Last Updated：2025/11/30
a method of transferring load between joists to enable a cutout of a joist to allow for a plumbing run, by having doubled-up cross-joists to run between the two adjacent joists of the severed joist at each side of the cut
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plumber's box
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Source Word
plumber's box
Noun
Japanese Meaning
配管走行のために、切り欠かれたジョイストの両側に隣接するジョイスト間で二重の横架材を設け、荷重を伝達させる構造補強工法
（ plural ）
