How Many Roof Trusses Do I Need

Once you enter the basic roof dimensions and enter the type of roof you will get a very accurate result telling you exactly the amount of shingles that are required to cover your new roof.

How many roof trusses do i need. Most are spaced between 18 26 inches apart. A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. The number of trusses required for a roof depends completely on the design. How many roof trusses do i need.

This equation roof truss count is used in 6 pages show calculators building or shed calculator by kurtheckman. The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length. Tell them you want two foot overhangs and a 12 inch energy heel. Usually made of wood or steel you ll find both in residential and commercial applications.

However typical roof truss spacing means that they are usually 400mm 16 inches or 600mm 24 inches from centre this means from the centre of one truss to the centre or the next truss. To determine how many trusses to create you will first need to measure both the width and the length of the structure you are building. Roof trusses have many advantages compared to regular roof rafters. Trusses cut down on construction time and meet many roof load requirements.

There are many types of trusses available so it s important that we know the type of trusses you need. Roof trusses operate as the foundation support of most any type of roof. Given your location i would recommend a design with 40 pounds per square foot psf roof live load at least 7 psf roof dead load and at least 5 psf bottom chord dead load. Basically we are asking if you need any gable trusses or not and if so the amount of gable trusses you need.

Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters. Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. The roof shingle calculator is a free estimator that serves a useful purpose during any roof repair or replacement project. The span of the trusses will be the measure from outside of stud wall to outside of stud wall.