Accession Number:

AD0731111

Title:

Precompression for Improving Foundation Soils,

Descriptive Note:

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s):

Report Date:

1969-06-01

Pagination or Media Count:

94.0

Abstract:

The precompression technique is a highly effective and economical means for improving subsoils beneath structures and embankments. However, it often requires considerable time, from months to a year or more, and its possible use must be anticipated during planning stages of a project. Precompression is not well suited where local concentrated loadings are high. Precompression is an effective means for eliminating, in advance of construction of structures or roads, primary consolidation and a portion of secondary compression that is avoided by precompression can be estimated reasonably well, and the surcharge fill designed to reduce remaining secondary compression settlements to tolerable amounts. Observations and confirmation of design assumptions during construction should be regarded as an essential extension of the design phase. The combined problems of stability, settlement magnitude, and time rate, and of postconstruction settlements from secondary compression make precompression design about as demanding as any problem normally encountered in foundation engineering. Author

Subject Categories:

  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE