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Encyclopedia > Fire door
Fire-resistance rated door
Fire-resistance rated door

A fire door is a type of door, or closure used as a passive fire protection item within buildings to prevent the spread of fire. It is usually the only means of allowing people to pass through a fire-resistance rated wall assembly. Image File history File links Download high resolution version (668x1124, 64 KB) Licensing I, the creator of this work, hereby release it into the public domain. ... Image File history File links Download high resolution version (668x1124, 64 KB) Licensing I, the creator of this work, hereby release it into the public domain. ... This article is about the architectural feature. ... Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... Buildings are combinatorial structures on which groups act; the theory of buildings was introduced by Jacques Tits and expounded in Kenneth S. Browns excellent monograph Buildings. ... For other uses, see Fire (disambiguation). ... International time/temperature curves used to run commercial furnaces for testing the Fire-resistance rating of passive fire protection systems, such as firestops, fire doors, wall and floor assemblies, etc. ...

Contents

Components

Fire doors are made of a combination of materials, such as:

Together, these components form a system which holds the rating. For other uses, see Steel (disambiguation). ... It has been suggested that Selenite be merged into this article or section. ... In thermodynamics, the word endothermic describes a process or reaction that absorbs energy in the form of heat. ... Vermiculite is a natural, non toxic mineral that expands with the application of heat. ... For other uses, see System (disambiguation). ...


Apart from the door leaf, there is the doorframe, the door hardware and the structure that holds the fire door assembly in place. This article is about the architectural feature. ...


Door Hardware

Door hardware includes, but is not limited to:

  • manual or automatic closing devices
  • locks
  • latches
  • hinges

Seals

Edges of a fire door usually need to have fire rated seals which can be composed of: International time/temperature curves used to run commercial furnaces for testing the Fire-resistance rating of passive fire protection systems, such as firestops, fire doors, wall and floor assemblies, etc. ...

An intumescent is a substance which swells as a result of heat exposure, thus increasing in volume, and decreasing in density. ... Weatherstripping is the process of sealing openings such as doors, windows, and trunks from the elements. ...

Windows

Some fire doors are equipped with internal windows, which must, likewise, have a rating or have been incorporated at the time of the door test and be subject to product certification. Fire-resistive windows may include: It has been suggested that window frames be merged into this article or section. ... International time/temperature curves used to run commercial furnaces for testing the Fire-resistance rating of passive fire protection systems, such as firestops, fire doors, wall and floor assemblies, etc. ...

  • wire mesh glass
  • liquid sodium silicate fills between two window panes
  • ceramic glasses
  • borosilicate glass

to perform well under fire conditions and/or to provide impact resistance. Wired glass typically withstands the fire, whereas the sodium silicate liquid also acts to insulate heat transfer, due to the endothermic action of this chemical. Sodium silicate, also known as water glass or liquid glass, available in aqueous solution and in solid form, is a compound used in cements, passive fire protection, refractories, textile and lumber processing. ... In thermodynamics, the word endothermic describes a process or reaction that absorbs energy in the form of heat. ...


Regulations

All components are required by law to adhere to bounding requirements in product certification that is acceptable to the local Authority Having Jurisdiction (AHJ) by meeting the requirements of the local building code and fire code. To meet Wikipedias quality standards, this article or section may require cleanup. ... Product certification or product qualification is the cornerstone of all bounding and the process of certifying that a certain product has passed performance and/or quality assurance tests or qualification requirements stipulated in regulations such as a building code and nationally accredited test standards, or that it complies with a... Cranes are essential in large construction projects, such as this skyscraper In project architecture and civil engineering, construction is the building or assembly of any infrastructure. ... A building code, or building control, is a set of rules that specify the minimum acceptable level of safety for constructed objects such as buildings and nonbuilding structures. ...


Combustibility

Fire doors are not necessarily all noncombustible. A fire door is but one of many passive fire protection components used to compartmentalise fire and thus keep it in the compartment of origin, so either it runs out of fuel or it is extinguished, or, at the very least, enough time has been bought to enable evacuation of the building. Fire protection is the prevention and reduction of the hazards associated with fires. ... In structures, such as land-based buildings, traffic tunnels, ships, aerospace vehicles, or submarines, compartmentalization is the fundamental basis and aim of passive fire protection. ... Emergency evacuation is the movement of persons from a dangerous place due to the threat or occurrence of a disastrous event. ... For other uses, see Building (disambiguation). ...


