BUILDING CONTROLS

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

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4. An arrangement of firefighting within the building by means of vertical rising mains not less than 100 mm internal diameter with landing valves on each floor landing which is normally dry but is capable of being charged with water usually by pumping from fire service appliances. Down-Comer -

1. An arrangement of firefighting within the building by means of a down-comer pipe. 2. It is connected to the terrace tank through terrace pump, gate valve and non return valve and having mains not less than 100 mm internal diameter. It has landing valves on each floor/landing. 3.It is also fitted with inlet connections at ground level for charging with water by pumping from fire service appliances and air release valve at roof level to release trapped air inside.

Static Water Storage Tank 1. Satisfactory water supply for the purpose of firefighting should be always available in the form of underground terrace level static storage tank with capacity 10,000 litres minimum.

2. Provision for a suitable number of manholes should be made for inspection, repairs etc.

3. To prevent stagnation of water, the suction tank of the water supply should be fed only through an overflow arrangement to maintain the level. 4. Water tank capacity mentioned below is for 1 riser. If the number of risers will be more than 1, than the quantity of water shall be increased in that proportionate water tank.

Fire Detection -

1. In high rise buildings, automatic fire detection and alarm facilities should be provided to warn its occupants early of the existence of fire, so that they may escape, or to facilitate the orderly conduct of fire exit drills. 2. They detect and warn people through visual and audio appliances when smoke, fire, carbon dioxide or other emergencies are present.

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