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Road Stormwater Drainage Inlets: Hydraulic Study

With deflectors

Single bay (900mm) & Transition (600mm)

Capture Curves

Notes:

  • Single Bay (900mm)
  • With deflectors
  • Upstream transition: 600mm
  • Downstream transition: 600mm
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equation

Notes:

  • Single Bay (900mm)
  • With deflectors
  • Upstream transition: 600mm
  • Downstream transition: 600mm
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Double bay (1900mm) & Transition (1500mm)

Capture Curves

Notes:

  • Double Bay (1900mm)
  • With deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 600mm
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm Crossfall: 3%

Curve Equations

Q = aXb+cX+d

capture equations

Notes:

  • Double Bay (1900mm)
  • With deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 600mm
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Double bay (1900mm) & Transition (600mm)

Capture Curves

Notes:

  • Double Bay (1900mm)
  • With deflectors
  • With 600mm upstream and downstream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes:

  • Double Bay (1900mm)
  • with deflectors
  • with 600mm upstream & downstream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Without deflectors

Single bay (900mm) with & without 600mm transition

Capture Curves

Notes:

  • Single Bay (900mm)
  • without deflectors
  • with and without 600mm upstream & downstream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

curve equations

Notes:

  • Single Bay (900mm)
  • without deflectors
  • with and without 600mm upstream & downstream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Double bay (1900mm) with 600mm transition

Capture Curves

Notes:

  • Double Bay (1900mm)
  • without deflectors
  • without 600mm up/down stream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes:

  • Double Bay (1900mm)
  • without deflectors
  • with 600mm upstream & downstream transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Double bay (1900mm) without transition

Capture Curves

Notes:

  • Double Bay (1900mm)
  • without deflectors
  • without transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes:

  • Double Bay (1900mm)
  • without deflectors
  • without transition
  • Inlet depression: 40mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Sag

Single Pit (900mm)

Capture curve

Notes:

  • Inlet Type Single Bay (900mm)
  • No Deflectors
  • 1500mm Transition
  • 3% crossfall
  • Barrier Kerb and channel: 300mm

Pictures & drawings of test