Maximum Span Of Roof Trusses In Ft

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

Maximum span of roof trusses in ft.

So the space between rafters can be greater without reducing the maximum span. 1 ft 0 3048 m. The heaviest joist along with the above factors will span a maximum of 23 feet 8 inches. 2x10 s or 2x12 s or i joists.

To achieve maximum indicated spans trusses may require six or more panels. Trusses with an asterisk that exceed 14 in height may be shipped in two pieces. 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. Mono used where the roof is required to. 1 psf lb f ft 2 47 88 n m 2. The same concept holds true for roof trusses.

Contact your localalpine trussmanufacturerorofficeformoreinformation. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. Live load 20 lbs ft 2 956 n m 2. 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. Live load is weight of furniture wind snow and more. 2 are indicated below. Span calculator for wood joists and rafters also available for the android os.

Dead load weight of structure and fixed loads 15 lbs ft 2. This is the most common as the typical span is 15 feet.