Lionweld Kennedy stair treads have been designed to help our customer comply with BS4925-0:2006+A1:2012, utilising our safegrid LK 35mm BP grating and LK 20mm BP gratings.

Mesh Size Requirements:

Where metal treads or landings are used for fire escapes, the gratings shall not allow passage 20mm diameter ball.

Dimensional Requirements:

The minimum stair clear width shall be 1000mm unless supplied for hospitals which shall have a minimum clear width of 1200mm.

Definitions:

• Stair width - distance between handrails or any other obstruction either side of strings.
• Tread Length - distance between stair strings (+0/-2mm).

Platform	Compatible	Version	Certified to
IFC	-	1	2.0
Revit	2017 +	1	2.0