The external wall of a warehouse is a reinforced concrete two-way slab which has one simply supported end and three fixed ends, bearing load of triangle.
堆场类建筑的外墙一般按照三边固定一边自由的混凝土双向板，板承受荷载为三角形荷载。
A narrow steel sheet with one-folding extends out of a barrel-shaped steel jacket and the side wall of the end surface, and the narrow steel sheet is fixed with a bronze needle.
由圆桶状钢套及其端面侧壁伸出带一折的窄钢片，在窄钢片上固定有一根铜针。
The pulley is fixedly installed on the wall, and the rope which is threaded through the pulley is connected with the lamp-socket, then the other end of the rope is connected with a fixed object.
其滑轮固定安装在墙上，灯座与穿过滑轮的绳索连接，绳索的另 一端与固定物连接。
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