Transport SA

Inlet Type: Double Bay (1900mm) With "Abrupt" Transition

On-grade

With & without deflectors

Drawing details


Drawing Details

75 mm Lid without support

Capture Curves

- "Abrupt" transition
- 75mm lid without support

75mm Lid without support

Notes

  • Double Bay (1900mm)
  • 75mm lid
  • Without support to lid
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

- "Abrupt" transition
- without central support

Q = aXb+cX+d

 curve equations
 

Notes

  • Double Bay (1900mm)
  • 75mm lid 
  • Without support to lid
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Picture of tests

Standard
1900mm inlet opening  - (75mm lid "abrupt" transition 
without support)

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

Grade 0.5% & flow 70.5l/s

Grade 0.5% & flow 70.5l/s

Grade 2% & flow 122l/s

Grade 2% & flow 122l/sGrade 2% & flow 122l/s

Grade 8% & flow 320l/s

Grade 8% & flow 320l/s

Grade 8% & flow 320l/s

 

 

 

 

 

 

 

50 mm Lid with central front support

Capture Curves

- “Abrupt” transition
- 50mm lid with central front support

50mm lid capture curves
 

Notes:

  • Double Bay (1900mm)
  • 50mm lid with central front support
  • Inlet with deflectors, if grade>=1%
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Curve Equations

-"Abrupt" transition
-Central front support

Q = aXb+cX+d

50mm lip curve equations

Notes:

  • Double Bay (1900mm)
  • 50mm lid with central front support
  • Inlet with deflectors, if grade>=1%
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

50 mm Lid with central standard support(setback)

Capture Curves

-  "Abrupt" transition
-  Central standard support (setback)

capture curves 
 

Notes

  • Double Bay (1900mm)
  • 50mm lid
  • Deflectors if grade>=1%
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Kerb and channel: barrier- 300mm
  • Kerb: channel-300mm,
  • Crossfall: 3%

Curve Equations

-  “abrupt” transition
-  Central standard support (setback)

   Q = aXb+cX+d

curve equations 
 

Notes

  • Double Bay (1900mm)
  • 50mm lid with central standard support (setback)
  • Inlet with Deflectors, if grade>=1%
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Picture of tests

Grade 0.25% & flow 241l/s

Grade 0.25% & flow 241l/s

Grade 0.25% & flow 241l/s

 

 

Grade 1% & flow 169l/s

Grade 1% & flow 169l/sGrade 1% & flow 169l/s

Grade 6% & flow 121l/s

Grade 6% & flow 121l/sGrade 6% & flow 121l/s

Grade 10% & flow 121l/s

Grade 10% & flow 121l/s

Grade 16% & flow 70l/s

Grade 16% & flow 70l/s

Single Bay (900mm)

Drawing details

drawing details

With deflectors

Capture Curves

capture curves

Notes

  • Single Bay (900mm)
  • With deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Kerb and channel: barrier- 300mm
  • Kerb: channel-300mm,
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes

  • Single Bay (900mm)
  • With deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Picture of tests

Grade 4% & App. Flow 123lps

test pictures

Without deflectors

Capture Curves

capture curves

Notes

  • Single Bay (900mm)
  • Without deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Kerb and channel: barrier- 300mm
  • Kerb: channel-300mm,
  • Crossfall: 3%

Curve Equations

Q = aXb+cX+d

curve equations

Notes

  • Single Bay (900mm)
  • With deflectors
  • Upstream transition: 1500mm
  • Downstream transition: 500mm
  • Inlet depression: 50mm
  • Barrier Kerb and channel: 300mm
  • Crossfall: 3%

Picture of tests

Grade 0.25% & App. Flow 39lps

Grade 0.25% & App. Flow 39lps

Sag

Double Bay Sag Test with 50mm lid & 75 mm lid

Capture Curves

Sag Curve  for 50mm & 75mm lid

Notes

  • Double Bay (1900mm)
  • 75mm lid with no support vertical transition
  • 50mm lid with back watertable support vertical transition
  • Upstream transition: 1500mm
  • Inlet depression: 50mm
  • Kerb and channel: barrier- 300mm
  • Kerb: channel-300mm
  • Crossfall: 3%

Picture of tests

Sag Test

sag test picturessag test pictures

Areas of study and research

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