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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23 INCH RISE 23-12 PITCH 62 1 ⁄2 DEGREESCommon<strong>Rafter</strong>LengthHip or Val.<strong>Rafter</strong>LengthRun Ft.1 2' 2" 2' 4 5 ⁄8"2 4' 3 7 ⁄8" 4' 9 1 ⁄8"3 6' 5 7 ⁄8" 7' 1 3 ⁄4"4 8' 7 3 ⁄4" 9' 6 3 ⁄8"5 10' 9 3 ⁄4" 11' 10 7 ⁄8"6 12' 11 5 ⁄8" 14' 3 1 ⁄2"7 15' 1 5 ⁄8" 16' 8 1 ⁄8"8 17' 3 1 ⁄2" 19' 0 5 ⁄8"9 19' 5 1 ⁄2" 21' 5 1 ⁄4"10 21' 7 3 ⁄8" 23' 9 7 ⁄8"11 23' 9 3 ⁄8" 26' 2 3 ⁄8"12 25' 11 1 ⁄4" 28' 7"13 28' 1 1 ⁄4" 30' 11 5 ⁄8"14 30' 3 1 ⁄4" 33' 4 1 ⁄8"15 32' 5 1 ⁄8" 35' 8 3 ⁄4"16 34' 7 1 ⁄8" 38' 1 3 ⁄8"17 36' 9" 40' 5 7 ⁄8"18 38' 11" 42' 10 1 ⁄2"19 41' 0 7 ⁄8" 45' 3 1 ⁄8"20 43' 2 7 ⁄8" 47' 7 5 ⁄8"21 45' 4 3 ⁄4" 50' 0 1 ⁄4"22 47' 6 3 ⁄4" 52' 4 7 ⁄8"23 49' 8 5 ⁄8" 54' 9 3 ⁄8"24 51' 10 5 ⁄8" 57' 2"25 54' 0 1 ⁄2" 59' 6 5 ⁄8"Common<strong>Rafter</strong>Length46Hip or Val.<strong>Rafter</strong>LengthRun In.1⁄2 1 1 ⁄8" 1 1 ⁄4"1 2 1 ⁄8" 2 3 ⁄8"1 1 ⁄2 3 1 ⁄4" 3 5 ⁄8"2 4 3 ⁄8" 4 3 ⁄4"2 1 ⁄2 5 3 ⁄8" 6"3 6 1 ⁄2" 7 1 ⁄8"3 1 ⁄2 7 5 ⁄8" 8 3 ⁄8"4 8 5 ⁄8" 9 1 ⁄2"4 1 ⁄2 9 3 ⁄4" 10 3 ⁄4"5 10 3 ⁄4" 12"5 1 ⁄2 11 7 ⁄8" 13 1 ⁄8"6 13" 14 1 ⁄4"6 1 ⁄2 14 1 ⁄8" 15 1 ⁄2"7 15 1 ⁄8" 16 5 ⁄8"7 1 ⁄2 16 1 ⁄4" 17 7 ⁄8"8 17 3 ⁄8" 19"8 1 ⁄2 18 3 ⁄8" 20 1 ⁄4"9 19 1 ⁄2" 21 3 ⁄8"9 1 ⁄2 20 5 ⁄8" 22 5 ⁄8"10 21 5 ⁄8" 23 3 ⁄4"10 1 ⁄2 22 3 ⁄4" 25"11 23 3 ⁄4" 26 1 ⁄4"11 1 ⁄2 24 7 ⁄8" 27 3 ⁄8"SpacingIn.Jack <strong>Rafter</strong>Length1 2 1 ⁄4"2 4 3 ⁄8"3 6 1 ⁄2"4 8 5 ⁄8"5 10 3 ⁄4"6 1' 1"7 1' 3 1 ⁄8"8 1' 5 1 ⁄4"9 1' 7 1 ⁄2"10 1' 9 5 ⁄8"11 1' 11 3 ⁄4"12 2' 2"13 2' 4 1 ⁄8"14 2' 6 1 ⁄4"15 2' 8 3 ⁄4"16 2' 10 5 ⁄8"17 3' 0 3 ⁄4"18 3' 2 7 ⁄8"19 3' 5 1 ⁄8"20 3' 7 1 ⁄4"21 3' 9 3 ⁄8"22 3' 11 1 ⁄2"23 4' 1 3 ⁄4"24 4' 3 7 ⁄8"<strong>Rafter</strong>ThicknessMiter Allowance forHip and Valley <strong>Rafter</strong>s<strong>Rafter</strong>DepthBottomAllowance1 1 ⁄2" 1 5 ⁄8" 3 1 ⁄2" 6 11 ⁄16"1 5 ⁄8" 1 3 ⁄4" 5 1 ⁄2" 10 9 ⁄16"1 3 ⁄4" 1 7 ⁄8" 7 1 ⁄4" 13 7 ⁄8"1 7 ⁄8" 2" 9 1 ⁄4" 17 3 ⁄4"