Please post your answer to Worked Example 3.2 here

GROUP 4

In summary,

Settling depth (m)= 0.6
Sediment storage depth (m)= 0.69
Riser head (m)= 0.3
Spillway head (m)= 0.6
Total basin depth including the spillway is (m)= 2.19

Adopt 5 rows of 10 x25mm offices evenly spaced around the pipe at height increment of 250mm, starting at the bottom of the pipe.

Overall Basin Dimensions:

Wtwl (m)= 26
Ltwl (m)= 118
Base:
Wb (m)= 21
Lb (m)= 113