It is the form most commonly used by the navy.
Roof framing details.
The rafters are usually positioned directly above the wall studs.
Common types of roofs and basic framing terms.
Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to.
Most roofs utilize 16 inch spacings for strength and rigidity.
Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.
Details for conventional wood frame construction.
An example of each is shown in figure 2 1.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
The roof sheathing consisted of inch thick wide pine boards nailed to the purlins and thick enough to resist much sagging.
Framing a roof is the last step in framing new construction.
The substructure to which the metal panels are fastened must be properly spaced and sufficiently thick to provide a roof or wall system able to meet required design loads.
Transfers the loadof the roof through the raftersto walls below.
The rise or height of the roof at its peak is the altitude of the triangle.
It is simple in design economical to construct.
A 2 nominal lumber thickness provides the maximum pullout values for both screws and nails when the fasteners penetrate a minimum of 1 into the wood.
If you plan to have eaves to protect the shed walls make sure you add the extra length when measuring the rafters.
The first approach to achieving a strong durable struc ture involving economical use of materials is to follow a basic modular plan for layout and attachment of framing members.
Parts of a roof.
While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.
Needed to tie the roof together where the rafters are framed at an angle to each other.
And the line length measurement from the roof peak to the building wall is the hypotenuse.
Below is a sketch of the original roof wall structural details for this building.
Rafters act more like the top chord of a roof truss than as a roof joist.
The point at which all the raftersare attached to.
The original roof was built using purlins beams extending between gable ends.
A ridge board is a horizontal member of the roof frame.
The run or half the building span is the base of the triangle.
In a rafter roof all of these components are required to provide a stable roof.
Define ridge board rafter hip valley sheathing fascia soffit dormer and pitch.
Skillion shed style roof framing the skillion and shed style roofs are framed with a single slope 2 4 or 2 6 or thicker rafters spanning from the low wall to the high wall.
Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters.
Label and identify the parts of a.
Gable a gable roof has a ridge at the center and slopes in two directions.
Wood construction data 1.
