To measure out your cuts you ll need a pencil a framing square and movable stair gauges to make accurate cuts.
Hand cut roof framing.
The rise or height of the roof at its peak is the altitude of the triangle.
When the square is held with the blade in the left hand the tongue in the right hand and the heel pointed away.
The run or half the building span is the base of the triangle.
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The roof rafters provide integral structural support to the roof.
Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter.
Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.
Snip the two sides.
Input the pitch of the roof that you calculated above we ll use 7 12 for reference throughout on the framing square.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Roof framing rafter layout from one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it.
This will the first point of the rafter measurement line.
Gradually being replaced by the term cut cut is the angle that the roof surface makes with a horizontal.
Then bend the sheet back and forth a few times to snap it.
The angle of the cuts made on the pitch end of the rafters will depend upon the rise you ve calculated.
Measure down y height from the long point of the rafter cut and make a mark.
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If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters.
And the line length measurement from the roof peak to the building wall is the hypotenuse.
Roof framing in this chapter we will introduce you to the fundamentals of roof design and construction.
You can use the same trick to cut metal studs.
Clamp or hold a straightedge or square along the cutting marks and score a line with the tip of a sharp utility knife blade.
