《建筑工人》1998年第6期刊登的《塑料管和钢管在梁柱中暗敷设的方法》一文中介绍的梁内下套管法,我认为是一种浪费,因为这种方法等于在混凝土内又增加了一层钢管。我们的作法如下。1.若穿线管为塑料管,可用下圆木法。将比穿线管略粗的圆木截成比梁高稍长一点的圆木头,像下套管一样,将圆木头固 In the paper “The Method of Dark Laying of Plastic Pipes and Steel Pipes in Beams and Columns” published in “Construction Workers”, Issue 6 of 1998, I believe that it is a waste because the method is equal to that in concrete. Added a layer of steel pipe. Our approach is as follows. 1. If the threading tube is a plastic tube, the next round wood method can be used. The log that is slightly thicker than the stringer is cut into round wood that is a little longer than the beam, like the casing, and the round wood is fixed.