Doors with Specific Fire Resistance Class

Fire doorsets have a major role in the fulfillment of the rules of buildings fire safety. This paper discusses the main issues related to the fire resistance of fire doors - requirements, test methodology and way of classification of for this type of elements. Comparison of thermal insulation of fire doorsets test specimens depending on the type of structure and side of fire exposure was presented. Temperature rises have been compared on unexposed surface of timber, aluminum and steel doorset leaves in case of the fire acting from the hinge side and the side opposite the hinges.