Multi-tier shelf is suit for high warehouse, light cargo, pick by man and large storage quantity situation, which can increase the using space. Multi-tier shelves systems were widely used in automobile and logistics industries.
    Multi-tier shelves could be the first with shelves and second platform, or both with shelves. The shelves in first layer not only for storing goods, but also for supporting the second layer. Can be design many layers(usually 2-3 layers),and with staircases handrails, elevator and lighting systems. If the bottom beam distance can make short ,the whole system cost can low down a lot too.

   
  Connecting of frame          connecting of main joist             Connecting of subordination             connecting of
  and main joist               and subordination joist              joist and floor decking                 floor deckings

   
   Stair case               mesh decking                    lamp of multi-tier shelf                guardrail of multi-tier shelf

       Multi-tier shelf usually takes the panel shelf or heavy shelf as the principal part and support the floor decking. Floor decking is made by cold rolling steel, checkered iron, or steel grating. Cold rolling steel has strong load capacity, good integrity, good load capacity, high precision, surfacing and so on. Many choices and easy equip lamp system, and easy to store ,pick ,management .load capacity is about 500kg/level and distance of each floor is 2.2 to 2.7 meters, and the top one is about 2 meters. It is convenience for both manual and machine operate. The main parts: frame (main support of the multi-tier shelf),main joist (normal 工 shape, connect with frame), subordination joist ( crisscross with main joist, connect floor decking),floor decking (floor panel), stair case, guide rail barrier and other connecting parts.