Problem $1.$

Design a horizontal flow grit chamber to remove grit of size greater than $0\mathrm{.}2mm.$ The through flow is $10000\frac{m^3}{d},$ the specific gravity of particles is $1\mathrm{.}9\frac{g}{c}{m}^3,=1\mathrm{.}027**{10}^{-2}$ g$.s\frac{ec}{c{m}^2}.$ Assume the depth is $1\mathrm{.}5$ times the width.

Use Stoke law to determine the settling velocity

$v=\frac{g}{18}({}_s-)d^2$