Revision history of "Permanent opening"

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  • (cur | prev) 07:33, 21 February 2025 Designing Buildings (Talk | contribs) (584 bytes) (Created page with "Approved document F: Volume 1: Dwellings, 2021 edition, defines a permanent opening as: ‘An opening between rooms or floors that has no means of closing it, e.g. an open stairw...")

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