Maximum Span Of Roof Trusses In Ft

The same concept holds true for roof trusses.

Maximum span of roof trusses in ft.

Below is a chart that we use for quick reference to match floor truss height and spacing with any given span. 1 in 25 4 mm. Contact your localalpine trussmanufacturerorofficeformoreinformation. To achieve maximum indicated spans trusses may require six or more panels.

1 psf lb f ft 2 47 88 n m 2. The heaviest joist along with the above factors will span a maximum of 23 feet 8 inches. Bear in mind that this span chart shows the absolute maximum span for a truss with no hvac. Live load 20 lbs ft 2 956 n m 2.

Mono used where the roof is required to. 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. Live load is weight of furniture wind snow and more.

So the space between rafters can be greater without reducing the maximum span. 2 are indicated below. 2x10 s or 2x12 s or i joists. 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.

This is the most common as the typical span is 15 feet. Dead load weight of structure and fixed loads 15 lbs ft 2. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. One of the biggest advantages of floor trusses is that they can span further than conventional framing i e.

Also available for the android os. For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems.