adsc presentation - 11.30.12
TRANSCRIPT
![Page 1: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/1.jpg)
DRILLED SHAFT / BORED IN PILE INSTALLATION
New Brunswick Fitness & Wellness PlazaNew Brunswick, NJ
Presentation to:ADSC Northeast Chapter
Holiday Inn, Clark, NJNovember 30th, 2012
Presentation by:Jeffrey B. Ayres
Moretrench American Corporation
![Page 2: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/2.jpg)
PROJECT OVERVIEW
• Proposed Construction:• Fitness Center• Supermarket• Parking Garage
• Owner• City of New Brunswick
• General Contractor• Joseph Jingoli & Sons,
Inc.• Structural Engineer
• PS&S• Foundation Contractor
• Moretrench
![Page 3: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/3.jpg)
PROJECT OVERVIEW
• Scheduling / Coordination• Difficult Schedule• No relief in schedule
when schedule slid• Additional subs added
when schedule slid
![Page 4: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/4.jpg)
MTAC CONTRACT WORK – DRILLED SHAFTS
• 77 Total Drilled Shafts• Provide support for
new column loads• 39 @ 3’ diameter
• Reinforcing dowels • 38 @ 6’ diameter
• Reinforcing dowels• Anchor bolts
(precast connection)
• Average drill length: 30’
![Page 5: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/5.jpg)
DRILL RIG (DRILLED SHAFTS)
• Soilmec SR-65• Hydraulic Rotary Rig• 22,500 mm (~74’) mast
• Equipped with:• Self Handling Counterweight• Kelly Drilling System• Drilling Mate System
• Actively monitor drill depth, crowd pressure, mast verticality, pump pressures, and more
![Page 6: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/6.jpg)
DRILL RIG (DRILLED SHAFTS)
• Bottom of Mast Clearance• Cable system feed on back of mast• Enough clearance for casing
“spinner”
WHY SOILMEC?
![Page 7: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/7.jpg)
MTAC CONTRACT WORK – BIP’s
• 246 Bored In Piles (BIP’s)• Provide support for new
slab• 18” Diameter• 6 x #6 reinforcing cage
substituted with #18 grade 75 threadbar
• Average drill length: 20’
![Page 8: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/8.jpg)
DRILLING EQUIPMENT (BIP)
• Bauer RTG RG 19 T• Universal Piling Rig• Up to 78’ Mast Height
• Equipped with:• PIR (Pile Installation
Recorder)• Actively monitor drill
depth, grout volume per 5’ increment, and more
![Page 9: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/9.jpg)
MATERIAL / EQUIPMENT SUPPLIERS
• Soilmec SR-65• American Equipment & Fabrication,
East Providence, RI • Bauer RTG RG 19T
• Moretrench owned, purchased from Posillico, Inc.
• Temporary Casing• Favor Steel & Fabricating,
Bessemer, AL• Drill Tooling
• Jeffrey Machine, Birmingham, AL• Concrete
• Clayton Concrete, Edison, NJ• Rebar
• Barker Steel, Avenel, NJ
![Page 10: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/10.jpg)
LOGISTICS
![Page 11: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/11.jpg)
LOGISTICAL ISSUES
• Existing Overhead Powerlines• Existing Robert Wood Johnson (RWJ) Building• Existing Utilities• Northeast Regional Amtrak Line
![Page 12: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/12.jpg)
EXISTING OVERHEAD POWERLINES
![Page 13: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/13.jpg)
EXISTING OVERHEAD POWERLINES
![Page 14: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/14.jpg)
EXISTING OVERHEAD POWERLINES
![Page 15: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/15.jpg)
EXISTING OVERHEAD POWERLINES
![Page 16: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/16.jpg)
RWJ BUILDING DEMOLITION
Existing RWJ Building
![Page 17: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/17.jpg)
RWJ BUILDING DEMOLITION
![Page 18: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/18.jpg)
RWJ BUILDING DEMOLITION
Mobilized prior to demolition
22 caissons unavailable during demolition
Obstructions / Utilities encountered beneath building footprint while drilling
![Page 19: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/19.jpg)
RWJ BUILDING DEMOLITION
![Page 20: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/20.jpg)
EXISTING / NEW UTILITIES
![Page 21: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/21.jpg)
AMTRAK PROXIMITY
• Required to be 15’ minimum between mast & edge of Amtrak line
![Page 22: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/22.jpg)
DRILLED SHAFTS
![Page 23: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/23.jpg)
DRILLING PROCEDURE (3’ DRILLED SHAFTS)
