Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters.
Hipped roof trusses spanning 45 feet.
Spans in feet to out of bearing spans in feet to out of bearing 5 12 38 47 57 39 51 59 42 56 63 45 54 68.
Here is a layout view of the house.
Framing the hip roof.
This is a full truss which has been cut off from the apex.
So if you look at the chained measurements in the middle on the left side you will see the trusses are spaced 2 feet on center.
The measurements on truss layouts are all feet inch sixteenths.
Maximum rafter span of 16 feet.
This table is simply a sample and may not be valid for your region.
Spaced sheathing or 1x boards may be reduced slightly.
Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber.
Spans for 2x4 top chord trusses using sheathing other than plywood e g.
The spans in this table are based on a maximum supported rafter span of 16 feet where the supported span is the total horizontal distance spanned by the roof rafters divided in half not the diagonal distance or the length of the rafter.
On some roof trusses the 2 top chords extend down over the edges of the bottom chord creating a built in overhang.
Valley sets are used to form the ridge line and framing between the main and secondary roof structure and can be common dual pitch or mono shaped in their design.
Here we consider two types of hipped roofs see picture.
For a 2 000 square foot home roof truss installation typically costs between 7 200 and 12 000 you ll spend anywhere from 1 50 to 4 50 per square foot for materials alone or between 35 and 150 though extremely long and complex types can reach 400 each labor runs anywhere from 20 to 75 per hour ranges in both materials and labor are due to location size and roof complexity.
Your top chords can protrude beyond the bottom chord anywhere from 1 3 feet 0 30 0 91 m.
They can be any variety of trusses but they don t come with a heel.
These trusses the meet building code criteria as specified by structural building components of america sbca and the truss plate institute tpi.
If you think you d prefer an overhang style truss adjust the measurements for your top chords accordingly.
Now that we know the names of all the various kinds of hip roof trusses let us move on.
This could be any other truss provided that the support point is located within the span and not at the heel.
The trusses on the ends of the house will be drop top gable trusses.
Roof truss span tables alpine engineered products 15.
Valley members may also be used for decorative gables dormers porches and more.
They are designed at a 4 12 pitch to be spaced 2 foot on center.
