RAFTER SPAN TABLE. ALLOWABLE SPANS IN FEET & INCHES. #2 Spruce-Pine-Fir ... 2 X 6. 24". 9-9. 9-9. 12". 17-5. 17-0. 16". 15-1. 15-1. 2 X 8. 24". 12-4. 12-4. 12". |
Header Size. Structure Width. Header. Span. 12. 16. 20. 24. 28. 32. 4-feet. 2 – 2 x 4. 2 – 2 x 4. 2 – 2 x 6. 2 – 2 x 6. 2 – 2 x 6. 2 – 2 x 6. 6-feet. 2 – 2 x 6. |
Find the column for your dead load and spacing, and the row for your timber size to find the permissible clear span on slope in metres. |
ROOF RAFTERS. Roof slope 3 in 12 or less. Light roof covering, no ceiling. 20# Live Load, 10# Dead Load, 1/240. Span (feet and inches). Species. Grade. 2x6. 2x8. |
The following table represents the minimum standards for roof rafters, ceiling joists, and floor joists contained within the. 2001 California Building Code and ... |
These span tables include spans for dimension lumber in the species hemlock, spruce, pine, fir for snow loads of 20 to 60 pounds per square foot. |
RAFTER SPAN TABLES. ALLOWABLE SPANS IN FEET AND INCHES. #2 Spruce-Pine-Fir ... 2 X 6. 16”. 10-8. 10-8. 24”. 8-8. 8-8. 12”. 15-7. 15-7. 2 X 8. 16”. 13-6. 13-6. 24”. |
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