Roof Joist Spacing Shed

There is no standard spacing it depends on what size of rafters you want to use and the span of your shed.

Roof joist spacing shed.

Typically spacing the studs of a normal sized shed at 24 inches will meet county and municipal codes. Skillion shed style roof framing. Metal roofs and pole buildings. If you get premium kiln dried lumber then you could span 10 5 with the same size of lumber and rafter spacing.

2x8s are used frequently for these projects. For instance 2 grade 2x4s at 16 on center will span just over 9. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof. A roof joist is always spaced no more than 16 inches apart from another roof joist.

If the roof is not completely square you can decrease the space between joists but never increase the space. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. The tables below give maximum spans for rafters and beams.

For light load roofs 24 o c. Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. 2 8 s come standard at 1 inch thick. In many circumstances 16 inches would be your standard spacing for shed floor joist but this is just a rough guideline.

The figures are based on quality materials. In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. The lower the roof the lower the ceiling you have to deal with when you are inside the shed. Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span.

If you plan to have eaves to protect the shed walls make sure you add the extra length when measuring the rafters. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. For heavy loads 2x4s can span up to 5. 2 4 rafters can span up to 7.

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. The third option is to build a normal sized shed. The smallest beams for patio covers are typically 4 by 6. Two options that arise could be your wider 24 and your narrower 12 options for spacing.

You can increase the number of studs but again that means higher shed stud materials costs.