Maximum Span Of Roof Trusses In Ft

Span calculator for wood joists and rafters also available for the android os.

Maximum span of roof trusses in ft.

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. Live load is weight of furniture wind snow and more. 1 in 25 4 mm.

One of the biggest advantages of floor trusses is that they can span further than conventional framing i e. Bear in mind that this span chart shows the absolute maximum span for a truss with no hvac. For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. Dead load weight of structure and fixed loads 15 lbs ft 2.

Also available for the android os. 2 are indicated below. Trusses with an asterisk that exceed 14 in height may be shipped in two pieces. 1 ft 0 3048 m.

Contact your localalpine trussmanufacturerorofficeformoreinformation. 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. 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. So the space between rafters can be greater without reducing the maximum span.

Live load 20 lbs ft 2 956 n m 2. The same concept holds true for roof trusses. Mono used where the roof is required to. Below is a chart that we use for quick reference to match floor truss height and spacing with any given span.

Bt b tc 6 6 common truss configurations for the most widely designed roof shapes. 1 psf lb f ft 2 47 88 n m 2.