Sanitary Sewer Pipe Design.

A$.$ Determine minimum theoretical pipe diameter required if the pipe could be made in any size. Hint: Calculate this based on the continuity equation for the peak hour flow condition with the assumption that the pipe is flowing full.

B$.$ Select an appropriate commercially available pipe size that meets code requirements.

C$.$ Determine the pipe slope needed based on the assumption that the pipe is flowing full at peak flow condition.

D$.$ The invert elevation of the new sewer pipe at the upstream end $($at the new development$)$ is $365\mathrm{.}12$ feet above datum. As a preliminary estimate calculate the pipe$$s invert elevation at the downstream end of the new pipe $($at the location of the existing wastewater collection pipe system; see reference information below for the distance that the pipe will need to convey the flow$).$ Assume gravity flow and that the pipe is straight and continuous for the calculation.

E$.$ Regarding the previous question, state why the pipe would not be continuous in the final design.

F$.$ If the elevation of the new pipe at the downstream end is below the elevation of the existing wastewater collection pipe, what can be done to remedy this problem?

Reference Information:

$$ Pipe length: $0\mathrm{.}745$ miles

$$ Pipe material: Ductile Iron

$$ Standard pipe diameters: $4,5,6,$ and larger sizes in $2-$inch increments.