Design of Perforated Planks

Elefant perforated planks comprise a number of U-shape plank elements with the plank section dependant on the load criteria of the finished panel. Whereas the plank length depends on the required span in the support direction.

The planks are stitch welded together, afterwhich an edge bar is then welded at rightangles onto each end; closing off the exposed ends and finishing of the module. This provides a strong stable unit that is both quicker and safer to install onsite owing to the planks are already being connected together.

The stitch welds are usually placed on the lower surface of the grating so that the upper surface appears as an unbroken series of planks with no unsightly welds.

Moreover, the position of the stitch welds have been selected so that they transfer the load from the loaded plank to the neighbouring planks.

As the modules are built up by individual plank elements from a large program of different plank widths, this makes it extremely flexible to fit any project requirements.

Dimensions and load capacity
Elefant plank modules are built from several planks of a specific width. The narrower the plank, the higher the load capacity, and the bigger the possible span.

When we advise the load capacity of a plank module, it is based on the free span. The free span is the clear distance between two supporting beams.

Recommended minimum bearer support at each end is 30 mm.

Size and weight
To ensure that the modules are manageable, avoid distortion and higher transportation costs. We recommend they should be no larger than approx. 1.5 - 1.8 m2, and the weight should be max. 80kg

For ease of transportation it is advisable to keep one grating dimension to a maximum of 1200 mm to fit on a standard euro pallet.

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