ISO 5658-4: 燃烧测试－火焰的延伸－第4部分：垂直样件垂直火焰的中等规模测试
日期:2010-03-23 00:00
aces at an angle greater than 20 from the horizontal without any external ventilation. This type of flame spread can occur in both planar sloping surfaces and stepped surfaces such as stairs. Flame spread in these situations can become very rapid and can cause serious problems in escape ways such as staircases. When assessing stepped or sloping surface materials, it may be more appropriate to use a vertical flame spread test rather than a test in which the specimen is horizontal.
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12/23 14:19