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Deeper joists span farther
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2x8 joists at 16 in asked to span 13 ft.
| Joist | Max span | Cantilever | Verdict |
|---|
An asterisk marks a span longer than joist stock is normally carried, so your yard may not have it.
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
Spruce pine fir at 16 in centres, not incised, spans 12 ft as a 2x8 and 15 ft 2 in as a 2x10.