/ Tension Bar

4:1Safety Factor(lbs)

20002000

MinimumCorner Distance

(in.)

1212

WeightPer Piece

(lbs)

.36

.57

Item #Tension Bar Size

Concrete Strength

1,500-3,000psi

79169.306 Dia.

LDim.

2- 4

RL-2 RAPID LIFT ONE TON ANCHOR DATA

RL-32

To order, specify: quantity, name, item number and finish.

RL-32

RL-2

B

1-3/4"

3/4"

3-1/16"

1-3/16"

1-7/8"

7/8"

1/4"

L

30




RL-3 TECH ERECTION ANCHOR2-Ton, 4-Ton and 8-Ton

The RL-3 Rapid Lift Tech Erection Anchor is designed for safe edge lifting and rotation of thin-wall precast elements. The anchor is designed with two ears on the head of the anchor to restrictthe rotation of the ring clutch. As a result, lateral forces are transmitted directly to the anchorinstead of to the concrete to prevent spalling.

Due to the stress caused by the shear lift on the concrete; it is necessary to add reinforcementin the direction of the lift. The RL-31 Rapid Lift Shear Bar is designed for this purpose and isavailable. See sketch below. See additional Shear Bar information on page 38.

Anchor dimensions are shown in the table below. Safe working loads and other pertinent infor-mation is displayed in the table on the next page. The RL-3 Tech Erection Anchor is available inplain or hot dip galvanize finish.

See Ring Clutches on page 46, 47, and 48, the Recessing Members on 49, 50 and 53, and theTension Bars on page 38.

The RL-31 Shear Bar (.375 ) provides additionalshear strength to prevent spalling.

The RL-32 Tension Bar provides simple and eco-nomical reinforcement for the erection anchorduring tension lifts.

RingClutchSystem

2T/2.5T4T/5T8T/10T

2.5T5T10T

795277954879589

2"2 1/2"3 3/4"

8"9 1/2"12 1/2"

3/8"5/8"3/4"

1 13/16"2 1/2"3 1/8"

2 1/4"3 3/16"

4"

1 3/8"1 13/16"2 7/16"

9/16"3/4"1"

1 1/8"1 1/4"1 3/4"

22 5/83 5/8

16,00032,00064,000

1.594.219.17

Clutch I.D. ItemNumber A B C D E F G H SUltimate

MechanicalLoad (lbs)

WeightEach Piece

(lbs)

RL-3 RAPID LIFT TECH ERECTION ANCHOR DIMENSIONS

RL-31 Shear Bar

RL-3

RL-32Refer to Page 38for L

L

B

S

G

FH

ED

C

A

High CapacityAvailable


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RL-3 TECH ERECTION ANCHOR

Ring ClutchSystem

ClutchI.D.

StandardItem

Number

PanelThickness

(in)

Shear w/ Shear Bar2.66:1 Safety Factor (lbs)

Shear w/ Shear Bar4:1 Safety Factor

(lbs)

Tension w/o Tension Bar 4:1 Safety Factor (lbs)

Standard Tension w/ Tension Bar 4:1 Safety Factor (lbs)

2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T

2.5T2.5T2.5T2.5T2.5T2.5T2.5T2.5T2.5T2.5T5T5T5T5T5T5T5T5T10T10T10T10T10T10T

795277952779527795277952779527795277952779527795277954879548795487954879548795487954879548795897958979589795897958979589

79527HC79527HC79527HC79527HC79527HC79527HC79527HC79527HC79527HC79527HC79548HC79548HC79548HC79548HC79548HC79548HC79548HC79548HC79589HC79589HC79589HC79589HC79589HC79589HC

High CapcityItem Number

4" min.5"

5 1/2"6"7"8"9"10"11"12"

5 1/2" min.6"7"8"9"10"11"12"

7 1/2" min.8"9"10"11"12"

2,2503,1603,4603,7804,0004,0004,0004,0004,0004,0004,0204,4904,6705,1405,4905,7905,9106,0306,0306,0306,1906,4306,6506,850

1,4902,1102,1302,5202,8703,1603,4203,6403,8404,0002,6702,9903,1703,4303,6503,8603,9304,0104,0104,0104,1204,2804,4204,550

