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Healthcare

Hershey Medical Center Centerview Parking Garage Phase II

Hershey, PA

DESCRIPTION

The Phase II project consisted of a six-level, 935-car precast concrete addition to the Centerview Parking Garage.

CHALLENGE

Soil conditions at the project site consist of a medium dense silty sand and sandy silt underlain by pinnacled limestone bedrock ranging in depth from 1 ft below First Floor Elevation (FFE) to more than 140 ft.  The major challenge was to improve soil bearing capacity, provide settlement compatibility with the existing micropile-supported P1 parking garage, and prevent surface water infiltration into shallow pinnacled bedrock areas without project cost overruns.

SOLUTION

A total of 400 high capacity and high modulus Geopier® elements were installed using Cement Treated Aggregate (CTA).  The CTA consisted of 2A aggregate with five percent cement added on site.  A comprehensive lab test program was conducted to verify the strength of CTA and provide quality control tests during installation of the Geopier elements.

Owner

Penn State Milton S. Hershey Medical Center - Hershey, PA

Construction Manager

Alexander Building Construction Company - State College, PA

General Contractor

Shoemaker Building Construction - Conshohocken, PA

Structural Engineer

Walker Parking Consultants - Philadelphia, PA

Geotechnical Engineer

CMT Laboratories - State College, PA

Product

Geopier GP3® System

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