Which System Do I Need?
|System||No. Of Bays||Rafter Spacing|
|Heavy End Bay Sleeved System||5+||up to 15m|
|Sleeved System||2+||up to 15m|
|Butt System||1+||up to 12m|
Heavy End Bay Sleeved Purlin System
For buildings with 5 bays or more and rafter spacings up to 15m, heavier gauge purlins are fitted in the end bays with lighter purlins fitted on internal bays. Penultimate rafter joints are fully sleeved in the same gauge material as the end bay purlins and are longer than the standard sleeve. Internal bays are sleeved at every joint with standard sleeves of the same gauge material as the inner bay purlins.
Sleeved Purlin System
For buildings with 2 bays or more, where a heavy end bay system is precluded and rafter spacings up to 15m. Standard sleeves are fitted at all penultimate rafter connections and staggered on all internal bays.
Butt Purlin System
This system can cater for odd bays and can be used in both inset and oversail applications.