Precautions for fire doors.

    Steel fire door price is moderate, but its large, open style more toil and drab, apply is pleasing to the eye, not so much as usual for industrial buildings and class of civil construction, beautiful or building to apply for low, ferial artificial flow of small parts (such as computer room, garage, etc.); A wooden fire door, on the contrary, light dead weight, the opening and closing of motor and the surface decoration can be good, do more, but the price is higher, more used in civil construction or build top grade important occasions.

    Generally, the maximum hole size of each door is about 3.3m, wide - single fan 1.1m, and double fan 3.0m. Engineering design in addition to strictly follow the regulations in place, position, width, grade decoration fire doors open to be partial to set equipment outside, still should pay attention to: fire doors are generally located in contact ways (such as stair, front room, corridor, etc.), just don't put the reliable and convenient when building plane detail design of may after the doors open shade separation way, reduce the effective width, staff coupling fundamental breach. This kind of weather is very prominent in the decentralized way and in the upper chamber, which should be taken seriously and guarded against. Loose mouth problems leading to adjacent partitions are not required. When there is a class a fire door that leads to adjacent fire zones, the high-rise building approves each partition to have only one safe entrance.

    Should be included, because fire steel door only one-way open, if the adjacent partition is only an insurance import, it should has grown two millimeters in the firewall set up two fire doors and depart on both sides to open, the ability to meet the needs of the each other between two partitions dividing. The most commonly adopted is the normally closed fire door, its door fan is in the closed form, the personnel through the period manually opened, after the door fan itself closed; If the bolt and hardware are installed, the speed of the cloud will be slowed. But, in the channel normally closed fire door have the face, often using an impact in light, keep out the line of sight, amidst the inconvenience of malpractices, such as improper running, its door closers and open-close hardware always destroyed by bad failure, form of insurance. Emergence of normally open fire door just solved the above title, everyday its doors were set door is still in the open position, fire door opener active cruelty, department, recovery and normally closed the same defy fire door. Because of the addition of the door opener and the active release system, and sometimes with the active alarm system linkage, it is necessary to open fire doors to increase the cost of the project. Current not to fire doors to accept what the opening and closing of the code for fire protection measures for voluntary rules, can be integrated by the designer thought construction standard to compete, should use the natural instinct, resolution must be needed to build the user's planning and economic factors.