long span racking another area where a lot of people cut corners to save cost and ending up in the long term to pay the price.Most of the new shelving supplied these days is mutch thinner than older shelving due to cost saving and very often gets over loaded. When last did you inspect your filing room ?material and sometimes life, All to often nobody owns up to having done the damage and undetected or ignored the collapse comes later   
 With the used of Forklifts an enormes damage is done to Racking components. Any dent however small reduces the caring capacity of the racking upright, which in turn puts more strain on the next bay. Till it evenualy colappes damaging goods,