Main disadvantages and countermeasures of crossbeam shelves The main disadvantages of crossbeam shelves are concentrated in two aspects: "space utilization rate" and "basic requirements". Firstly, it is necessary to reserve a wide forklift aisle (3-4 meters), which results in a lower utilization rate of warehouse space compared to dense storage shelves (such as shuttle truck shelves with a utilization rate of over 70%, and crossbeam shelves with a utilization rate of only 40% -60%), making it less friendly for warehouses with limited space; Secondly, heavy-duty models have high requirements for ground load-bearing capacity, usually requiring a ground load-bearing capacity of ≥ 300kg/㎡. If the warehouse floor is made of ordinary cement, concrete reinforcement needs to be done first, which increases the initial construction cost. To address these issues, targeted strategies can be used: in terms of space, a "narrow channel design" can be adopted, combined with forward moving forklifts or three-way stackers, to reduce the channel width to 2.5-3 meters; On the ground, if the load-bearing capacity is insufficient, steel plates can be laid or ridges can be installed to distribute the pressure of the shelves on the ground; In addition, a platform can be built on top of the shelves by combining them with the attic, using vertical space to compensate for the area occupied by the ground passage.