3,1903,9004,0004,0004,0004,0004,0004,0004,0004,0004,9705,1706,0306,9107,7508,0008,0008,0007,2207,6908,6409,58010,61011,680

4,0004,0004,0004,0004,0004,0004,0004,0004,0004,0008,0008,0008,0008,0008,0008,0008,0008,00016,00016,00016,00016,00016,00016,000

High Capacity Tension w/ Tension Bar 4:1 Safety Factor (lbs)

121212121212121212121212121212121212181818181818

Min CornerDistance

(in)5,0005,0005,0005,0005,0005,0005,0005,0005,0005,00010,00010,00010,00010,00010,00010,00010,00010,00020,00020,00020,00020,00020,00020,000

RL-3 2-TON, 4-TON, 8-TON


1) The 2.66:1 safety factor is commonly used for back stripping operations. Increased safety factor may be required for unusual live loads or cable magnification.

2) To obtain the shear values shown, it is necessary to use the appropriate Meadow Burke shear bar or equal.

3) Given full embedment, reinforcement and minimum compressive strength concrete; Tech Erection Anchors should achieve a pull out strength equal to their ultimate mechanical strength.

4) Minimum anchor spacing is double the corner distance for unreinforced anchors.





RL-4 RAPID LIFT TECH ERECTION ANCHOR WITH SHEAR PLATESTD: 2-Ton, 4-Ton and 8-Ton High Capacity: 2.5-Ton, 5-Ton and 10-Ton

The RL-4 Tech Erection Anchor with Plate is similar indesign and use to the RL-3 Tech Erection Anchor, but hasthe added shear plate to eliminate the need for a shearbar. This design feature gives the anchor a smaller heightenvelope allowing it to be used in thinner concrete pan-els. This anchor is available in the sizes shown in thetable and in plain or hot dip galvanize finish.

See Ring Clutches on page 46, 47, and 48, the RecessingMembers on 49, 50 and 51, and the Tension Bars onpage 38.

See Standard RL-3 Tech Erection Anchor for all other dimensions.

Ring ClutchSystem Clutch I.D.

Item NumberStandard

Panel Thickness

(in)

SHEAR 2.66:1 Safety Factor

(lbs)

SHEAR 4:1 Safety Factor

(lbs)

TENSION w/oTension Bar 4:1

Safety Factor (lbs)

TENSION w/Tension Bar 4:1

Safety Factor (lbs)


Safety Factor (lbs)

Standard High Capacity

2T/2.5T2T/2.5T2T/2.5T2T/2.5T4T/5T4T/5T4T/5T4T/5T4T/5T

8T/10T8T/10T8T/10T

2.5T2.5T2.5T2.5T5T5T5T5T5T

10T10T10T

79527SP79527SP79527SP79527SP79548SP79548SP79548SP79548SP79548SP79589SP79589SP79589SP

Item NumberHigh Capacity

79527SPHC79527SPHC79527SPHC79527SPHC79548SPHC79548SPHC79548SPHC79548SPHC79548SPHC79589SPHC79589SPHC79589SPHC

3 1/2" min.4"

4 1/2"5"

4" min.4 1/2"

5"5 1/2"

6"7" min.7 1/2"

8"

215029303040316027103710400041604290603060306030

143019502020210018002470266027702860401040104010

264031903550390034003860473049705170710072207690

400040004000400080008000800080008000

16,00016,00016,000

5000500050005000

10,00010,00010,00010,00010,00020,00020,00020,000

121212121212121212181818



1) The 2.66:1 safety factor is commonly used for back stripping operations. Increased safety factor may be required for unusual live loads or cable magnification.

2) Given full embedment, reinforcement and minimum compressive strength concrete; Tech Erection Anchors should achieve a pullout strength equal to their ultimate mechanical strength.

3) Minimum anchor spacing is double the corner distance for unreinforced anchors.


