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Cold Water Dwellings - Storage Capacities

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The table below indicates 24 hours storage requirements related to commonly used fittings.

Cold Water Dwellings - Storage Capacities vs. Fixtures
Type of FixtureStorage Capacity per Fitting
litersgal
Basin 90 23
Bath 900 207
Garden watering tap 180 47
Shower 140 - 230 36 - 60
Sink 90 - 180 23 - 47
Urinal 110 29
WC 180 47

The table below indicates 24 hours storage requirements related to different types of buildings.

Cold Water Dwellings - Storage Capacities vs. Type of Building
Type of BuildingStorage per Person
litersgal
Hostels 90 23
Hotels 135 35
Offices with canteens 45 12
Offices without canteens 40 10
Restaurants, per meal 7 2
Boarding School 90 23
  • check CIBSE Guide G (2004) Public Health Engineering

A water storage in a domestic dwelling should have a capacity of at least 200 - 300 liters.

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Converting WSFU - Water Supply Fixture Units - to GPM.

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Sizing water supply service and distribution lines based on Water Supply Fixture Units (WSFU).

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Sizing of water supply pipe lines.

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Free online tool for designing water supply systems in buildings.

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