A fire door is a door that meets the requirements for fire resistance stability, integrity, and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, vertical shafts.
In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.
Simply put, a fire door must be installed as long as the entrance door is facing the elevator front room (vertical or horizontal buffer space between the elevator and the entrance door), or facing the open stairs, fire exits, etc. In addition, for unit houses of 11 floors and 11 floors, fire doors should be installed in the entrance door to the stairwell; if the floor is 18 or 18, the door must also be fitted with fire doors. If the door of the house must open the front room, this door should also be equipped with a fire door.
Installation order of fire doors:
Dash - stand frame - install door leaf and accessories.
1. Dash, draw the position of the door frame according to the size, direction and direction of the design.
2, the vertical door frame: first remove the fixed plate at the lower part of the door frame, where the height of the frame is greater than the height of the door leaf is greater than 30mm, the ground on both sides of the hole must be provided with a groove. The door frame is generally buried 20mm below ±0.00 elevation, and the frame size must be the same. The allowable error is less than 1.5mm and the diagonal tolerance is less than 2mm.
3. Install the door leaf and accessories: the gap around the door frame is firmly fixed with 1:2 cement mortar or fine stone concrete with a strength of not less than 1OMPa. It should be guaranteed to be integral with the wall. After curing and solidification, paint the hole and wall. After the completion of the painting, install the door leaf, hardware fittings and related fire protection devices. After the door is closed, the door joints should be even and even, and the opening is free and light. There must be no overtightening, too loose and rebound.