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Roof joist construction.
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Joists attach to beams lying parallel to each other and being aligned horizontally.
Apr 30 2019 explore howards driving school s board roof joist on pinterest.
Notched roof joists connect and hold the longest 2 sides in place.
Joist is a term used in construction for load bearing planks that run horizontally or nearly to horizontally to ground.
So the only reason these planks are called roofing joists is because they run horizontally or nearly horizontally to the ground.
An additional roof joist is added at each end to hold the other two sides in place.
Construction worker on roof.
A roof joist can be made from wood metal concrete and a variety of other materials as long as the material is strong and very sturdy.
Joists fit into gaps in the uppermost top plates of the two sides.
Roof supports which are angled are known as rafters.