Gable Roof Trusses Design

A pitch truss with two sets of different sloping sides.

Gable roof trusses design.

A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall. This is similar to the gable shed because the trusses will be in two different cuts because of the two different angles. Squaring building lines example use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Shop our wide selection of stock and custom roof trusses to complete your building project.

A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. Finally there is a barn type or gambrel shed roof. A truss for a gable roof on one side of your home for example might need to be 15 feet 4 6 m long and 4 6 feet 1 2 1 8 m tall. Gable room in attic 1 post frame common 4.

As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss. They re often placed at the front and back of each other with the front pitch usually steeper. Gable trusses are more expensive than common structural trusses because more lumber is required. Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters.

The gable shed has a roof like a house so the roof trusses will have a peak in the middle. Wood roof trusses bring the bottom chord of the truss all the way to the outside of the wall include a small vertical cut butt cut and angles back against the top chord of the truss. For a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. The truss sides will be equal in length and width to fit equally on the shed walls.

Gable roof framing calculator plan diagram with full dimensions. The truss is a framework consisting of rafters posts and struts which supports your roof. 2 variations available 24 6 12 residential truss. The top chord smoothly extends out past the wall to create the overhang.