Section 7.05.1 of the Queensland Urban Drainage Manual states that there are types of kerb inlet in common use.
- Grate only inlets;
- Side inlets;
- Combination grate and side inlets;
- Special site specific designs.
Grate Only Inlets
Side Inlet Pits rely on the ability of the opening under the backstone or lintel to capture flow. They are usually depressed at the invert of the channel to improve capture capacity.
Combination inlets utilise the backstone arrangement of the side inlet with the added capacity of a grate in the channel.
Site Specific Inlets
Special site specific designs are sometimes required for high inflows.