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The Heavier Raised Floor Weight, The Better Load Capacity

The Heavier Raised Floor Weight, The Better Load Capacity?

The steel raised floor is mainly composed of upper and lower steel plates and cement filler. In general, the load capacity of steel raised floors increases with weight, because higher load capacity of the requires thicker steel plates.

General standard

Due to the different production processes and raw materials, the load capacity of floor with the same thickness steel will be different, but the steel thickness used for export standard is in accordance with the following standards:

Model Concentrated Load Top Steel Thickness Bottom Steel Thickness
FS662 662LB/300KG 0.6mm 0.6mm
FS800 800LB/363KG 0.7mm 0.8mm
FS1000 1000LB/454KG 0.8mm 1.0mm
FS1250 1250LB/567KG 1.0mm 1.2mm
FS1500 1500LB/680KG 1.2mm 1.4mm
FS2000 2000LB/907KG 1.6mm 1.5mm


Relationship between weight and load

But the load capacity of a 15KG steel raised floor must be higher than a 14KG floor? The answer is NO.

At first, the inner fillers used by steel raised floor manufacturers are cement, coal ash, foaming agents, etc. The weight of each inner filler is similar. The difference in floor weight is mainly determined by the thickness of steel plate, so the heavier floor, the higher load capacity is. However, from a certain point in time, some manufacturers increase the weight of steel raised floor by increasing the density of the filler, in addition to cement, coal ash, foaming agent, they also added yellow sand. By adding yellow sand, the weight of a floor can be increased by more than 3KG. Therefore, it is not correct to judge the load capacity of floor by its weight.

Today’s steel raised floor manufacturers more or less fill yellow sand. Under the same thickness of steel plate, floor with yellow sand indeed has better load capacity. But it also brings some problems:

1. Floor is difficult to cut due to the increased density of the filler. Most customers use a ribbon saw to cut the floor, which increases the loss of the saw blade and increases the time it takes to cut the floor.

2. Take FS800 steel raised floor as an example, we have done related experiments. Each floor adds 2KG weight by adding yellow sand, concentrated load increases about 20KG-30KG. Each floor adds 2KG weight by increasing thickness of steel plate, concentrated load increases more than 220KG.


Of course, adding 2KG of yellow sand requires almost no cost, but cost of increasing 2KG steel plate increase more than USD2.0/PC (calculated according to the current steel plate price), so customers with different location will have different choices. But it can be concluded that the load capacity of a steel raised floor is determined by the thickness of the steel plate, not its weight.

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