Calculate outlet control hydraulics for culverts including headwater depth, outlet velocity, critical depth, normal depth, and head loss breakdown. Uses FHWA HDS-5 methodology for circular and box culverts.
| Inlet Type | Ke |
|---|---|
| Square edge with headwall | 0.50 |
| Groove end with headwall | 0.20 |
| Groove end projecting | 0.25 |
| Mitered to slope | 0.70 |
| Beveled edges | 0.25 |
| Side-tapered inlet | 0.20 |
| Slope-tapered inlet | 0.15 |
Source: FHWA HDS-5, Table 4-1
| Material | n |
|---|---|
| Concrete | 0.012 |
| Corrugated Metal (annular) | 0.024 |
| HDPE (smooth) | 0.012 |
| PVC (smooth) | 0.010 |
| Corrugated Metal (helical) | 0.012-0.024 |
| Stone Masonry | 0.025-0.030 |
Source: FHWA HDS-5, Table 3-3
Enter culvert parameters and click Calculate to analyze outlet control hydraulics.
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