Index spread of flame
A few species have a flame-spread index slightly less than 75 and qualify as Class B or II materials. The chart below compiles information from various sources A few species have a flame-spread index slightly less than 75 and qualify as Class B or II materials. The chart below compiles information from various sources Many factors influence fire spread, including the building's interior finish material. Find out what the flame spread ratings means at Acoustical Surfaces. Most untreated wood products have a Flame Spread Index of 60–190 in the ASTM E84 tunnel test. A wide range of flammability test methods is used for FLAME SPREAD INDEX. There is a common misconception about the flame spread index (FSI). In common usage, materials are classified by range of the flame Flame. Spread Index is based on the ASTM E84/UL723 “Test for Surface Burning Characteristics of Building Materials”;. Roof Covering Class is based on ASTM Flame-. Flame-. Smoke-. Western. Spread. Spread Developed. Softwoods. Rating. Class. Index. Source. Western Larch. 45. B. 20. HPVA. Engelmann Spruce. 55.
Flame spread or surface burning characteristics rating is a ranking derived by laboratory The result is derivation of a Flame Spread Index (FSI), which is a non-dimensional number which is placed on a relative scale in which
2603.3 of the 2012 IBC defines maximum flame spread and smoke developed index limits for a foam plastic to be used in commercial construction: Flame 20 Jun 2016 The classification system measures how fast the fire spreads and how applied to the end of the material to test the FSR (flame spread rate). modify afterglow requirement for flame spread of Index 1, Index 2, and Index 3 materials.;. — include statement for flame spread testing in regard to interlining index of 25 or less. No code limits even though the reported flame spread index range is 74-1722 for ½" oriented strand board (OSB) wood structural panels. Flame spread and smoke developed index are reported. However, there is not necessarily a relationship between these two measurements. This standard is used Flame Spread and Smoke Development PEH 9-20-2011 Rev. 5-3-2013 Page 1 of 1 i The Flame Spread Index is a comparative measure, expressed as a
Flame Spread Index Surface. Burning Characteristics of. Building Materials. ANSI /UL 723. (ASTM E84,. NFPA 255). United States. 6 mm and 12 mm, all colors.
FLAME SPREAD INDEX. There is a common misconception about the flame spread index (FSI). In common usage, materials are classified by range of the flame Flame. Spread Index is based on the ASTM E84/UL723 “Test for Surface Burning Characteristics of Building Materials”;. Roof Covering Class is based on ASTM
Flame spread and smoke developed indexes are reported. However, there is not necessarily a relationship between these two measurements. This standard is
Fire resistant façades, cladding and linings Fire Resistant Facade Cement Systems - Deemed to comply with Australian standards Spread of flame index = 0. Rigid PVC has an oxygen index of 45-50, compared to 21-22 for wood and Many PVC formulations exhibit limited flame-spread in standard laboratory tests. during the test. Materials are classified into one of three groups based on their tested flame spread characteristics. These groups and their flame spread indexes ASTM E162 is used to assess flame spread via a radiant panel index. This test method is frequently used in regulations, particularly for transportation means the index number for spread of flame as determined by AS/NZS 1530.3. 5.2.10 Stage. means a floor or platform in a Class 9b building on which
Sometimes it is necessary to know the fire characteristics of materials that are The flame spread and smoke development indexes are then calculated and
• Class A or I: Flame spread 25 or less (FRTW, some FR surface coatings) • Class B or II: Flame spread 26 to 75 (other FR surface coatings) • Class C or III: Flame spread 76 to 200 (untreated lumber and plywood) FRTW must have a flame spread of 25 or less in the 10-minute ASTM E-84/UL 723 test, Glow Wire Flammability Index Flame or glowing must self extinguish within 30 seconds after removal of the glow wire. Glow Wire Ignition Temperature No flame or glowing for more than 5 seconds while the glow wire is applied. Other Testing Methods Flame spread is primarily a surface burning characteristic of materials, and a flame -spread rating is a way to compare how rapid flame spreads on the surface of one material compared to another. Flame -spread rating requirements are applied in the National Building Code of Canada (NBCC) 1 primarily to regulate interior finishes.
ported flame spread index represents a product containing a mixture of these species. When lumber is from a single species refer to the specific species flame spread index. 4. Flame spread index cannot be directly determined from the referenced source; however, the reported Flame Spread Class is deemed to be a reasonable estimate FLAME SPREAD INDEX ASTM E84/UL723 classifies products by the flame spread index. The index is a numerical reference and is determined by the response of the material during a ten minute test. Class A or I: Flame spread Index 25 or less Class B or II: Flame spread Index 26 to 75 Class C or III: Flame spread Index 76 to 200