Question

The base width of a solid gravity dam is 25 m. The material of the dam has a specific gravity of 2.56 and the dam is designed as an elementary profile ignoring uplift. What is the approximate allowable height of the dam?

• A. 64 m
• B. 40 m
• C. 164 m
• D. 80 m

Answer 1

The correct option is B 40 m

For elementary profile

$B=\frac{H}{\sqrt{S_C-C}}$

When uplift is ignored C = 0

$\therefore B=\frac{H}{\sqrt{S_C}}$

$OrH=25\times \sqrt{2.56}=40m$