RHS (rectangular hollow section) Portals. The XL portal system uses RHS structural steel sections.
Depending on the span, these can be 300 - 600 deep and have a wall thickness of up to 12.5mm.
Using these sections clearspans of 50+ can be achieved.
Purlins are rested between the rafters to give optimum clearance and a clean smart look. It also removes places for birds to perch on the rafters and nest.
Girts are typically bolted down between the portal legs, rather than bolted to the outside. This gives a cleaner design and more usable space in the building.
The XL system uses simple bolted knee and apex joints.
Due to the structural strength of the portals, no obtrusive knee or apex braces are required. This ensures a clean look and maximises internal clearance.