a$)$ Design a continuous flushing type settling basin with design discharge of $30\frac{m^3}{s}$ where the particles below $0\mathrm{.}15mm$ are to be removed. The settling velocity of the particles is $1\mathrm{.}5c\frac{m}{s}.$ The desired efficiency of settling basin is $95\%.$ Draw the plan and section showing dimensions.

b$)$ What is energy dissipating structure? What types of basin are proposed $7$ for different tail water conditions?