Posi Joist Roof Span Tables

Posi rafters are becoming increasingly popular for roof applications.

Posi joist roof span tables. 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. It contains the latest installation guides case studies and links to short instructional videos demonstrating the amazing versatility of this ingenious truss. In addition end details of the posi joist can be altered to give a variety of support conditions. Spans are for guidance only.

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. Due to variations in timber grades load sets support conditions and bearing widths the tables are not suitable as a design tool. Simply enter the required span to see a range of results that will work. To talk to one of our expert design team about how to use our metal web joist span table to calculate your design.

You will be given a range of depths and centres that are available and also an indicative deflection result. Joists can also be used for office floors metal web joist span table sheet attached. 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. 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. 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. Easi joist offers unrivalled lightness strength and greater clear span ability. 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.

Check our our posistrut app an electronic catalogue giving instant access to information about posistrut roof and floor trusses. For definitive information please contact an easi joist manufacturer. 375mm deep joists can span up to 7 5m for apartments at 400mm centres.