CULVERT ANALYSIS RESULTS
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Solver: SANRAL | Culvert: Circular | Material: Concrete
Design discharge: 2.000 m³/s | Barrels: 1
Inlet station/elevation: 0.000 m / 0.000 m
Outlet station/elevation: 20.000 m / -0.100 m
Calculated culvert length: 20.000 m
Design-flow inlet-control HW: 1.418 m
Design-flow outlet-control HW: 1.532 m
Governing control: Outlet
Governing headwater: 1.532 m above inlet invert
Headwater ratio HW/D: 1.532
Outlet velocity per barrel: 2.546 m/s
Culvert discharge at design flow: 2.000 m³/s
Roadway overtopping discharge: 0.000 m³/s
Roadway crest elevation: 4.000 m
HY-8 flow type: —
Profile class: —
Exit loss at design flow: 0.331 m
HW/D design benchmarks: 1.2D and 2.0D
SANRAL circular discharge coefficient: C_D=0.600

SANRAL inlet control uses the Table 7.2 piecewise equations. The larger independently calculated inlet- and outlet-control headwater governs.