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Floor Grating Terms

Anchor – The device by which grating is attached to its supports.
 
Bearing Bars – Load-carrying bars made from steel strip or slit sheets or from rolled or extruded aluminum and extending in the direction of the grating span.
 
Bond –The intersection of two strands in a grating pattern.
 
Carriers – Flats or angles which are welded to the grating panel and nosing of a stair tread.

Cross Bars – The connecting bars that extend perpendicularly across the bearing bars. Where cross bars intersect the bearing bars, they are welded, forged or mechanically locked to the bearing bars.

Cutout – A section of grating that has been removed to allow pipes, ducts, columns, etc. to pass through the grating.

Grating – An open grid assembly of metal bars, in which the bearing bars running in one direction are spaced by rigid attachment to cross bars running perpendicular to them or by bent connecting bars extending between them.

Grating Frame – A metal frame that contains floor grating and provides a means to anchor floor construction.

Grating Tread – The surface of a step constructed of a type of grating.

Hinged Panels – Grating panels which are hinged to their supports or to other grating parts.

Kick Plate – A flat bar attached flat against the outer edge of a grating and projecting above the top surface of the grating to form a lip or curb.

Nosing – A special L-section member serving as the front or leading edge of a stair tread or of grating at the end of a stair.

Reticuline Bar – A sinuously bent connecting bar extending between two adjacent bearing bars, alternately contacting and being riveted to each.

Rivet Centers – The distance center to center of rivets along one bearing bars.

Reversible Grating – Grating so constructed that it may be installed either side up.

Span of Grating – The distance between two points of grating support.

Straight Cut – That portion of the cut edge or cutout of a grating which follows a straight line.

Trim Band – A band that is not load-carrying but primarily used for aesthetic purposes.

Width – The overall dimension of a grating panel, measured perpendicular to the bearing bars.