Score Designs Damage

  • Posted on January 3, 2014 at 3:11 am

Corruption is considered to be charred materials from which the design is completed, at a depth of more than 0.2 cm, and their fusion with signs of burning – charring or the formation of a melt in black with bright colors color source material, as well as burnout, separation with the collapse of the materials from which the sample is made, the formation of cracks passing through the entire layer of material. Damage to allow for (describe) stages: – first stage – without opening the sample to the registration of damage, their size and location (if available) – second stage – with the opening of the sample, with registration and a description of damage in their sizes. In this case, registered damage to the sample to a depth of 0.2 cm or more. Are not considered damage: – length 10 cm – Single collapse of a structural mass of not more than 1,0 kg – Single-through burn-out area of no more than 2000 cm2. Novelist is likely to increase your knowledge. The thermal flow and temperature values represent in tabular form, depending on the time of fire exposure in comparison with similar parameters in the calibration chamber for firing a subsequent determination that there is thermal effect. Allowed to determine the extent of damage to the sample on the results of one test.

The results of measurements of the extent of damage of the sample is allowed to round up to 1 cm test results, measurements damage reflect in the minutes (record) the prescribed form. To the protocol (the report) should be attached to the design documentation detailing. Thermal insulation system of external walls of buildings and their cladding with the outer side are divided into classes of fire danger in accordance with Table D.2 of the least favorable indicators. Symbol class of fire danger systems insulation of external walls of buildings and structures and their linings from the outside includes the letters "SR" and figures, while the figure in brackets indicates the duration of heat exposure in a test sample in minutes. When replacement materials in the construction of thermal insulation and cladding exterior building envelope, the class of fire hazard which was previously set for re-used materials must be defined: – heat of combustion material on the stb en iso 1716 – a group of flammability in accordance with gost 30244 (average maximum temperature of flue gases, the presence of burning droplets of melt, the degree of damage on the length and weight, duration of self-burning) – Flame Spread Index gost 12.1.044-89. In this case, the fire-technical characteristics of the proposed materials must be iden-energy, or better than replacement. Identification of materials used in thermal insulation system or tiling should be carried out in terms of calorific value of stb en iso 1716. Subject to the fluctuation of the index from a previously defined by no more than 5% for the worse materials are identical.

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