27.5.10

FireProof Defintion

Columbia Encyclopedia:fireproofing


Fireproofing
method of making normally combustible materials as nearly noncombustible as possible. Fireproofing generally applies to textiles and construction materials that are treated with a solution or coating of some substance that will tend to retard their ignition.

Fireproofing of Textiles
Textiles for use indoors are soaked in fire-retardant solutions made up mostly of boric acid and borax. Textiles for outdoors are soaked with chlorinated paraffin, chlorinated synthetic resins, or chlorinated rubber. The standard for effectiveness of these treatments is the weight of chemicals remaining after the materials dry. Large areas of textiles are brushed or sprayed, but they gain little resistance against severe fire exposure; the treatment is mainly a guard against lit cigarettes and short exposure to flame.

Rain, washing, or dry cleaning tends to leach the chemicals from the fabric; therefore latex is often added to waterproof the material. At one time asbestos could be mixed with natural fibers to increase their fire resistance, but now only glass or ceramic fibers are permitted. The fire resistance of a textile is generally expressed in hours of endurance to a standard temperature furnace.

Fireproofing of Construction Materials
In construction, heavy wood timbers have a relatively high fire resistance, because fire tends to burn very slowly inward from the surface, leaving enough sound timber in the center to prevent collapse. Wood framing can also be impregnated with ammonium phosphate solution or covered with special mastics. Stucco or other incombustible facing also gives a wood frame some protection from fire.

To be classed as fire resistive, buildings must be made of reinforced concrete or protected steel that will stand considerable fire with minor damage; even a building made of unprotected steel may be damaged. While steel retains its strength up to a very high temperature, it fails rapidly at temperatures over 1,000°F (540°C). Structural steel may be protected in a number of ways. It can be faced with brick, concrete, or tile; however, construction with these materials usually adds too much weight to a building. A protective layer of concrete over all surfaces of a beam or over the steel bars in reinforced concrete has to be at least 2.5 in. (6.4 cm) thick to be effective; hollow clay tile used to cover beams and girders has to be at least 4 in. (10 cm) thick. Thus most buildings use lightweight fireproofing such as gypsum, perlite, and vermiculite mixed in plaster, concrete, and mineral fiber; one inch (2.5 cm) of such materials will absorb an equivalent amount of heat as 2.5 in. (6.4 cm) of concrete.

Some recent buildings circulate water inside each column, protecting the structure against meltdown. Asbestos is no longer used, because inhalation of the fibers causes abestosis, a fatal lung disease; fireproof board made from a mixture of asbestos and cement is used only rarely. Concrete is still used, but mostly as a thin slab on floors. In urban areas, buildings must also provide protection against fire in neighboring buildings through fireproof exterior walls-preferably windowless, since windows are fire openings. Standards for fireproofing are set by organizations such as the American Insurance Association and the International Conference of Building Officials


Sherex fire Proof Material Co.:

防火門 | Fire Door

防火門及窗產品 | 防火產品 | 防火五金產品 | 產品認證

Joint Billion :Fire Door

26.5.10

Fire protection

Fire protection is the study and practice of mitigating the unwanted effects of fires. It involves the study of the behaviour, compartmentalisation, suppression and investigation of fire and its related emergencies, as well as the research and development, production, testing and application of mitigating systems. In structures, be they land-based, offshore or even ships, the owners and operators are responsible to maintain their facilities in accordance with a design-basis that is rooted in laws, including the local building code and fire code, which are enforced by the Authority Having Jurisdiction. Buildings must be constructed in accordance with the version of the building code that is in effect when an application for a building permit is made. Building inspectors check on compliance of a building under construction with the building code. Once construction is complete, a building must be maintained in accordance with the current fire code, which is enforced by the fire prevention officers of a local fire department. In the event of fire emergencies, Firefighters, fire investigators, and other fire prevention personnel called to mitigate, investigate and learn from the damage of a fire. Lessons learned from fires are applied to the authoring of both building codes and fire codes.


In the United States, this term is used by engineers and code officials when referring only to active and passive fire protection systems, and does usually not encompass fire detection systems such as fire alarms or smoke detection.



Sherex fire Proof Material Co.:

防火門 | Fire Door

防火門及窗產品 | 防火產品 | 防火五金產品 | 產品認證

Joint Billion :Fire Door

6.5.10

UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM

UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM 防火玻璃

Fire Resistance up to 2 hours Integrity & Insulation
Compliance to BS476: Part 22 :1987

UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 01 UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 02 UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 03

Fire Door Features

  • The core materials is composed of high density solid hardwood that is strong enough to accommodate the FRP performance as well as durability.
  • Alternative proprietary rockwool core with more than 85% reduction in the usage of timber could be achieved the same FRP performance as well as environmental protective function.
  • Intumescent seals are installed either around door leaf or door frame to seal up the door gaps in case of fire.
  • Clear glazing of various shapes could be designed and installed on the fire-rated doors to provide vision and design function.
  • Excellent flexibility in the selection of decorative facings for various project needs, such as timber veneers or color plastic laminated facing.
UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 04 UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 05 UNI-DOOR FIRE-RATED TIMBER DOOR SYSTEM - 06

Sherex Fire-Proof Material Co : Joint Billion Fire Door 防火門

防火門 | Fire Door

防火門及窗產品 | 防火產品 | 防火五金產品 | 產品認證