Designing the roof 1.
Framing a roof tips.
We will go over raft.
Add the length of the overhang beyond this mark and.
Position the square at the end of the rafter board with the tongue on your left and facing away from you.
Choose a style of roof.
Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.
Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge.
Meeting current irc roof framing requirements means builders are really constructing very simple triangles using the rafters and ceiling joists because triangles are known to be the most stable shape.
The framing style of the roof refers to the actual components of each.
Stick framing combines roof rafters with ceiling joists.
While this isn t exactly framing related it s still worth mentioning.
Understand the different measurements.
The rafters are usually positioned directly above the wall studs.
By bringing the rafters closer together at 19 3 16 increments you increase the strength of the roof enough to prevent snow from crashing through your roof just like that insurance commercial guy mayhem.
Most roofs utilize 16 inch spacings for strength and rigidity.
In order to maintain the triangle shape there are specific requirements for how to fasten the corners of the triangle together.
If you want to frame a roof you ve got two important choices to make in terms of design.