All load tests were conducted under initial control SOCOTEC and according to standard EN 12825. ( The only Standard applicable in Europe for raised flooring.)

GAMMA Industries actively participated in the creation of uniform Standards at European level by bringing all its know-how in this field.


Definitions according to the
European Standard EN 12825


Ultimate Load : Maximum load got at the failure of the element during the ultimate load test procedure..


Working Load : Load got when dividing the ultimate load by the safety factor.


The safety factor used by GAMMA Industries and the majority of raised floors manufacturers is : 2




Requirements of European Standard EN 12825

Before failure, the element must have taken the ultimate load of its class, according to the following table:

LOAD CLASS 1 2 3 4 5 6
Ultimate load > 4 kN > 6 kN > 8 kN > 9 kN > 10 kN > 12 kN
Working load > 2 kN > 3 kN > 4 kN > 4.5 kN > 5 kN > 6 kN

When the load applied equals the working load, the deflection must not overtake the values of the following board :

Deflection class maximum deflection
A - ( the most stringent ) 2.5 mm
Bespace 3.0 mm
C - ( the least stringent ) 4.0 mm

A system classed 1A is a system for which the ultimate load is at least 4 kN ( load class 1 ).

The working load of this system is at least 2 kN, with a safety factor of 2, for a deflection less than 2.5 mm (deflection class A).

See upper tables for the other classes.


For this example, the loading test is made in the middle of one side of the panel :

-> After failuire, the identor continues to penetrate within the panel, despite the removal of the load.



Like the oak, the raised floor must be :

- Resistant against the aggressions,
- Solid, robust to meet the loads,
- Beautiful,
- Durable
- Securely anchored




Newton our advice :