bar joist

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bar joist

construction

Also known as: open web joist

Learn about this topic in these articles:

use in building construction

In construction: Steel
…efficient structural shape is the bar (or open web) joist, a standard truss made with angles for the top and bottom chords, joined by welding to a web made of a continuous bent rod. It is used almost exclusively to support roofs and can span up to 45 metres (150…
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