Question

The base width of an elementary profile of gravity dam of height H is b. The specific gravity of the material of the dam is G and uplift pressure coefficient is K. The correct relationship for no tension at the heel is given by

• A. $\frac{b}{H}=\frac{1}{\sqrt{G-K}}$
• B. $\frac{b}{H}=\sqrt{G-K}$
• C. $\frac{b}{H}=\frac{1}{G-H}$
• D. $\frac{b}{H}=\frac{1}{K\sqrt{G-K}}$

Answer 1

The correct option is A $\frac{b}{H}=\frac{1}{\sqrt{G-K}}$

For no tension at the heel,
$\frac{b}{H}=\frac{1}{\sqrt{G-K}}$

Note: For no sliding
$\frac{b}{H}=\frac{1}{\mu (G-K)}$
$\text{where}\mu =\text{coefficient of friction}$