Issue: 4(40), 2015. Series: Multi-Topic

FIRE RESISTANCE OF COATINGS FROM PROFILED SHEETING WITH SUSPENDED CEILING WITH AIR GAP

UDK: 669.812.3

Zharkov A. F., Zharkov F. A., Chesnokova O. G.

The article presents the results of calculations of RI fire resistance and strength of different variants of suspended ceilings and coatings with the use of magnesium oxide sheets (MOS), insulation, various profiled sheeting H57, H60, H75, roll-formed profiles, suspensions, and the size of the air gap. The authors analyze the effect of the size of the air gap between the sheets of MOS on the temperature distribution in the design, strength in metal suspensions and sheeting. When calculating structural heterogeneity of thermo-physical properties of materials, and nonlinearity of the thermo-physical properties of air are taken into account. Other materials are accepted with constant thermo-physical properties.