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Commercial

Capital One Headquarters – Post and Panel Wall

McLean, VA

Description

Construction of a 22 ft high retaining wall was needed to create a grade separation between the on-ramp for I-495 and the delivery entrance for the new Capital One Headquarters.

Challenge

The wall was originally designed as a cast in place concrete cantilever wall. Right-of-way and utility restrictions necessitated expensive shoring and spanning utilities with pilings since relocation was not feasible.

Solution

Introduction of a precast concrete Post and Panel retaining wall eliminated the shoring requirements and allowed utilities to pass beneath the wall unencumbered versus the cast in place wall which needed pile supported footings to span the utilities. Because of the large wall height concrete posts were chosen to limit wall deflection and maximize post spacing. The post and panel wall alternative saved both time and money for the owner versus the original cast in place wall.

Owner

Capital One

General Contractor

James G. Davis Construction

Architect

Perkins + Will

Structural Engineer

Rathgeber/Goss Associates Consulting Structural Engineers

Geotechnical Engineer

Engineering Consulting Services, Ltd

Product

Retaining Walls

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