According to The United States of Labor , all materials stored in tiers shall be stacked, racked, blocked, interlocked, and secured to prevent sliding, falling or collapse . Materials stored inside buildings under construction shall not be placed within 6 feet of any hoist way or inside a floor openings, or should not be placed within 10 feet of an exterior wall. Depending on the height of the frames and the space of the beams. High rise storage systems can reach 100 feet, however for a typical rack its 20-25 feet.
Storage areas should be kept free from accumulation of materials that creates hazards from tripping, pest hideout, fire or explosion. Some of the most common types of pallet racks and systems used include; drive in and drive through which allows forklift to drive directly into the lane of the stacked rows called a bay. It can have an entry at only one end or at both ends. There is a push back pallet rack designed organizing space by depth than width, reduces aisle space and increases storage density. Pallet flow, this uses a slightly inclined rail with rollers that allow pallets to move easily along the sloped plane. Last but not least compact mobilized pallet racks , they are designed to maximize the use of warehouse storage space.
For safety considerations pay attention to any lose components in the pallet rack system, report any damage in pallet rack, such as frame , if damaged it could cause pallets to fall. Never overload or exceed the recommended load for a racking system. For example 3000 lb max pallet weight being stored on 96'' beam spans would need to have 6000 lbs. Here is a fact did you know since the Second World War , pallet racks have become an essential element of most modern warehouses.
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