Homeowners often worry that the wood is ruined if a house gets wet during construction.
Wet roof joists.
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Span calculator for wood joists and rafters also available for the android os.
In a typical roof framed with dimension lumber the rafters rest on the exterior wall top plate at the lower end and bear against a ridge board at the top.
Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof.
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Tj 9001 installation guide for floor and roof.
Wet or rain soaked framing lumber will not rot in a matter of days.
The size of the ceiling joist also is accounted for in joist spacing.
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They are nominally 2 inches thick actual width usually 1 1 2 inches and come in a variety of widths from 8 to 12 inches.
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Joists are the parallel horizontal beams that run across an open space joining opposite walls in a building to support both the ceiling below and the floor above.
Water can cause problems if the lumber is allowed to stay wet for weeks and weeks so do whatever is possible to get a roof on the house.