Orifice Outlet Control

Pre-development peak runoff rate

cms

Water surface elevation at design volume

m

Elevation of centroid of orifice opening

m

Orifice Coeficient

Result

Area of Orifice, Ao

m²

images

qpb - Pre-development peak runoff rate

Es - Water surface elevation at design volume

Eo - Elevation of centroid of orifice opening

C - Orifice Coeficient

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