• 48” diameter starter can for top 5’
• 42” diameter “inner” can to top of rock
• Socketed into weathered shale
• Visual inspection performed by PS&S
![Page 24: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/24.jpg)
DRILLING PROCEDURE (6’ DRILLED SHAFTS)
• 87” diameter starter can for top 5’
• 78” diameter “inner” can to top of rock
• Socketed into weathered shale
• Visual inspection performed by PS&S
![Page 25: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/25.jpg)
6’ DRILL TOOLING
![Page 26: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/26.jpg)
3’ DRILL TOOLING
Soilmec equipped to switch between both 3’ and 6’ diameter tooling easily
![Page 27: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/27.jpg)
REINFORCING CAGE / CONCRETE
• 26 x #11 bars per 6’ caisson• 10 x #9 bars per 3’ caisson• Cage placed with drill rig or crane
![Page 28: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/28.jpg)
REINFORCING CAGE / CONCRETE
• Top of reinforcing cage @ 3” below top of caisson (minimum coverage of reinforcement)
• Water removal (hydraulic pump) & shallow depth permitted end dumping of concrete
![Page 29: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/29.jpg)
DOWELS
• Issues Faced:• All 77 caissons received either dowels or anchor bolts
• Connection to grade beam, column, etc.• Drilling grade consistent at ~ elevation 47• Top of caisson elevation varied from elevation 47 to elevation 40• Drilling / epoxying dowels into 6’ shafts was not permitted
• Solutions:• “Wet-Set” dowels for 6’ shafts using premade wooden templates• Drill / epoxy any remaining dowels once top of caisson is exposed
![Page 30: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/30.jpg)
DOWELS
• More than a dozen different dowel patterns• Up to 7’ depth below drilling grade (worst case scenario)
![Page 31: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/31.jpg)
DOWELS
![Page 32: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/32.jpg)
ANCHOR BOLTS
• Issues Faced:• Anchor Bolt location and embedment in top of drilled shafts were
critical, with nearly negligible tolerances• Solution:
• Per the engineer, pour shaft concrete 3’ below top of caisson (cold joint).
• Place 6’ corrugated pipe around top of shaft• Set template at correct elevation and plan location• Pour remainder of concrete• Monitor location of template before, during, and after pour
![Page 33: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/33.jpg)
ANCHOR BOLTS
• Left: 6’ Diameter Caisson with Concrete 2’-3’ low• Right: 6’ Diameter Corrugated Pipe
![Page 34: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/34.jpg)
ANCHOR BOLTS
• Left: Typical Anchor Bolt Template• Right: Placement of Anchor Bolt Template at exact elevation prior to
pour
![Page 35: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/35.jpg)
ANCHOR BOLTS
![Page 36: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/36.jpg)
ANCHOR BOLTS
![Page 37: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/37.jpg)
ANCHOR BOLTS
![Page 38: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/38.jpg)
ANCHOR BOLTS
• Left: Finished Anchor Bolt Shaft• Right: Precast Column @ Anchor Bolt Shaft
![Page 39: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/39.jpg)
BORED IN PILES (BIP’s)
![Page 40: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/40.jpg)
DRILLING PROCEDURE (BORED IN PILES)
• 18” Diameter Continuous Flight Hollow Stem Auger• Advanced 5’ below top of first rock encountered or to auger refusal
• <1’ / minute • Once tip reached, sand-cement grout pumped through auger• 115% of theoretical volume (measured by PIR & stroke count)• Slow positive rotation maintained during withdrawal
![Page 41: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/41.jpg)
DRILLING PROCEDURE (BORED IN PILES)
• Upon grouting completion, pile top protector placed into hole (left picture)
• Top of Pile (grout) elevation reached by removing excess grout from top• #18 Grade 75 Threadbar installed full length (right) along with 4 x #4
bars with 90 degree bends• Average Production – 15 to 20 / DAY
![Page 42: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/42.jpg)
BEFORE
![Page 43: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/43.jpg)
AFTER
![Page 44: ADSC Presentation - 11.30.12](https://reader038.vdocuments.pub/reader038/viewer/2022103002/55c469a4bb61eb2b258b4627/html5/thumbnails/44.jpg)
NEW BRUNSWICK WELLNESS PLAZA
QUESTIONS?