Rafter Calculator

快速找到屋頂公共及髖關節椽長度和角度又見椽子計算2。

Input Span & Pitch of your roof to quickly get bevel angles for:

Common rafter length

Common rafter Plumb Cut

Hip rafter Plumb Cut

Hip rafter length

Hip rafter backing angles

Hip rafter backing depth

Hip rafter cheek angles

Jack rafter side cut angle

Backing depth (22mm from hip centre)

Enter pitch to get rise

Enter rise to get pitch

All dimension's are taken on measuring line as shown on diagram.