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【简答题】
凡重要部位的钢筋代换,需征得甲方、设计单位同意,并有书面通知时方可代换。钢筋加工一般要经过 、 、 、 四道工序。 1)钢筋表面应洁净;粘着的油污、泥土、浮锈使用前必须清理干净,可结合工艺除锈。 2)钢筋调直,可用机械或人工调直。经调直后的钢筋不得有局部弯曲、死弯、小波浪形,其表面伤痕不应使钢筋截面减小5%。 3)钢筋切断应根据钢筋号、直径、长度和数量,长短搭配,先断长料后断短料,尽量减少和缩短钢筋短头,以节约钢材。 4)钢筋弯钩或弯曲。
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