Christabel Daniella. door. July 20th , 2017.
Door- A door hinge is a heavier duty hinge that is generally larger in size and made from heavy duty materials like iron or brass. These hinges are meant to carry some more weight and are generally used three of four per door.
Certain buildings or remodeling jobs might require a fire rated door. They are often installed in public buildings, in office buildings and in places like dormitories. Another frequent use of these doors is in exit stairwells. Sometimes a residence may require a fire rated door, but this is less common. Doors for the home can be found, but if they are not installed and used correctly they won't be effective.
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Fire doors are built to withstand the effects of lire for periods of half, one or two hours depending on where the door is to be used. You may have to fit one to comply with the Building Regulations for example, if you build a garage on to your house, any door connecting the house to the garage must have at least half an hour's fire resistance. A fire-resisting door should protect against smoke as well as checking the movement of the fire. The doors are commonly referred to by their fire performance - a 30/30 door or a 30/20 door, for instance. Fire-resisting doors are usually flush doors formerly with plasterboard or asbestos cores but nowadays increasingly with flaxboard or chipboard cores. They should be fitted in fire-resisting frames and usually need to be self-closing.
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