Can the workshop ceiling be used for grade B EPS polystyrene board?

According to the requirements, non-combustible materials need to be used to meet the requirements of A.

Is there a standard height for the ceiling of the 100-level dust-free workshop? How much >>>More

This is OK for Class 1 or Class 2 high-rise buildings with automatic sprinkler systems, and for Class 2 buildings or less.

Considering the objective reality that the amount of gypsum board and mineral wool sound-absorbing board is very large, and according to the provisions of the current national standard "Code for Fire Protection Design of Buildings" (GB50016-2014) on the paper-faced gypsum board pasted on the steel keel as a non-combustible material, the paper-faced gypsum board and mineral wool sound-absorbing board installed on the steel keel with a combustion performance of B1 grade can be used as A-class decorative materials. -Excerpt from Fire Safety Technical Practice.

Hello, the general fireproof board is plywood pasted with HPL, and the fireproof level can reach the flameproof level of B1. There is no need to brush fireproof coatings, because fireproof coatings are also B1 flame retardant grades. Anti-corrosion can be done, because plywood is easy to absorb water and swell, rot and deform, so it is still necessary. >>>More