Trèteaux Angles: P22a-DP
P22a-DP = Adjacent Side (Foot Cut) for Rotated Purlin Rafter Bevel Angle on DP Side Of Hip Rafter on Face Set in Roof Surface
Hip-Valley Roof Ratios Angle Formulas
- P22a-DP = arctan (cos(profile rafter slope angle) ÷ tan(timber rotation angle in plan view)) + Jack Rafter Side Cut Angle
- P22a-DP = arctan (cos(S) ÷ tan(timber rotation angle in plan view)) + P2a
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.