Trèteaux Angles: P15a-DP
P15a-DP = Adjacent Side Purlin Rafter Bevel Angle on DP Side Of Hip Rafter on Face Set in Roof Surface
Hip-Valley Roof Ratios Angle Formulas
- P15a-DP = 90 - Jack Rafter side Cut Angle
- P15a-DP = 90 - P2a
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.