Steel Roof Rafter Spacing

The typical spacing standards for residential and commercial buildings are about 1 to 2 foot.

Steel roof rafter spacing.

This is most likely the standard size that you will find on pre made roof trusses. There are two double trusses 7 apart and spaced at 12 foot centers in the middle. 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. Rafter spacing depends on the roofing panel size.

Typical standard the typical standard for the spacing on the roof trusses is 24 inches. As most building these days are using those pre made trusses on the roof 24 inches become the main size for any roofing construction when it comes to its truss installation. Configuring your metal roof batten layout access the roof using an extension ladder. Rafter spacing for metal roof.

So the space between rafters can be greater without reducing the maximum span. Do not use pressure treat wood for the purlins it will eat up the metal roofing and screws. It is always better to have a large rafter rather than be concerned with a sagging roof. Measure each section of the roof from.

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. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. 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. The same concept holds true for roof trusses.

This allows the panels to be securely attached to the rafters for maximum stability. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. Never seen anyone use 2 x 4 s always 1 x 4 s.

Keep it at 24. I want to cover the rafters and trusses with thick sheetrock then paint to hide the added insulation and wiring. The 2 x 6 rafters are spaced 24 on center the length of the barn. Twenty four inches is a common spacing of furring strips for a metal roof.