Posi Joist Roof Span Tables

Due to variations in timber grades load sets support conditions and bearing widths the tables are not suitable as a design tool.

Posi joist roof span tables.

Spans are for guidance only. 304mm deep joists can span up to 6 68m for apartments at 400mm centres. Easi joist offers unrivalled lightness strength and greater clear span ability. 375mm deep joists can span up to 7 5m for apartments at 400mm centres.

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. For definitive information please contact an easi joist manufacturer. Posi rafters are becoming increasingly popular for roof applications. Try our interactive span checker to find the posi joist suitable for your project.

Find a manufacturer there are numerous easi joist manufacturers across europe. United kingdom span table ws200 easi joist joist depth joist centres chord dimensions maximum permissible span 72 x 47 5125 400 97 x 47 5450 219 122 x 47 5725 72 x 47 4525 600 97 x 47 4850 122 x 47 5075 span tables the following span tables are to be used as a basic guide to achievable joist span for given depth and spacing and should be. They also tell you what the maximum spacing should be between each section or timber member size of joists mm clear span c16 joist m clear span c24 joist m 47 x 95 47 x 120 47 x 145 47 x 170 47 x 195 47 x. To talk to one of our expert design team about how to use our metal web joist span table to calculate your design.

It contains the latest installation guides case studies and links to short instructional videos demonstrating the amazing versatility of this ingenious truss. Easi joists are parallel chord trusses using stress graded timber chords plated together with wolf systems patented precision engineered metal webs ep 1 985 774 a1 the strongest available on the market. Span tables span tables can be used to determine the size of a timber member of a particular strength class required for a given span. In addition end details of the posi joist can be altered to give a variety of support conditions.

Span tables for flat roof joists to bs 5268 7 2 imposed loads of 0 75 kn m for maintenance and snow load are applicable where there is no permanent access no fixed ladder or staircase and most areas where the altitude does not exceed 100 metres refer to bs 6399 3. 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. Simply enter the required span to see a range of results that will work.