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a. VÀ granular soil has a saturated unit weight of 18.0 kN/m³ and an effective angle of shearing resistance of 30°. A slope is to be made of this material. If the factor of safety is to be 1.25, determine the safe angle of the slope: (i) when the slope is dry and (ii) if seepage occurs at and parallel to the surface of the slope.

a. VÀ granular soil has a saturated unit weight of 18.0 kN/m³ and an effective angle of shearing resistance of 30°. A slope is to be made of this material. If the factor of safety is to be 1.25, determine the safe angle of the slope: (i) when the slope is dry and (ii) if seepage occurs at and parallel to the surface of the slope.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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a. VA granular soil has a saturated unit weight of 18.0 kN/m³ and an effective angle of shearing resistance of 30°. A slope is to be made of this material. If the factor of safety is to be 1.25, determine the safe angle of the slope: (i) when the slope is dry and (ii) if seepage occurs at and parallel to the surface of the slope. b. The factor of safety of a clay slope and the indicated slip circle shown in Figure Qu. 5 is considered inadequate. In order to increase the factor, the slope is to be altered by removing the shaded part of the slope. Determine the percentage increase in the factor of safety after 3 of 6 this alteration. It is known that: Area of section before alteration = 38.7 m²; Centroid of the entire section is at G; soil density is 1885 kg/m³; cu = 20 kN/m². 9m radius 90 3.3m To be removed Gm 1.5m 3m 3.2m 45 o Ou5
Transcribed Image Text:a. VA granular soil has a saturated unit weight of 18.0 kN/m³ and an effective angle of shearing resistance of 30°. A slope is to be made of this material. If the factor of safety is to be 1.25, determine the safe angle of the slope: (i) when the slope is dry and (ii) if seepage occurs at and parallel to the surface of the slope. b. The factor of safety of a clay slope and the indicated slip circle shown in Figure Qu. 5 is considered inadequate. In order to increase the factor, the slope is to be altered by removing the shaded part of the slope. Determine the percentage increase in the factor of safety after 3 of 6 this alteration. It is known that: Area of section before alteration = 38.7 m²; Centroid of the entire section is at G; soil density is 1885 kg/m³; cu = 20 kN/m². 9m radius 90 3.3m To be removed Gm 1.5m 3m 3.2m 45 o Ou5
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