The silt pressure( Ps) exerted on a gravity dam is given by ( Where үs = submerged unit weight, ɸ = angle of internal friction, and hs =The height to which the silt is deposited)
1
\({P_s} = \frac{1}{3}Ys \cdot h_s^2 \cdot \frac{{1 - \sin \phi }}{{1 + \sin \phi }}\)
2
\({P_s} = \frac{1}{2}Ys \cdot h_s^2 \cdot \frac{{1 - \sin \phi }}{{1 + \sin \phi }}\)
3
\({P_s} = \frac{1}{2}Ys \cdot h_s^3 \cdot \frac{{1 - \sin \phi }}{{1 + \sin \phi }}\)
4
\({P_s} = \frac{1}{2}Ys \cdot h_s\cdot \frac{{1 - \sin \phi }}{{1 + \sin \phi }}\)