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• 0 <br /> TABLE R507.6 <br /> DECK BEAM SPAN LENGTHSa'b(ft. -in.) <br /> DECK JOIST SPAN LESS THAN OR EQUAL TO: (feet) <br /> SPECIES' SIZEd <br /> 6 8 10 12 14 16 18 <br /> 2 —2 x 6 6-4 6-0 5-6 4-7 3-11 3-5 3-0 <br /> 2—2 x 8 8-11 8-5 7-2 6-0 5-2 4-6 4-0 <br /> 2-2 x 10 11-11 10-9 9-2 7-8 6-7 5-9 5-1 <br /> 2—2 x 12 14-5 12-7 11-2 9-4 8-0 7-0 6-3 <br /> Southern pine <br /> 3—2 x 6 8-1 7-8 7-3 6-10 5-10 5-1 4-7 <br /> 3—2 x 8 11-3 10-4 9-5 8-10 7-9 6-9 6-0 <br /> 3—2 x 10 14-5 12-10 11-10 10-10 9-10 8-7 7-8 <br /> 3—2 x 12 17-3 15-4 13-10 12-7 11-7 10-6 9-4 <br /> 3 x 6 or 5-5 4-5 3-6 2-11 2-6 2-2 1-11 <br /> 2-2x6 <br /> 3 x 8 or 7-3 5-9 4-8 3-10 3-4 2-11 2-7 <br /> 2—2 x 8 <br /> 3 x 10 or 8-11 7-5 5-11 4-11 4-3 3-8 3-3 <br /> Douglas fir- 2—2 x 10 <br /> larche, hem-fire, <br /> spruce-pine-fire, 3 x 12 or 10-4 8-11 7-2 6-0 5-2 4-6 4-0 <br /> redwood,western 2—2 x 12 <br /> cedars, ponderosa <br /> pinef, red pinef <br /> 4 x 6 6-3 5-11 4-11 4-1 3-6 3-1 2-9 <br /> 4 x 8 8-9 7-9 6-6 5-5 4-8 4-1 3-7 <br /> 4 x 10 11-0 9-6 8-3 6-11 5-11 5-2 4-7 <br /> L I � <br />