Ring ClutchSystem2T/2.5T4T/5T

8T/10T

2.5T5T

10T

79527SP79548SP79589SP

2 1/2"2 1/2"

3"

3/4"1 1/4"1 5/8"

3"3"

3 1/2"

1/4"3/8"3/8"

2.124.9310.33

3 1/2"4"7"

Clutch I.D. Item NumberStandard79527SPHC79548SPHC79589SPHC

Item NumberHigh Capacity A B C D Weight (lbs)

MinimumPanel Thickness

RL-4 TECH ERECTION ANCHOR WITH PLATE

B

D

A

C


Min CornerDistance

(in)


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RL-6 ERECTION ANCHOR2-Ton, 4-Ton and 8-Ton

The RL-6 Erection Anchor is similar in design and use to the standard RL-3 TechErection Anchor, but has a split-foot design to widely disperse applied loads and toenhance pullout capability. Refer to the accompanying Tables for size, availability andsafe working loads. The RL-6 Erection Anchor is available in plain and hot dip galvanizefinish.

See Ring Clutches on page 52, 53, and 54, the Recessing Members on 55, 56 and 59,and the Tension Bars on page 44.

C

G

H

F

RingClutchSystem

2T/2.5T4T/5T8T/10T8T/10T

2T/2.5T4T/5T8T/10T8T/10T

79047790487934979049

2"2 1/2"3 3/4"3 3/4"

8"10 1/2"

12 13/16"12 13/16"

3/8"5/8"5/8"3/4"

1 13/16"2 1/2"3 1/8"3 1/8"

2 1/4"3 3/16"

4"4"

1 3/8"1 13/16"2 7/16"2 7/16"

9/16"3/4"1"1"

1 1/8"1 1/4"1 3/4"1 3/4"

2 3/4"3 3/8"

5"5"

16,00032,00048,00064,000

1.594.217.649.17

Clutch I.D. ItemNumber A B C D E F G H S

UltimateMechanical

Load(lbs)

WeightEach Piece

(lbs)

RL-6 ERECTION HEAD ANCHOR

Ring ClutchSystem Clutch I.D. Item Number

Panel Thicknessin Inches

SHEARw/ Shear Bar

2.66:1 Safety Factor

SHEARw/ Shear Bar

4:1 Safety Factor

TENSIONw/o Tension Bar4:1 Safety Factor

TENSIONw/ Tension Bar

4:1 Safety Factor2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T2T/2.5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T4T/5T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T

2.5T2.5T2.5T2.5T2.5T2.5T5T5T5T5T5T5T5T5T10T10T10T10T10T10T10T10T10T10T10T10T

7904779047790477904779047790477904879048790487904879048790487904879048793497934979349793497934979349790497904979049790497904979049

4" min.5"

5 1/2"6"7"8"

5 1/2" min.6"7"8"9"10"11"12"

7 1/2" min.8"9"10"11"12"

7 1/2" min.8"9"10"11"12"

2250 lbs.3160346037804000400040204490467051405490579059106030603060306190643066506850603060306190643066506850

1490 lbs.2110213025202870316026702990317034303650386039304010401040104120428044204550401040104120428044204550

3190 lbs.39004000400040004000497051706030691077508000800080007220769086409580

10,61011,6807220769086409580

10,61011,680

4000 lbs.4000400040004000400080008000800080008000800080008000

12,00012,00012,00012,00012,00012,00016,00016,00016,00016,00016,00016,000



1) The 2.66:1 safety factor is commonly used for back stripping operations. Increased safety factor may be required for unusual live loads or cable magnification.2) To obtain the shear values shown, it is necessary to use the appropriate Meadow Burke Shear Bar or equal. 3) Given full embedment, reinforcement and minimum compressive strength concrete; Erection Anchors should achieve a pullout strength equal to their ultimate mechanical strength.4) Minimum anchor spacing is double the corner distance for unreinforced anchors.


B

D

E

S

A

1212121212121212121212121212181818181818181818181818

Min CornerDistance

(in)




The RL-7 Erection Anchor with Plate is similar in design and use tothe RL-6 Erection Anchor, but has the added shear plate to elimi-nate the need for a shear bar. This design feature gives the anchora smaller height envelope allowing it to be used in thinner concretepanels. The anchor is available in the sizes shown in the table inplain or hot dip galvanize finish.

See Ring Clutches on page 46, 47, and 48, the Recessing Memberson 49, 50 and 53, and the Tension Bars on page 38.

