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Road Stormwater Drainage Inlets: Hydraulic Study

Inlet Type:
Double Bay (1900mm)

On-grade

Without deflectors

Capture Curves

Notes:

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 600mm
  • Downstream transition: 600mm
  • Inlet depression: 90mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 600mm
  • Downstream transition: 600mm
  • Inlet depression: 90mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Pictures of test

Longitudinal grade (%) with Approach flow (l/s)

Sag

Capture Curve

Notes

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 600mm
  • Inlet depression: 90mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%