Maximum Span Of Roof Trusses In Ft

1 psf lb f ft 2 47 88 n m 2.

Maximum span of roof trusses in ft.

Bear in mind that this span chart shows the absolute maximum span for a truss with no hvac. Dead load weight of structure and fixed loads 15 lbs ft 2. To achieve maximum indicated spans trusses may require six or more panels. Contact your localalpine trussmanufacturerorofficeformoreinformation.

So the space between rafters can be greater without reducing the maximum span. Also available for the android os. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. 1 in 25 4 mm.

For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. Live load 20 lbs ft 2 956 n m 2. Mono used where the roof is required to. 2 are indicated below.

This is the most common as the typical span is 15 feet. Span calculator for wood joists and rafters also available for the android os. 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. 1 ft 0 3048 m.

2x10 s or 2x12 s or i joists. Bt b tc 6 6 common truss configurations for the most widely designed roof shapes. Below is a chart that we use for quick reference to match floor truss height and spacing with any given span. 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.

Trusses with an asterisk that exceed 14 in height may be shipped in two pieces. Live load is weight of furniture wind snow and more.