METHOD TO DETECT PARAMETERS OF LOCAL FIRE Russian patent published in 2015 - IPC G01N33/46 G01N25/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to the field of investigation of materials of building structures of a building using thermal means. The method to detect parameters of a local fire includes technical visual inspection of building structures in a wood floor of a building, which were exposed to thermal gradient under conditions of the local fire; detection of a scheme of fire impact at components of the floor; determination of type and grade of building wood, indices of its moisture and density in natural condition, solidity of elements of the wooden floor, finding the normative resistance of building wood for bending and speed of its burning, differing by the fact that technical visual inspection of the building wooden floor is complemented with instrumental measurements of geometric dimensions of the burning area, a control cell of the floor in the fire site is assigned, the area of cross section of the floor cell openings is measured, the index of floor cell opening is calculated; the thickness of the charring layer is determined in the cross section of wood floor elements; the combustible material volume value is calculated, as well as mass speed of burning of building pine wood in the floor cell and coefficient of reduction of pine wood burning speed, then they detect duration of local fire and maximum temperature of local fire, which are calculated on the basis of specified ratios.

EFFECT: invention provides for valid assessment of main parameters of past fire damage, as well as reduced labour intensity and timing for technical visual inspection of thermally damaged elements of a building wooden floor.

2 cl, 4 dwg, 1 ex