Half Span |
mm |
|---|---|
Overhang |
mm |
Rafter Thickness |
mm |
Ridgeboard Thickness |
mm |
Total |
Birdsmouth |
|
|---|---|---|
Rafter |
- | - |
End Jack |
- | - |
Hip & Valley |
- | - |
Lengths provided factor deductions for rafter and ridge thickness and addition of the specified overhang.
Rafter
Hip
Plumb |
Side |
|
|---|---|---|
Rafter & Creeper |
- | - |
Hip |
- | - |
Down |
Side |
|
Purlin |
- | - |
The 100 × ＿ mm values can be scribed to create a diagonal line to set your bevel angle.
Spacing |
Length Difference |
Hip Overlap |
|---|---|---|
| mm | - | - |
|
Distance is measured from short point to short point i.e. measure from the inside of the centering rafter or end jack to the short side of the creeper. Calculations for all creepers are provided below. |
||
Distance |
Total |
Birdsmouth |
|---|---|---|
| - | - | - |
The Oblique Hip Guide is a step-by-step guide that will help you with calculating oblique hip lengths.