Trèteaux Angles: R8-DP
R8-DP = Tilted Hip Rafter Slope Angle on DP Side
Hip-Valley Roof Ratios Angle Formulas
- R8-DP = arctan( tan ( Hip Rafter Backing Angle) ÷ tan (Jack Rafter Side Cut Angle ))
- R8-DP = arctan( tan ( C5m ) ÷ tan ( P2m ))
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.