Chapter $4$: Forces Due to Static Fluids

Problem $4$: $($Franzini Problem $3\mathrm{.}14$ p $99)$ A gravity dam is shown below. Draw the free body diagram of all the forces and their locations before solving the problem.

a$)$ What is the minimum width, b$,$ necessary to keep the rectangular masonry wall from sliding if it weighs $160$ pcf and the coefficient of static friction is $0\mathrm{.}45?$

b$)$ What is the minimum width, $b,$ required to be safe against an overturning moment?

Answer:

a$)3\mathrm{.}7ft$ minimum width

b$)3\mathrm{.}3ft$ minimum width