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The maximum distance a 2×6 can span, according to the 2018 IRC, for a floor joist, is 12’-6”, ceiling joist 20’-8”, rafter 18’-0”, deck board 24”, deck joist 9’-11”, deck beam 8’-3”, and 6’-1” as for header. Always check the codes for determining factors or consult a Structural Engineer.
A 2×6 spaced 16 inches apart can span a maximum distance of 13 feet 5 inches when used as a rafter, 10 feet 9 inches when used as a joist, and 6 feet 11 inches when used as a deck beam to support joists with a 6-foot span.
2 maj 2023 · According to the International Residential Code 2021 (IRC), the maximum length a 2×6 can span as a floor joist is 12’-6”, as a ceiling joist is 20’-8”, as a rafter is 18’-0”, as a deck board is 24′, and as a deck joist is 9’-11”.
Use the span tables in the links below to determine the maximum allowable lengths of joists and rafters. These tables provide maximum spans for the #2 grades of four common species of lumber (Southern Pine, Douglas Fir, Hem-fir, and Spruce-pine-fir (SPF).
A complete analysis of wood’s mechanical properties is complex, but understanding a few basics of lumber strength will allow you to size joists and rafters with the use of span tables. Let’s start by taking a broad view.
1 wrz 2023 · Gain a comprehensive understanding of 2×6 span, including load capacity, species of wood, and moisture content. Explore span tables, online calculators, and engineering consultation for accurate calculations.
A 2×6 will hold 4 pounds per linear foot horizontally and 53 pounds per linear foot on its edge. Vertically, a 2×6 will hold between 662 and 998 pounds or over 7000 pounds when in a blocked and sheathed wall. However, many factors affect the amount of weight a 2×6 will hold.
