Why are there so many holes in the station chairs

   First to save money. Stainless steel chairs are very expensive to make, and digging holes is a good way to save costs. The stainless steel scraps saved by so many holes can indeed save a lot of money.
   The second is to prevent slipping. Under normal circumstances, the surface of the stainless steel bench will be smooth and uncomfortable to sit on. Drill some holes to increase the surface friction and the chair will not be so slippery.
   The third function is rapid drainage. There are often rainwater on the chair, accidentally spilled drinks, sprayed disinfectant, and accumulated water after wiping with a cleaning rag. With these holes, the accumulated water can quickly flow down through the holes.
   The fourth function is ventilation. In summer, stations with a lot of traffic are always hot. At this time, the hole in the chair becomes a heat sink, otherwise, the more you sit, the hotter you will be, wouldn’t it make you anxious to get angry?
   The fifth effect is to facilitate splitting. When carrying so many chairs into the station, they must have been disassembled and loaded on vehicles. But if there is no hole in the chair, it may be troublesome to remove it.
   The famous “Magdeburg Hemisphere Experiment” proved to us how terrible it would be without holes. The mayor of Magdeburg, Glick, sucked out the air in the two brass hemispherical shells to form a vacuum in the balls, and finally used 16 horses to separate the hemispheres. If those chairs without holes are stacked together, it may be like the hemisphere in the experiment, the air between the chairs is squeezed out, and there are only three or five burly men, and it is estimated that they cannot be disassembled. In contrast, perforated chairs stack on top of each other to allow air to circulate and can be easily removed.
   Some people may have new questions: Since they are all holes, why are they just circular holes instead of triangular holes, square holes, and polygonal holes? Generally speaking, round hole abrasives will be cheaper to make. If you are really not short of money, it is not impossible to dig triangular or hexagonal holes.
   Another important thing is that the circle rotates 360 degrees around the center of the circle, which is symmetrical at any time, so the chair digs a round hole, which is evenly stressed, not easy to crack, and durable.