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What spans can I use for redwood beams, joists and decking?

Beam Spans.

For non stress-graded redwood lumber (Construction Heart), with a live load of 40 lbs. per square foot.

Beam Spacing
Beam Sizes
  4X6 4x8 4x10
  Span Span Span
6 feet 4'0" 5'0" 7'3"
8 feet 3'3" 4'3" 6'3"
10 feet 3'0" 3'9" 5'6"
12 feet 2'9" 3'6" 5'0"

Joist Spans.

For non-stress graded redwood lumber (Construction Heart) with live load of 40 lbs. per square foot.

Joist Size Joist Spacing Joist Span
2x6 16" on center 7'3"
  24" on center 6'0"
2x8 16" on center 10'9"
  24" on center 8'9"
2x10 16" on center 13'6"
  24" on center 11'0"

Decking Spans.

Construction Heart or Construction Common 2x6 decking should be nailed to joists which are spaced no more than 24 inches on center.

See Redwood Deck Construction



Next: Deck Surface

   
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