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Design of Caissons on Granular-Cohesive Soils / W. S. Housel

Conference Author
Performance of Deep Foundations (1968 : San Francisco, Calif.)
Published
West Conshohocken, Pa. : ASTM International, 1969.
Physical Description
1 online resource (22 pages) : illustrations, figures, tables
Additional Creators
Housel, W. S., American Society for Testing and Materials, and ASTM International
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Summary
This paper presents procedures developed for designing caissons bearing on highly consolidated soil mixtures having both granular and cohesive characteristics. The ultimate bearing capacity of these materials approaches that of rock, but testing and design procedures for soil are applicable. Several hundred static loading tests on bearing piles made over the past 20 years have demonstrated that highly consolidated soils will carry loads up to the crushing strength of the sand and gravel particles without displacement. Their ultimate bearing capacity ranges up to several hundred tons per square foot considerably in excess of nominal bearing capacity normally used on rock. These piles have been driven to practical refusal, all but eliminating consolidation settlement which is a controlling factor in caissons. Lacking the opportunity for preconsolidation of the bearing materials, caisson design consequently is limited to the preconsolidation or initial strength of the soil support well below the ultimate capacity available to driven bearing piles. Preliminary design incorporated in plans and specifications for bidding purposes is based on the results of borings and laboratory tests with standard field penetration used as the basic control. The final design is made in the field at the time of construction when bell diameters are adjusted to the field penetration taken at the bottom of the caisson. The field and laboratory testing is described briefly. A general expression for bearing capacity is developed in terms of internal stability and cohesion of soil mixtures. Design charts for rapid determination of bearing capacity in situ and for the selection of final bell sizes are explained.
Dates of Publication and/or Sequential Designation
Volume 1969, Issue 444 (January 1969)
Subject(s)
Other Subject(s)
ISBN
9780803169012 (e-ISBN)
9780803166448
0803166443
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 10.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1969. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
Source of Acquisition
ASTM International PDF Purchase price USD25.
View MARC record | catkey: 28007670