Question

The maximum height of a low gravity dam of elementary profile made of concrete of relative density 2.5 and safe allowable stress of foundation material 3.87 MPa without considering uplift force is about

• A. 113 m
• B. 217 m
• C. 279 m
• D. 325 m

Answer 1

The correct option is A 113 m

The limiting height of a low concrete gravity dam without considering uplift force is given by

$H_{max}=\frac{f}{{\gamma }_w(G+1)}=\frac{3.87\times {10}^3}{9.81(2.5+1)}$

$=112.7m\underset{–}{\sim }113m$