How Far Apart Should Roof Rafters Be On A Shed

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

How far apart should roof rafters be on a shed.

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. Repeat the process for your other rafters. Depending on the size of your structure you will need to cut several or many more. 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.

The spacing between rafters in a given building is part of the engineering calculations that determine the required structure of the roof. For standard shed roof rafter spacing see rafter span chart. Once you ve calculated the number of trusses you will need you should purchase the lumber. Putting the trusses into place.

At this point you ve cut 1 roof rafter. The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length. To determine how far apart to set rafters measure the width of the metal panel and then the width of the first hill and valley of the panel. Wider panels allow for greater spacing between rafters.

Both of these are for light roof loads. Other relevant factors include the type of wood being used for the rafters the size of the rafters and the load that the rafters need to support. An syp rafter can span 11. 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.

If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. An syp rafter can span 8. Most are spaced between 18 26 inches apart.

Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. For instance 2 grade 2x4s at 16 on center will span just over 9. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.

All roof rafters should be identical so follow the same steps to measure the plumb cut tail cut and birdsmouth cut.