CULVERT ANALYSIS RESULTS
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Solver: HY-8 / HDS-5 | Culvert: Circular | Material: Concrete
Design discharge: 2.400 m³/s | Barrels: 1
Inlet station/elevation: 0.000 m / 1268.130 m
Outlet station/elevation: 7.350 m / 1267.161 m
Calculated culvert length: 7.350 m
Design-flow inlet-control HW: 1.319 m
Design-flow outlet-control HW: 0.260 m
Governing control: Inlet
Governing headwater: 1.319 m above inlet invert
Headwater ratio HW/D: 2.199
Outlet velocity per barrel: 5.180 m/s
Culvert discharge at design flow: 0.768 m³/s
Roadway overtopping discharge: 1.632 m³/s
Roadway crest elevation: 1269.315 m
HY-8 flow type: 5-S2-n
Profile class: Steep
Exit loss at design flow: 0.376 m
HY-8 outlet option: Profiles | Exit loss: Standard
HW/D design benchmarks: 1.2D and 2.0D

HY-8 / HDS-5 Stage 2 uses the Appendix A inlet-control polynomial and the selected exit-loss method. The larger independently calculated inlet- and outlet-control headwater governs.