Strut-and-Tie Design and Detailing of a Foundation Grade Beam

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Title: Strut-and-Tie Design and Detailing of a Foundation Grade Beam

Author(s): Leonard P. De Rooy, Timothy C. DenHartigh, and Robert B. Anderson

Publication: Special Publication

Volume: 273

Issue:

Appears on pages(s): 1-20

Keywords:

Date: 9/20/2010

Abstract:
This example illustrates strut-and-tie detailing techniques used to produce a practical and constructible design. Information presented herein is based on a 34 story post-tensioned concrete structure in Grand Rapids, Michigan that utilized deep concrete grade beams for its foundation system. The River House condominium project used over 1,900 cubic yards (1,400 cubic meters) of concrete and 380,000 lb (172,000 kg) of reinforcement for the grade beams alone. The grade beam illustrated in this example cantilevers over an existing caisson and a 60 in. (1,500 mm) brick sanitary sewer.