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Rafter reference
Every standard pitch a framer will run into, with angle, slope percent, rafter multiplier, and the exact Speed® Square layout method for each one. Pick a pitch to see the full reference.
1/12
4.76° · 8.33% · ×1.004
2/12
9.46° · 16.67% · ×1.014
3/12
14.04° · 25% · ×1.031
4/12
18.43° · 33.33% · ×1.054
5/12
22.62° · 41.67% · ×1.083
6/12
26.57° · 50% · ×1.118
7/12
30.26° · 58.33% · ×1.158
8/12
33.69° · 66.67% · ×1.202
9/12
36.87° · 75% · ×1.250
10/12
39.81° · 83.33% · ×1.302
11/12
42.51° · 91.67% · ×1.357
12/12
45° · 100% · ×1.414
13/12
47.29° · 108.33% · ×1.474
14/12
49.4° · 116.67% · ×1.537
15/12
51.34° · 125% · ×1.601
16/12
53.13° · 133.33% · ×1.667
17/12
54.78° · 141.67% · ×1.734
18/12
56.31° · 150% · ×1.803
