Trèteaux Angles: R10-DP
R10-DP = Vertical Plane Rotation Angle from Plumb for Tilted Hip Rafter on DP Line
Hip-Valley Roof Ratios Angle Formulas
- R10-DP = arctan(( cos ( Hip Rafter Slope Angle) × tan (R9))) ÷ sin(Hip Rafter Slope Angle))
- R10-DP = arctan((cos(R1) × tan(R9)) ÷ sin(R1))
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.