ASTM C1788-14

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

ABSTRACT
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.
SCOPE
1.1 This standard 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 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.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Jan-2014
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.02 - Specifications and Test Methods for Accessories and Related Products

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1788 −14
Standard Specification for
Non Metallic Plaster Bases (Lath) Used with Portland
1
Cement Based Plaster in Vertical Wall Applications
This standard is issued under the fixed designation C1788; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This standard provides the minimum specification for 3.1 Definitions—For definitions of terms used in these test
use of non metallic plaster bases with portland cement based methods, See Terminology E631.
plaster in vertical wall applications.
3.2 Definitions of Terms Specific to This Standard:
1.2 Units—The values stated in either SI units or inch- 3.2.1 portland cement based plaster, n—in accordance with
pound units are to be regarded separately as standard. The Specification C926.
values stated in each system may not be exact equivalents;
3.2.2 non metallic plaster base (lath), n—material used as a
therefore, each system shall be used independently of the other.
base for portland cement based plaster that is flat or self furred,
Combining values from the two systems may result in non-
that meets or exceeds the requirements set forth in Table 1.
conformance with the standard.
4. Inspection
1.3 Details of construction for a specific assembly to
4.1 Inspection of the material shall be agreed upon between
achieve the required fire resistance, sound or acoustic rating
the purchaser and producer or supplier as part of the purchase
shall be obtained from reports of fire-resistance tests, engineer-
agreement.
ing evaluations, or listings from recognized fire testing, sound
or acoustic laboratories.
5. Rejection
1.4 This standard does not purport to address all of the
5.1 Material that fails to conform to the requirements of this
safety concerns, if any, associated with its use. It is the
specification may be rejected. Rejection should be reported to
responsibility of the user of this standard to establish appro-
the producer or supplier promptly and in writing. In case of
priate safety and health practices and determine the applica-
dissatisfaction with the results of the test, the producer or
bility of regulatory limitations prior to use.
supplier may make claim for a rehearing.
2. Referenced Documents
6. Product Packaging
2
2.1 ASTM Standards:
6.1 Nonmetallicplasterbasesshallbepackagedinsheetsor
C926 Specification for Application of Portland Cement-
rolls in sizes that is convenient for shipping, handling as well
Based Plaster
as application.
E631 Terminology of Building Constructions
C1764 Test Methods for Non Metallic Plaster Bases (Lath)
7. Product Marking
Used with Portland Cement Based Plaster in Vertical Wall
7.1 Markings shall include the name of the producer and
Applications
brand and description of the contents shall be legibly marked
on each pallet or roll.
1
This test method is under the jurisdiction ofASTM Committee C11 on Gypsum
8. Performance Requirements
and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.02 on Specifications and Test Methods for Accessories and
8.1 Ta
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