1. Load Bearing Bars – A longitudinal load carrying bar of uniform section spanning between supports.
2. Transverse Bar – A member fixed at right angles to the load-bearing bars to provide lateral restraint.
3. Binding Bar – A bar fixed to the edge of a fabricated flooring panel fitting flush with the top of the load-bearing bars.
4. Deep Binding Bar – A bar fixed to the edge of a fabricated flooring panel of greater depth than the load-bearing bar, projecting below the underside.
5. Span & Length – Running parallel with the load-bearing bars, this is the overall dimension of a flooring panel. This dimension is always referred to as ‘length’ even if it is shorter than the width.
6. Width – Running right angles to the load-bearing bars, this overall dimension is referred to as the ‘width’ even if it exceeds the length.
7. Pitch – The pitch is the calculated as the distance centre-to-centre of the load bearing bars or centre-to-centre of the transverse bars.
8. Plain vs Serrations – Plain flooring has load-bearing bars that are smooth. Serrations have notches formed in the top surface of the load-bearing bars to improve slip resistance.
9. Nosing Bar / Slip Resistance – Edging Nosing Bars are members welded to the front edge of a stairtread or to a flooring panel for sighting and slip resistance.
10. Toe Plate / Kick Flat / Kick Plate – Toe plate is a flat bar welded around a flooring panel projecting above the top of the load-bearing bars.
11. End Plate – A plate welded to a stairtread for fixing to s stringer.
12. Curb Angle – A rolled steel angle (RSA) fixed to concrete or supporting steelwork at the perimeter of a flooring area.