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.
Roof framing notes.
Refer to building elevations roof plan for existing new final roof configuration.
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.
Rafters act more like the top chord of a roof truss than as a roof joist.
Transfers the loadof the roof through the raftersto walls below.
The gable roof hip roof gambrel roof flat roof shed roof mansard roof and many more custom roof types.
There are several roof types.
The roof framing must support the roof decking and sheathing and resist loads applied to the sheathing and transfer loads vertically to support walls or frames.
Similarly hip and valley rafters provide the point of connection for roof rafters framed at angles.
Roof framing plan notes.
Roof sheathing shall be 15 32 apa rated sheathing with a panel index of 24 0.
Typical floor sheathing shall be 23 32 apa sturd i floor with a panel index of 40 20.
In field unless noted otherwise on plans.
Ridge beam sits below the rafters.
At panel edges and 12 o c.
Roof framing depends on the type of roof you want to build.
The ridge board is non load bearing and merely provides the point of connection for the opposing rafters and is only a nominal 1 thick.
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It must meet the local codes for thickness at least 3 8 which is also based on the rafter or truss spacing.
Plywood or osb is the most common materials used for the roof sheathing.
Unit of run is a fixed unit of measure always 12 inches for the common rafter.
Asphalt shingle can be installed on a pitch of 2 over 12 or greater.
The pitch of the roof determines the roofing material you can use.
In order to maintain the triangle shape there are specific requirements for how to fasten the corners of the triangle together.
Features associated with basic roof framing terms are shown in figure 2 2.
Span is the horizontal distance between the outside top plates or the base of two abutting right triangles.
Nail to framing with 8d common nails at 6 o c.
Roof framing is the next building component found within the load path.
The point at which all the raftersare attached to.
