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BS 6700:1987

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
Available format(s)

Hardcopy , PDF

Superseded date

15-04-1997

Language(s)

English

Published date

30-04-1987

Foreword
Committees responsible
Specification
Section one. General
1 Scope
2 Definitions
3 Materials
Section two. Design considerations
4 Initial procedures
5 Cold water services
6 Hot water services
7 Prevention of bursting
8 Pipe sizing
9 Preservation of water quality
10 Frost precautions
11 Accessibility of pipes and water fittings
12 Water economy and energy conservation
Section three. Installation
13 Work on site
14 Inspection, testing and commissioning of pipelines,
    services and installations
Section four. Maintenance
15 Maintenance
Appendices
A Legal requirements
B Noise and vibration
C Examples of pumped systems
D Guidance on the calculation of hot water storage
    capacity
E Pipe sizing calculation
F Jointing of potable water pipework
G Procedure for the detection of water leakages in
    metered water services
H Publications referred to in this standard or related
    to it
Tables
1 Recommended minimum storage of cold water for
    domestic purposes (hot and cold outlets)
2 British Standards for stopvalves
3 Recommended internal dimensions for meter chambers
4 Design flow rates
5 Maximum water velocities in pipework
6 Backflow prevention measures to be used with various
    types of water fittings and appliances
7 Air gaps at taps
8 Dimensions of type A air gap
9 Minimum thickness of thermal insulating material to
    delay freezing for frost protection
10 Examples of insulating materials
11 Maximum permissible lengths of uninsulated hot water
    pipes
12 Maximum permitted rates of heat loss from pipes
13 Jointing of light gauge copper and stainless steel
    tube
14 Thrust per bar internal pressure
15 Bearing capacity of soils
16 Method of branch pipe connection
17 Maximum spacing of fixings for internal piping
18 Case 1: minimum sizes of storage vessel
19 Case 2: minimum sizes of storage vessel
20 Loading units (hot or cold supply)
21 Equivalent pipe lengths (copper, plastics and
    stainless steel)
22 Typical loss of head through taps and equivalent
    pipe lengths
23 Hot and cold water supply supplied from storage
24 Hot and cold water supply direct off main service
25 Jointing of potable water pipework
Figures
1 Connections for meters outdoors
2 Proprietary meter yokes for meters outdoors
3 Meter installation indoors
4 Meter installation indoors using a proprietary meter
    yoke
5 Metre installation indoors in cupboard
6 Installation of water softeners
7 Choice of hot water system
8 Direct (vented) system
9 Indirect (vented) system
10 Indirect unvented (vented primary) system
11 Indirect unvented (sealed primary) system
12 Illustration of obstruction of inlet or feed pipe
13 Example of secondary backflow protection of supply
    pipes
14 Examples of secondary backflow protection of
    distributing pipes
15 Typical examples of pipes entering buildings
16 Accessibility of pipes
17 Clear space needed above storage cisterns
18 Directions of thrusts developed in a pipeline due to
    internal pressure
19 Recommended positions of notches and holes in timber
    beams and joists
20 Indirect boosting from break cistern to storage
    cistern
21 Indirect boosting with pressure vessel
22 Direct boosting
23 Direct boosting with header and duplicate storage
    cisterns
24 Conversion of loading units to design flow rate
25 Determination of pipe diameter: cold water service
    (water at 12.8 deg C)
26 Determination of pipe diameter: hot water service
    (water at 80 deg C)
27 Head loss through stopvalves
28 Head loss through float-operated valves
29 Example of pipe sizing for hot and cold water
    services, low pressure system
30 Example of pipe sizing for hot and cold water
    services, mains pressure system
31 Typical pipework network
Index

Covers the system of pipes, fittings and connected appliances installed to supply any building, whether domestic or not, with hot and cold water for ablutionary, cleaning, sanitary, culinary, drinking and domestic laundry purposes.

