Trèteaux Angles: P13a-DP
P13a-DP = Adjacent Side Purlin Rafter Miter Angle on DP Side Of Hip Rafter on Face Perpendicular To Roof Surface, Lower Claw Angle
Hip-Valley Roof Ratios Angle Formulas
- P13a-DP = arctan( sin (90 - Jack Rafter Side Cut Angle ) ÷ tan ( Valley Sleeper Saw Blade Bevel Angle ))
- P13a-DP = arctan( sin (90 - P2a ) ÷ tan ( VSB ))
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.