A steel grid formed from load bearing bars and cross bars through resistance welding.
Direction of the load bearing bars.
Direction of the cross bars.
Plain load bearing bar
Flat load bearing bar with plain top surface.
Serrated load bearing bar
Flat load bearing bar with serrated top surface.
The Center to centre distance between load bearing bars or cross bars.
Flat bar welded to shaped panels at each end and at cut outs.
Grating gross area
Total area of gratings including cut-out areas.
Grating nett area
Total area of gratings excluding cut-out areas.
Cut – out
Area of grating cut out for pipes and columns to pass through.
Cut-out with straight edges.
Cut-out with curved edges.
A grating with end plates and non-slip nosing for use in stairways.
Plates welded to each end of a stairtread to permit fixing to steelwork.
Special anti slip bar welded to stairtreads or gratings to prevent slipping.