ASTM International

Standard Specification for Asphalt Used in Roofing
 N D312/D312M REV A

Annotation

This specification covers four types of asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roof systems. The specification is intended for general classification purposes only, and does not imply restrictions on the slope at which an asphalt must be used.

The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

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 and health practices and determine the applicability of regulatory limitations prior to use.

Автоматический перевод:

Стандартная спецификация для асфальта, используемого в кровле

Эта спецификация покрывает четыре типа асфальта, предназначенного для использования в составной конструкции крыши, конструкции некоторых измененных систем битума, конструкции битумных систем замедлителя пара, и для плат изоляции соблюдения, используемых в различных типах систем крыши. Спецификация предназначается в общих целях классификации только и не подразумевает ограничения на наклон, в котором должен использоваться асфальт.