Basic terminology

Floor gratings are load-bearing, plank-like structural elements, the flat sides of which have many through-holes regularly arranged, so the clear cross-section usually makes up more than 70% of the area. Floor gratings are made up of vertically standing bearing bars which are arranged to one another in parallel and they are crossed in regular intervals by spacing (transversal) bars securing their mutual position. Gratings are used as easily mountable finished bearing elements, in particular for walkway and running floor areas, bridges, staircases, etc. The main advantages of floor gratings are their good light and air permeability, their high load capacity at a low sole weight, easy installation and dismantling, and also the fact that impurities cannot settle on their surface. 

 

BEARING BARS

Flat rods between two supports of the grating. They bear load and are mutually arranged in parallel.

SPACING BARS

Rods transversal to bearing bars, in the place of crossing welded with these bars or rods pressed into bearing bars, in the place of crossing welded with these bars or pressed into them

EDGE

Framing of the grating along the entire circumference usually with height identical to the height of the grating

MESH SIZE

Clearance between bearing and between spacing bars.

MESH PITCH

Axial distance between bearing and between spacing bars.

BEARING BAR OF GRATING

Outer dimension of the grating in the direction of bearing bars. This dimension is called length also if it is smaller than width.

CROSS BAR OF GRATING

Outer dimension of the grating in the direction of spacing bars. This dimension is called width also if it is greater than length.

SUPPORT PITCH

Dimension from the centre (of axis) of support to the centre (axis) of support.

CUT OUTS

Forms - cuts or cut-outs in the grating.

SMALL CUT OUTS

Forms - cuts or cut-outs in the grating the length of which does not exceed 0.5 running metre.

KICK PLATE

The edge protruding over the top edge of the grating. Reinforces the grating edge and prevents objects from falling.

PROTRUDING EDGE/RECESS

Used in cases when it is necessary to maintain the same level of the upper edge of grating and the adjacent structure.

BEARING STRUCTURE

The structure on which gratings are laid.

GRATING BEARING

The width of the grating bearing on a bearing structure. It usually equals the height of grating, but the minimum is 30 mm.

STAIR TREAD SIDE PLATE

A flat material with holes, welded on the stair tread, enabling screwing to the stair stringer.

SAFETY STEPPING EDGE

A section welded to stair treads and landings to prevent slipping, to increase the load capacity and to optically highlighting the front side of the stair tread.

ANTI-SLIP TYPE OF GRATING SP

Gratings with a special form on the upper edge of bearing and spacing bars increasing the anti-slip properties of the surface covered with gratings.