RL-7 ERECTION ANCHOR WITH SHEAR PLATE 2-Ton, 4-Ton and 8-Ton

See standard RL-6 Erection Anchor for all other applicable dimensions.

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.1) The 2.66:1 safety factor is commonly used for back stripping operations. Increased safety factor may be required for unusual live loads or cable magnification.2) Given full embedment, reinforcement and minimum compressive strength concrete; Erection Anchors should achieve a pullout strength equal to their ultimate mechanical strength.3) Minimum anchor spacing is double the corner distance for unreinforced anchors.

To Order, Specify: quantity, name, item number and finish.

Ring ClutchSystem2T/2.5T4T/5T8T/10T8T/10T

2.5T5T10T10T

79147791487944979149

2 1/2"2 1/2"

3"3"

3/4"1 1/4"1 5/8"1 5/8"

3"3"

3 1/2"3 1/2"

1/4"3/8"3/8"3/8"

2.124.938.30

10.33

3 1/2"4"7"7"

Clutch I.D. Item Number A B C D Weight(lbs)Minimum Panel

Thickness

RL-7 ERECTION ANCHOR WITH PLATE

Ring ClutchSystem Clutch I.D. Item Number

Panel Thicknessin Inches

SHEAR2.66:1 Safety Factor (lbs)

SHEAR4:1 Safety Factor

(lbs)

TENSION w/oTension Bar 4:1

Safety Factor (lbs)


Safety Factor (lbs)2T/2.5T2T/2.5T2T/2.5T2T/2.5T4T/5T4T/5T4T/5T4T/5T4T/5T

8T/10T8T/10T8T/10T8T/10T8T/10T8T/10T

2.5T2.5T2.5T2.5T5T5T5T5T5T10T10T10T10T10T10T

791477914779147791477914879148791487914879148794497944979449791497914979149

3 1/2" min.4"

4 1/2"5"

4" min.4 1/2"

5"5 1/2"

6"7" min.7 1/2"

8"7" min.7 1/2"

8"

2,1502,9303,0403,1602,7103,7104,0004,1604,2906,0306,0306,0306,0306,0306,030

1,4301,9502,0202,1001,8002,4702,6602,7702,8604,0104,0104,0104,0104,0104,010

2,6403,1903,5503,9003,4003,8604,7304,9705,1707,1007,2207,6907,1007,2207,690

4,0004,0004,0004,0008,0008,0008,0008,0008,00012,00012,00012,00016,00016,00016,000

RL-7 2-TON, 4-TON, 6-TON, 8-TON

B

D

C

A

121212121212121212181818181818

Min CornerDistance

(in)



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Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.1) To obtain the shear values shown, it is necessary to use the appropriate Meadow Burke shear bar or equal. 2) Given full embedment, reinforcement and minimum compressive strength concrete; Erection Head Anchors should achieve a pull

out strength equal to their ultimate mechanical strength.


RL-10 ERECTION HEAD ANCHOR2-Ton, 4-Ton and 8-Ton

The RL-10 Erection Head Anchor is designed to be used in conjunction with theTension Bar in thin-wall sections. It is an ideal choice for spall-free performance in A-frame or tilt table applications.

See Ring Clutches on page 52, 53, and 54, the Recessing Members on 55, 56 and59, and the Tension Bars on page 44.

RingClutchSystem

2T/2.5T4T/5T8T/10T8T/10T

2.5T5T

10T10T

79403790757938579185

2"2 1/2"3 3/4"3 3/4"

4 1/4"7 7/16"13 1/4"13 1/4"

3/8"5/8"5/8"3/4"

1 13/16"2 1/2"3 1/8"3 1/8"

2 3/8"3 3/16"

4"4"

1 3/8"1 7/8"2 7/16"2 7/16"

5/8"3/4"1"1"

1 3/32"1 1/4"1 3/4"1 3/4"

40008000

12,00016,000

500010,000

20,000

0.702.767.649.17

ClutchI.D.

