Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tham khảo tài liệu 'thiết kế đề phòng hỏa hoạn và lối thoát', kỹ thuật - công nghệ, kiến trúc - xây dựng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Building regulations require that due consideration must be given in buildings to - the flammability of building materials - the duration of fire resistance of the components expressed in terms of fire resistance classifications - the integrity of the sealing of openings - the arrangement of escape routes. The aim is to prevent the start and spread of a fire stem the spread of smoke and facilitate the escape or rescue of persons and animals. In addition consideration must be given to effective extinguishing of a fire. Active and passive precautions must be taken to satisfy these requirements. Active precautions are those systems that are automatically deployed in the event of fire passive precautions are the construction solutions in the building and its components. Active precautions include smoke and fire alarm systems sprinkler systems water spray extinguisher plant co2 extinguishing installations powder and foam extinguisher plant and automatic smoke and heat venting systems. Passive precautions relate mainly to minimum structural sections casings and coatings. In addition to these other important measures are the layout of rising mains installation of fire doors and fire windows construction of supporting floors water cooling of hollow steel profiles and the dimensioning of casings and coatings for steel profiles. Fire detectors A fire detector is a part of the fire alarm system and can trigger a transmitting device that raises the alarm in a remote control centre. There are automatic and nonautomatic fire detectors. The latter are those which can be activated manually. Automatic fire detectors are parts of the overall fire alarm system that sense changes in specific physical and or chemical parameters either continuously or sequentially in set time intervals to detect a fire within the monitored area. They must be - installed in sufficient numbers and be suited to the general arrangement of the area to be monitored - selected according to the fire risk - .