- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 18 Sep 2020
Approved document C, Site preparation and resistance to contaminants and moisture, suggests that a wall is: 'Any opaque part of the external envelope of a building that is at an angle of 70° or more to the horizontal.'
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), suggests that the external wall of a building includes all of the following:
- Anything located within any space forming part of the wall.
- Any decoration or other finish applied to any external (but not internal) surface forming part of the wall.
- Any windows and doors in the wall.
- Any part of a roof pitched at an angle of more than 70 degrees to the horizontal if that part of the roof adjoins a space within the building to which persons have access, but not access only for the purpose of carrying out repairs or maintenance.
 Related articles on Designing Buildings Wiki
Featured articles and news
How to write them and what they should include.
Five outstanding aspects of the profession.
The seismic strengthening of historic churches.
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.
Technology is making remote work a reality.
Carefully placed structures add drama to pastoral vistas.
Report provides actions required by 2030 to achieve a zero carbon economy.
What type of cool roof is most suitable?
Active Travel programme prioritises cyclists and pedestrians.
CIAT issues caution for use of new standard.
Industry leaders discuss climate change, the economy and other influences.