Principles of construction
In a single operation twisted or round cross bars are pressed into solid bearing bars under high pressure and at the same time are fully electrically welded.
Through the homogeneous welding of all intersections by the resistance welding process gratings of high stability, maximum strength and optimum load distribution are produced.
The special construction features of forge-welded gratings provide incomparable resistance to twisting and bending distortion. Even when cut-outs have been made later (which very often cannot be avoided during erection), stability is maintained to a high degree.
The gratings are banded at all sides. Banding are equal to bearing bar size (for automatic welding of the banding bar it has to have two stiffening corrugations).
The gratings are either produced having plain bearing bars or machine serrated bearing bars.
Length = direction of bearing bars (span)
Width = direction of cross bars (standard panel width being 1000mm)
Size of grating = 800x1000mm
The first value is always the length