Why the square grid pattern?
Rectangular steel grating and some rectangular moulded grating has good deflection only in one direction. With a square grid pattern, deflection is in both directions and cannot be installed incorrectly. Square grid patterns allows access holes to be cut from the centre of the panel, and does not degrade the strength of the panel in any way. For most projects, the ease of cutting lowers costs since it can be done without specialist cutting and welding equipment. It is also light enough to avoid the need for cranes. Cut outs can be made in the grating for pipe work etc. and because the bearing bars bear in both directions, extra support is not required.
