Every number here is a working estimate to check with your building authority. Whoever prints this page takes responsibility for what is in it.
Lessons / Decking and patterns
Change it
Board thickness sets joist spacing
Show a hint
5/4 boards laid on joists 24 in apart.
Every number here is a working estimate. Check it with your building authority.Turn JavaScript on to work the lesson. The drawing shows how it starts.
The rule this lesson teaches
Boards under 1 1/2 in thick need joists at 16 in or closer; full 1 1/2 in boards reach 24 in.