Types of riser
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- Dry riser: Used to supply water within buildings for fire-fighting purposes. Dry risers do not contain water when they are not being used, but are charged with water by fire service pumping appliances when necessary.
- Wet riser: Used to supply water within buildings for fire-fighting purposes. Wet risers are permanently charged with water.
- Stairs riser: The vertical face between the back of the tread of one stair and the front of the tread of the stair above. Risers may be solid, or may be open.
- Vertical riser: The term used to refer to any component that extends vertically through a building.
- Multi-purpose riser. A multiple service vertical distribution module, constructed from primed or galvanised mild
steel and incorporating appropriate building services that may be lagged (insulated).
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