Problem: Calculate the peak discharge $($surface runoff$)$ into inlet Pits from each subarea for the given catchment in Brisbane for your project. ARI for the selected catchment and sub$-$area dimensions are given below.

a $=155$ m

b $=80$ m

c $=110$ m

d $=50$ m $+$

$10$I$1=35\mathrm{.}41$ mm$/$hr

ARI $=1$:$5$ years $($minor$)$

$($i$)$ Calculate discharge and pipe diameter for each component of the catchment

Determine surface run$-$off to Pit A$,$ surface run$-$off from the parkland and gutter diameter for the parkland