Building and structure

Floor loading

The load the floor slab can carry per square metre and per rack foot.

It is usually stated as a distributed load in kN/m² or t/m². Modern logistics buildings are often designed for 5 t/m². For racking, the point load under the uprights also matters, and for forklifts the wheel load. Heavy-duty and production uses often require a reinforced slab.

Distributed, point and wheel loads

The distributed load describes evenly spread loads, such as block stacking. For racking, the point load under each upright is decisive and can quickly reach 6 to 8 t with tall racking. Forklifts and heavy vehicles create wheel loads that also act dynamically. A floor can be rated for a high distributed load and still be undersized for tall racking.

Verification

Reliable figures come from the structural calculation of the slab, its thickness, reinforcement and subgrade. Where documents are missing, core samples and an expert report help. Production uses with machine foundations, presses or crane rails often need separate foundations. Strengthening a floor afterwards is costly and disrupts operations.

Modern logistics building: 5 t/m² (around 50 kN/m²)
Heavy duty and production: often 7 to 10 t/m²
Rack point load: 6 to 8 t depending on racking

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