For Questions A and B a temporary earth support wall is supporting a 25 ft excavation. A. Neatly draw the active soil pressure diagram, based on Rankine Theory, behind the wall and show the maximum pressure at the bottom of the temporary wall after completion of the excavation. Also indicate the location of the theoretical slip (failure) plane and its angle from the vertical. The soil is a saturated clay with properties as follows: gsat = 132 pcf, f = 19o c = 450 psf B. Use table 5.5 in the textbook and repeat problem 2 for a medium-dense gravely-sand with the following properties shown on the table: gin-situ = 120 pcf, f = 34o c = 0 psf
For Questions A and B a temporary earth support wall is supporting a 25 ft excavation.
A. Neatly draw the active soil pressure diagram, based on Rankine Theory, behind the wall and show the maximum pressure at the bottom of the temporary wall after completion of the excavation. Also indicate the location of the theoretical slip (failure) plane and its angle from the vertical. The soil is a saturated clay with properties as follows:
gsat = 132 pcf, f = 19o c = 450 psf
B. Use table 5.5 in the textbook and repeat problem 2 for a medium-dense gravely-sand with the following properties shown on the table:
gin-situ = 120 pcf, f = 34o c = 0 psf
Given:
Height of temporary Wall (H)= 25ft
Case 1: gsat = 132 pcf, f = 19o c = 450 psf
Case 2: gin-situ = 120 pcf, f = 34o c = 0 psf
To Find:Maximum pressure at the bottom of the temporary wall after completion of excavation.
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