ALTERNATIVE TO A SOIL NAIL WALL · 2017-05-07 · ALTERNATIVE TO A SOIL NAIL WALL Annual Kansas...
Transcript of ALTERNATIVE TO A SOIL NAIL WALL · 2017-05-07 · ALTERNATIVE TO A SOIL NAIL WALL Annual Kansas...
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Diego Plazas, EIT
Berkel & Company Contractors, Inc.
RAY COUNTY
ALTERNATIVE TO A SOIL NAIL WALL
Annual Kansas City Geotechnical Conference
Overland Park, Kansas
April 20,2017
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Introduction
• Soil Nail Wall Route T
– Location
– Scope of work
– Geology
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Soil Nail Wall
Wall 1300 lf
20602 sf
Approx. 824 Soil Nails total drilling of 12360 lf
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Soil Nail Wall
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Site Geology
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Site Geology
Flat Missouri river flood
plain and the hilly
norther bluff. The river
plain consists of alluvial
sand and the bluff
consist of loess
overlying shale.
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Constructions Challenges
• Sand on the east site of the construction limits
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Constructions Challenges
• Sand on the east site of the construction limits
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Constructions Challenges
• No impact to the BNSF operations and right of way
• Limited access for drill rig equipment
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Constructions Challenges
Access for drill rigs and 12360 lf of drilling
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Alternative Design
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Alternative Design
110 tiebacks Average length 35 lf
Total drilling 3850
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Constructions Challenges
• No need for temporary shoring
• Less material to be excavated
• Less backfill
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Constructions Challenges
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Constructions Challenges
• Sand on the east side of the construction limits
• Limited access for drill rig equipment
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Soldier Beams
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Soldier Pile Installation
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Soldier Beams
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Soldier Beams
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Soldier Beams
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Construction
• Existing Home Moved off Site for Construction
• 40 Foot Deep Excavation for Subterranean Structure
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Site Soils
• Dense matrix of sand, gravel,
cobbles and boulders
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Earth Retention System
• Soldier Pile & Wood Lagging System
• Internally Braced Excavation
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Soldier Pile Drilling
• Installation with smaller overburden drill rig
• Same equipment utilized for micropile
installation
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Soldier Pile Drilling
• Selection of Pipe Piles in lieu of
conventional Wide Flange Beams
• Install casing to maintain hole
stability
• Utilize casing as soldier pile
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Pipe Soldier Piles & Wood Lagging
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Winter
35 degrees
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Backfill
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Questions
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Thanks