Distance Between Floor Joists. Joists at 12oc should be spaced 10-12 16oc 14-12 apart and 24oc a 22-12 separation. If you were to draw a line down the center of two joists and then measure the distance between them as 16 inches that measurement is 16 inches on center.
Again this depends on the factors of species of wood grade and the intended load on the wood all come into play. Deck joists are typically spaced either every 12 inches or 16 inches on center. So the minimum is 18 for floor joists and 12 for wood beams within the building foundation according to the Internaitonal Residential Code IRC and the Residential Edition of the Florida Building Code FBC R3171 1 UNLESS the wood is preservative-treated or naturally durable.
Measure and cut the blocks from the same material as the joists.
The distance between two deck joists is measured in inches on center commonly abbreviated as OC. The maximum joist spacing you can use will depend on the size and allowable span of your joists. The thickness of flooring joists themselves will be determined by whats going on top of them. So the minimum is 18 for floor joists and 12 for wood beams within the building foundation according to the Internaitonal Residential Code IRC and the Residential Edition of the Florida Building Code FBC R3171 1 UNLESS the wood is preservative-treated or naturally durable.
