Roof Rafter Calculation Form
Provide the details below to calculate roof rafter requirements for your construction project.
Project Name
*
Roof Style
*
Please Select
Gable
Hip
Shed
Mansard
Gambrel
Other
Building Width (Span) (ft)
*
Building Length (ft)
*
Roof Pitch (e.g., 4:12)
*
Please Select
3:12
4:12
5:12
6:12
8:12
10:12
12:12
Other
Rafter Span or Run (ft)
*
Rafter Overhang (inches)
*
Rafter Material/Species
*
Please Select
Douglas Fir
Southern Pine
Hem-Fir
Spruce-Pine-Fir
Other
Rafter Spacing (inches on center)
*
Please Select
12
16
19.2
24
Other
Desired Rafter Size (optional)
Please Select
2x6
2x8
2x10
2x12
Other
Calculation Notes or Result Request
Submit
Should be Empty: