Example $1\mathrm{.}2$

Figure shows a concrete

gravity dam. Neglecting

earthquake and silt deposit

effect calculate

$(1)P_T$ and $P_H$

$(2)$ Major principal stress at toe

$()$

$(3)$ Shear stress on a horizontal

plane near toe.

$($Unit weight of concrete $(g=)=23\mathrm{.}5K\frac{N}{m^3},$ Take unit length of dam and

Allowable stress in concrete $=2500K\frac{N}{m^3}$