stones drilled & pinned to bedrock with metal rods (two case studies) by dave derrick
TRANSCRIPT
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 @ [email protected]
Enjoy the information!!
Cleophus napping in the sun