The European norms which regulate the installation of warehouse installations are clear: who wants to assemble an industrial racking system must do it only professionally (therefore, zero space for improvisation) and diligently following the supplier’s instructions, in the cases where the supplier does not do this important operation directly.
How the racking is installed will directly influence its effective endurance and its long-term performance , with regards both to the load and to safety.
The assembly tolerances must respect the European norm EN 15620 for APR, unless the designer has expressed a different opinion.