Roof Trusses Design Standards

Metal plate connected wood truss roof design of their buildings.

Roof trusses design standards.

Boards may be reduced slightly. Common or standard trusses are symmetrical and have standard four inch heels. Metal plate connected trusses are used to create arches of all types. Typical roof truss spacing means that they are usually about 24 inches from centre which means at the centre of one truss there will be a two foot gap or twenty four inch gap until the centre of the next truss.

These standards are as follows. The truss plate institute tpi serves the truss industry by providing in plant third party quality assurance inspections audits guidelines on the bracing handling and safety of trusses standards development and related design and quality control publications and tools. There is a misconception that spacing trusses every 16 on center is better because it will be strong than the average 2. Girder trusses are designed to carry additional loads other than standard roof loads.

Our manufacturing process makes the most efficient use of timber and ensures minimal timber wastage. A truss with the same pitch and heel on both sides and a peak at the center is called a common truss. The standard roof truss spacing is 2. To achieve maximum indicated spans trusses may require six or more panels.

Wood trusses used in specialized applications such as agricultural and commercial buildings provide spans exceeding 25m 80. Tpi is connecting the tru. As a testament to their strength wood trusses are used in concrete formwork. Almost all residential trusses use this spacing.