Tips
Topic: Roof Framing.
This chart gives the Hip angles for the 12 most common roof pitches.
Hip Chart
Roof
Pitch |
Hip
Level (Seat) Cut Angle |
Hip
Plumb Cut Angle |
Hip
Drop |
Hip
Back Bevel Angle |
Rise |
hip_angle=tan-1(pitch/(12*sqrt(2))) |
plumb_angle=90-hip_angle |
(Rise*
1/2HT)/16.97 |
BA=tan-1(sin(hip_angle)) |
1-1/2" Thick |
3" Thick |
||||
1/12 |
3.37° |
86.63° |
.04419" | .08839" | 3.36° |
2/12 |
6.72° |
83.28° |
.08839" | .17670" | 6.67° |
3/12 |
10.02° |
79.98° |
.13258" | .26517" | 9.87° |
4/12 |
13.26° |
76.74° |
.17678" | .35356" | 12.92° |
5/12 |
16.42° |
73.58° |
.22097" | .44195" | 15.78° |
6/12 |
19.47° |
70.53° |
.26517" | .53035" | 18.43° |
7/12 |
22.42° |
67.58° |
.30936" | .61873" | 20.88° |
8/12 |
25.24° |
64.76° |
.35356" | .70713" | 23.10° |
9/12 |
27.94° |
62.06° |
.39776" | .79552" | 25.10° |
10/12 |
30.51° |
59.49° |
.44195" | .88391" | 26.92° |
11/12 |
32.95° |
57.05° |
.48615" | .97230" | 28.54° |
12/12 |
35.25° |
54.75° |
.53034" | 1.0606" | 29.99° |
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1997-2008
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