Shed Roof Rafters Size

Below is an example of some of the most common sheds.

Shed roof rafters size.

Rafter span tables use these tables to determine lengths sizes and spacing of rafters based. Don t forget to cut the ends of each board to the appropriate angle to allow them to fit together at the peak. 2 4 rafters can span up to 7. The rule of thumb is that the gusset should be twice the width of the wood you use for your rafters.

Click the button to calculate the stock size needed for this job. The shed floor is needed to build the shed trusses. So roughly 7 8 long for a 2 4. You are going to cut out triangles that will cover the apex of each set of rafters.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Because the trusses will need to be built with the floor dimensions. There are many types of shed trusses because there are many types of shed designs. For 30 psf snow load 3 12 pitch roof over a 8 span the minimum rafter would be something like a 2 spruce 2x6 at 16 o c.

A lean to shed has a roof that is angled from back to front. Rafter length using pitch v r 2 sqrt 1 p 2 where v overhang r roof span p pitch. This calculator is to be used as an estimating tool only. I d strongly recommend 2x8 at 16 o c.

The difference in price isn t that much for your shed and you d have a stronger roof for those high snow events. If you re planning on building a gable roof with a pitch of 4 12 for a shed that s 200 inches 510 cm wide your rafter boards would need to be 105 3 inches 267 cm long on each side. Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. For heavy loads 2x4s can span up to 5.

As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. For an 8 10 shed one sheet of plywood should be fine. 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. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

That is your span your actual rafter length would be longer with an overhang and extra length for the cuts. For light load roofs 24 o c.