Defeating fire doors

Fire doors are routinely defeated by unwise actions and apathy on the part of their users, many of whom paint over and/or ignore the product certification markings that are prominently displayed both on the door leaves and all the fire door frames, by blocking them open and even running carpets through them. Such extreme neglect is the legal responsibility of the building owner, who must educate occupants on the safe use of all safety related items, to ensure compliance with the fire code. “Stupid” redirects here. ... This article does not cite any references or sources. ... A certification mark is a type of trademark whereby a trader uses the mark to indicate the origin, material, mode of manufacture of products, mode of performance of services, quality, accuracy of other characteristics of products or services. ... This page is a candidate to be moved to Wiktionary. ...


Sometimes fire doors have apparently very large gaps at the foot of them, an inch or two even, allowing air movement, especially in dormitory facilities. This can lead the occupants of a building to question their status as 'real' fire doors. Presumably this doesn't allow fire to spread significantly.


Normal operation

Most fire doors should be kept closed at all times, however some are designed to stay open under normal circumstances, only to shut automatically or manually in the event of a fire. Whichever method is used, the door's movement should never be impaired by a doorstop or other obstacle. Proper bounding of fire doors should be routinely checked and ensured. Door stop may refer to: Door stops are objects or devices used to hold a door open or closed. ...


Some fire doors are held open with an electromagnetic coil, which may be wired to a fire alarm system via relays. If the power fails or the fire alarm is activated, the power to the coil is cut and the door closes on its own. An electromagnet is a type of magnet in which the magnetic field is produced by a flow of electric current. ... A coil is a series of loops. ... A Wheelock MT-24-LSM fire alarm horn and strobe. ...


Rated fire doors are tested to withstand a fire for a specified period. There are 20, 30, 45, 60 and 90-minute-rated fire doors that are certified by an approved laboratory (e.g. Underwriters Laboratories). The certification only applies if all parts of the installation are correctly specified and installed. For example, fitting the wrong kind of glazing may severely reduce the door's fire resistance period. The UL Mark Underwriters Laboratories Inc. ...


Trade responsibility

The building trade typically responsible for door installations is the carpenters. Carpenter at work in Tennessee, June 1942. ...


Architect's responsibility

In building design drawings with poor identification of which walls do in fact have a fire-resistance rating, it is often necessary to check the door schedule in the specifications to be able to trace what walls are rated and how long they are rated for. This is an indicative sign about the architect and the degree of care taken particularly with items relating to passive fire protection. To avoid confusion about any fire protection measures including fire doors, it is best for the architect to provide a separate set of drawings that clearly outlines which walls and floor have a fire-resistance rating and exactly what that rating is. It is also important to point out especially which walls are firewalls and which walls and/or floors are designated as occupancy separations, as the nature of passive fire protection devices that must be used in those special cases can be substantially different from such devices that are used in ordinary fire separations. Specification may refer to several different concepts: Specification (standards) refers to specific standards Specificatio - a legal concept Specification (regression) refers to the practice of translating theory into a regression model Category: ... For other uses, see Architect (disambiguation). ... This article is about firewalls used in construction. ... is a defined and legal term in building construction and building codes. ...


See also


  Results from FactBites:
 
The Fire Resisting Doors - Free advice,on fire safety,prevention,risk ... (3232 words)
Every fire door is therefore required to act as a barrier to the passage of smoke and fire to varying degrees dependent upon its location in a building and the fire hazard associated with the building.
Some doors may be required to fulfil only the first function as they may not be subjected to the full severity of a fire because of their location; others may have the main aim of resisting fire penetration as indicated by the second function.
Identifying fire doors is very difficult however the woodworking association TRADA have coloured plugs inserted in the jamb of the door which indicates the the type of fire door.
Von Duprin - Application Solutions-Command Terms and References (748 words)
Fire codes, such as NFPA 80, outline the minimum requirements for doors and door hardware among other items that may be incorporated into fire door assemblies.
Door manufacturers do have a limited number of holes that may be field-drilled into the door and frame.
This is typically limited to mounting such things as a door closer, and in some cases, may allow the addition of something such as a kick plate or a fire-rated door viewer.
  More results at FactBites »

 
 

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