Maximum Span Of Roof Trusses In Ft

Also available for the android os.

Maximum span of roof trusses in ft.

Live load 20 lbs ft 2 956 n m 2. Bt b tc 6 6 common truss configurations for the most widely designed roof shapes. To achieve maximum indicated spans trusses may require six or more panels. 2 are indicated below.

One of the biggest advantages of floor trusses is that they can span further than conventional framing i e. 1 ft 0 3048 m. For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. 2x10 s or 2x12 s or i joists.

1 in 25 4 mm. 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. Below is a chart that we use for quick reference to match floor truss height and spacing with any given span. So the space between rafters can be greater without reducing the maximum span.

Trusses with an asterisk that exceed 14 in height may be shipped in two pieces. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. Live load is weight of furniture wind snow and more. 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.

This is the most common as the typical span is 15 feet. 1 psf lb f ft 2 47 88 n m 2. Bear in mind that this span chart shows the absolute maximum span for a truss with no hvac. Contact your localalpine trussmanufacturerorofficeformoreinformation.

Dead load weight of structure and fixed loads 15 lbs ft 2. The same concept holds true for roof trusses.