The hottest Beijing new regulations require class

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It is reported that the first local standard in Beijing to regulate building external insulation materials has designed a cup-shaped grinding wheel, which has been drafted and solicited public opinions. According to this standard, for high-rise buildings with a building height of more than 100 meters in Beijing, class a flame retardant materials must be used for external wall insulation materials to ensure safety

in order to ensure the fire safety of high-rise buildings, the forthcoming code for design of external thermal insulation and fire protection of civil buildings plans to stipulate that for residential and public buildings with a building height of more than 100 meters, all external thermal insulation materials must be class a thermal insulation materials, i.e. non combustible materials

insiders, research institutions and colleges and universities said that at present, the color steel plate interlayer used in the construction site is mostly made of flammable materials such as polystyrene. In addition to the special structure of the color steel plate, water and fire extinguishing agent can only be sprayed on the steel plate outside the color steel plate, which makes it more difficult to extinguish the fire. In addition, the combustion of polystyrene foam will produce a large amount of toxic smoke

it is understood that the core materials mainly include polystyrene, polyurethane and rock wool, which can be used for various parts inside the aircraft; If the machine is in standby mode, there are three. The color steel plate of rock wool core material has better fire resistance than polystyrene color steel plate. However, due to its low price, the sales volume of polystyrene color steel plate is much higher than that of rock wool color steel plate

for low rise buildings, the standard is classified and standardized. For curtain wall buildings over 24m, all external insulation layers must use class a insulation materials. However, in consideration of cost, residential and office buildings with a building height of less than 24 meters can use thermoplastic thermal insulation materials, which shrink and melt in case of fire, resulting in melting dripping. However, if this material is used, the fireproof isolation belt shall be set according to the regulations

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