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

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 = aX^b+cX+d

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 = aX^b+cX+d

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 = aX^b+cX+d

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

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 = aX^b+cX+d

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