SCIENTIFIC BASIS OF THE CREATION AND APPLICATION OF EQUIPMENT FOR TESTING ROOFS FOR RESISTANCE TO EXTERNAL FIRE INFLUENCE

Abstract

This article examines and analyzes the domestic and foreign regulatory framework, guidelines and technical documents, information brochures, manuals, handbooks, test protocols and other literary sources, information on the Internet. In the countries of the European space, fire safety requirements have been established for roofs and roofing materials, both for roofing materials and for roofs as part of structures, which helps to limit the spread of fire in buildings and structures during a fire.

It has been proven that there is a need to create equipment for testing resistance to external fire exposure in accordance with DSTU CEN/TS 1187:2016 (method 2) covering buildings (roofs) and establishing fire classification according to DSTU EN 13501-5:2016. A passport, a technical description, an operating manual, a program and a stand verification method have been developed. The initial verification of the stand was carried out and it was put into operation.

Approbation of the test method was carried out on the created stand through experimental studies of five types of roofing materials that are widely used on construction sites in Ukraine using two bases (substrates) of combustible and non-combustible material at air flow speeds of 2 m/s and 4 m /s above the sample surface.

According to the results of this work, it was established that the maximum relative deviation of the result of measuring the length of the damaged (charred) part of the samples is in the range from 1.2% to 23.3% - for the roof and from 0.7% to 27.5% - for the base.