| Height Above PLate Table -- 7 / 12 | Rafter Seat Cut Length -- Each rows shows seat cut length with H.A.P for material size | ||||||||||
| Material | Plumb height | 1 1/2 | 2 | 2 1/2 | 3 | 3 1/8 | 3 1/2 | 4 | 5 1/8 | 5 1/2 | 6 3/4 |
| 2x4 | 4.05 | 3.18 | 2.89 | 2.59 | 2.30 | 2.23 | 2.01 | 1.72 | 1.06 | 0.84 | 0.11 |
| 2x6 | 6.37 | 5.49 | 5.20 | 4.91 | 4.62 | 4.54 | 4.33 | 4.03 | 3.38 | 3.16 | 2.43 |
| 2x8 | 8.68 | 7.81 | 7.52 | 7.22 | 6.93 | 6.86 | 6.64 | 6.35 | 5.69 | 5.47 | 4.75 |
| 2x10 | 11.00 | 10.12 | 9.83 | 9.54 | 9.25 | 9.18 | 8.96 | 8.66 | 8.01 | 7.79 | 7.06 |
| 2x12 | 13.31 | 12.44 | 12.15 | 11.86 | 11.56 | 11.49 | 11.27 | 10.98 | 10.32 | 10.11 | 9.38 |
| 1 3/4 X 11 7/8 | 13.75 | 12.87 | 12.58 | 12.29 | 12.00 | 11.92 | 11.71 | 11.41 | 10.76 | 10.54 | 9.81 |