Many customers buy back shelf plant reflects the shelves in either deformed, or is off paint it, or buy back is not what you want, then this is what causes it, Hengyuan Cheng shelf analytic reason is that the shelves should be designed follow the principle: one, considering the weight of goods caused by the uneven distribution of deformation, the transverse momentum stacker or forklift movement caused by seismic fortification intensity; 2, between the goods | stay between goods and shelves and cargo piping and fire There are a safe distance, leaving the fire sprinkler space; 3, high quality steel, surface rust and decorative treatment, to ensure that the use of performance under the premise of the shelf, to minimize the project cost. It should also pay attention to the design of the shelves the following: 1. Design shelf structure, should be taken into account requirements | factors such as material supply and installation conditions, a reasonable choice of structure | | Equipment cases | loads nature structural measures and production of materials, so that Advanced technology | economical | Safety applicable | ensure quality. 2, shelf dimensional tolerances | deformation and the gap should comply with the relevant standards. 3, there is a strict design process, storage, whether in state or durability limit the maximum load limit state design shelf structure, we need to comply with the relevant standards, to have calculations. For major projects must go through the finite element calculation, shelves intensity | stiffness and stability of the composite, for safety under earthquake conduct a comprehensive assessment. Standard shelf reusable, have general-purpose computing book. 4, calculated using the data must be evidence-based, or get tested. Shelf structure is often difficult to make precise theoretical analysis must resort to the appropriate tests to determine the parameters required for the design, but also directly determine the carrying capacity of the shelf structure or a member through trials. Trial have reported that the test equipment should be recognized by the state are eligible for metrology calibration | inspection. 5, shelf-beams, both ends of each beam must be equipped with locking means, or to provide a screw and nut, so that the beams can be stably fixed to the uprights, to prevent the external force from the upward. To ensure that its beam engagement means (or screws and nuts) are locked in use should be checked regularly for proper functioning of the beams lock nut or screw fastening, timely replacement of damaged equipment. 6, the shelf column column foot should be properly secured to the concrete foundation. To clear the shelf with the ground connection is to use embedded parts, using secondary irrigation scheme, or the use of chemical bolts directly connected with the ground plan. Diameter bolts | buried minimum size, must be based on the actual load | seismic load or wind load, determined by calculation. 2.4m following materials on hand a small shelf may not be fixed. Fixed shelf column based concrete must be cured 28 days in a row, and bear the appropriate pressure, uneven foundation settlement to meet the requirements. 7, the library shelves in one rack-based settlement value should be strictly controlled to ensure the normal use of the shelf structure. Non-library shelf one shelf shelves attention basis and foundation of the building housing the separation column should be designed to prevent the shelf structure forces cause damage buildings. Follow these seven principles, then it will not produce shelf collapse, shelves paint, shelves deformation problem.