For most load bearing requirements a roof truss will need to be placed every two feet along the walls.
Residential roof framing plan.
Continuing on from part 3.
Here we have a wood framed gable roof.
Similar prescriptive design aids and efficient framing practices can be found in cost effective home building.
Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters and panel sheathing products.
Floor beam span tables of residential structural design we will now look at roof rafter and beam design.
You will then have to choose between two very different types of roof framing stick framing vs.
Gable a gable roof has a ridge at the center and slopes in two directions.
The run or half the building span is the base of the triangle.
The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.
Common types of roofs and basic framing terms.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Also different architectural styles will use the same type of roof.
Roof framing plans are usually required for complicated residential roof shapes and for most commercial projects.
Depending on how wide the home is you can divide the total length in feet by two to determine how many trusses will be needed.
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.
It is the form most commonly used by.
Let s consider a basic gable wood roof framing design.
For high wind conditions prescriptive guidelines for design and construction may be found in the wood.
Framing must transfer all gravity uplift and lateral loads to the foundation.
Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss.
In buildings including residential structures framing systems typically consist of the roof structure that supports the roof.
A roof framing plan shows the size and direction of the construction 425 figure 20 1 the shape of the roof can play an important role in the design of the structure as seen in this home by the architect robert roloson.
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.
A design and construction handbook nahbrc 1994.
Deck exterior and interior load bearing walls beams girders posts and floor framing.
As you can see the initial plan for framing your roof needs to take into account several key variables such as the shape of the roof and any relevant community building codes.
An example of each is shown in figure 2 1.
