Joist

These joists land on a beam. Between some of the joists is a form of pugging used for insulation and air sealing. Image: Rijksdienst voor het Cultureel Erfgoed

In architecture and engineering, a joist is one of the horizontal supporting members that run between foundations, walls, or beams to support a ceiling or floor. Typically, a joist has the cross section of a plank. Joists are often supported by beams laid out in repetitive patterns.

单词	Binding joist
释义	Binding joist 英语百科 Joist In architecture and engineering, a joist is one of the horizontal supporting members that run between foundations, walls, or beams to support a ceiling or floor. Typically, a joist has the cross section of a plank. Joists are often supported by beams laid out in repetitive patterns.
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Binding joist

Joist