CE$4240$: Environmental Engineering Design

Homework Assignment #$8-$ Solution

Background information from Problem $17-23$ describing the Bastogne Retirement Center $($Figure P$-17-23).$

a$.$ Assume $210$ people.

b$.$ Average daily demand for the Center is $500$ Lped.

c$.$ Peaking factor for peak hourly flow is $6\mathrm{.}8.$

d$.$ Assume $0\mathrm{.}5$ km of $20$ cm sewer

e$.$ Assume $\frac{\text{I}}{\text{I}}$ of $40$ L $m{m}^{-1}k{m}^{-1}{d}^{-1}.$

I of lift station, pump, and

$e$ into forced main.

Q$1.(3$ points; Problem $19-15)$ Estimate the volume of the wet well for a lift station for wastewater flowing from the Bastogne Retirement Center $($Problem $19-11).$

Q$2.(9$ points$)$ Complete the sketch of the wet well cross$-$section and the associated table provided below. To receive full credit, the cross section must include:

a$.$ Sewer entering wet well $($with appropriate dimensions$/$depths$)$

b$.$ Pump inlet $($with appropriate dimensions$/$depths$)$

c$.$ Low water level

d$.$ High water level

$\backslash$table$[[$Parameter$,$Value,Unit$],[$Diameter$,,$m$],[$Area$,,m^2$