Maximum Span Of Roof Trusses In Ft

Live load is weight of furniture wind snow and more.

Maximum span of roof trusses in ft.

So the space between rafters can be greater without reducing the maximum span. The same concept holds true for roof trusses. Live load 20 lbs ft 2 956 n m 2. Dead load weight of structure and fixed loads 15 lbs ft 2.

Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet. 2x10 s or 2x12 s or i joists. Bear in mind that this span chart shows the absolute maximum span for a truss with no hvac. The heaviest joist along with the above factors will span a maximum of 23 feet 8 inches.

This is the most common as the typical span is 15 feet. Bt b tc 6 6 common truss configurations for the most widely designed roof shapes. Trusses with an asterisk that exceed 14 in height may be shipped in two pieces. The size of a timber truss is an important part of designing a building and while there are no set maximum sizes there are some best practices.

Contact your localalpine trussmanufacturerorofficeformoreinformation. 1 ft 0 3048 m. Also available for the android os. 1 psf lb f ft 2 47 88 n m 2.

For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. 1 in 25 4 mm. Span calculator for wood joists and rafters also available for the android os. To achieve maximum indicated spans trusses may require six or more panels.

Below is a chart that we use for quick reference to match floor truss height and spacing with any given span. 2 are indicated below.