For detailed regulations covering aluminium load-bearing structures, see the building regulations of the Swedish National Board of Housing, Building and Planning (Boverkets Byggregler), Design Regulations, Provision on the Application of European Construction Standards (EKS) and EN ISO 14122, Permanent means of access to machinery.
Distributed load (Diagram 1)
The permitted distributed load with respect to longitudinal deflection, when deflection is limited to 1/200 of the span. With holed profiles, the permitted load is reduced by 20%.
Deflection of floor structure
Deflection is normally limited to 1/200 of the span. On working platforms and walkways, the difference in height between the loaded part of the floor and the adjoining unloaded part should not exceed 4 mm.
The material in the profiles is not fully utilized with regard to the span at a deflection limitation of 1/200. This means there is a large reserve bearing capacity.
Concentrated load (Diagram 2)
The permitted concentrated linear load with respect to longitudinal deflection, when deflection is limited to 1/200 of the span. With holed profiles, the permitted load is reduced by 20%.
Bearing capacity for concentrated loads
When the load area is less than the width of the profile, the flooring profile bends along both its longitudinal and transverse axles. The longitudinal bearing capacity is, in principle, independent of the transverse bearing capacity. It is simplest to check each one individually with the help of Diagram 2 and Table 1 below. Note that the size of the load area has a dominant influence on the bearing capacity and resistance to local deformation of the surface.
Load type A refers to a small 'stamp' with a diameter of 25 mm.
Load type B refers to a narrow load area with a length of 100 mm. This is equal to the load area of vulcanized wheels, etc. Steel wheels should be avoided as they deform the grooves on the surface of the flooring profiles, increasing the risk of slipping.
Load type C refers to a circular or square load area with a transverse measurement of approximately 110–120 mm. This is equivalent, for instance, to a simple pneumatic tire of a passenger car or a light delivery van.
The table above applies to loads located in the most unfavorable position.
When higher loads are required, please contact Sapa Flooring System.