Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house.
Frame roof design.
The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.
The gable roof hip roof gambrel roof flat roof shed roof mansard roof and many more custom roof types.
Continuing on from part 3.
The roof frame work mainly consists of purlins inferior purlin central purlin and ridge purlin ridge collar rafter and roofing battens.
Generally wherever 2 sloped planes connect other than at a peak point a valley is formed.
This is the basic problem involved in determining the length of a roof rafter a brace or any other member that forms the hypotenuse of an actual or imaginary right triangle.
The a frame is very easy to identify.
Floor beam span tables of residential structural design we will now look at roof rafter and beam design.
Roof framing depends on the type of roof you want to build.
The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof.
It s a very simple roof design and is inexpensive because the roof serves as both roof and walls.
There are several roof types.
The roof makes up much or all off the walls of the home.
Their inherently simple design makes it easy to build them and cheaper than more complex designs.
Here we have a wood framed gable roof.
If the frames are not properly constructed with adequate supports the roof can collapse.
Let s consider a basic gable wood roof framing design.
Gable roofs can be problematic in high wind and hurricane areas.
Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult.
It s steep pointed roof which extends all the way to the ground or close to the ground.
The framing square is used most frequently to find the length of the hypotenuse longest side of a right triangle when the lengths of the other two sides are known.
Framers stick building a hip roof you can learn a great deal about roof framing by understanding the concepts of framing a gable or shed roof.
In combination of roof styles a hip will connect to another part of the roof as part of the frame.
The typical use case for a warm roof is the flat roof.
A distinction is made between single shell and double shell roofs.
Roofs are basically five types.
Valleys the inverse of a ridge or lines that appear to go inward on a roof.
Another common design in the northeast is the saltbox which is a gable roof with one longer side.
High winds can also cause materials to peel away from gable roofs.