Views: 0 Author: D and D Hardware Publish Time: 2021-06-21 Origin: D and D Hardware
When use in a fire-resisting door assembly, the door leaf should be hung on single-axis hinges in accordance with local and national regulations. The hinge installed on the fire door should be able to achieve the expected fire rating, and when installed on the fire door, the hinge should enable the door closing device to reliably close the door leaf from any angle and overcome the resistance of the latch or any seal.
From the experience of building escape and general safety, it is very important to install suitable hinged doors on the escape route. When a fire or other emergency occurs, it can help people in the building to escape from the building quickly and easily. In general, all doors on the escape route should be opened in the direction of emergency travel.
At the same time, if the escape door is the final exit of the building, there are some additional requirements for the safety of the door, that is, to prevent intrusion and burglary. In this case, the design of the hinge should ensure that when the door is closed, the hinge will not be removed or separated to ensure that the building will secured against unauthorized entry.
If the escape door is part of the fire department of the building, there will be additional requirements to ensure that the installed hinge does not compromise the fire-resisting performance of the door.
Critical Recommendations:
Unless otherwise noted ，it is recommended to apply both to hinges for fire-resisting door assemblies and to those fitted to doors on escape routes.
2.2.1
If placed on the market after 1 July 2013, the chosen hinge:
1. Must be CE Marked to BS EN 1935, including its Annex B.
2. And preferably, should be provided with certification by an approved third party certification body.
2.2.2
When used on fire-resisting doors the product must have demonstrated its ability to be suitable for the intended purpose, by inclusion in satisfactory fire test to BS EN 1634-1 or BS EN 1634-2, on a type of door assembly and configuration in which it is proposed to be used.
An approved third party certification or testing body should provide this evidence.
2.2.3
The strength is a feature must be correct for the size of door and mass to which it is to be fitted, bearing in mind:
1. The application of the door (main entrance, toilet lobby, duct door)
2. Position of door stop if being used (position on floor or wall in relation to width of door)
3. Whether subject to factors such as heavy traffic use, abusive treatment
4. Whether or not a door closer is being used (with or without back-check)
5. Size (height and width) and mass (weight) of the door number and position of hinges
6. Whether the door is on an accessible route and therefore needs to satisfy Part M of the Building Regulations
2.2.4
A regular program of maintenance must be undertaken to ensure that the correct operational performance of the hinge is maintained for the life of the building.
2.2.5
Rising butt hinges are NOT recommended for use on fire-rated doors.
The Building Regulations 1991 Approved Document B 2000/2002 Edition stated that rising butt hinges, which do not meet the criteria of a self-closing device, were acceptable where the door was:
1) To (or within) a dwelling
2) Between a dwelling house and its garage, or
3) In a cavity barrier
2.2.6
Spring hinges (single and double action) are NOT recommended for use on fire-rated doors
There are many forms of this hinge. The common factor with hinges of this type is the large amount of metal incorporated in their construction. This is likely to cause the early integrity failure in a timber door. In addition, the spring tension which acts as an integral self-closing device has an inherently low resistance to pressure in the closed, or near closed, position, making it difficult for such hinges to hold the door in the closed position without the assistance of the latch.
2.2.7
For timber doors and frames, fixing screw should be not less than size No. 8 (3.8mm) and not less than 30mm in length.
For steel doors the dimensions may vary according to the method of fixing in accordance with their individual test report.
2.2.8
Hinges for use on final exit escape doors should have a corrosion resistance of not less than Grade 3 of BS EN 1670.
2.2.9
CE Marked hinges should be marked according to clause ZA.3 of BS EN 1935.
D and D HARDWARE CE butt hinges are tested to BS EN 1935-Grade 13, EN1634-260 minutes, with CE Mark, Grade 304 stainless steel, square corner, template drilled, button tipped five knuckle butt hinge, suitable for use on fire/ smoke check doors up to 120 kg, with suitable screw pack.
D and D HARDWARE's fire door hinges are used for rigorous safety testing (including BS EN, CE, UL, ANSI and BHMA) for education, health-care, hospitality, residential and commercial applications.
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David Jian
Mob: 0086-139 2903 7292
Email: David@dndhardware.com, sales@danddhardware.com
Jobby Zhang
Mob: 0086-137 2599 9617
Email: jobby@dndhardware.com
