Posi Joist Roof Span Tables

Mitek s posistruts are the perfect engineered solution and can even be trimmed to length on site.

Posi joist roof span tables. View joist rafter tables. The following easi joist span tables are to be used as a basic guide to achievable joist span for given depth and spacing and should be used for estimating of feasibility only. Flat roof joists rafters purlin span tables for domestic floor joists to bs 5268 7 1 note. Spans are for guidance only.

This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. Posi joists mitek manufactures the steel webs used in posi joists. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. For definitive information please contact an easi joist manufacturer.

They can even be curved to create a dynamic roof line effect. 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. Posi rafters posi rafters combine the lightness of timber and strength of posi strut steel webs to provide a quality roof system that can span further than alternative timber products. You will be given a range of depths and centres that are available and also an indicative deflection result.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. This gives you unequalled design freedom across a wide range of applications for both floor and roof in. Simply enter the required span to see a range of results that will work. Posi joists can incorporate a trimmable end incorporating a solid timber block which can be engineered to give up to 130mm allowance at each end for trimming on site.

In addition end details of the posi joist can be altered to give a variety of support conditions. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1. Drilling through solid timber beams isn t the ideal scenario. Try our interactive span checker to find the posi joist suitable for your project.

Posi rafters are becoming increasingly popular for roof applications. Easy access for services on site also means the structural integrity of your design can t be compromised.