Last edited 13 Oct 2020

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.

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