Rafter Spacing For Metal Barn Roof

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

Rafter spacing for metal barn roof.

It is to hot in the summer and to cold in the winter to enjoy conveting it into a mancave. The support system for the roof is comprised of ridgepole and rafters or purlins. For heavy loads 2x4s can span up to 5. Truss spacing for metal roof our neighbor just put up a pole barn w metal roof industrial grade thicker than the residential stuff used here his trusses are about 10 foot centers but he has hangered 2x6 on two foot centers between them.

Steel trusses offer increased strength faster installation and a longer life compared to wood frame pole barn trusses. Rafter and roof joist spacing is only one part of a complex roof design that works together to form a structure that meets building codes and can hold up the weight of the roof and roof load. While decking is not required for a metal roof and is often not used for shops barns or other outbuildings if a metal roof is being put onto a home or a garage the use of decking is common. But they do tend to space rafters in one of several industry standard increments typically.

A roof truss is a structural framework usually made from wood that bridges the space between the ceiling of the top level and the roof structure. Designing roof trusses for proper placement on post frame buildings. 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. When decking is present the metal panels can be attached directly to the decking and the spacing of the rafters is not critical.

These are typically spaced at certain intervals to provide the necessary support for the roof. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet. Builders aren t bound by standard rafter spacing measurements. 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.

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. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. It came with a 24 x 36 pole barn with a corrugated steel roof and a thick plastic insulation blanket on the underside of the metal at ceiling. 25 thoughts on pole barn truss spacing donald brinegar june 24 2011 at 11 58 am.

2 4 rafters can span up to 7.