Publication Abstract

Proceedings - Fourth International Conference - Piling and Deep Foundations, 1991, Stresa, Italy, (DFI)

18 Post Office Square Garage, Boston, USA: A Challenging 'Top Down' Project in a Congested Urban Area
A. Ressi di Cervia; ICOS Corporation of America, Englewood, N.J. G.J. Tamaro; Mueser Rutledge Consulting Engineers, N.Y.

The paper discusses the construction of an underground garage in downtown Boston built by the 'top down' method. The irregular shared perimeter of the site is bounded by a diaphragm wall. Foundations for interior columns, were built from the surface by diaphragm wall methods. The advantages of using a consistent construction technique in a tight urban site are discussed. Technical and economical justifications for the selection of the method are sited. The paper describes how the diaphragm wall method was integrated with the requirements of the project in order to provide a permanent structural load bearing, waterproof wall and a system of load bearing elements which provided both temporary and permanent support of the interior structural framing, yielding a fast and economical solution to a difficult construction problem.

 article #458; publication #37 (IC-1991-IT)