a) A dam $6\text{ m}$ high and $1.5\text{ m}$ wide at the top has ver…

Question

a) A dam $6\text{ m}$ high and $1.5\text{ m}$ wide at the top has vertical water face. Find the base width of the dam if no tension is to develop. Take unit weight of masonary as $20\text{ kN/m}^3$ and $c=1$. Investigate the stability of the dam if the coefficient of friction is 0.6 and maximum allowable compressive stress is $1600\text{ kN/m}^2$. (10)

b) What is most economical central angle for a constant radius arch dam and obtain expression for the same. (10)