The components of the APR12 and DIMAX models are designed to create integral walkways at different levels to maximise the use of vertical space. Multi-tier shelving systems are therefore the most practical, functional and economical system by which it is possible to double or even triple the storage capacity. Different solutions are available for the decking, from perforated or closed galvanised metal floor strips to wooden panels. Staircases, built according to current calculation and safety standards, allow the access to the various levels. The perimeter areas are equipped with protective railings and sliding, swing or overhead safety gates which allow the stored material to be easily moved from the ground to the desired level with the help of a forklift.