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BS EN 806-3:2006
Specifications for installations inside buildings conveying water for human consumption. Pipe sizing. Simplified method (British Standard)
This European Standard is in conjunction with EN 806-1 and EN 806-2 for drinking water systems within premises. This European Standard describes a calculation method for the dimensioning of pipes for the type of drinking water standard-installations as defined in 4.2. It contains no pipe sizing for fire fighting systems.
British Standards Institution [bsi]