PROJECT INFORMATION
As one of America’s leading deep foundation specialists, Case Foundation Company has the resources and experience you need for the performance you expect. And although you may never see our best work, you will have the confidence of knowing that we have been there, working from the ground down to ensure structural performance from the ground up.
A.S. King Power Plant: Bayport, MN
Augered Cast-in-place piling overcome adverse soil conditions at a power plant addition.
The soils beneath a 560 megawatt coal fired power plant located in Stillwater, Minnesota consisted of sands, gravel, cobbles and peat layers overlying weak sandstone bedrock. Continuous flight augers advanced through this 20’ of overburden soils and then went 22’ into the sandstone to form 44’-0” piles. A total of 750 piers, carrying 400k ea were installed to support an upgrading of the plants Air Quality Control System (AQCS).
Construction Manager: Lunda Construction Company
Engineer: Black & Veatch |
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Block 37: Chicago, IL
Case Foundation Company’s full complement of deep foundation services anchor major commercial development in the heart of downtown Chicago.
When construction began on a long neglected square block in Chicago’s Loop, Case met the challenge of this complex and fast-tracked project. 65,000 sf of 36” thick slurry wall surrounded the underground parking garage and also provided access for a new CTA rail line; secant pile walls protected adjacent streets and structures; and 144 caissons – both rock and hardpan – supported the high rise structures. Finally, structural steel column sections placed in selected caissons enabled the top-down construction program to proceed.
Construction Manager: W.E. O’Neil
Architect: Gensler/Perkins & Will
Engineer: Thornton Tomasetti
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Elm Road Generating Station: Oak Creek, Wisconsin
Record-setting offshore shafts provide a key element in a cooling water intake system
Four shafts – lined with 12 ft. diameter steel casing - located 1.5 miles offshore, now connect Lake Michigan water to a 27 ft. diameter rock tunnel supplying 2 billion gal/day to a new power plant expansion. Guided and supported by fixed platforms in 45’ of water, the shafts penetrated through glacial soils and limestone bedrock to connect with the tunnel 105 ft. below lake bed. Excavation of the 14’-6” diameter rock shafts utilized the largest reverse circulation drill ever used for this purpose in North America.
Owner: We Power
Construction Manager: Bechtel Power Corporation
Tunnel Contractor: Kenny Construction Company
Intake System Engineer: Hatch, Mott Engineers
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Four Seasons Hotel & Tower: San Francisco, CA
Concrete diaphragm (slurry) walls provide watertight basement walls and permanent support for a 60’ deep parking garage in downtown San Francisco.
Case’s prime contract with the Project Management team included both the initial site preparation services – removal of old building foundations and tie-back anchors intersecting the wall alignment – and a new 36” thick slurry wall extending to depths of 125’. Temporary support was later provided by internal bracing and tie-back anchors. With a wall surface area of 120,000 sf., this project is currently the largest commercial application of slurry wall construction in California.
Developer: Millennium Partners
Construction Manager: Bovis Construction Corporation
Engineer: DiSimone Consulting Engineers
Architect: Gary E. Handel & Associates
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Long Park Dam Remediation Project: Daggett County, Utah
Lead-mounted downhole hammer installs cut-off wall on steep slope of dam abutment.
The secant pile method was utilized for construction of a seepage cutoff wall in fractured rock beneath a dam in a remote and high altitude location in Utah. Hard rock formations and a 23° sloping work surface created a unique challenge for installation of 28,000 sf. of wall to depths of 60’. A 20” diameter downhole hammer, drilling overlapping holes, aided by a unique control and monitoring systems, produced a continuous 8” thick concrete wall.
Owner: Sheep Creek Irrigation Authority
Consultant: URS Greiner Woodward Clyde
Contractor: Empire Sand & Gravel, Billings, MT
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River East Center: Chicago, Illinois
Case’s specialty construction services combine to launch, top-down/construction of a major mixed-use project in downtown Chicago.
The size of this two city block site allowed installation of a 1,600 lf concrete diaphragm slurry wall to 70’, while 143 large diameter belled caissons were being drilled to depths of 100’. Extension and encasement of the upper caisson shafts set the stage for top/down construction. At the same time, a driven sheet pile cofferdam encircled the tower core where bottom-up construction of this time-critical area proceeded independently from the rest of the site work. Superstructure and substructure work then continued concurrently (up and down) achieving substantial cost and time savings.
Owner/Developer: MCL Companies
Construction Manager: AMEC (formerly Morse Diesel)
Architect: DeStefano & Partners
Engineer: Chris Stefanos & Association
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Trump Tower: Chicago, Illinois
Trump Tower rises on 230 caissons – both rock bearing and hardpan – installed on a narrow footprint along the Chicago River.
State-of-the-art caissons provide support for a 92 story highrise tower. The 57 core caissons utilized a record breaking 500 ksf bearing capacity and relied on innovative techniques to drill rock sockets up to 10’ diameter. At many locations, concrete-filled bells of old hand-dug caissons were removed by coring to allow construction of the new shafts. Over 16,000 cy of concrete and 2,360 tons of steel reinforcement and casing was put in place in only 6 months.
Owner/Developer: Trump Organization
Construction Manager: Bovis Lend Lease
Architect/Engineer: Skidmore, Owings & Merrill
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