发布时间:2025-01-30 02:56:27
按照相关规定,受拉钢筋的基本锚固长度也就是最少锚固长度不得低于300毫米。受拉钢筋的锚固长度则需要根据。钢筋的规格直径,抗震等级以及混凝土的标号所决定,具体可以查受拉钢筋锚固长度表,计算可得出结果。
请问买了个风扇灯 一根电机火线 一根灯火线一根共零线 但是装修的时候电工只放了一组线
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