StandardItem

Number

79403HC79075HC

79185HC

HighCapacity

ItemNumber

A B C D E F G H

StarndardAllowableReinforced

Tension LoadSF 4:1 (lbs)

High CapacityAllowableReinforced

Tension LoadSF 4:1 (lbs)

WeightEachPiece(lbs)

RL-10 ERECTION HEAD ANCHOR

RL-9 45 TECH ERECTION ANCHOR - 45 DATARing Clutch

System Clutch I.D. Item NumberPanel Thickness

(in)AShear

4:1 Safety FactorTension w/ Tension Bar

4:1 Safety Factor2T/2.5T4T/5T8T/10T

2.5T5T10T

79527SP-4579548SP-4579589SP-45

6 1/2"8"9"

2.52.75

3

215035005600 3 4

340054007400

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.1 Given full embedment, reinforcement and minimum compressive strength concrete; Erection Head Anchors should achieve a pull out strength equal to their ultimate

mechanical strength.2 This insert requires 2" concrete below or underneath the shear plate.3 Load based on 2500 PSI compressive concrete strength4 Shear value can be increased by the ration of square roots of the compressive strength up to the maximum tension capacity of 7400 lbs


F

C

DE

B

H

GA

RL-9 45 TECH ERECTION ANCHOR2-Ton, 4-Ton and 8-Ton

The RL-9 Tech Erection Anchor - 45 is an adaptation of the regular Tech Erection Anchorfor use with panels where the lifting edge is cast at a 45 angle. The anchor is availablein the sizes shown in the table and in plain or hot dip galvanize finish.

NOTE: A RL-32 Tension Bar is required with this anchor.


A3"

RL-32

RL-10

121218

Min CornerDistance (in)

4577

Min PanelThickness

(in)

12121818

MinCorner

Distance(in)



Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.1) Given full embedment, tension bar reinforcement, and minimum compressive strength concrete; Erection Head Anchors achieve a pull out strength equal to their ultimate mechanical strength.

* Shear capacity is less than the standard erection anchor due to the shorter length. The 8-ton erection head two-hole anchor loads are equal to the standard erection anchor due to length.

* Grade 60 Rebar


RL-11 ERECTION HEAD ANCHOR WITH PLATE2-Ton, 4-Ton and 8-Ton

The RL-11 Erection Head Anchor with Plate is similar in design and use to the RL-10Erection Head Anchor, but has the added shear plate to provide additional shear capa-bility and eliminate the need for a shear bar. This design feature gives the anchor asmaller height envelope allowing it to be used in thinner concrete panels. The anchoris available in the sizes shown in plain or hot dip galvanize finish.


Ring ClutchSystem

79403SP79075SP79185SP

2-1/22-1/2

3

3/41-1/41-5/8

33

3-1/2

1/43/83/8

4"5-1/2

7

2T/2.5T4T/5T

8T/10T

2.5T5T

10T

Clutch I.D. Item Number A B C DMinimum Panel

ThicknessShear

4:1 S.F. (lbs)*

RL-11 RAPID LIFT ERECTION HEAD WITH PLATE ANCHOR

Concrete Strength

48"42"34"

79"69"57"

104"90"74"

1,500 psi2,000 psi3,000 psi

30"26"21"

79075

#7*

#22*

79385

#8*

#25*

79185

#10*

#32*

79403

#5*

#16*

Inch

Metric

RebarSize

L Dimension

Item NumberRL-10 ERECTION HEAD ANCHOR with WELDED REBAR

A

D

B

C

RL-32

RL-11

L

Weld Length:1-3/4" @ 79403 - 3/8" fillet welds (2)4" @ 79075 - 3/8" fillet welds (2)5" @ 79385 - 3/8" fillet welds (2)5" @ 79185 - 5/8" fillet welds (2)


1235*2670*4010*

121218

Min CornerDistance (in)

79403SPHC79075SPHC79185SPHC

High CapacityItem Number



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RL-21 FLAT FOOT ANCHOR2-Ton

The RL-21 Flat Foot Anchor is designed for back stripping and lifting thin-wall precast ele-ments. The legs of the anchor extend out sufficiently to accommodate recommendedadditional reinforcing steel. See recommended reinforcing method and sketch below.Refer to the table for anchor dimensions and safe working loads. The Flat Foot Anchor isavailable in the sizes shown in the table and in plain or hot dip galvanize finish.

