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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: 1200mm
  • Downstream transition: 600mm
  • Inlet depression: 70mm
  • Barrier Kerb and channel- 300mm
  • Extended apron-300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 1200mm
  • Downstream transition: 600mm
  • Inlet depression: 70mm
  • Barrier Kerb and channel- 300mm
  • Extended apron-300mm
  • Crossfall: 3%

Pictures & drawings of test

With deflectors

Capture Curves

 Notes:

  • Double Bay (1900mm)
  • With deflectors
  • Upstream transition: 1200mm
  • Downstream transition: 600mm
  • Inlet depression: 70mm
  • Barrier Kerb and channel- 300mm
  • Extended apron-300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 1200mm
  • Downstream transition: 600mm
  • Inlet depression: 70mm
  • Barrier Kerb and channel- 300mm
  • Extended apron-300mm
  • Crossfall: 3%

Pictures & drawings of test

Sag

Capture curve

Notes:

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 1200mm
  • Downstream transition: 600mm
  • Inlet depression: 70mm
  • Barrier Kerb and channel- 300mm
  • Extended apron-300mm
  • Crossfall: 3%