Installation method of fire door

Fire doors are divided by material: steel fire doors and wooden fire doors are different in installation methods. The fire rating is slightly different. You must pay attention to the details when installing.

First of all, when installing the wooden fireproof door, the size of the door frame should be 20mm smaller than the opening, and the lower foot of the door frame should be buried 20mm below the ground. The door frame should be firmly fixed with the wall, and perpendicular to the corner. The vertical frame and bracing frame shall be straight and at the same angle to avoid planing and sawing. There shall be no less than 3 fixed points on both sides of the door frame, and the spacing shall not be greater than 800mm.

Secondly, during the installation of the steel fire door, considering the bending deformation of the door frame, it is necessary to support the door frame with wooden braces in the width direction of the door frame. The lower foot of the door frame is buried 20 mm below the ground, and then the door frame is welded with the embedded parts on the wall. Then make a hole in the wall at the upper corner of the door frame, and pour concrete of cement, sand and expanded perlite (1:2:5), which can be used after the concrete has set. Requirements for airtightness of fire doors:

There are clear requirements for the size of the gap at each overlap of the fire door: for the steel fire door, the overlap between the leaf and the door frame shall not be less than 10mm, and the gap between the leaf and the door frame on both sides shall not be greater than 4mm. The gap after the installation of the fire door cannot be too large, otherwise the airtightness of the fire door is difficult to guarantee, and it is difficult to reflect its role in restraining fire and smoke spread under fire conditions.

Therefore, the seam width of fire door installation must be strictly controlled. The installation according to these standards and specifications can ensure the effective role of the fire door to a certain extent. Consumers must be on the side of supervision when hiring construction companies to prevent them from jerry building and other problems, so that the fire door will not cause casualties in the event of a fire.