The first step in the roof framing is to make a plan and then cut the rafters pattern. The way roof rafter rises and slopes will indicate the height of the ridge board, the valley rafters length and all the other elements of a conventional roof with a frame.
Usually, the roof frames are made by professional carpenters with expertise in frame construction. In today's modern construction, roof top unit support frames are considered the best option for structure supported systems. Skill is one that is very special and requires years of training and experience gained in the field roof framing to create the best example of this. Unfortunately, the craft is dying out.
It's being replaced by popular truss roofs. Conventional framing that has existed for several centuries now get overshadowed by modern development where you get a pre-fab roof. This technique is useful when creating extra space by adding a garage, shed or similar structure with the existing structure.
Shipping costs are lower and they can work with space constraints. It is also much lighter than the truss roof. To learn more about calculating the length of rafter needed for roof framing just follow the steps outlined below.
Designing Roof Framing Rafters
A common rafter framing has several parts called the truncated tail, birdsmouth cut, plumb cut, wall stud ridge board, ceiling joists and much more. Measuring for roof rafters should start by calculating the pitch, rafter length, distance between rafters and timber size.
The overall width of the building is determined by measuring the range of rafter framing. This is the point where the rafter will sit. On the other hand, the run is half of this span measured earlier. This horizontal distance is what your rafter will run to meet the one from the opposite side.