S.P.S.M.B.H’s COLLGE OF ARCHITECTURE KOLHAPUR
Hose Reel 1. It is a high-pressure hose that carries water or another fire retardant to a fire to extinguish it. 2. It can be attached to a building's standpipe or plumbing system, with a high structure to accommodate the length of a hose to let it dry after use. It works on a pressure of 8-20 kpa. Wet Riser 1. Wet risers are used to supply water within buildings for fire-fighting purposes. Wet risers are permanently charged with water. 2. A Wet riser pump draws water from the wet riser storage tank and two sets of the pump, with landing valves at specified locations on each floor. 3. It should be supplied with power from an emergency generator. 4. Wet riser (diameter 150mm) cum down comer or only down comer system shall be provided for residential building. 5. For each 1000sq m floor area or it's part one riser shall be provided. 6. Group A, high rise buildings should have the riser mains of size 100mm as single outlet landing valves. 7. At every landing twin outlet each of 63mm dia. shall be provided (one should be connected to hose reel & another should be to hose & branch). 8. Length of the hose should be shall that it should reach the last point of floor area. 9. Minimum two courtyard hydrants shall be provided (courtyard hydrant will be an extension to riser). 10. Hose reel hose of 12mm dia. shall be provided from landing valve to wet-riser at each floor Dry Riser 1. It is a form of an internal hydrant for the fireman to use. 2. A dry riser is a normally empty pipe, that can be externally connected to a pressurized water source by firefighters. 3. It is a vertical pipe intended to distribute water to multiple levels of a building or structure as a component of the fire suppression systems VIPUL DEVICHAND OSWAL 1621
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