Technical Booklet D Structure·Page 84·4C.42
Permitted openings for windows and doors
Windows and a single leaf door are the only other openings allowed in an annex or building, and their size and location must comply with Diagram 4C.16.
The only other openings permitted in an annex or building are for windows and a single leaf door. The size and location of these openings should be in accordance with Diagram 4C.16.
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