The conditions you provide are not complete, for example, the grade of the precast slab concrete, the steel bar model, the span, the support conditions, and the thickness of the cement mortar laid on it.
2. Normally, it can withstand 0.5 tons per square meter, which is 500 kg/square meter. There is absolutely no problem if the load does not exceed this.
It is no longer safe to calculate based on theory. If you can find out the model number of the original floor slab, I can help you calculate it accurately.
According to the "Uniform Standard for Reliability Design of Building Structures", its reliability index can reach 3.7. Due to my work relationship, I have done damage tests on more than 30,000 hollow slabs in Shandong, and the actual damage load can only be It reaches about 3.3 of the design load. It seems that there is no need to worry too much in the short term.
Wuhan Xinxinran Construction Technology Co., Ltd. was established in February 2009. It is mainly engaged in the research and development and sales of building materials. It has a full set of patented technologies for high-strength composite thin-walled pipes and cast-in-place concrete hollow floor products.