STONES DRILLED & PINNED TO

BEDROCK WITH METAL RODS

(Two case studies)by Dave Derrick

THE EIGHTEENMILE

CREEK PROJECT PHASE I CONSTRUCTED

AUG-SEPT 2003by Dave Derrick

At higher flows energy is vectoring straight into 14 ft tall eroding bank

Pix by Mark Seider

Close-up of large stones, these were hand selected & are 3 ft by 3 ft with two sides flat.

My sneaker

Tough to specify stone. Call some quarries to see what is available. Stone might be called “ledge rock,

shelf rock, flats, or big flats”. Thickness will be determined by how

it is fractured & breaks out during blasting. Must be fairly flat on two

sides. Inspect stone, then spec. minimum measurements, say 2 ft x 3

ft by 4 ft (can be exceeded, but cannot be smaller). When ready for

construction go to the quarry & hand pick the stone.

Schematic detail of Great Wall

with backfill & plantings (does

not include LUNKERS or

keys)

Toe stones are placed, drilled through stone & 1 ft deep into

underlying bedrock, metal rod is driven into the hole, excess cut

Looking DS at the Great Wall, it is approx. 300 ft long, notice upper bank is not smoothed, seeded, or planted yet

Pix by Derrick

Stepped back design allows fishing folk to use different levels

Looking DS, placing the first row of stones on bedrock

Detail of Great Wall of Newfane & Turbidity Curtain from project

Plans & Specifications

Only the bottom row of stone is drilled & pegged to bedrock

Shot rock used for

foundation

Hand drilling completely through the stone & one ft deep into bedrock. Stones

now pinned with a 4 ft long, one inch diameter rebar (not cut off yet)

Drilling completely through the stone &

one ft deep into bedrock. Stones now

pinned with a 4 ft long, one inch diameter

rebar (not cut off yet)

Bottom row of stones

drilled and pinned with

1 inch diameter

rebar

Drilling completely through the stone & one ft deep into bedrock. Stones will be pinned with a 4 ft long, one inch diameter rebar. Shot rock foundation in foreground. Flow from dam aimed right at wall!!

8” Surge stone base for large walk-able bank protection

Erosion Control Blankets supplied by Indian Valley Industries, Inc. Coir 700 mat (700 grams per square meter). 100% spun

coir, with an open area of 50%. 100% biodegradable.

Pix by Derrick

Looking US. 5 growing seasons later. Riparian

plantings are robust, June 7, 2009. Scale,

daughter Dana is 5 ft 2”

Since construction this project has been used extensively for public outreach (adult and

children) & as a teaching platform for fellow

professionals.

I got to fly in the DEC/State

Police helicopter.

Looking downstream, red line is the Great Wall of Newfane - Feb

2, 2005

Peaceful co-existence “combat” fishing

BIG THAW PLUS

RAIN = HIGH STAGES Feb 6, 2008

Looking US @ the Great Wall. Power generating dam in background.

Post-Project-18 Mile Creek, Phase II-Feb 6, 2008, Pix-Vic

PROJECT CONSTRUCTED

June 2006

CHAUTAUQUA CREEK ICE DAMAGE REDUCTION

PROJECT –Near its mouth @ Lake Erie

CHAUTAUQUA CREEK ICE DAMAGE REDUCTION

PROJECT –Near its mouth @ Lake Erie

Severe scour from ice and high flow velocities on the right descending bank had resulted in an overwidened section of stream.

Mid-channel sediment bars, mouth of creek @ Lake Erie clogged

No holding areas or habitat for steelhead A heavily used public fishing section of

the stream

NEED PLANS & SPECS

Single Stone Bendway Weirs (pegged to bedrock), spaced 50 ft apart

Key

Key

Key

Key

Key

Key

Key

Trench Stone (drilled & pegged)

Stacked Stone Wall (bottom row drilled & pegged)Sloped Stone using “Big Flats”, most 5 ft by 5 ft by 2 ft thick

Flow

DRILLING & PEGGING TOE

STONES & SINGLE STONE BENDWAY

WEIRS WITH METAL RODS

INTO BEDROCK

Construction June 2006. Looking DS @ 2 hoes

jack hammering a footer trench through a layer of weathered stone. Would not need to do this if stone was not

weathered.

Pix by derrick

7 ft long, 1 5/8 inch

diameter solid

rods for pegging stone to bedrock.

Pix by Joe Galati

Pix by Joe Galati

Dave Spann of Chautauqua County

Soil & Water Conservation District with a 7 ft long, 1 5/8 inch diameter solid

bar. Dave did everything from

writing the grant to providing

extraordinary project management. On time

& under budget!!!!

Construction June 2006.

Looking DS. Drilling 2 inch holes to peg

stone to bedrock. The 2

inch bit was the only one they had on

hand…

Pix by Joe Galati

This type of drill

needs a flat solid

foundation.

Construction June 2006. A good hole in a footer stone

in the jackhammered

trench.

Pix by Joe Galati

Construction June 2006. Looking US.

Metal pinning rods not cut off

yet.

Pix by derrick

Construction July 2006. Cut off

solid metal rod in drilled hole

pinning stone to underlying

bedrock

Pix by Joe Galati

Construction June 2006. Looking US

during placement of “big flat” stones on

the backfill/filter stone.

Pix by derrick

EVERYBODY WANTS COSTS, FOR ONCE WE HAVE COSTS!!

Big thanks to Dave Spann, Chautauqua County Soil & Water Conservation District for these

figures.

Rock Steel Rod

Plants Soil Seeds

$43,026. $5,655. $4,936. $3,458. $400.

Heavy Equipment

& Operators

Hydraulic Hammer

Rock Drilling(Merk Drilling,

Buffalo)

Land-scaping

$120,154. $11,450. $7,700. $3,805.

Total: $200,584.

CONSTRUCTION COSTS Does not include admin, design, permitting, program

management, construction oversight, or plant installation

CONSTRUCTION

COMPLETE

May 17, 2007. Looking DS @ top

bank willow poles & other plantings

Pix by Joe Galati

Looking upstream at the

SINGLE-STONE BENDWAY

WEIRS

Aug 31, 2006, looking US at two pegged to bedrock Single-Stone Bendway Weirs in the stacked

stone wall section. Only bottom stones in wall are pinned

Pix by derrick

Aug 29, 2006 -high water- Looking US, note dead water near toe & thalweg location near arrow, all

due to the Single Stone Bendway Weirs

Photo by Dave Spann

Looking downstream

at the SINGLE-STONE

BENDWAY WEIRS HIGH WATER AUG 29, 2006

Aug 29, 2006-high water-looking DS

Photo by Dave Spann

Note rooster tail defining right edge of high velocity water, slow smooth water surface near bank.

Mar 14, 2006. Looking DS. Close-up of two submerged Single-Stone Bendway

Weirs. Note dead water between weirs

Pix by Joe Galati

16 MONTHS AFTER

CONSTRUCTION

NOV 2007

Nov 8, 2007. Looking DS.

Good thalweg alignment off the ends of the Single-

Stone Bendway

Weirs

Pix by Joe Galati

This PowerPoint presentation was developed & built by Dave Derrick.

Any questions or comments, call my personal cell @ 601-218-7717, or email @ d_derrick@r2d-eng.com

Enjoy the information!!

Cleophus napping in the sun