Select a roof pitch.
Plumb cut roof.
Birdsmouth which consists of two cuts a horizontal seat cut and a vertical shoulder cut.
On the properties palette for rafter cut select plumb cut two cut plumb or two cut square.
Locate these rafter terms in the illustration below.
For two cut plumb and two cut square specify a value for fascia depth between zero and the thickness of the roof.
The top cut face of a rafter that is designed to butt vertically against a ridgeboard.
Make the bottom plumb cut on the ground.
Tail cut which may be cut plumb or square depending on how the eaves are detailed.
Plumb cut typically called the ridge cut at the top end of the rafter.
The traditional method has been rise inches 12 run inches.
Sawyers are the folks who operate the component saws which precision hopefully cut all of the components prior to assembly.
Determine a thickness for the ridge and use the drop down to select it.
If it rises onlyread more.
How to plumb cut rafter tails.
Depending on the size of your structure you will need to cut several or many more.
At this point you ve cut 1 roof rafter.
The length of the rafter is given from the long point of the ridge cut at the top down along the top edge the board to the same plumb cut on the rafter s notch.
The results are automatically fired as soon as any of the values are entered or altered.
This is a mitered plumb cut 4 in 12 on this roof if you re working with finished trim.
When framing a gable or hip roof the final step is cutting the rafter tails for fascia board.
In the drawing area select the roof.
All roof rafters should be identical so follow the same steps to measure the plumb cut tail cut and birdsmouth cut.
Some architectural designs call for plumb or vertical cuts as opposed.
Roof angle overhang level rafter depth rafter thick birds mouth plumb birds mouth seat.
Roof pitch is measured in a rise to run ratio with the vertical rise always shown first.
Square cut or plumb cut.
Back in the 70 s when i first entered the prefabricated metal connector plated wood truss industry i was a sawyer.
After creating a roof change the style of the eaves by specifying the rafter cut.
So if your roof is a 45 degree angle that is for every 12 along the horizontal run it rises 12 it s a 12 12 pitch.
Plumb cut definition is a cut in a vertical plane.
Print full scale rafter plumb cut templates and birdsmouth templates.
