çat? sinei yang?n merdivenleri, yang?na dayan?kl? malzemelerden strüktürlm?? olmal?d?r. Ba?kaca, yang?n merdivenlerinin intizaml? bak?m?n?n mimarilmas? ve dayan?kl? olmalar?n?n sa?lanmas? önemlidir.Due to their smoke-proof feature, they also protect people from smoke poisoning in the event of a fire. These doors, also known birli emergency exit… Read More