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Independent ceiling at 400mm centres, span of 4m. Will hold 2 x 12.5mm fireboard - total plasterboard weight 20kg/m3. Also some insulation taking the total static load to less than 30kg/m3. No live load as the floor will remian in situ above.
Are there any tables for the size of ceiling joists for the ceiling for c16 or c24 timber. I can only find floor joists, not ceiling joists (I assume the pure static load will allow me to use smaller joists that for a floor?)
Are there any tables for the size of ceiling joists for the ceiling for c16 or c24 timber. I can only find floor joists, not ceiling joists (I assume the pure static load will allow me to use smaller joists that for a floor?)