Performance of One Shell Plaza Deep Mat Foundation

by John A. Focht, Jr., (F.ASCE), Executive Vice Pres.; McClelland Engrs., Inc., Houston,
J. Peter Gemeinhardt, (M.ASCE), Vice Pres.; McClelland Engrs., S.A., Singapore,
Fazlur R. Khan, (F.ASCE), Part.; Skidmore, Owings & Merrill, Chicago, Ill.,

Serial Information: Journal of the Geotechnical Engineering Division, 1978, Vol. 104, Issue 5, Pg. 593-608

Document Type: Journal Paper


The mat foundation for One Shell Plaza is 172 ft x 232 ft (52.46 m x 70.76 m) in plan, 8.25 ft (2.52 m) thick and 60 ft (18.3 m) below street level. The mat was designed using an iterative analytical procedure to include the effects of soil-mat interaction in determining foundation movements. To provide factual information on soil-structure interaction, the mat was instrumented to measure soil contact pressures and steel stresses. In addition, observations were made to determine total and differential mat movements. Performance observations during the 3-yr construction period and for about 6 yr since the structural frame was completed are examined and then compared in a limited way with design predictions.

Subject Headings: Foundation design | Materials engineering | Deep foundations | Mat foundations | Soil-structure interaction | Soil pressure | Shopping centers | Streets

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