Roof Joist Thickness

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Roof joist thickness.

Depending on loads and spans c joists are typically spaced at 12 16 19 2 or 24 on center spacing. Though there is no standard joist size for the ceilings in all buildings most average homes use ceiling joists in a board size of 2 by 6 inches. Ceilings directly applied to the bottom edge of the floor members or equivalent 1x or 2x strapping is a. The range of joist sizes used in homes varies though between 2 by 4 inches and 2 by 12 inches.

Also available for the android os. Structural track usually in the same gauge as the joist is used as rim or band enclosures. 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. Thickness generally improves floor.

Joist to girder attachments are normally supported with joist hangers easyclip e series or s series support clips. There are several variables to consider when determining the proper rafter size. Standard asphalt shingles add very little thickness to the roof because a standard three tab shingle is about 3 16 inch thick. Usually 400 450 or 600mm but any value can be used up to 610mm max 1 2 timber strength class and joist size automatically calculate sizes suitable for supporting the loads below.

In making your choice consider how you will insulate your insulate your roof. When installed however the shingles overlap doubling the thickness. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. Loads will vary with the.

This is the distance between joist centres. Another option are 2 x 8 rafters spaced 24 inches o c. Featuring trus joist tji joists for floor and roof applications.