08-01-2014, 07:16 AM
The water supply shall include all the incoming water supplies and the systems they supply, which shall be as per NBC-2005, and shall include the following:
(i)Cold water supply;
(ii)hose reel supply; and
(iii)sprinkler supply.
The cold water supply system shall be designed based on number of projected Users and staff based at each Station, Station cleaning water requirement and wastage allowance.
Pipe work and fittings for water supply system
The water supply pipe work for the cold water, chilled water refrigeration and fire fighting services shall be galvanized steel and welded with expansion joints as necessary.
All sprinkler pipes shall be hot-dipped galvanized to BS EN ISO 1461 to achieve a galvanizing thickness of 100 microns. The pipe and fittings shall be designed for a minimum pressure of 16 bars. Fittings shall have wall thickness not less than those of the pipes. All sprinkler pipe work shall have identification bands, lettering and direction of flow indication at intervals not exceeding 5.0 m and at valves and branches.
Isolation valves may be either butterfly type of the wafer pattern in accordance with BS 5155 with corrosion resistant disc and stainless steel shaft or gate type complying with BS 5150 with resilient covered disc.
Check valves shall comply with BS 5153 and shall be of the swing type suitable for vertical use.
Automatic air relief valves shall be provided with an isolation valve for maintenance.
Plumbing pipe work and valves
A water piping system that is durable, easy to maintain and aesthetically pleasing shall be provided.
Piping materials shall be stainless steel, galvanized steel or copper dependant on the application and the appearance required. Sanitary pipe work shall be either chromium plated or stainless steel in locations such as toilets and washrooms.
(i)Cold water supply;
(ii)hose reel supply; and
(iii)sprinkler supply.
The cold water supply system shall be designed based on number of projected Users and staff based at each Station, Station cleaning water requirement and wastage allowance.
Pipe work and fittings for water supply system
The water supply pipe work for the cold water, chilled water refrigeration and fire fighting services shall be galvanized steel and welded with expansion joints as necessary.
All sprinkler pipes shall be hot-dipped galvanized to BS EN ISO 1461 to achieve a galvanizing thickness of 100 microns. The pipe and fittings shall be designed for a minimum pressure of 16 bars. Fittings shall have wall thickness not less than those of the pipes. All sprinkler pipe work shall have identification bands, lettering and direction of flow indication at intervals not exceeding 5.0 m and at valves and branches.
Isolation valves may be either butterfly type of the wafer pattern in accordance with BS 5155 with corrosion resistant disc and stainless steel shaft or gate type complying with BS 5150 with resilient covered disc.
Check valves shall comply with BS 5153 and shall be of the swing type suitable for vertical use.
Automatic air relief valves shall be provided with an isolation valve for maintenance.
Plumbing pipe work and valves
A water piping system that is durable, easy to maintain and aesthetically pleasing shall be provided.
Piping materials shall be stainless steel, galvanized steel or copper dependant on the application and the appearance required. Sanitary pipe work shall be either chromium plated or stainless steel in locations such as toilets and washrooms.