【 Weak current College 】 fire door in the fire resistance rating, classification

1, fire doors, fire resistance according to three levels:
(1) class a fire door: fire resistance of not less than 1.20h (firewall);
(2) class b fire doors, fire resistance is not lower than 0.90h (evacuation staircases);
(3) class c fire doors, fire resistance is not lower than 0.60h (shaft inspection door)
2. press material classification:
(1) wooden fire door: door frames, door, fireproof sealing strip.
(2) steel fire doors: the door frame, door, fireproof sealing strip.
(3) composite fire doors
3. press the door leaf structure classification: single and multiple fan; belt liangzi, without liangzi, quanbo door. Fireproof glass with silk glass and composite fire resistant glass.
Composite fire resistant glass: two piece or two pieces of flat glass fireproof composite bonding materials into a multi-layered glass fireproof glass.
4. fire protection requirements:
(1) close closed, not channeling Fireworks;
(2) wooden fire door set discouraged hole;
(3) good opening and closing;
(4) shall be hinged door.

(3) fireproof window: refers to a certain time, to meet the requirements of the fire resistance performance.
1, fireproof window addition common Windows functions, but also has the role of the fire.
2, fireproof window by steel window frame and sash (steel plate for the Suppression of forming, in refractory) and fire resistant glass.