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.

Structural Analysis
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Chapter2: Loads On Structures
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Geotechnical

**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.
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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