The Sleeved Purlin System is easily the most popular of the three zed
 purlin systems available from Hi-Span. Purlins achieve a high degree of
 continuity over the supports by employing connecting sleeves over joints.
 This means that design bending moments are distributed evenly along the
 building length, resulting in smaller section sizes and valuable economies
 achieved.
 In the various possible arrangements of single and double span purlins,
 the Hi-Span sleeved system offers the customer low material costs,
 practical on-site advantages during erection, and excellent building
 performance thereafter.

Double Span Joint Arrangement. This system combines single and double span purlins with their joints staggered and sleeved. The provision of a sleeve at the unjointed connections over the penultimate support is required.

Single Span Joint Arrangement. Apart from the penultimate support this system has sleeves at alternate positions. Purlins must be continuous over a minimum of two spans using a sleeve, in order to create an end bay situation. (Sleeve arrangement as above, using single span purlins).

 Standard Punching Patterns.
 These layouts do not imply that all sections are suitable.

 Non Standard Punching Patterns. 
 Additional holes on the standard punchlines will be made
 as detailed.Non standard punchlines can be incorporated
 at no extra charge.

 For Gauge Line Details  click here     
 For Sleeve Details click here