Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 7·25(3)
Definitions – Wall
Wall means any opaque part of the external envelope at 70 degrees or more to the horizontal, including piers, chimneys, columns and parapets that form part of the wall.
"Wall" means any opaque part of the external envelope of a building that is at an angle of 70º or more to the horizontal and includes piers, chimneys, columns and parapets which form part of the wall.
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