Foundations

Pump Station 4 Reconstruction

Pump Station 4 Reconstruction

Scope

Michels, one of the largest deep foundations contractors in North America, was contracted to design and install secant shafts as temporary earth retention to allow for the excavation of approximately 71 feet below grade to install a new pump station. There are a total of 110, 1.5m diameter secant shafts in a 145-foot-diameter ring. Each shaft is installed to top of rock (71 feet) with an additional 10 feet into rock.

Upon completion of the secant shafts, a single shaft will be installed in the center of the ring to dewater the site. Once IHC Construction Companies LLC has excavated to final grade, Michels will come back and install 54 rock anchors to stabilize the building. Each rock anchor will be approximately 28 feet deep.

Michels used a Liebherr 36 drill rig to install Leffer segmental casing to the top of rock. A second Liebherr 36 with a modified kelly bar to allow for the flow of air was used with a cluster drill to hammer out the rock sockets.

Following the rock drilling, the pour crew tremie-poured each shaft to the top of the casing and then pulled casing out of the ground with a 1.5 meter Leffer oscillator. Every other shaft has an 82-foot-long W36x232 beam installed in its center.

By installing a watertight secant pile shaft, the pump station can be constructed which will help prevent flooding along the interstate.

  • Michels was contracted to design and install secant shafts as temporary earth retention to allow for the excavation of approximately 71 feet below grade to install a new pump station.
  • There are a total of 110, 1.5m diameter secant shafts in a 145-foot-diameter ring. Each shaft is installed to top of rock (71 feet) with an additional 10 feet into rock
  • By installing a watertight secant pile shaft, the pump station can be constructed which will help prevent flooding along the interstate.

Projects

Michels built 458 secant piles and 100 caissons in 90 days for a 10-story, 600,000-square-foot building on the site of the new McDonald's corporate headquarters.

Deep Foundations

110 N Carpenter

Illinois

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110 N Carpenter

Deep Foundations

Yesler Terrace

Washington

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Yesler Terrace

Michels scope of work is to install 242 drilled shafts to support the piers for anew bridge. The installation of the drilled shafts was completed with the simultaneous use of up to four drill rigs. Utilizing barges, 233 drilled shafts were installed in the river. Michels crews also installed 7-foot and 10-foot permanent steel casing into bedrock for each shaft.

Deep Foundations

I-74 Mississippi River Bridge

Illinois

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I-74 Mississippi River Bridge

Michels installed 857 H-piles 60 feet deep to bedrock for a deep foundation system for the R1VER project, a mixed-use waterfront development.

Deep Foundations

R1VER

Wisconsin

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R1VER

Michels, one of North America's largest deep foundations contractors, built a secant pile structure for an underground power substation at the base of a multi-use building in the city's historic Third Ward.

Deep Foundations

Juneau Town Substation

Wisconsin

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Juneau Town Substation

Michels performed the removal and replacement of walkway and pier structures along the eastern extent of the De Pere Dam.

Deep Foundations

De Pere Dam Walkway Replacement

Wisconsin

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De Pere Dam Walkway Replacement

Quality means doing it right
when no one is looking.

Henry Ford

We do that.

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