Manning Formula - Flow in Partial Full Pipes
In SI system:
(SI System)
where:
Q - Flowrate (m3/s);
A - Section area (m2);
R - Hydraulic radius (m);
V - Velocity (m/s);
n - Manning roughness coefficient;
S - Slope
Q - Flowrate (m3/s);
A - Section area (m2);
R - Hydraulic radius (m);
V - Velocity (m/s);
n - Manning roughness coefficient;
S - Slope
In USC system:
(USC System)where:
Q - Flowrate (ft3//s);
A - Section area (ft2);
R - Hydraulic radius (ft);
V - Velocity (ft/s);
n, S - Same as above;
Q - Flowrate (ft3//s);
A - Section area (ft2);
R - Hydraulic radius (ft);
V - Velocity (ft/s);
n, S - Same as above;
(SI System)
where:
D - Hydraulic radius (m);
dn - normal depth (m);
Q - Flowrate (m3/s);
n, S - Same as above;
(USC System)
D - Hydraulic radius (m);
dn - normal depth (m);
Q - Flowrate (m3/s);
n, S - Same as above;
(USC System)
where:
D - Hydraulic radius (ft);
dn - normal depth (ft);
Q - Flowrate (ft3/s);
n, S - Same as above;
D - Hydraulic radius (ft);
dn - normal depth (ft);
Q - Flowrate (ft3/s);
n, S - Same as above;