A California Tower: Response to Seismic Forces

by P. V. Banavalkar, CBM Engineers, Inc, Houston, United States,

Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation


First Interstate World Center is a signature building for the city of Los Angeles. The granite clad tower with its serrated facade rises 1,018 ft. above street level. It is the tallest office building in seismic zone 4 or its equivalent in the world. The tower, with step backs at floors 42,61, 69, and 73, is embellished ai its base by Spanish style steps and fountains. This paper describes the design criteria and the response of the structure to the ground motion imparted seismic forces.

Subject Headings: Seismic design | Ground motion | Seismic tests | Earthquake resistant structures | Seismic loads | Structural analysis | Wind loads | Commercial buildings | California | United States | Los Angeles

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