System support Selection: Our products cover all possible combinations of surface and alleged support load. The two main selection criteria for a support system are: supporting surface (floor, wall, ceiling) and cargo
Select thick grilled and distance between adjacent brackets: The thickness of sheet metal grate and the distance between successive legs is chosen based on the total weight of cables per meter calculated. The technical instructions are provided charts showing the maximum load per unit length for each combination of plate thickness and distance consecutive mounts. Using these charts, the support system chosen will be rugged and economical.
You will find more information here