Suspended Ceiling Safety for Firefighters in Case of Fire in the Attic

An analysis of the literature indicates a significant number of solutions to ensure the fire safety of residential buildings, the operational characteristics of attic rooms and the operation of nagel joints of wooden structures. At the same time, there are practically no studies of various aspects of the safety of a suspended ceiling for firefighters when extinguishing a fire while they are in the attic. The main purpose of the study is to determine the dynamics of changes in the resistance to pulling out of a non-smooth nail depending on its characteristics under normal conditions. These experiments are necessary to develop the concept of a method of non-destructive testing of the overhead joints of suspended ceiling elements to assess the load-bearing capacity and determine the possibility of firefighters being in the attic when extinguishing a fire. A stand has been created for conducting research. The specified stand allows you to determine the resistance to pulling out a non-smooth nagel from a bar (bars). With the help of this stand, the regularities of the change in the resistance to pulling out the notched and screw nagel, depending on their characteristics, have been established. The results obtained will allow improving approaches to drawing up fire extinguishing plans in buildings with suspended ceilings, determining the locations of firefighters in the attic, developing recommendations for the use of nails with notches and screw nails for the installation of suspended ceilings.