2.5.3 Sizing of Outlet Openings

Outlet velocity through the openings = 2.5 Ft /s
Total Openings Area = 4.452 Sft
Size of openings = 8” x 8”
Area of each opening = 0.44 Sft
No of openings = 4.452 / 0.44
= 10
Provide 10 openings each of size 8 “x 8” in the inlet pipe and the concrete wall.