1、 Consider whether the design institute agrees to change the type and model of the floor support plate designed by the design institute itself. The thickness of the entire floor slab of this steel structure project: If open and closed floor support plates are used, the thickness of the entire floor slab is below 110. Personally, it is recommended that the wave height should not exceed 51mm, as the national code for building reinforced concrete stipulates that the protective layer of steel bars in reinforced concrete should not be less than 25mm, and the wave height of the floor support plate itself is 51mm. Generally, the height of steel bars is about 20-30mm, and a certain distance should be maintained between the steel bars and the floor support plate itself, 25mm+51mm+(20-30) mm=90-105mm.

二、根据国家规范，所以建议110以下的楼板厚度使用波高51mm的楼承板，大于110mm的楼板厚度，可以考虑波高大于51mm的楼承板。次梁的间距，次梁的间距越大，楼承板的波高就要越大，承载力相对要高。

2、 According to national regulations, it is recommended to use a floor support plate with a wave height of 51mm for floor thicknesses below 110. For floor thicknesses greater than 110mm, a floor support plate with a wave height greater than 51mm can be considered. The spacing between secondary beams, the larger the spacing between secondary beams, the higher the wave height of the floor support plate, and the relatively higher the bearing capacity.

楼承板的厚度，楼承板的厚度越大，无支撑跨度就越大。楼承板的镀锌基板的屈服强度，屈服强度越大，无支撑跨度就越大。更换板型，在设计院同意的基础上，考虑变更板型，好是波高一样，如果是闭口楼承板，替换的板型还是用闭口楼承板，这样设计院那里也比较容易通过。

The thickness of the floor support plate, the larger the thickness of the floor support plate, the larger the unsupported span. The yield strength of the galvanized substrate of the floor support plate, the larger the yield strength, the larger the unsupported span. To replace the plate type, with the approval of the design institute, consider changing the plate type, preferably with the same wave height. If it is a closed floor support plate, the replacement plate type should still use a closed floor support plate, which will be easier for the design institute to pass.