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甘肃省建七公司预制厂生产的混凝土空心大墙板,在厂内堆放采用一种简易的钢管插放架(图1)。这种插放架具有制作容易,移动方便,造价便宜和占地少等特点。插放架是由200号混凝土梁和φ75毫米钢管组成。梁长3米
The concrete hollow wallboard produced by the prefabrication factory of Jianqi Company of Gansu Province was piled in the factory using a simple steel pipe rack (Figure 1). This kind of plug-and-place rack has the characteristics of easy production, convenient movement, cheap construction cost and less occupation of land. The plug rack consists of No. 200 concrete beam and φ75 mm steel pipe. Beam length 3 meters