See Ring Clutches on page 52, 53, and 54, the Recessing Members on 55, 56 and 59, andthe Tension Bars on page 44.

Reinforcing Recommendation:Crisscross the legs of the anchor with four (4) 18 lengths of #4 rebar as shown in thesketch.

NOTE: A minimum 3/4" concrete cover below the anchor is required to achieve postedworking loads.

1) Tension values shown are based on 3,500 psi standard weight concrete and a minimum edge distance of (2B+A)/2.2) Tension values shown are based on 3,000 psi standard weight concrete, a minimum edge distance of 10 and #4 rebar cut to 18 lengths reinforcing the anchor as shown in the sketch.


RingClutchSystem

2T/2.5T2T/2.5T2T/2.5T2T/2.5T4T/5T8T/10T

Clutch I.D.

2.5T2.5T2.5T2.5T5T10T

ItemNumber

790527905379058794007915779055

A

1 1/4"1 1/4"1 1/4"1 1/4"

B

2 3/4"3 3/8"2 3/4"3 3/8"

C

3/16"3/16"3/8"3/8"

S

4"4"4"4"

AllowableUnreinforcedTension Load4:1 SF (lbs)1

1,3251,8931,3251,893

AllowableReinforced

Tension Load4:1 SF (lbs)2

2,0002,0004,0004,000

UltimateMechanical

Load Tension(lbs)

WeightPer Piece

(lbs)

0.320.360.460.56

RL-21 FLAT FOOT ANCHOR DATA

The flat feet of the anchor extend 2 or more on each side of the anchorto accommodate the recommended reinforcing steel.

NOTE: The flat foot anchor has allowable face shear loads that are equal toor greater than unreinforced face tension loads for anchors located in apanel or concrete unit at a distance of at least 2B+A from the edges.

C

8,0008,000

16,00016,000

Discontinued: See Plate Anchor Item 45847, page 36.Discontinued: See Plate Anchor Item 79054, page 36.

#4 Bar(Typical)

A

S

B





RL-22 TWO HOLE ANCHORStandard: 2-Ton, 4-Ton, 8-Ton and 22-TonHigh: 2.5-Ton, 5-Ton, 10-Ton

The RL-22 Two Hole Anchor is effectively used for stripping panels from tilt tables and transporting panels.It is also a good choice in applications where spread-type anchors cant be used and in panels construct-ed with lightweight concrete. It is designed with a secondary hole that can accept additional rebar or aTension Bar to increase lifting capacity and to distribute lifting loads deep into the concrete. The Two HoleAnchor is available in the sizes shown in the table and in plain or hot dip galvanize finish.

Minimum reinforcing length (L) is needed to develop the full strength of the anchor.

See Ring Clutches on page 46, 47, and 48, the Recessing Members on 49, 50 and 53, and the Tension Barson page 38.

RingClutchSystem

2T/2.5T2T/2.5T4T/5T8T/10T22T/26T

ClutchI.D.

2.5T2.5T5T

10T26T

ItemNumber

7912279190791247912579176

HighCapacity

Item Number

79122HC

79124HC79125HC

A

1 1/4"1 1/4"1 1/2"2 1/2"3 1/8"

B

4"2 3/4"5 1/2"

7"11 3/4"

C

3/8"3/8"5/8"3/4"1"

D

3/4"9/16"

13/16"1 3/16"1 13/16"

E

9/16"5/8"

13/16"1 7/16"1 13/16"

G

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

1"1 3/8"

AllowableReinforced

Tension Load4:1 SF (lbs)

4,0004,0008,00016,00044,000

WeightEach(lbs)

0.460.401.303.068.80

RL-22 RAPID LIFT TWO HOLE ANCHOR

TYPICAL TWO HOLE ANCHOR REINFORCEMENTRL-32 Tension Bar

Reinforcement using theRapid Lift Tension Bar.

B

D

AC

G

E

Table is based on dead load only, 150 PCF. Refer to table below for tension bar length at desired concretestrength. Minimum concrete compression strength = 1500 psi.


