By Fred Hall, Roger Greeno BA(Hons.) FCIOB FIPHE FRSA
Development companies guide, 3rd version ПРОФЕССИИ И РЕМЕСЛА, ДОМ и СЕМЬЯ Автор: Fred corridor, Roger GreenoИздательство: Butterworth-HeinemannДата публикации: may possibly 20, 2005ISBN: 0750664606Язык: EnglishКоличество страниц: 544Формат:PDFРазмер: nine MBThe distinct, hugely visible presentation of this guide has made it the basic at-a-glance advisor to most sensible perform and development rules compliance for college students and professionals.com0
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Additional resources for Building Services Handbook, Third Edition
Notes: (1) Servicing valves to be provided on supply pipes to storage and flushing cisterns. (2) Copper tube pipe sizes shown. Cold water storage cistern 22 mm overflow pipe 22 mm cold feed pipe 22 mm distributing pipe Bath Basin WC Hot water cylinder 15 mm rising main 15 mm WC Ground level Drain valve Basin Sink Combined stop and drain valve 750 mm min. : The Water Supply (Water Fittings) Regulations 1999. 16 Pipe duct 76 mm bore Hard and Soft Water Characteristics See also page 5. Hardness in water occurs when calcium or magnesium salts are present.
Notice of installation † given to the local authority Building Control Department. Building Regulation G3 † Hot Water Storage, requires a competent installer, precautions to prevent water temperature exceeding 100ƒC and any hot water discharge from safety devices to be conveyed safely and visibly. Water supply † direct feed from water main, therefore no atmospheric vent pipe and no cold water storage cistern. Water expansion † accommodated by suitably sized expansion vessel. Some units operate with an internal air gap (see next page).
Specification for single feed indirect cylinders. BS 417-2: Specification for galvanised low carbon steel cisterns, cistern lids, tanks and cylinders. Direct cylinders have no coil or annular heat exchangers. They can be identified with female pipe threads for the primary flow and return connections. For domestic use: copper † 74 to 450 litres capacity, galvanised steel † 73 to 441 litres capacity. Direct and indirect cylinders for industrial and commercial applications are manufactured in copper and galvanised steel in capacities up to 4500 litres.