走在秦皇岛街头，随处可见在建的住宅楼和商业综合体。很多业主拿着相似的施工图纸咨询不同建筑公司时，总会发现报价相差悬殊。这背后的价格差异究竟从何而来？今天我们就从专业角度剖析建筑施工的成本密码。
一、基础建材采购的学问
钢筋标号直接影响楼体承重能力，325mpa和400mpa的钢材每吨差价可达800元。水泥选择更是讲究，普通硅酸盐水泥与矿渣水泥的凝固时间相差2小时，直接关系施工进度。有经验
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