Need to do part $($ii$)$

Question $4(65$ marks$)$

a$.$ A rural stormwater channel requires a culvert design $($only one RCBC configuration needs to be fully documented, DO NOT CALCULATE RCP configurations$).$ The channel is approximately $4m$ wide and may require multiple boxes where you have a wide range of RCBC$\text{'}$s on hand.

$($i$)$ Calculate an RCBC configuration and fully document your answer $(40$ marks$).$ The following design data has been provided:$($ii$)$ Using your design from part $($i$),$ justify the design and pipe selection for channel width, tailwater, headwater, scour protection, governing control or any other specific factors that would be advantageous for design and construction. $(25$ marks$)($Total $65$ marks$)$