Metal Roof Span Tables

For two equal spans the listed span is the center to center distance from either end to the center support.

Metal roof span tables.

For 2x6s purlins the posts are spaced in 6 feet distance. 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. Fss 18 standing seam. Table notes spans are based upon continuous support of compression flange over the full length of the joist.

If the space between posts is greater than 8 feet then brace is needed to avoid buckling. Calculated allowable properties are based upon aisi s100 07 north american specification for the design of cold formed steel structural members. The metl span ls 36 insulated roof wall metal panel load span table is based on allowable stress design asd. However it is important to note that expected load is a crucial factor while determining this.

Ksi reduced to 60 ksi in accordance with the 2012 edition of the north american specification for design of cold formed steel structural members a2 3 2. 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. All calculations for the properties of pbr roof panels are calculated in accordance with the 2012 edition of the north. Flexbeam siding through fastened roofing.

Flexospan load tables. By the standard the most used placement of purlin span for metal roof is five foot intervals.