Session Start Date

5-6-1984

Abstract

An unusual case history of a condominium apartment building, originally designed for eleven storeys, to which four additional floors were added after the footings had already been constructed and was successfully completed to fifteen storeys in height . The use of rather high soil-bearing values, from 7 ksf ( 350 kPa) in the original design to over 12 ksf ( 600 kPa) . The project site , underlain by erratic soil profiles containing layers of soft fine-grained soils to about 20 ft (6 m) below the surface, had been effectively improved with an intense application of the Dynamic Precompression Treatment (OPT) . A historical background of the OPT and extensive general and specific details of the implementation of this technique are presented together with selection of design parameters, results of conventional in-situ testing and non-conventional stress-strain tests for determination of soil compressibility moduli. Stress settlement analyses and settlement records are also provided.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

First Conference

Publisher

University of Missouri--Rolla

Publication Date

5-6-1984

Document Version

Final Version

Rights

© 1984 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 6th, 12:00 AM

Dynamic Precompression Treatment - A Case History

An unusual case history of a condominium apartment building, originally designed for eleven storeys, to which four additional floors were added after the footings had already been constructed and was successfully completed to fifteen storeys in height . The use of rather high soil-bearing values, from 7 ksf ( 350 kPa) in the original design to over 12 ksf ( 600 kPa) . The project site , underlain by erratic soil profiles containing layers of soft fine-grained soils to about 20 ft (6 m) below the surface, had been effectively improved with an intense application of the Dynamic Precompression Treatment (OPT) . A historical background of the OPT and extensive general and specific details of the implementation of this technique are presented together with selection of design parameters, results of conventional in-situ testing and non-conventional stress-strain tests for determination of soil compressibility moduli. Stress settlement analyses and settlement records are also provided.