Valley Jack Rafter
A sawn timber rafter that runs from the ridge board down to the valley rafter, cut square at the ridge and mitred against the valley rafter, with no bird's mouth.
Details
Category: Carports › Freestanding and Lean-To Carports › Roof Members
By Huu Khanh Nguyen · Updated November 5, 2026
Parameters
| Name | Default | Unit |
|---|---|---|
| Run | 1800 | mm |
| Pitch | 25 | ° |
| Depth | 190 | mm |
| Length | axisRun | mm |
| Thickness | 45 | mm |
| Height | slope * axisRun + bandHeight | mm |
| Slope | Math.tan(pitch * Math.PI / 180) | |
| Axis Run | run + sizeY / 2 | mm |
| Band Height | depth * Math.sqrt(1 + slope * slope) | mm |
| Timber finish | timberSpruceSawn |