The gravity wall shown has been designed to resist overturning and sliding. The total vertical force component made up of the self-weight of the wall is 14 kips per unit length of wall. The approximate factor of safety against sliding is Cohesionless sand (backfill) y 109.1 pcf e= 150 psf - 27 (A) 1.1 12 ft (B) 1.6 mudline (C) 1.7 8 ft (D) 2.1 Hint: The active pressure of the backfill Is resisted by friction between the base of the wall and the soil.
The gravity wall shown has been designed to resist overturning and sliding. The total vertical force component made up of the self-weight of the wall is 14 kips per unit length of wall. The approximate factor of safety against sliding is Cohesionless sand (backfill) y 109.1 pcf e= 150 psf - 27 (A) 1.1 12 ft (B) 1.6 mudline (C) 1.7 8 ft (D) 2.1 Hint: The active pressure of the backfill Is resisted by friction between the base of the wall and the soil.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Geotechnical
Transcribed Image Text:**Gravity Wall Design for Safety Against Sliding**
The gravity wall shown has been designed to resist both overturning and sliding. The total vertical force component, comprising the self-weight of the wall, is 14 kips per unit length of the wall.
**Approximate Factor of Safety Against Sliding:**
- (A) 1.1
- (B) 1.6
- (C) 1.7
- (D) 2.1
**Diagram Explanation:**
The diagram depicts a cross-section of a gravity wall, which is 12 feet tall and has a base width of 8 feet. The wall is shown with an incline angle (δ) of 20° from the vertical. Behind the wall is a backfill composed of cohesionless sand with the following properties:
- Unit weight (γ) = 109.1 pcf
- Cohesion (c) = 150 psf
- Angle of internal friction (ϕ) = 27°
**Hint:**
The active pressure of the backfill is resisted by the friction between the base of the wall and the soil.
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