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A water supply system in a tall building typically involves the use of pumps to deliver water to upper floors. The system is designed to ensure that there is adequate water pressure and flow rate throughout the building, even at higher elevations.
Major tasks of water systems design: 1. Assessment & estimation of demands. 2. Supply scheme & schematic. 3. Water storage requirements. 4. Piping layout. 5. Pipe sizing. 6. Pump system design. The systems must comply with Water Authority (WSD) requirements. General principles for installing plumbing works (from WSD Plumbing Installation Handbook)
Indirect System of Cold Water Supply •The indirect system of cold water supply has only one drinking water outlet, at the sink. The cold water storage cistern has a minimum capacity of 230 liters, for location in the roof space. In addition to its normal supply function, it provides an adequate emergency
DIY guide covering cold water systems including indirect and direct cold water systems in your home and how they work to supply water.
The Indirect System In this system the cold water to the bath, basin and w.e. is supplied 'indirectly' from the cold water storage cistern, thus preventing back siphonage of foul water from the sanitary fittings into the company's main.
The indirect system of cold water supply has only one drinking water outlet, at the sink. The cold water storage cistern has a minimum capacity of 230 litres, for location in the roof space. The high-rise cold water supply systems have a non-return valve fitted to the outlet of each booster pump.
The provision of a cold water supply to a building is often to satisfy three demands: water for drinking, water for general usage, and water for fire fighting.
