Cold Water Dwellings - Storage Capacities

Required cold water dwelling storage capacity - commonly used fixtures and types of buildings. Calculate 24-hour storage requirements based on fixtures and building types per CIBSE Guide G (2004).

Cold Water Dwellings - Storage Capacities

This tool calculates storage requirements for cold water systems in dwellings based on fixtures and building types.

Key Guidelines:

A water storage in a domestic dwelling should have a capacity of at least 200-300 liters
Calculations based on CIBSE Guide G (2004) Public Health Engineering

Calculator

Inputs

Number of Basins (fixtures)

Number of Baths (fixtures)

Number of Garden Watering Taps (fixtures)

Number of Showers (fixtures)

Number of Sinks (fixtures)

Number of Urinals (fixtures)

Number of WCs (fixtures)

Results

Basin Storage Requirement-- liters

Bath Storage Requirement-- liters

Garden Tap Storage Requirement-- liters

Shower Storage Requirement-- liters

Sink Storage Requirement-- liters

Urinal Storage Requirement-- liters

WC Storage Requirement-- liters

Total Storage Capacity Required-- liters

Type of Fixture	Storage Capacity (liters)	Storage Capacity (gal)
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

Type of Building	Storage per Person (liters)	Storage per Person (gal)
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

Reference

Source: CIBSE Guide G (2004) Public Health Engineering
Domestic Dwelling Standard: A water storage in a domestic dwelling should have a capacity of at least 200-300 liters