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If you experience damage or technical problems in your warehouse, storage system or storage warehouse, our rectified inspectors will come and assess your damage. You will discover how this damage assessment works on this page!

Different <span>color codes</span>

Different color codes

Damage to your steel storage systems can be caused by several factors. Collisionsby lifting equipment or overloadare the most common causes.

All supporting structures and construction parts deform under load to a certain value. Elastic deformation increases with increasing load. When the load is removed, the original shape is regained. If this is not the case, there is an overload and this must be checked in function of the necessary repairs.

Our inspector checks the storage system in question for damage, using the European standard NBN-EN 15635. He then qualifies the damage on the basis of the diagram below in 3 color codes.



To check for structural damage to a stud, a 1 meter level (or stick) can be used, centered in the area of ​​greatest deformation. The distance between the spirit level and the bent part of the post must not exceed 3 mm in the depth direction and no more than 5 mm in the longitudinal direction. If the stile is damaged in both width and length, these must be measured separately. Connections of beams and uprights must not be visibly deformed to such an extent that a danger to the user could arise. Weld seams between the carrier profile and the connecting parts must not contain any cracks.

A green code is assigned to undamaged racks and damaged racks that do not exceed the following limits:

  • < 3 mm in depth direction
  • < 5 mm in longitudinal direction
  • < 10 mm arc diagonal

In these cases the damage represents a relatively low risk and the rack is suitable for further use until the next inspection. If the severity of the damage has not increased at the next inspection, the rack can continue to be used. If the severity of the damage has increased, an orange code is assigned according to the standards below.

  • 3 to 6 mm in depth direction
  • 6 to 10 mm in longitudinal direction
  • 10 to 20mm arc diagonal

In this case, the user is advised to order the replacement parts and carry out the repair as soon as possible. If this does not happen within 4 weeks, a red code will be assigned. A red code  is also assigned to racks that exceed the tolerances below.

  • 6mm in depth direction
  • 10mm longitudinal
  • 20mm arc diagonal

This is a critical condition where the damaged section must be cleared immediately: remove the load and demarcate the section with a barrier tape (red-white). Necessary repairs must be carried out immediately. When the repairs have been carried out correctly, the rack may be put back into service.



A beam (or shelf) is assessed as overloaded if a permanent deformation has occurred or if the deflection is greater than the deflection specified by the manufacturer.

The deflection of load-bearing parts of storage systems when the working load is applied may not exceed  L/200 of the clear span in the case of steel storage systems. The free span is the distance between the 2 vertical beams of the rack.

Each beam must be provided with a locking pin that hooks onto the upright. This prevents the beam from coming loose in the event of incorrect handling. The locking pin must be able to withstand a vertical load of 5 kN  (approx. 500kg).

  • L = length of the beam
  • D = deflection in the middle of the span

If D > L/200 -> deflection is too large; the beam must be replaced (code red). A beam of eg 3000 mm may deflect a maximum of 15 mm.

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