Reference Information:

$$ Pipe length: $0\mathrm{.}16$ miles

$$ Pipe slope: $0\mathrm{.}038$ ft$/$ft

$$ Pipe material: Concrete

$$ Minimum diameter: $12$ inches

$$ Standard diameters: $12,15,18,21,24,27,30,33,36,39,42,48,54,60,66,72,78,84,96$ in$.$

Assumption:

$$ The pipes flow full, even if pipe size selected is larger than the minimum diameter needed.

$$ Manning$$s$,$ n $=0\mathrm{.}019,$ or$,$ Hazen$-$Williams C $=90.$

A$.$ Calculate the minimum size $($inches$)$ needed to convey the peak flow; assume the pipe flows full. Use Hazen Williams or Manning$$s equation to solve for diameter. Draw a box around the answer.

B$.$ Select a suitable standard pipe size. Draw a box around the answer.