L

30RL-32

RL-22

TENSION w/Tension Bar4:1 SafetyFactor (lbs)

10,00020,000


(in)

2 3/42 3/4

457

High CapacityStandard

Load Group 4-Ton 8-Ton

ConcreteStrength (psi)

22-Ton2-Ton

RL-32 TENSION BAR for STANDARD and HIGH CAPACITY

Rebar InchSize Metric

#3#10

3-0

2-9

2-8

2-6

2-0

2-0

1,500

2,000

2,500

3,000

4,000

5,000

4-0

3-6

3-0

3-0

2-6

2-2

6-0

5-6

5-0

4-6

3-7

3-3

5-Ton 10-Ton2.5-Ton

#4#13

4-0

3-6

3-0

3-0

2-6

2-2

4-5

3-10

3-6

3-3

3-0

2-6

7-6

6-7

6-0

5-6

4-10

4-5

#6#19

#7#22

#5#16

#4#13

#9#29

L Dimension (overall length of rebar)

12-0

9-6

9-3

9-0

9-0

9-0



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RL-23 SPREAD ANCHOR2-Ton, 4-Ton, 8-Ton and 22-Ton

The RL-23 Spread Anchor is designed with a spread-foot that produces exceptional pullout capacity. This versatile anchor can be used in the face, back or edge of panels forback stripping and rotation from horizontal to vertical. This anchor can be pulled in anydirection as long as minimum edge distance is maintained. However spalling may occurwhen pulling in shear perpendicular to the long side of the void. A minimum 3/4 con-crete cover below the anchor is recommended. The Spread Anchor is available in thesizes shown in the table and in plain or hot dip galvanize finish.


NOTE: The spread anchor has allowable face shear loads that are equal to or greaterthan the face tension loads for anchors located in a panel or concrete unit at a distanceof 3B+A from the edge. In order to achieve these loads, shear has to be applied parallelto long side of void.

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 3,500 psi.* In order to achieve these loads, shear has to be long side of void.

Refer to pages 34 and 35 for anchor capacities in thin wall applications.


RingClutchSystem

2T/2.5T2T/2.5T2T/2.5T4T/5T4T/5T4T/5T4T/5T4T/5T

8T/10T8T/10T

22T/26T22T/26T

2.5T2.5T2.5T5T5T5T5T5T

10T10T26T26T

790507911079059791137911479115791167911779319791197917279174

NoNoNoNoNoNoNoYesYesYesYesYes

1 1/4"1 1/4"1 1/4"1 1/2"1 1/2"1 1/2"1 1/2"1 1/2"2 1/2"2 1/2"3 1/8"3 1/8"

4 3/4"4"

5 1/2"4"

4 3/4"6 3/4"6 1/4"9 1/2"

11"11"15"

18 7/8"

3/16"3/8"3/8"1/2"1/2"1/2"5/8"5/8"5/8"3/4"3/4"1"

2 3/4"2 3/4"2 3/4"3 3/8"3 3/8"3 3/8"3 3/8"3 3/8"5 1/4"5 1/4"6 1/4"6 1/4"

2,0002,5304,0002,6703,5906,7205,8508,00012,00016,00032,80044,000

8,00016,00016,00024,00024,00032,00032,00032,00048,00064,000

136,000176,000

0.320.490.730.961.121.401.612.484.485.379.5916.07

Clutch I.D. ItemNumberAdditional

Hole A B C S

AllowableUnreinforcedTension Load4:1 SF (lbs)

UltimateMechanical

Load Tension(lbs)

WeightPer Piece

(lbs)

RL-23 SPREAD ANCHOR DATA

B

A

S

C




SINGLE RL-23 SPREAD ANCHOR TENSILE CAPACITIES IN THIN WALLS (cont.)

Table is based on dead load only, 150 PCF and a standard concrete compressive strength of 4,500 psi concrete.

Tensile Safe Working Load Per AnchorActual Corner Distance

inches inches 8 inches 12 inches 18 inches 24 inches 30 inches

Actual EdgeThickness (Te)

Critical WallThickness

Rapid Lift AnchorTon & Length

4567894567894567894567895678910

2"2 1/2"

3"3 1/2"

4"4 1/2"

2"2 1/2"

3"3 1/2"

4"4 1/2"

2"2 1/2"

3"3 1/2"

4"4 1/2"

2

Precast Meadow Burke Manual Inserts in Precast

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