Date of Award:
5-1987
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Civil and Environmental Engineering
Department name when degree awarded
Agricultural and Irrigation Engineering
Committee Chair(s)
L. S. Willardson
Committee
L. S. Willardson
Committee
F. Kiefer
Committee
K. Stutler
Committee
W. R. Walker
Committee
Jack Keller
Abstract
The presence of moisture in the soil reduces its shear strength. After the rain or snowmelt, the high percentage of moisture in the subgrade of highway, causes the instability resulting into failure of the highway due to high water table. Therefore, it is essential to install a drainage system to remove the excess moisture from the subgrade of highways to avoid its failure.
In the present study, six different soil samples have been studied to observe its failure by triaxial shear strength and corresponding moisture content was noted. The tension applied to remove moisture was converted to equivalent drain depth. The relationships were studied between shear strength versus drain depth and moisture content versus drain depth. From these relationships the design drain depth for different types of soils studied was recommended. The present study also suggest that the design drain depth for the highways can be approximated directly using water retention curve.
Checksum
a9c7e5f166998a94fd697d4a4c9df081
Recommended Citation
Al-Himdani, Mizher, "Highway Drain Depth and Soil Stability" (1987). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 4644.
https://digitalcommons.usu.edu/etd/4644
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