Shed Roof Rafter Span

Live load 20 lbs ft 2 956 n m 2.

Shed roof rafter span.

2 4 rafters can span up to 7. If you look at the rafter span chart you ll notice that 2x4s can be used for rafters on spans up to 11. 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. 2x4 span 8 feet with a 20 lbs psf live 10 dead load.

2 are indicated below. Shed roof a shed roof slopes in one direction only. Not need to waste wood boys its not like it grows on trees. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. 1 in 25 4 mm. Easy rafters is designed to calculate shed roofs that are framed to a ledger board nailed against a vertical wall not freestanding shed roofs supported by walls at both ends. For light load roofs 24 o c.

Rafter length using angle v r 2cos a rafter length using pitch v r 2 sqrt 1 p 2 where v overhang r roof span p pitch. Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. Use our online rafter length calculator to quickly compute the length of the shed roof rafter by entering the measurements of overhead length of roof span pitch or angle. So a 2x4 as a rafter no engineering plate to ridge is good for a shed 16 span at 2 foot centers amusing a center ridge.

1 psf lb f ft 2 47 88 n m 2. Anything beyond that you are looking at using 2x6s for most sheds. 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.

For heavy loads 2x4s can span up to 5. 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. Also available for the android os. Why not just use 1 2 ply so the h clips and other roffing products work with the roof like drip cap and so on.

That alone is over kill. 1 ft 0 3048 m. Live load is weight of furniture wind snow and more. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.