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ASTM C1788-20

Current Revision

Standard Specification for Non Metallic Plaster Bases (Lath) Used With Portland Cement Based Plaster in Vertical Wall Applications

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1.1 This specification provides the minimum specification for use of non metallic plaster bases with Portland cement based plaster in vertical wall applications.

1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.3 Details of construction for a specific assembly to achieve the required fire resistance, sound, or acoustic rating shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing, sound or acoustic laboratories.

1.4 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.

1.5 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.


This standard covers the use of non-metallic plaster bases with portland cement-based plaster in vertical wall applications and provides details of requirements with respect to inspection of the material as well as rejection, product packaging and marking, and performance.


SDO ASTM: ASTM International
Document Number C1788
Publication Date Oct. 15, 2020
Language en - English
Page Count 2
Revision Level 20
Supercedes
Committee C11.02
Publish Date Document Id Type View
Oct. 15, 2020 C1788-20 Revision
Feb. 1, 2014 C1788-14 Revision
March 1, 2019 C1788-14R19 Reaffirmation