Terminology
Load Bar
Flat Bar from which grating is made.
Cross Rod
In mild steel this is a twisted square bar forged into the top of the load bar.
In stainless steel grating this is a round bar forged into the top of the load bar.
In aluminium this is a square bar inserted through punched holes in the load bar and swaged to hold it in position.
Banded
Refers to the process of welding a flat bar (normally 5mm) to the loadbars after they have been cut to size to provide a uniform apperance around all sides of a grating panel. This process also helps prevent injury from laceration during installation and assists in keeping the panels flat.
Cut To Size Only
Refers to the process of leaving the panels with raw cut edge and not banded as described above.
Exact Size
Refers to the requirement to make the panels to an exact dimension and not to be adjusted to the nearest width across the standard pattern of the load bars.
Fingers
In FRP grating this describes a panel cut that does not run adjacent to the load bar.
Span
Overall dimension of a panel measured parallel with load bar.
Indicated by this symbol???
Width
Overall dimension of a panel measured at right angles to the load bars. Always called "Width" even if greater than the length.
Serrations
Small notches made in the top edge of the load bar to assist in slip resistance.
Nosing
A member attached to or on the leading edge of a stair tread or at the top of a flight of stairs to assist slip resistance and to give clear visual indication of the edge of the stairtreads.
Can be
Kick Plate
Heavy section flat bar welded to ends or sides of panels and around cut outs, etc. when specified. Top edge to be 100mm above grating generally and is typically
130 x 6.
Cut Out
Grating areas removed from panel to permit passage for installation of pipes, plant and structural and handrail items.
Penetrations
As for cut out but typically within the grating panel and not on the edge.
Gross Area
The total area of grating as shown on drawings using overall width and length dimensions of grating ie: W x L.
The gross area is always the area calculated for invoicing purposes.
