1.1 <\/b>This part of ISO 5658 specifies an intermediate-scale method of test for measuring the vertical spread<\/p>\n
(upward and downward) of flame over a specimen of a product orientated in the vertical position. A measure of<\/p>\n
lateral spread can also be obtained. It provides data suitable for comparing the performance of materials,<\/p>\n
composites or assemblies, which are used as the exposed surfaces of walls or other vertically orientated products<\/p>\n
in construction applications. Some products with profiled surfaces can also be tested with a modified procedure<\/p>\n
representative of the end-use conditions of the product.<\/p>\n
1.2 <\/b>Upward flame spread is not limited to surfaces which are vertical. It is recognized that an enhanced form of<\/p>\n
upward, wind-aided flame spread can also occur on surfaces at an angle greater than 20\u00b0 from the horizontal<\/p>\n
without any external ventilation. This type of flame spread can occur in both planar sloping surfaces and stepped<\/p>\n
surfaces such as stairs. Flame spread in these situations can become very rapid and can cause serious problems<\/p>\n
in escape ways such as staircases. When assessing stepped or sloping surface materials, it may be more<\/p>\n
appropriate to use a vertical flame spread test rather than a test in which the specimen is horizontal.<\/p>\n
1.3 <\/b>This part of ISO 5658 is applicable to the measurement and description of the properties of materials,<\/p>\n
products, composites or assemblies in response to radiative heat in the presence of non-impinging pilot flames<\/p>\n
under controlled laboratory conditions. The heat source may be considered to represent a single burning item such<\/p>\n
as a wastepaper bin or an upholstered chair within an enclosure, and this scenario would generally be considered<\/p>\n
to apply during the early developing stage of a fire (see ISO\/TR 11696-1 and ISO\/TR 11696-2). This part of<\/p>\n
ISO 5658 should not be used alone to describe or appraise the fire hazard or fire risk of materials, products,<\/p>\n
composites or assemblies under actual fire conditions.<\/p>\n","protected":false},"excerpt":{"rendered":"
Reaction to fire tests \u2014 Spread of flame \u2014 Part 4: Intermediate-scale test of vertical spread of flame with vertically oriented specimen<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2001-06<\/td>\n 44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":619094,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[240,2634],"product_tag":[],"class_list":{"0":"post-619084","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-220-50","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/619084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/619094"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=619084"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=619084"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=619084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}