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ASTM D4990-97a(2020)
Standard Specification for Coal-Tar Glass Felt Used in Roofing and Waterproofing (Includes all amendments and changes 5/15/2020).
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NORM herausgegeben am 1.5.2020
Informationen über die Norm:
Bezeichnung normen: ASTM D4990-97a(2020)
Ausgabedatum normen: 1.5.2020
SKU: NS-993816
Zahl der Seiten: 2
Gewicht ca.: 6 g (0.01 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D4990-97a(2020) :
This specification covers glass felt impregnated with coal tar intended to be used with coal tar pitch in the construction of built-up roofs and waterproofing systems. The felt shall be a thin, porous sheet of uniformly distributed glass fibers, with or without the addition of reinforcing stranded glass yarns, and bonded with a water-resistant resinous binder. Longitudinal and transverse breaking strength, pliability, width, area, net dry mass, parting agent and stabilizer content, moisture content, desaturated mass, bituminous saturant (coal tar) content, and ash content are among the property requirements to which the glass felts should conform to.
Keywords:
built-up roofs, coal tar, glass felt, waterproofing,, ICS Number Code 91.100.50 (Binders. Sealing materials)
Ergänzende Informationen
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1.1 This specification covers glass felt impregnated with coal-tar intended to be used with coal-tar pitch conforming to the appropriate requirements of Specification D450/D450M in construction of built-up roofs and in the construction of waterproofing systems. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 The following safety hazards caveat pertains only to the Test Methods portion, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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