Garage Roof Support Beams Spacing

Roof joists are an important feature of roof installation that not only support the weight of a roof but also helps distribute the weight.

Garage roof support beams spacing.

Common spacing for trusses on this type of building is often between 2 and 4 feet but trusses built with advanced designs may allow spacing as great as 8 or 12 feet. Depending on the roof design and the roof rafter spacing. If there is also a beam in the middle of the roof divide the total load by three. This structural member makes sure that the weight is spread evenly over the entire roof.

Divide the total load according to how many supporting beams the roof will have. Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope. Window door garage door headers supporting roof wall floor loads. The roof joists are attached to beams and are placed parallel to each other and lined up horizontally.

In making your choice consider how you will insulate your insulate your roof. Includes size and spacing tables for load bearing and links to related articles. Use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. The table states that 2 x 6 rafters spaced 16 inches on center o c can span a maximum distance of 13 feet 5 inches.

Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications. Another option are 2 x 8 rafters spaced 24 inches o c. Window door garage door headers supporting roof loads only. The same concept holds true for roof trusses.

Building codes such as the icc s 2012 international building code section 2308 10 roof and ceiling framing typically specify that where rafter ties are used they are required at intervals ranging from 12 to 24 o c. Although you can construct a garage using thicker stronger joists 2 inch by 6 inch joists are sufficient for most garages even if you intend to build an attic storage area above your garage. The network connects to the angled roof supports rafters which. If one side of the roof is supported by the house and the other side is supported by the beam divide the total load by two as the beam is only supporting half of the roof.

Fine homebuilding notes that 2 inch by 6 inch garage joists will support a weight of up to 50 pounds per square foot.