Strengthening by steel armoured is an effective method for increasing degree of safety and decreasing possibility of accident and elongating service life in the reinforced concrete structure.

外包钢加固是提高钢筋混凝土结构安全度、减少事故隐患，延长结构使用寿命的有效方法。

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Routine roof covering structure great majority are that the armoured concrete shows the dyadic flat Ao Yu device roof covering.

常规屋面结构大多数为钢筋混凝土现浇或装置式的平屋面。

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