BS 8206-2:2008 - Lighting for buildings. Code of practice for daylighting – BSI British Standards

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BS 8206-2:2008

Lighting for buildings. Code of practice for daylighting

Status : Confirmed, Current   Published : September 2008



BS 8206-2:2008 gives recommendations regarding design for daylight in buildings. It includes recommendations on the design of electric lighting when used in conjunction with daylight.

BS 8206-2 describes good practice in daylighting design and presents criteria intended to enhance the well-being and satisfaction of people in buildings, recognizing that the aims of good lighting go beyond achieving minimum illumination for task performance.

This revision of BS 8206-2 has been prepared to take account of the publication of BS EN 12464-1 and BS EN 15193. In particular, some of the manual calculations that appeared in the 1992 edition have been omitted and a new annex on climate-based daylight modelling has been added. There is also a new clause on daylighting and health.

Simple graphical and numerical methods are given for testing whether the criteria are satisfied, but these are not exclusive and computer methods may be used in practice. Sunlight and skylight data are given.

BS 8206-2:2008 contains:

1.    Terms and definitions

2.    Aims and criteria for design

  • The contribution of daylight
  • Windows and view
  • Daylight and room brightness
  • Daylight for task lighting

3.    Further design issues

  • Electric lighting used in conjunction with daylight
  • Sunlight shading 
  •  Energy efficiency
  • Conservation of materials inside buildings
  • Statutory and legal requirements affecting the provision of daylight

4.    Methods of calculation

  • Sunlight 
  • Calculation of average daylight factor
  • Calculation of daylight illuminance 
  •  Examples of the calculation of window transmittance

As a code of practice, BS 8206-2 takes the form of guidance and recommendations. The aim of the standard is to give guidance to architects, engineers, builders and others who carry out lighting design.

BS 8206-2:2008 supersedes BS 8206-2:1992, which is withdrawn.

Standard NumberBS 8206-2:2008
TitleLighting for buildings. Code of practice for daylighting
StatusConfirmed, Current
Publication Date30 September 2008
Confirm Date01 May 2018
Cross ReferencesBS 4800, BS 6100-1:2004, BS 6100-7:2008, BS 8207, BS 8211-1, BS 8220, BS EN 12464-1:2002, BS EN 12665:2002, BS EN 15193, BS ISO 15469:2004, CIBSE Lighting Guide LG10 1999, CIBSE Lighting Guide LG8 1994, Workplace (Health, Safety and Welfare) Regulations 1992, Health and Safety (Display Screen Equipment) Regulations 1992
ReplacesBS 8206-2:1992
Draft Superseded By07/30157086 DC
DescriptorsDesign calculations, Architectural design, Interior lighting, Structural design, Buildings, Lighting systems, Sunlighting, Glare, Rooflights, Design, Natural lighting, Daylight factor, Energy consumption, Reflection factor, Windows, Transmittance, Illuminance, Lighting levels
ISBN978 0 580 57793 2
File Size1.848 MB

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