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ROOF-CEIUNG CONSTRUCTION DEAD LOAD = 10 pst DEAD LOAD = 20 pst 2x4 2x6 2x8 I 2 x 10 2 x 12 2x4 2x6 2x8 2 x 10 2 x 12 RAFTER Maximum rafter spans' SPACING (feet - (feet - (feet - (feet - (feet - (feet - (feet- (feet - (feet - (feet - (inches) SPECIES AND GRADE inches) inches) inches) inches) inches) inches) inches) inches) inches) inches) Douglas fir-larch SS 10-5 16-4 21-7 Note b Note b 10-5 16-4 21-7 Note b Note b Douglas fir-larch #1 10-0 15-9 20-10 Note b Note b 10-0 15-4 19-5 23-9 Note b Douglas fir-larch #2 9-10 15-6 20-5 25-8 Note b 9-10 14-4 18-2 22-3 25-9 Douglas fir-larch #3 8-7 12-6 15-10 19-5 22-6 7-5 10-10 13-9 16-9 19-6 Hem-fir SS 9-10 15-6 20-5 Note b Note b 9-10 15-6 20-5 Note b Note b Hem-fir #1 9-8 15-2 19-11 25-5 Note b 9-8 14-11 18-11 23-2 Note b Hem-fir #2 9-2 14-5 19-0 24-3 Note b 9-2 14-2 17-11 21-11 25-5 12 Hem-fir #3 8-7 12-6 15-10 19-5 22-6 7-5 10-10 13-9 16-9 19-6 Southern pine SS 10-3 16-1 21-2 Note b Note b 10-3 16-1 21-2 Note b Note b Southern pine #1 10-0 15-9 20-10 Note b Note b 10-0 15-9 20-10 25-10 Note b Southern pine #2 9-10 15-6 20-5 Note b Note b 9-10 15-1 19-5 23-2 Note b Southern pine #3 9-1 13-6 17-2 20-3 24-1 7-11 11-8 14-10 17-6 20-11 Spruce-pine-fir SS 9-8 15-2 19-11 25-5 Note b 9-8 15-2 19-11 25-5 Note b Spruce-pine-fir #1 9-5 14-9 19-6 24-10 Note b 9-5 14-4 18-2 22-3 25-9 Spruce-pine-fir #2 9-5 14-9 19-6 24-10 Note b 9-5 14-4 18-2 22-3 25-9 Spruce-pine- fir #3 8-7 12-6 15-10 19-5 22-6 7-5 10-10 13-9 16-9 19-6 Douglas fir-larch SS 9-6 14-11 19-7 25-0 Note b 9-6 14-11 19-7 24-9 Note b Douglas fir-larch #1 9-1 14-4 18-11 23-9 Note b 9-1 13-3 16-10 20-7 23-10 Douglas fir-larch #2 8-11 14-1 18-2 22-3 25-9 8-6 12-5 15-9 19-3 22-4 Douglas fir-larch #3 7-5 10-10 13-9 16-9 19-6 6-5 9-5 11-11 14-6 16clO Hem-fir SS 8-11 14-1 18-6 23-8 Note b 8-11 14-1 18-6 23-8 Note b Hem-fir #1 8-9 13-9 18-1 23-1 Note b 8-9 12-11 16-5 20-0 23-3 Hem-fir #2 8-4 13-1 17-3 21-11 25-5 8-4 12-3 15-6 18-11 22-0 16 Hem-fir #3 7-5 10-10 13-9 16-9 19-6 6-5 9-5 11-11 14-6 16-10 Southern pine SS 9-4 14-7 19-3 24-7 Note b 9-4 14-7 19-3 24-7 Note b Southern pine #1 9-1 14-4 18-11 24-1 Note b 9-1 14-4 18-10 22-4 Note b Southern pine #2 8-11 14-1 18-6 23-2 Note b 8-11 13-0 16-10 20-1 23-7 Southern pine #3 7-11 11-8 14-10 17-6 20-11 6-10 10-1 12-10 15-2 18-1 Spruce-pine-fir SS 8-9 13-9 18-1 23-1 Note b 8-9 13-9 18-1 23-0 Note b Spruce-pine-fir #1 8-7 13-5 17-9 22-3 25-9 8-6 12-5 15-9 19-3 22-4 Spruce-pine-fir #2 8-7 13-5 17-9 22-3 25-9 8-6 12-5 15-9 19-3 22-4 Spruce-pine-fir #3 7-5 10-10 13-9 16-9 19-6 6-5 9-5 11-11 14-6 16-10 Douglas fir-larch SS 8-11 14-0 18-5 23-7 Note b 8-11 14-0 18-5 22-7 Note b Douglas fir-larch #1 8-7 13-6 17-9 21-8 25-2 8-4 12-2 15-4 18-9 21-9 Douglas fir-larch #2 8-5 13-1 16-7 20-3 23-6 7-9 11-4 14-4 17-7 20-4 Douglas fir-larch #3 6-9 9-11 12-7 15-4 17-9 5-10 8-7 10-10 13-3 15-5 Hem-fir SS 8-5 13-3 17-5 22-3 Note b 8-5 13-3 17-5 22-3 25-9 Hem-fir #1 8-3 12-11 17-1 21-1 24-6 8-1 11-10 15-0 18-4 21-3 Hem-fir #2 7-10 12-4 16-3 20-0 23-2 7-8 11-2 14-2 17-4 20-1 19.2 Hem-fir #3 6-9 9-11 12-7 15-4 17-9 5-10 8-7 10-10 13-3 15-5 Southern pine SS 8-9 13-9 18-1 23-1 Note b 8-9 13-9 18-1 23-1 Note b Southern pine #1 8-7 13-6 17-9 22-8 Note b 8-7 13-6 17-2 20-5 24-4 Southern pine #2 8-5 13-3 17-5 21-2 24-10 8-4 11-11 15-4 18-4 21-6 Southern pine #3 7-3 10-8 13-7 16-0 19-1 6-3 9-3 11-9 13-10 16-6 Spruce-pine-fir SS 8-3 12-11 17-1 21-9 Note b 8-3 12-11 17-1 21-0 24-4 Spruce-pine-fir #1 8-1 12-8 16-7 20-3 23-6 7-9 11-4 14-4 17-7 20-4 Spruce-pine-fir #2 8-1 12-8 16-7 20-3 23-6 7-9 11-4 14-4 17-7 20-4 Spruce-pine-fir #3 6-9 9-11 12-7 15-4 17-9 5-10 8-7 10-10 13-3 15-5 TABLE R802.5.1(2) RAFTER SPANS FOR COMMON LUMBER SPECIES (Roof live 1oad::20 pst, ceiling attached to rafters, LJil = 240) (continued) FLORIDA BUILDING CODE - RESIDENTIAL 8.9