Solve a and b 15 A slope 60 ft high has a face inclination of 30°.Uniform soils comprise the slope and foundationzone and have a unit weight of 115 pcf, an angleof internal friction of 25°, and a cohesion of 400psf. Use the Taylor stability charts for totalstress analysis to:(a) Determine the slope factor of safety inregard to soil cohesion only.(b) Determine the slope factor of safety in re-gard to both cohesion and angle of internalfriction. (Hint: Use a trial-and-error proce-dure by assuming a value for the FS toapply to o, obtain a value for N, thencompare the assumed FS with the formula-calculated FS.)

Answered: 15 A slope 60 ft high has a face…

15 A slope 60 ft high has a face inclination of 30°. Uniform soils comprise the slope and foundation zone and have a unit weight of 115 pcf, an angle

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter13: Slope Stability

Section: Chapter Questions

Problem 13.6P

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Solve a and b

15 A slope 60 ft high has a face inclination of 30°.
Uniform soils comprise the slope and foundation
zone and have a unit weight of 115 pcf, an angle
of internal friction of 25°, and a cohesion of 400
psf. Use the Taylor stability charts for total
stress analysis to:
(a) Determine the slope factor of safety in
regard to soil cohesion only.
(b) Determine the slope factor of safety in re-
gard to both cohesion and angle of internal
friction. (Hint: Use a trial-and-error proce-
dure by assuming a value for the FS to
apply to o, obtain a value for N, then
compare the assumed FS with the formula-
calculated FS.)

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