Selection Of Steel Fire Doors in Buildings

When the floor area of fixed exhibits and devices is greater than 30 of the exhibition area, the number of evacuees can be calculated according to 0.50 people / m3 of the floor area of the exhibition hall. 5.3.14 the total width of the visiting walkway, closed visiting walkway, evacuation staircase and evacuation exit in the specially decorated booth shall be calculated and determined according to the number of people passing through and the net width of evacuation, And shall comply with the following provisions: 1. The number of evacuees shall be calculated and determined according to the building area of the footpath of 3 persons / m2; 2. The net width of evacuation stairs and evacuation exits is 0.75m/100 people. Exhibition components and exhibition materials. Class a decoration materials should be used for the ceiling of special booth, and decoration materials not lower than Class B1 should be used for wall and ground. The walls and floors of fully enclosed booths are made of class a decoration materials. The ceiling, wall, ground and partition steel fireproof door of the temporary exhibition shed built in the exhibition hall shall adopt decoration materials not lower than B1 level. Non combustible or flame retardant materials shall be used for exhibition components, and their combustion performance and fire resistance limit shall comply with the provisions of. Non combustible materials shall be used for the components of the visiting walkway built in the exhibition arrangement, and its fire resistance limit shall comply with the provisions of the.

The fire resistance limit of the components used to carry large exhibits, exhibits, scenery, projection and other equipment in the exhibition arrangement shall not be lower than the upper 0h. The ceiling decoration materials (including keel) and other decoration materials in the ceiling shall be class a decoration materials. Class a materials shall be used for the internal ventilation and air conditioning air duct and its thermal insulation materials of the special booth. II. For exhibition materials, except for exhibits, the materials used for fixed furniture and booth shall not be lower than grade B1, and the combustion performance of hanging decoration materials shall not be lower than grade B2. In the catering operation area with electric heating equipment in the exhibition hall, the wall and console adjacent to the electric heating equipment shall be made of class a materials. The exhibition materials adjacent to halogen tungsten lamps and other high-temperature lighting lamps set in the exhibition hall shall not be lower than grade B1. The exhibition materials should choose the environmental protection product I fire power supply and power distribution of the flue gas released by combustion. The total power load of the electrical equipment arranged shall be strictly calculated, and the actual operating load shall not exceed the load capacity of the transformer and feeder line. In addition to fire-fighting electrical equipment, the main distribution switch of the exhibition hall or booth shall be set with voltage loss trip. Non fire power distribution circuit shall not be connected to the special power supply circuit of fire equipment.

The nominal supply voltage of temporary electrical devices arranged in the exhibition shall not exceed AC 230V / 400V. The laying of electrical lines, the installation of electrical equipment and the setting of exhibition distribution box shall comply with the relevant provisions of the current Shanghai engineering construction specifications. The conductor selection and laying of the distribution line of fire-fighting electrical equipment shall meet the needs of continuous power supply or signal transmission in case of fire. The distribution lines of all fire-fighting electrical equipment shall be copper core wires or cables, the rated voltage shall not be less than 450V / 750V, and the cross-sectional area of wire core shall not be less than 1.5mm2. The distribution lines of steel fire doors in booths or exhibition areas should be protected by metal pipes. The selection and laying of wires and cables shall meet the following requirements: 1. Ordinary wires and cables can be used when wires and cables of non fire equipment lines are laid in pipes; 2. When wires and cables are laid in bundles, flame-retardant wires and cables shall be used. 3. In places where it is necessary to maintain line integrity and power on within a certain time under the action of external fire, the lines shall be fire-resistant wires and cables or mineral insulated cables; 4 except for wires and cables laid in pipes and concealed, halogen-free low smoke flame retardant wires and cables shall be used.