BS 8485:2015+A1:2019 Guidance for the design of protective measures for methane and carbon dioxide ground gases for new buildings
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BS 8485:2015+A1:2019

Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings

Status : Current   Published : June 2015



What is this standard about?

Toxic, asphyxiating or explosive gases can leak from the ground and accumulate in buildings, posing health risks. This standard describes how to characterize sites and prevent the entry of carbon dioxide and methane into new buildings.

This amended edition of the standard clarifies the gas protection scoring methods and the criteria for gas resistant membranes.

Other industry guidance exists but none provides the same clarity on remedial solution selection.

Who is this standard for?

  • Consultants who use the standard to classify sites and design gas protection measures
  • Regulators (environmental health officers and building control) who assess proposed measures
  • Local authorities (planning and building control)
  • Membrane manufacturers and suppliers
  • Contractors installing gas protective measures
  • Builders, developers, architects and engineers
  • Geotechnical and environmental engineers
  • Construction risk assessors
  • Site investigators

Why should you use this standard?

It provides:

  • Recommendations on ground gas site characterization and the choice of solutions for the design of integral gas protective measures for new buildings to prevent the entry of carbon dioxide and methane, and provide a safe internal environment.
  • Recommendations and criteria with regards to those membranes that can be used as a gas resistant membrane.
  • A process that can be used to demonstrate that a risk posed by the potential or actual presence of carbon dioxide and methane has been addressed.

Standard NumberBS 8485:2015+A1:2019
TitleCode of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings
Publication Date30 June 2015
Normative References(Required to achieve compliance to this standard)BS 8576:2013, BS 10175:2011+A1:2013, BS EN 13137
Informative References(Provided for Information)BS 5930, BS EN ISO 11665-1, BS EN 1992-1-1, BS 5925, BS ISO 18589, Ionising Radiations Regulations 1999, Building Regulations 2000, ASTM D638, BS EN ISO 11074, BS ISO 15105-1, Building Regulations 2010, BS ISO 23909, Management of Health and Safety Regulations at Work 1999, BS 8102:2009, BS ISO 18400-105:2017, BS ISO 18400-104:2018, BS ISO 18400-201:2017
ReplacesBS 8485:2007
Amended ByAmendment, January 2019; Corrigendum, February 2016
Draft Superseded By18/30377236 DC
DescriptorsCarbon dioxide, Site investigations, Soil pollution, Waste tips, Gases, Construction operations, Ventilation, Risk assessment, Methane, Wastes, Hazards, Safety measures, Gas analysis, Contamination, Soil surveys, Buildings
ISBN978 0 539 00894 4
File Size6.641 MB

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