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发表于 2014-5-22 16:49
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来自: 中国山东青岛
4 Draught stops
Air spaces enclosed behind ceilings, panelling or linings shall be divided by close-fitting draught stops
spaced not more than 14 m apart. In the vertical direction, such enclosed air spaces, including those
behind linings of stairways, trunks, etc., shall be closed at each deck. |
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