ASTM C1861-23a
(Specification)Standard Specification for Lathing and Furring Accessories, and Fasteners, for Interior and Exterior Portland Cement-Based Plaster
Standard Specification for Lathing and Furring Accessories, and Fasteners, for Interior and Exterior Portland Cement-Based Plaster
ABSTRACT
This specification covers the minimum requirements for lathing and furring accessories and fasteners used as components of interior and exterior portland cement-based plaster assemblies for facilitating lathing and furring installation, cement plaster application, and functionality of the completed stucco cladding assembly. Lathing and furring accessories, and fasteners shall be free of deleterious amounts of rust, oil, or other foreign matter that could cause bond failure or unsightly discoloration; shall include key attachment flanges or solid attachment flanges; and shall be configured to accommodate application of the specified cement plaster thickness. Lathing accessories serving a drainage function shall include a drainage surface and a solid attachment flange. lathing accessories to facilitate drainage include weep screed, designated drainage screed, and perforations; lathing accessories to reinforce corners include internal corner reinforcement and external corner reinforcement; lathing accessories to reduce cracking include expansion joint and control joint; furring accessories include rod hanger, strap hanger, cold-rolled channel furring, and Z-furring.
SCOPE
1.1 This specification contains the minimum requirements for lathing and furring accessories, and fasteners, as components of interior and exterior portland cement-based plaster assemblies, used to facilitate lathing and furring installation (Specifications C1063, C1787), cement plaster application (Specification C926), and functionality of the completed stucco cladding assembly.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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.
General Information
Relations
Buy Standard
Standards Content (Sample)
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.
Designation: C1861 − 23a
Standard Specification for
Lathing and Furring Accessories, and Fasteners, for Interior
1
and Exterior Portland Cement-Based Plaster
This standard is issued under the fixed designation C1861; 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* A653/A653M Specification for Steel Sheet, Zinc-Coated
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
1.1 This specification contains the minimum requirements
by the Hot-Dip Process
for lathing and furring accessories, and fasteners, as compo-
B69 Specification for Rolled Zinc
nents of interior and exterior portland cement-based plaster
B221 Specification for Aluminum and Aluminum-Alloy Ex-
assemblies, used to facilitate lathing and furring installation
truded Bars, Rods, Wire, Profiles, and Tubes
(Specifications C1063, C1787), cement plaster application
C926 Specification for Application of Portland Cement-
(Specification C926), and functionality of the completed stucco
Based Plaster
cladding assembly.
C954 Specification for Steel Drill Screws for the Application
1.2 The values stated in inch-pound units are to be regarded
of Gypsum Panel Products or Metal Plaster Bases to Steel
as standard. The values given in parentheses are mathematical
Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in
conversions to SI units that are provided for information only
Thickness
and are not considered standard.
C1002 Specification for Steel Self-Piercing Tapping Screws
1.3 This standard does not purport to address all of the for Application of Gypsum Panel Products or Metal
safety concerns, if any, associated with its use. It is the
Plaster Bases to Wood Studs or Steel Studs
responsibility of the user of this standard to establish appro- C1063 Specification for Installation of Lathing and Furring
priate safety, health, and environmental practices and deter-
to Receive Interior and Exterior Portland Cement-Based
mine the applicability of regulatory limitations prior to use. Plaster
1.4 This international standard was developed in accor-
C1787 Specification for Installation of Non Metallic Plaster
dance with internationally recognized principles on standard- Bases (Lath) Used with Portland Cement Based Plaster in
ization established in the Decision on Principles for the
Vertical Wall Applications
Development of International Standards, Guides and Recom-
D1784 Classification System and Basis for Specification for
mendations issued by the World Trade Organization Technical Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlo-
Barriers to Trade (TBT) Committee.
rinated Poly(Vinyl Chloride) (CPVC) Compounds
D4216 Specification for Rigid Poly(Vinyl Chloride) (PVC)
2. Referenced Documents
and Related PVC and Chlorinated Poly(Vinyl Chloride)
2
2.1 ASTM Standards:
(CPVC) Building Products Compounds
A240/A240M Specification for Chromium and Chromium-
F1667 Specification for Driven Fasteners: Nails, Spikes, and
Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
Staples
3
Vessels and for General Applications
2.2 AISI Standards:
A580/A580M Specification for Stainless Steel Wire
AISI S220 North American Standard for Cold-Formed Steel
A641/A641M Specification for Zinc–Coated (Galvanized)
Framing—Nonstructural Members
Carbon Steel Wire
AISI S240 North American Standard for Cold-Formed Steel
Structural Framing
1
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility
3. Terminology
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and
3.1 Definitions:
Related Products.
Current edition approved Oct. 1, 2023. Published October 2023. Originally
3.1.1 Definitions shall be in accordance with Specification
approved in 2017. Last previous edition approved in 2023 as C1861 – 23. DOI:
C1063.
10.1520/C1861-23A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American Iron and Steel (AISI), 25 Massachusetts Avenue, NW,
the ASTM website. Suite 800, Washington, DC 20001, https://www.steel.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 -------
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1861 − 23 C1861 − 23a
Standard Specification for
Lathing and Furring Accessories, and Fasteners, for Interior
1
and Exterior Portland Cement-Based Plaster
This standard is issued under the fixed designation C1861; 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*
1.1 This specification contains the minimum requirements for lathing and furring accessories, and fasteners, as components of
interior and exterior portland cement-based plaster assemblies, used to facilitate lathing and furring installation (Specifications
C1063, C1787), cement plaster application (Specification C926), and functionality of the completed stucco cladding assembly.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
A580/A580M Specification for Stainless Steel Wire
A641/A641M Specification for Zinc–Coated (Galvanized) Carbon Steel Wire
A653/A653M Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the
Hot-Dip Process
B69 Specification for Rolled Zinc
B221 Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
C926 Specification for Application of Portland Cement-Based Plaster
C954 Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs
from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness
C1002 Specification for Steel Self-Piercing Tapping Screws for Application of Gypsum Panel Products or Metal Plaster Bases
to Wood Studs or Steel Studs
C1063 Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
1
This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.02 on Specifications and Test Methods for Accessories and Related Products.
Current edition approved March 15, 2023Oct. 1, 2023. Published March 2023October 2023. Originally approved in 2017. Last previous edition approved in 20222023
as C1861 – 22.C1861 – 23. DOI: 10.1520/C1861-23.10.1520/C1861-23A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1861 − 23a
C1787 Specification for Installation of Non Metallic Plaster Bases (Lath) Used with Portland Cement Based Plaster in Vertical
Wall Applications
D1784 Classification System and Basis for Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated
Poly(Vinyl Chloride) (CPVC) Compounds
D4216 Specification for Rigid Poly(Vinyl Chloride) (PVC) and Related PVC and Chlorinated Poly(Vinyl Chloride) (CPVC)
Building Products Compounds
F1667 Specification for Driven Fasteners: Nails, Spikes, and Staples
3
2.2 AISI Standards:
AISI S220 North American Standard for Cold-Formed Steel Framing—Nonstructural Members
AISI S240 North American Standard for Cold-Formed Steel Structural Framing
3. Terminology
3.1 Definitions:
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.