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BS 8313:1997

Current
Current

The latest, up-to-date edition.

Code of practice for accommodation of building services in ducts
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-07-1997

Publisher

British Standards Institution

Committees responsible
Foreword
Code of practice
1 Scope
2 References
3 Definitions
4 Exchange of information
5 Materials and components
6 General
7 Restrictions on positioning and combination of services
8 Space requirements
9 Access
10 Protection of services in ducts
11 Drainage of service ducts
12 Ventilation of service ducts
13 Fire precautions
14 Other safety precautions
15 Service entries and exits
16 Identification and marking
17 Duct construction
18 Inspection and testing
19 Maintenance
Annexes
A (informative) Installation space for air ducts
    (detailed method)
B (informative) Installation space for air ducts
    (simplified method)
C (informative) Work in confined spaces
D (informative) Acts, bylaws and statutory regulations
Tables
1 Free area of ventilation opening for dispersal of small
    leaks
    A.1 Dimensions where f1=100 and f2=300
    A.2 Dimensions where f1=100 and f2=300
    A.3 Dimensions where f1=100 and f2=300
    A.4 Dimensions where f1=100 and f2=300
    A.5 Values of ea and eb
    A.6 Values of eal, ea2, eb1 and eb2
    A.7 Values of eal, ea2, eb1 and eb2 by firm obstacles
    A.8 Values of n for a firm obstacle on one side
    A.9 Values of n for a firm obstacle on two sides
    A.10 Values of n for a firm obstacle on three sides
    A.11 Values of n for a firm obstacle on four sides
    B.1 Dimensions of X
Figures
1 Minimum sizes of access openings for passage by persons
2 Anthropometric data
    A.1 Space with limitations due to firm obstacles
    A.2 Jointing and supporting air ducts without
          insulation and with a firm obstacle on one side
    A.3 Jointing and supporting air ducts without
          insulation and with a firm obstacle on two sides
    A.4 Jointing and supporting air ducts without
          insulation and with a firm obstacle on three sides
    A.5 Jointing and supporting air ducts without insulation
          and with a firm obstacle on four sides (obstacle
          not continuous for more than 1 m)
    A.6 Jointing and supporting pre-insulated air ducts
          with a firm obstacle on one side
    A.7 Jointing and supporting pre-insulated air ducts
          with a firm obstacle on two sides
    A.8 Jointing and supporting pre-insulated air ducts
          with a firm obstacle on three sides
    A.9 Jointing and supporting pre-insulated air ducts
          with a firm obstacle on four sides (obstacle
          not continuous for more than 1 m)
    A.10 Insulation of an air duct in position with a firm
          obstacle on one side
    A.11 Insulation of an air duct in position with a firm
          obstacle on two sides
    A.12 Insulation of an air duct in position with a firm
          obstacle on three sides
    A.13 Insulation of an air duct in position with a firm
          obstacle on four sides (obstacle not continuous
          for more than 1 m)
    A.14 Examples of installation spaces for flange
          jointed air ducts
    A.15 Installation space dimensions A and B for flange
          jointed air ducts with a firm obstacle on one side
    A.16 Installation space dimensions A and B for flange
          jointed air ducts with a firm obstacle on two sides
    A.17 Installation space dimensions A and B for flange
          jointed air ducts with a firm obstacle on three
          sides
    A.18 Installation space dimensions A and B for flange
          jointed air ducts with a firm obstacle on four
          sides
    A.19 Examples of installation space for slip jointed
          air ducts
    A.20 Installation space dimensions A and B for slip
          jointed air ducts with a firm obstacle on one
          or more sides
    A.21 e-values
    A.22 Minimum access allowance e for air ducts insulated
          in position
    A.23 Installation space dimensions A and B for air ducts
          insulated in position with a firm obstacle on one
          side
    A.24 Installation space dimensions A and B for air ducts
          insulated in position with a firm obstacle on two
          sides
    A.25 Installation space dimensions A and B for air ducts
          insulated in position with a firm obstacle on
          three sides
    A.26 Installation space dimensions A and B for air ducts
          insulated in position with a firm obstacle on
          four sides
    B.1 Installation spaces for uninsulated or
          pre-insulated air ducts
    B.2 Installation spaces for air ducts insulated after
          installation
Index
List of references

Recommendations for the design, construction, installation and maintenance of fixed ducts. Also covered are suspended flooring, ceiling voids and cavities.

This British Standard gives recommendations for the design, construction, installation and maintenance of ducts in buildings used for the accommodation of services. It also covers enclosures such as ceiling voids and cavities which are used for services but which are not always referred to as ducts.

The recommendations in this standard should also be applied as far as practicable to the adaptation, modification or refurbishment of existing ducts and services within them. Appropriate precautions should be taken in all cases where the existing ducts contain hazardous materials, e.g. asbestos.

This standard covers service ducts attached to the outside of buildings but not service ducts between buildings.

This standard does not cover the design and construction of air or refuse ducts, nor those with `heart units\', `packaged plumbing\' or `service walls\', although parts of it are relevant to them.

This standard does not cover spaces intended mainly for purposes other than the accommodation of services, nor with plant areas such as boiler and calorifier rooms or gas storage areas.

The piping of radioactive substances and the specialist requirements for piping cryogenic liquids are generally outside the scope of this standard.

Committee
B/209
DevelopmentNote
Supersedes 96/103803 DC and BS 8313(1989) (10/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType
Standard
Pages
54
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 476-4:1970 Fire tests on building materials and structures Non-combustibility test for materials
BS 1710:1984 Specification for identification of pipelines and services
BS 5839-1:1988 Fire detection and alarm systems for buildings Code of practice for system design, installation and servicing
BS EN 354:2010 Personal fall protection equipment. Lanyards
BS 2830:1994 Specification for suspended access equipment (suspended chairs, traditional steeplejack\'s seats, work cages, cradles and platforms) for use in the building, engineering construction, steeplejack and cleaning industries
BS 7671:1992 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS
BS 5306-0:1986 Fire extinguishing installations and equipment on premises Guide for the selection of installed systems and other fire equipment
BS 5378-1:1980 Safety signs and colours Specification for colour and design
BS EN 361:2002 Personal protective equipment against falls from a height. Full body harnesses
BS 4211:1994 Specification for ladders for permanent access to chimneys, other high structures, silos and bins
BS 5499-2:1986 Fire safety signs, notices and graphic symbols. Specification for self-luminous fire safety signs
BS 7273-2:1992 Code of practice for the operation of fire protection measures Mechanical actuation of gaseous total flooding and local application extinguishing systems
BS 5499-3:1990 Fire safety signs, notices and graphic symbols. Specification for internally-illuminated fire safety signs
BS 6891:1988 Specification for installation of low pressure gas pipework of up to 28 mm (R1) in domestic premises (2nd family gas)
BS 476-24:1987 Fire tests on building materials and structures Method for determination of the fire resistance of ventilation ducts
BS 5422:1990 Method for specifying thermal insulating materials on pipes, ductwork and equipment (in the temperature range -40°C to +700°C)
BS 4434:1995 Specification for safety and environmental aspects in the design, construction and installation of refrigerating appliances and systems
BS EN 358:2000 Personal protective equipment for work positioning and prevention of falls from a height. Belts for work positioning and restraint and work positioning lanyards
BS 6701:1994 Code of practice for installation of apparatus intended for connection to certain telecommunication systems
BS EN 365:2004 Personal protective equipment against falls from a height. General requirements for instructions for use, maintenance, periodic examination, repair, marking and packaging

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Hardcopy - English
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