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钢筋下料长度钢筋配筋图中的钢筋长度是设计长度,而钢筋要制作加工,还必须计算它的下料长度,即钢筋切断时实际的长度。以图8①号钢筋为例,计算钢筋下料长度。首先用梁长减去二端的保护层厚度,根据规定,受弯构件二端保护层厚应各为10毫米;再加上二个弯钩长度,就是钢筋的下料长度。弯钩长度由弯钩形式确定,如图8那种半圆弯钩,一个弯钩的设计长度为
The length of the steel bars in the reinforcing bar diagram of the bar stock length length is the design length, and the steel bar must be calculated to calculate the length of its blanking, that is, the actual length of the bar when it is cut. Take the steel bar No. 81 as an example, calculate the length of reinforcing steel bars. First, the thickness of the protective layer at the two ends is subtracted from the beam length. According to regulations, the thickness of the two-end protective layer of the bending member should be 10 mm each; plus the length of the two hooks is the length of the steel reinforcement. The length of the hook is determined by the hook shape, as shown in Figure 8. The design length of a hook is