Trèteaux Angles: SR4Bm-DP
SR4Bm-DP = Prism Footprint Angle in Plan View at Eave Line Intersection
Hip-Valley Roof Ratios Angle Formulas
- SR4Bm-DP = arccos( cos(90 - Jack Rafter Side Cut Angle) × cos(R8))
- SR4Bm-DP = arccos( cos(90 - P2m) × cos(R8))
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.