Shed Roof Maximum Span

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

Shed roof maximum span.

For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. For 2x10s or 2x8s. The new pitch will be on the order of 3 12. An syp rafter can span 11.

The pitch and span of your roof will dictate how long of a rafter you ll need use maximum span calculator to help you find your rafter size. Live load is weight of furniture wind snow and more. Dead load weight of structure and fixed loads 15 lbs ft 2. My plan is to build a shed roof.

Also available for the android os. If you live in an area that requires a shed roof rafter to support a heavy load then an spf rafter can only span 7. 2 are indicated below. The spans in this table are based on a maximum supported rafter span of 16 feet where the supported span is the total horizontal distance spanned by the roof rafters divided in half not the diagonal distance or the length of the rafter.

For a porch roof the beam needs to be sized according to the maximum snow loads in your area and you must know enough about the porch design to determine how the load will be distributed and over what distance the beam will carry the load. With the posts set 10 from the house what is the maximum beam span between the posts. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. F stands for the beam.

This table is simply a sample and may not be valid for your region. If you look at the rafter span chart you ll notice that 2x4s can be used for rafters on spans up to 11. 1 psf lb f ft 2 47 88 n m 2. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

As mentioned above a 2 4 spf shed roof rafter can span 11. The total load is 4 000 pounds. Both of these are for light roof loads. Maximum rafter span of 16 feet.

The beam spans the 10 foot width of the roof.