Committee
B/504
DevelopmentNote
REPLACES CP 99: 1972, CP 310: 1965, CP 324. 202: 1951 AND CP 342: PART 1: 1970. BS DRAFT 94/109858 DC
DocumentType
Standard
Pages
106
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

BS 6465-2:1996 Sanitary installations Code of practice for space requirements for sanitary appliances
BS 7357:1990 Specification for 7.5 L WC flushing cisterns
BS 3970-1:1990 Sterilizing and disinfecting equipment for medical products Specification for general requirements
BS 5908:1990 Code of practice for fire precautions in the chemical and allied industries
BS 5482-1:1994 Domestic butane- and propane-gas-burning installations Specification for installations at permanent dwellings
BS 2745-1:1993 Washer-disinfectors for medical purposes Specification for general requirements
BS 6880-2:1988 Code of practice for low temperature hot water heating systems of output greater than 45 kW Selection of equipment
BS 6762-2:1991 Services for leisure accommodation vehicles and transportable accommodation units Code of practice for the installation of solid fuel fired heating in park homes and transportable accommodation units
BS 6675:1986 Specification for servicing valves (copper alloy) for water services
BS 7491-3:1994 Glass fibre reinforced plastics cisterns for cold water storage Specification for sectional tanks
BS 6880-1:1988 Code of practice for low temperature hot water heating systems of output greater than 45 kW Fundamental and design considerations
BS 7523:1991 Specification for preformed cellular polyethylene (PE) materials for the thermal insulation of pipework
BS 6465-1:1994 Sanitary installations Code of practice for scale of provision, selection and installation of sanitary appliances
BS 3632:1995 Specification for residential park homes

BS CP312-1(1973) : 1973 CODE OF PRACTICE FOR PLASTICS PIPEWORK (THERMOPLASTICS MATERIAL) - GENERAL PRINCIPLES AND CHOICE OF MATERIAL
BS 5410-1:1977 Code of practice for oil firing Installations up to 44 kW output capacity for space heating and hot water supply purposes
BS 5728-1:1979 Measurement of flow of cold potable water in closed conduits Specification for single meters
BS CP312-3(1973) : 1973 CODE OF PRACTICE FOR PLASTICS PIPEWORK (THERMOPLASTICS MATERIAL) - POLYETHYLENE PIPES FOR THE CONVEYANCE OF LIQUIDS UNDER PRESSURE
BS CP2010-4(1972) : LATEST CODE OF PRACTICE FOR PIPELINES - DESIGN AND CONSTRUCTION OF ASBESTOS CEMENT PIPELINES IN LAND
BS 4999-142:1987 General requirements for rotating electrical machines Specification for mechanical performance: vibration
BS 5440-1:1978 Installation of flues and ventilation for gas appliances of rated input not exceeding 60 kW (1st, 2nd and 3rd family gases). Flues
BS CP2010-1(1966) : AMD 1589 CODE OF PRACTICE FOR PIPELINES - INSTALLATION OF PIPELINES IN LAND
BS 1212-1:1953 Specification for ballvalves (excluding floats) Piston type
BS 3999-11:1972 Methods of measuring the performance of household electrical appliances Dishwashing machines
BS 6461-1:1984 Installation of chimneys and flues for domestic appliances burning solid fuel (including wood and peat) Code of practice for masonry chimneys and flue pipes
BS 4346-1:1969 Joints and fittings for use with unplasticized PVC pressure pipes Injection moulded unplasticized PVC fittings for solvent welding for use with pressure pipes, including potable water supply
BS 6465-1:1984 Sanitary installations. Code of practice for scale of provision, selection and installation of sanitary appliances
BS CP312-2(1973) : 1973 AMD 2337 CODE OF PRACTICE FOR PLASTICS PIPEWORK (THERMOPLASTICS MATERIAL) - UNPLASTICIZED PVC PIPEWORK FOR THE CONVEYANCE OF LIQUIDS UNDER PRESSURE
BS 6461-2:1984 Installation of chimneys and flues for domestic appliances burning solid fuel (including wood and peat) Code of practice for factory-made insulated chimneys for internal applications
BS CP342-2(1974) : 1974 CODE OF PRACTICE FOR CENTRALIZED HOT WATER SUPPLY - BUILDINGS OTHER THAN INDIVIDUAL DWELLINGS
BS 1212-3:1979 Specification for float operated valves (excluding floats). Diaphragm type (plastics body) for cold water services
BS 5410-2:1978 Code of practice for oil firing Installations of 45 kW and above output capacity for space heating, hot water and steam supply services
BS 1212-2:1970 Specification for ballvalves (excluding floats) Diaphragm type (brass body)
BS 5503-2:1977 Vitreous china washdown WC pans with horizontal outlet Materials, quality, performance and dimensions other than connecting dimensions
BS CP2010-2(1970) : 1970 PIPELINES - PART 2: DESIGN AND CONSTRUCTION OF STEEL PIPELINES IN LAND
BS 5449-1:1977 Code of practice for central heating for domestic premises. Forced circulation hot water systems

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