High Capacity Micropile Construction.ppt 643l3w
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AGRA Foundations, Inc.
Richmond/San Rafael Bridge
HIGH CAPACITY MICROPILE CONSTRUCTION
Richmond/San Rafael Bridge
Completed in 1956, the 5.5 mile long bridge sits between two fault lines in the San Francisco Bay. The bridge connects the cities of Richmond and San Rafael as part of Interstate 580. Photograph courtesy of California Department Transportation
Site Location
Richmond/San Rafael Bridge
San Francisco
Project Hierarchy Date bid:
August 08, 1999 Owner:
California Department of Transportation General Contractor: A t Venture of
Tutor Saliba/Koch/Tidewater
Prime Subcontractor:
AGRA Foundations, Inc.
AGRA’s Scope of Work 66” Dia. CIDH Piles 150” Dia. CIDH Piles Substructure Micropiles Superstructure Micropiles
Substructure Micropiles Pile Data Micropiles This table represents 31 pier locations with 476 production piles and 5 performance piles. Load range from 290 kips to 1140 kips
Substructure Micropile
Note Spirals at base of pile and rings at Micropile top (inside the bell)
Typical
CRIP
Prerequisites to Micropiles
Work Platforms
Micropile Installation Templates Templates were constructed to accurately locate the micropiles
Hinge Locations
Micropile Installation Templates Template Connector
Completed Templates and Conductor Casing
Templates in place on Bridge
Micropile Installation Foundation Bell
Pipe Reinforcement Conductor Casing
Steel Bell Casing
14” Dia. Cored Hole Rubber Seat with Groves
Mud line Seal
Coring Bed Rock Permanent Steel Casing
Grooving Bedrock Socket
Pipe placed from Bell bottom of bell and socketted into bedrock (not shown) 12” Dia.
Geological Description The Franciscan Formation is a heterogeneous unit of sedimentary and volcanic rock deposited in an offshore, deep-marine trough at the base of the continental slope. The formation consists of massive graywacke sandstone, dark shale, minor chert and limestone, altered volcanic rock, and various metamorphic rocks. All of the rock is intruded by serpentine. The Franciscan Formation is believed to be as thick as 50,000 feet and typically found as fault-bound blocks accreted onto the western shoreline of California by plate movement .
Bed Rock Topographic Contours
Log of Test Bore
Working Drawing Load Capacity Calculations
Micropile Testing
Micropile Testing
Load Test Result Summary
Construction Methods
Visit us at www.agrafoundations.com or AGRA by email at [email protected]
Richmond/San Rafael Bridge
HIGH CAPACITY MICROPILE CONSTRUCTION
Richmond/San Rafael Bridge
Completed in 1956, the 5.5 mile long bridge sits between two fault lines in the San Francisco Bay. The bridge connects the cities of Richmond and San Rafael as part of Interstate 580. Photograph courtesy of California Department Transportation
Site Location
Richmond/San Rafael Bridge
San Francisco
Project Hierarchy Date bid:
August 08, 1999 Owner:
California Department of Transportation General Contractor: A t Venture of
Tutor Saliba/Koch/Tidewater
Prime Subcontractor:
AGRA Foundations, Inc.
AGRA’s Scope of Work 66” Dia. CIDH Piles 150” Dia. CIDH Piles Substructure Micropiles Superstructure Micropiles
Substructure Micropiles Pile Data Micropiles This table represents 31 pier locations with 476 production piles and 5 performance piles. Load range from 290 kips to 1140 kips
Substructure Micropile
Note Spirals at base of pile and rings at Micropile top (inside the bell)
Typical
CRIP
Prerequisites to Micropiles
Work Platforms
Micropile Installation Templates Templates were constructed to accurately locate the micropiles
Hinge Locations
Micropile Installation Templates Template Connector
Completed Templates and Conductor Casing
Templates in place on Bridge
Micropile Installation Foundation Bell
Pipe Reinforcement Conductor Casing
Steel Bell Casing
14” Dia. Cored Hole Rubber Seat with Groves
Mud line Seal
Coring Bed Rock Permanent Steel Casing
Grooving Bedrock Socket
Pipe placed from Bell bottom of bell and socketted into bedrock (not shown) 12” Dia.
Geological Description The Franciscan Formation is a heterogeneous unit of sedimentary and volcanic rock deposited in an offshore, deep-marine trough at the base of the continental slope. The formation consists of massive graywacke sandstone, dark shale, minor chert and limestone, altered volcanic rock, and various metamorphic rocks. All of the rock is intruded by serpentine. The Franciscan Formation is believed to be as thick as 50,000 feet and typically found as fault-bound blocks accreted onto the western shoreline of California by plate movement .
Bed Rock Topographic Contours
Log of Test Bore
Working Drawing Load Capacity Calculations
Micropile Testing
Micropile Testing
Load Test Result Summary
Construction Methods
Visit us at www.agrafoundations.com or AGRA by email at [email protected]
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