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根据《混凝土结构工程施工及验收规范》要求,现浇板的钢筋保护层为15mm,而且规定钢筋保护层的允许偏差为±3mm。就是说,现浇板钢筋的保护层在12～18mm 范围内算是合格的。如果施工单位做成15mm厚的砂浆垫块垫在模板上,现浇板下部钢筋的保护层达到要求是不成什么问题的。用水平仪找平,测出现浇板混凝土顶面标高,做好钢筋支架,
According to the requirements of the “Construction and Acceptance Specifications for Concrete Structure Engineering”, the reinforced protective layer of the cast-in-place slab is 15mm, and the allowable deviation of the protective layer of the specified steel is ±3mm. In other words, the protective layer of cast-in-situ reinforcement is qualified within the range of 12 to 18 mm. If the construction unit made a 15mm thick mortar pad to be placed on the formwork, it would not be a problem if the protective layer of the reinforcing bar at the bottom of the cast-in-place plate meets the requirements. Leveling with a level meter, measuring the elevation of the top surface of concrete slabs, and making a steel frame