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Combustibility is a measure of how easily a substance will set on fire, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored. It is also important in processes that produce combustible substances as a by-product. Special precautions are usually required for substances that are easily combustible. These measures may include installation of fire sprinklers or storage remote from possible sources of ignition. Substances with low combustibility may be selected for construction where the fire risk needs to be reduced. Like apartment buildings, houses, offices and so on. If combustible resources are used there is greater chance of fire accidents and deaths. Fire resistant substances are preferred for building materials and furnishings. == Code Definitions == For an Authority Having Jurisdiction, combustibility is defined by the local code. In the National Building Code of Canada, it is defined as follows: *''Combustible: A material which fails to meet acceptance criteria of (CAN/ULC-S114, Standard Method of Test for Determination of Noncombustibility in Building Materials ).'' :This leads to the definition of noncombustible: *''Non-combustible: means that a material meets the acceptance criteria of (CAN4-S114, "Standard Method of Test for Determination of Non-Combustibility in Building Materials )". BS 476-4:1970 defines a test for combusibility in which 3 specimens of a material are heated in a furnace. Non-combustibile materials are defined as those for which none of the 3 specimens either: *cause the temperature reading from either of two thermocouples to rise by 50 degrees Celsius or more above the initial furnace temperature, or * is observed to flame continuously for 10 seconds or more inside the furnace. Otherwise, the material shall be deemed combustible. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Combustibility」の詳細全文を読む スポンサード リンク
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