Advanced framing design considerations two foot module design building length width and roof pitch in 2 foot increments to make the best use of common sheet good sizes.
Framin roof layout 2 foot on center.
Now that you have an idea about the materials you ll need as well as any mistakes you ll need to be wary of making it s time to get to work on the wall layout.
The pros of using roof trusses instead of stick framing.
The rise or height of the roof at its peak is the altitude of the triangle.
Pricing roof trusses.
The pros of using roof trusses drastically outweigh the pros of stick framing.
Continuing on from part 3.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Because your layout is based on the center of the material these minor differences are split equally to both sides.
The run or half the building span is the base of the triangle.
Here we have a wood framed gable roof.
This technique will reduce material use labor and waste as many products come in multiples of 2 feet.
Let s consider a basic gable wood roof framing design.
Structurally in most cases exterior wall framing can easily be 24 in.
This means from the exact center of one stud to the exact center of the adjacent stud is 16 or 24 inches.
Roof framing rafter layout.
How to layout your framing to 16 on center.
This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement.
Industry standard increments typically either 12 16 or 24 inches apart.
Sure there may be an instance where stick framing is your only option and that is understandable.
For example with proper planning the entire cutoff from a center.
The exception according to the 2015 irc is 2 6 walls supporting two full floors plus a roof assembly above or 2 4 walls supporting one floor plus a roof assembly above zip sheathing can typically be installed either vertically or horizontally.
How to order trusses.
Now that the background is out of the way let s look at how you actually go about applying this information in your framing.
Pros of using roof trusses instead of stick framing.
Again we ll use a stud wall as an example here but this can be applied to anything else such as floor joists.
The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.
These spacing intervals are measured on center meaning that the.
If you use on center spacing it doesn t matter if the material thickness varies a bit.
Studs wall framing members are placed on either 16 inch or 24 inch centers.
Floor beam span tables of residential structural design we will now look at roof rafter and beam design.
A 2 x 4 should be 1 1 2 inch thick but often the actual thickness may be 1 3 8 or 1 9 16 inches.
