I GRC Component fabrication and installation  
　　 one 、 Geometric dimension greater than 400 mm Of GRC The member shall be equipped with a steel mesh whose diameter is not less than 6mm , spacing not greater than 400 mm ； GRC The geometric dimensions of components should not exceed 1000mm , when exceeding 1000 mm The diameter and spacing of reinforcement shall be determined by the structural design.   
　
II GRC Appearance quality requirements  
　　 one The surface shall be smooth, the edges shall be neat, and there shall be no missing edges, corners or warpage;  
　　 two The surface shall be free of cracks, exposed nets, exposed reinforcement, honeycomb and pitted surface.  
　
III GRC Installation of components  
　　 one Before the installation of components, the surface of the building connection structure shall be treated to ensure its flatness and firmness.  
　　 two If there are defects such as missing edges and corners on the surface of the component, cement mixing materials shall be used for repair before installation.  
　　 three The horizontal, vertical and component center control lines shall be snapped before installation.  
　　 four The installation error of components shall meet the following requirements:  
　　（ one ）Perpendicularity error of unit decorative surface ≤ five ㎜ / Floor height, and total error ≤ thirty ㎜；  
　　（ two ）Straightness error of unit decorative surface ≤ five ㎜ /2m , and the total error ≤ thirty ㎜；  
　　 five . The installation joint shall be smooth, with the error exceeding three Mm shall be polished.  
　　 six . Gaps shall be reserved for the connection of components and treated according to the design requirements.  
　　 seven The parts with waterproof requirements shall be treated with waterproof treatment, and necessary anti freezing measures shall be taken.