Chapter
Apr 26, 2012
The Effects of Site Conditions on the Predicted Time Rate of Heave
Publication: Unsaturated Soils 2006
Abstract
This paper investigates the effect of various surface and subsurface site conditions on the predicted time rate of heave for expansive soils. A review of the migration of the wetting front for two project sites in the Denver Area is presented. Seepage analyses using VADOSE/W software (Geo-Slope, 2005) was conducted to evaluate the rate at which the wetting front will migrate under various boundary conditions. Heaving associated with change in water content of two soil profiles was computed to obtain the time rate of heave for these profiles. Poor grading and drainage are shown to have a large effect on the time rate of heave. The depth of wetting and its effect on the amount of heave to be expected in the lifetime of the structure are presented.
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© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Computer programming
- Computer software
- Computing in civil engineering
- Construction engineering
- Construction management
- Continuum mechanics
- Degrees of freedom
- Displacement (mechanics)
- Engineering mechanics
- Expansive soils
- Fine-grained soils
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Heave
- Project management
- Seepage
- Site investigation
- Soil mechanics
- Soil properties
- Soils (by type)
- Solid mechanics
- Structural mechanics
- Subsurface investigation
Authors
Affiliations
Kuo-Chieh Chao
P.E.
M.ASCE
Senior Geotechnical Engineer, MFG, Inc., 3801 Automation Way, Suite 100, Fort Collins, Colorado 80525
Daniel D. Overton
P.E.
M.ASCE
Senior Geotechnical Engineer, MFG, Inc., 3801 Automation Way, Suite 100, Fort Collins, Colorado 80525
John D. Nelson, Ph.D.
P.E.
F.ASCE
Professor, Colorado State University, Fort Collins, Colorado, 80521 and Corporate Consultant, MFG, Inc., 3801 Automation Way, Suite 100, Fort Collins, Colorado 80525
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