External wooden fire door refers to the door frame, door leaf frame, door leaf panel made of wood or wood products, and the fire resistance limit reaches the "GB50045-95 High-rise Civil Building Design Fire Protection Code".
Fire doors are one of the facilities for building fire separation. They are usually used on firewalls, stairwell entrances or pipe shaft openings, and play an important role in reducing fire losses.
In the design code for fire protection of high-rise civil buildings, fire doors are classified as Class A, B, and C, and their fire resistance limits are specified. Class A doors shall not be less than 1.5 hours, Class B doors shall not be less than 1 hour, and Class C doors shall not be less than 0.5 hours.
External wooden fire doors are divided into two series, full board and half glass, and various specifications of single and double leaf. The opening size and structural size of the wooden fire door shall meet the requirements of GB 5824 "Series of Door and Window Opening Dimensions for Buildings".
1. The door frame and the door leaf whose thickness is greater than 50mm should be connected by double tenon. When assembling the frame and fan, the tongue and groove should be tightly fitted, glued together with glue, and tightened with glue wedges.
2. When making plywood doors (including fiberboard doors), the frame and the horizontal flute must be on the same plane, and the surface layer, the frame and the horizontal flute should be glued under pressure. Two or more vent holes should be drilled in the horizontal flute and the upper and lower risers to prevent degumming or swelling due to moisture.
3. The production quality of the door should meet the following requirements:
(1) The surface should be clean or frosted, and there should be no planing marks, burrs and hammer marks.
(2) The line type of the frame and fan should meet the design requirements, and the corners and seams should be tight and flat.
(3) Small and short material plywood doors and plywood or fiberboard door leaves are not allowed to be degummed, and plywood is not allowed to go through the surface veneer and crack.