Caisson Construction Problems and Correction in Chicago

by Clyde N. Baker, Jr., (M.ASCE), Vice Pres.; Soil Testing Services, Inc., Northbrook, IL,
Fazlur Khan, (M.ASCE), Assoc. Partner; Owings & Merrill, Chicago, IL,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1971, Vol. 97, Issue 2, Pg. 417-440

Document Type: Journal Paper


The possible causes for defective caissons encountered during construction have been examined. These causes included excess water, soil inclusions, voids, change in caisson dimensions, inadequate bearing and poor concrete. Methods of exploration outlined are coring, caliper logging, inclinometer reading, side test pits, seismic wave and velocity measurement, 3-D logging, Gamma ray logging and probing for bells. Methods of correction and repair suggested include grouting, addition of steel in core holes, partial removal and replacement, complete removal and replacement and additional caissons with transfer girder. The importance of adequate inspection and safe construction procedures has been emphasized.

Subject Headings: Construction management | Caissons | Seismic tests | Wave measurement | Seismic waves | Wave velocity | Soil water | Voids | North America | Illinois | United States | Chicago

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