Natural and Built Environments Research Centre

City of Onkaparinga

Inlet Type:
Double Bay (1900mm)

On-grade

Without deflectors

Capture Curves

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%

Picture of tests

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

Grade 0.25% & flow 54l/s

Grade 0.25% & flow 54l/s
Grade 0.5% & flow 51l/s

Grade 0.5% & flow 51l/s
Grade 4% & flow 70l/s

Grade 4% & flow 70l/s

Inlet drawing details

inlet drawing details

With deflectors

Capture Curves

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%

Picture of tests

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

Grade 0.25% & flow 54l/s

Grade 0.25% & flow 54l/s
Grade 0.5% & flow 51l/s

Grade 0.5% & flow 51l/s
Grade 4% & flow 70l/s

Grade 4% & flow 70l/s

Inlet drawing details

inlet drawing details

Sag

Capture curve

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%

Areas of study and research

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