Q. If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is (Solved)
1. h = (W/Aw)[(1 - )/(1 + sin )]
2. h = (W/Aw) [(1 + )/(1 + sin )]
3. h = (W/Aw) [(1 - )/(1 + sin )]²
4. h W/Aw) [(1 - )/(1 + sin )]²
- c. h = (W/Aw) [(1 - )/(1 + sin )]²