IRWIN® Rafter Square Reference Guide Complete Instruction Book ...
IRWIN® Rafter Square Reference Guide Complete Instruction Book ...
IRWIN® Rafter Square Reference Guide Complete Instruction Book ...
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13 INCH RISE 13-12 PITCH 47 1 ⁄4 DEGREESCommon<strong>Rafter</strong>LengthHip or Val.<strong>Rafter</strong>LengthRun Ft.1 1' 5 3 ⁄4" 1' 9 3 ⁄8"2 2' 11 3 ⁄8" 3' 6 3 ⁄4"3 4' 5 1 ⁄8" 5' 4 1 ⁄8"4 5' 10 3 ⁄4" 7' 1 1 ⁄2"5 7' 4 1 ⁄2" 8' 10 7 ⁄8"6 8' 10 1 ⁄8" 10' 8 1 ⁄4"7 10' 3 7 ⁄8" 12' 5 5 ⁄8"8 11' 9 1 ⁄2" 14' 3"9 13' 3 1 ⁄4" 16' 0 3 ⁄8"10 14' 8 7 ⁄8" 17' 9 3 ⁄4"11 16' 2 5 ⁄8" 19' 7 1 ⁄8"12 17' 8 3 ⁄8" 21' 4 1 ⁄2"13 19' 2" 23' 1 7 ⁄8"14 20' 7 3 ⁄4" 24' 11 1 ⁄4"15 22' 1 3 ⁄8" 26' 8 5 ⁄8"16 23' 7 1 ⁄8" 28' 6"17 25' 0 3 ⁄4" 30' 3 3 ⁄8"18 26' 6 1 ⁄2" 32' 0 3 ⁄4"19 28' 0 1 ⁄8" 33' 10 1 ⁄8"20 29' 5 7 ⁄8" 35' 7 1 ⁄2"21 30' 11 1 ⁄2" 37' 4 7 ⁄8"22 32' 5 1 ⁄4" 39' 2 1 ⁄4"23 33' 10 7 ⁄8" 40' 11 5 ⁄8"24 35' 4 5 ⁄8" 42' 9"25 36' 10 1 ⁄4" 44' 6 3 ⁄8"Common<strong>Rafter</strong>Length36Hip or Val.<strong>Rafter</strong>LengthRun In.1⁄23⁄4" 7⁄8"1 1 1 ⁄2" 1 3 ⁄4"1 1 ⁄2 2 1 ⁄4" 2 5 ⁄8"2 3" 3 1 ⁄2"2 1 ⁄2 3 5 ⁄8" 4 1 ⁄2"3 4 3 ⁄8" 5 3 ⁄8"3 1 ⁄2 5 1 ⁄8" 6 1 ⁄4"4 5 7 ⁄8" 7 1 ⁄8"4 1 ⁄2 6 5 ⁄8" 8"5 7 3 ⁄8" 8 7 ⁄8"5 1 ⁄2 8 1 ⁄8" 9 3 ⁄4"6 8 5 ⁄8" 10 5 ⁄8"6 1 ⁄2 9 3 ⁄8" 11 1 ⁄2"7 10 1 ⁄8" 12 3 ⁄8"7 1 ⁄2 10 7 ⁄8" 13 1 ⁄4"8 11 5 ⁄8" 14 1 ⁄8"8 1 ⁄2 12 1 ⁄4" 15 1 ⁄8"9 13" 16"9 1 ⁄2 13 3 ⁄4" 16 7 ⁄8"10 14 1 ⁄2" 17 3 ⁄4"10 1 ⁄2 15 1 ⁄4" 18 5 ⁄8"11 16" 19 1 ⁄2"11 1 ⁄2 16 3 ⁄4" 20 3 ⁄8"SpacingIn.Jack <strong>Rafter</strong>Length1 1 1 ⁄2"2 3"3 4 3 ⁄8"4 5 7 ⁄8"5 7 3 ⁄8"6 8 7 ⁄8"7 10 3 ⁄8"8 11 3 ⁄4"9 1' 1 1 ⁄4"10 1' 2 3 ⁄4"11 1' 4 1 ⁄4"12 1' 5 3 ⁄4"13 1' 7 1 ⁄8"14 1' 8 5 ⁄8"15 1' 10 1 ⁄8"16 1' 11 5 ⁄8"17 2' 1 1 ⁄8"18 2' 2 1 ⁄2"19 2' 4"20 2' 5 1 ⁄2"21 2' 7"22 2' 8 3 ⁄8"23 2' 9 7 ⁄8"24 2' 11 3 ⁄8"<strong>Rafter</strong>ThicknessMiter Allowance forHip and Valley <strong>Rafter</strong>s<strong>Rafter</strong>DepthBottomAllowance1 1 ⁄2" 1 1 ⁄8" 3 1 ⁄2" 3 13 ⁄16"1 5 ⁄8" 1 3 ⁄16" 5 1 ⁄2" 5 15 ⁄16"1 3 ⁄4" 1 5 ⁄16" 7 1 ⁄4" 7 7 ⁄8"1 7 ⁄8" 1 3 ⁄8" 9 1 ⁄4" 10"
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