Abstract
Analysis of the results of experimental studies of wood columns mode of behaviour both having fire retardant coating based on OSB slabs and without any coating under standard time – temperature curve fire conditions was realized. An assumption was made that thermocouple wires could be positioned along isotherm at a distance of at least50 mmfrom measuring thermojunctions (otherwise disturbance of the structure of isotherm itself possible). Due to specific features of thermocouples positioning within the specimen, this assumption calls in question of credibility of the obtained results of temperature indices measuring. Bearing this in mind we prepared calculation scheme of the specimen of wood column under study. We have composed finite elements scheme of specimen under study for heat engineering calculations. We simulated temperature distributions within the wood column specimen section at various moments of time and substantiated the obtained results. It was revealed in the course of the study conducted that the obtained results were adequate for relative error was as small as ca. 4.5% and Fisher test did not exceed appropriate tabulated value. Thus, assumption made does not affect in general credibility of the results of measuring thermal values within the layers of specimens obtained during fire tests.
Highlights
Bearing wooden constructions stand for significant potion in building engineering
Proper experimental results are necessary for such methods, the former are obtained by conducting full-fledged fire tests
Purpose of this paper lies in the check-up of credibility of the results obtained when measuring temperature within specimens of wood columns when performing full-scale fire tests in a special furnace
Summary
Bearing wooden constructions stand for significant potion in building engineering. Various statistical analyses confirm that tendency to use wood in building constructions will remain. Some methods for the determination of fire resistance rating of wood bars and slabs were developed based on conduction of appropriate experimental studies. Purpose of this paper lies in the check-up of credibility of the results obtained when measuring temperature within specimens of wood columns when performing full-scale fire tests in a special furnace.
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