With a maximum live load of 30 inches per square foot, 2-grade 26 joists can span a distance of up to 10 feet 9 inches between beams. Compared to No.-1 grade lumber, which can span up to 10 feet 11 inches under the same conditions, No.-1 grade lumber is slightly longer.

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How far can a 2×6 deck floor joist span?

Decking boards run from joist to joist, spanning the distance between them. The maximum distance between joists for 5/4 decking is 16 inches. Two-by-by-six or two-by-four decking can span up to 24 inches. Putting the joists closer together may be necessary if you plan to run the decking at an angle.

How far can a 2×6 span unsupported?

If you go by the 2018 International Residential Code (IRC), the maximum span of any 26 is 12’6”, 20’8”, 18’0”, 24’”, 9’11”, 8’3”, and 6’1” when it comes to the header.

How far can a 2×6 decking span without support?

At 16′′ OC, a 2×6 joist can span 8 feet for Cedar and Redwood and 9 feet for Pine and Fir. Longer spans are possible with 12′′ OC, while shorter spans are possible with 24′′ OC.