City Mitcham

On-grade

Inlet Type:
Double Bay (1900mm), without Grate

Without deflectors

Capture Curves

capture curves

Notes:

  • Double Bay (1900mm)
  • Without deflectors
  • Upstream transition: 2000mm
  • Downstream transition: 2000mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Curve Equations

  Q = aXb+cX+d

curve equations

  Notes:

  • Double Bay (1900mm)
  • With no deflectors
  • Upstream transition: 2000mm
  • Downstream transition: 2000mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Picture of tests

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

Grade 2% & flow 170l/s

Grade 2% & flow 170l/s

Grade 6% & flow 120l/s

Grade 6% & flow 120l/s

With deflectors

Capture Curves

capture curves

Notes:

  • Double Bay (1900mm)
  • With deflectors
  • Upstream transition: 2000mm
  • Downstream transition: 2000mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Curve Equations

  Q = aXb+cX+d

curve equations

  Notes:

  • Double Bay (1900mm)
  • With deflectors
  • Upstream transition: 2000mm
  • Downstream transition: 2000mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Picture of tests

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

Grade 1% & flow 70l/s

Grade 1% & flow 70l/s

Grade 1% & flow 71l/s

Grade 1% & flow 71l/s

Grade 8% & flow 70l/s

Grade 8% & flow 70l/s

Drawing details

Drawing of inlet

Single Pit (900mm), with Grate

Capture Curve

capture curve

Notes:

  • Single pit (900mm)
  • With grate
  • Without deflectors
  • Without transition
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Capture Equation

  Q = aXb+cX+d

capture equations

Notes:

  • Single pit (900mm)
  • With grate
  • Without deflectors
  • Without transition
  • Inlet depression: 50mm
  • Kerb channel: 300mm 
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Picture of tests

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

Grade 0.5% & flow 26l/s

Grade 0.5% & flow 26l/s

Grade 0.5% & flow 73l/s

Grade 0.5% & flow 73l/s

Grade 2% & flow 49l/s

Grade 2% & flow 49l/s

Grade 4% & flow 29l/s

Grade 4% & flow 29l/s

Grade 12% & flow 120l/s

Grade 12% & flow 120l/sGrade 12% & flow 120l/s

Drawing details

drawing details

Sag

Double Bay

Capture Curve

capture curves

Notes:

  • Single pit (900mm)
  • Without deflectors and grate
  • Upstream transition: 2000mm
  • Inlet depression: 50mm 
  • Barrier Kerb and channel: 300mm 
  • Crossfall: 3%

Picture of tests

picture of Sag testspicture of sag tests

Areas of study and research

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