ASTM C629/C629M-22
(Specification)Standard Specification for Slate Dimension Stone
Standard Specification for Slate Dimension Stone
ABSTRACT
This specification covers the material characteristics, physical requirements, and sampling method appropriate to the selection of slate dimension stone for general building and structural purposes. Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone. It specifically excludes roofing slate and slate for industrial uses. Slates shall be selected for either exterior or interior use. The physical property requirements to which slate stones shall adhere to are absorption, abrasion resistance, acid resistance, and modulus of rupture (across grain and along grain).
SCOPE
1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of slate for general building and structural purposes. Refer to Guides C1242 and C1528 for the appropriate selection and use of slate dimension stone.
1.2 Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone.
1.3 It specifically excludes roofing slate (see Specification C406/C406M) and slate for industrial uses.
1.4 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.
1.5 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.
General Information
- Status
- Published
- Publication Date
- 31-Jul-2022
- Technical Committee
- C18 - Dimension Stone
- Drafting Committee
- C18.03 - Material Specifications
Relations
- Effective Date
- 15-Nov-2023
- Effective Date
- 01-Nov-2023
- Effective Date
- 01-Oct-2023
- Refers
ASTM C120/C120M-19 - Standard Test Methods for Flexure Testing of Structural and Roofing Slate - Effective Date
- 01-Nov-2019
- Effective Date
- 01-Nov-2019
- Effective Date
- 01-May-2019
- Effective Date
- 01-Apr-2019
- Effective Date
- 01-Mar-2018
- Effective Date
- 01-Feb-2018
- Effective Date
- 01-Sep-2016
- Effective Date
- 01-May-2016
- Refers
ASTM C120/C120M-15a - Standard Test Methods for Flexure Testing of Structural and Roofing Slate - Effective Date
- 15-Nov-2015
- Effective Date
- 01-Nov-2015
- Effective Date
- 01-Nov-2015
- Effective Date
- 15-Oct-2015
Overview
ASTM C629/C629M-22: Standard Specification for Slate Dimension Stone is a key ASTM International standard that defines the requirements for slate to be used as dimension stone in general building and structural applications. This standard outlines material characteristics, physical property requirements, and sampling methods specific to slate that has been sawn, cut, split, or otherwise finished for use. Notably, molded, cast, or artificially aggregated units and crushed or broken stone are strictly excluded, as are applications involving roofing slate or slate for industrial use. The standard is essential for architects, builders, stone fabricators, and specifiers who need to ensure the quality and durability of slate dimension stone in construction projects.
Key Topics
- Material Characteristics: Specifies that only dimension slate (processed by sawing, cutting, splitting, or similar means) is eligible, excluding any artificially aggregated or broken stone.
- Physical Requirements: Slate must comply with stringent standards for:
- Water Absorption: Limits depend on use (exterior or interior).
- Abrasion Resistance: Especially relevant for foot traffic.
- Acid Resistance: Critical for exterior uses and polluted environments.
- Modulus of Rupture: Minimum strength values are defined for both across and along the grain.
- Classification by Use:
- I Exterior: Stone suitable for outdoor use and must be resistant to weathering and acid exposure.
- II Interior: Stone selected for interior applications with requirements focused on appearance and less exposure to harsh elements.
- Appearance and Defects: Slate must be sound, durable, and aesthetically satisfactory. Control samples should establish acceptable color and texture variability. Stones with spalls, cracks, open seams, pits, or carbonaceous ribbons for exterior exposure are excluded.
- Sampling Methods: Samples for testing are to be representative of the actual material to be used in construction.
Applications
The ASTM C629/C629M-22 standard provides a foundation for the quality assessment of slate dimension stone in a variety of general building and structural projects, ensuring long-term performance and aesthetics. Common applications include:
- Cladding and Facades: Durable and visually appealing slate panels for exterior and interior walls.
- Flooring and Paving: Stone that endures foot traffic due to abrasion-resistant properties.
- Stairs and Steps: Strong, non-slip surfaces in both public and private spaces.
- Ornamental Features: Finely finished slate for design elements where appearance and uniformity are prioritized.
By adhering to this ASTM specification, project stakeholders achieve consistent material quality, optimize longevity, and reduce maintenance needs for slate installations.
Related Standards
For comprehensive project planning and selection, the following related ASTM standards are commonly referenced alongside ASTM C629/C629M-22:
- ASTM C119 - Terminology Relating to Dimension Stone
- ASTM C120/C120M - Test Methods for Flexure Testing of Structural and Roofing Slate
- ASTM C121/C121M - Test Method for Water Absorption of Slate
- ASTM C217/C217M - Test Methods for Weather Resistance of Slate
- ASTM C241/C241M and C1353 - Test Methods for Abrasion Resistance of Stone Subjected to Foot Traffic
- ASTM C1242 - Guide for Selection, Design, and Installation of Dimension Stone Attachment Systems
- ASTM C1528 - Guide for Selection of Dimension Stone
Conclusion
ASTM C629/C629M-22 serves as the primary reference for ensuring quality slate dimension stone in building construction. By specifying rigorous physical and material requirements, it helps maintain high performance, safety, and visual appeal in both interior and exterior architectural stone applications. Adopting this standard is critical for professionals who value durability, reliability, and compliance in stone construction.
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Frequently Asked Questions
ASTM C629/C629M-22 is a technical specification published by ASTM International. Its full title is "Standard Specification for Slate Dimension Stone". This standard covers: ABSTRACT This specification covers the material characteristics, physical requirements, and sampling method appropriate to the selection of slate dimension stone for general building and structural purposes. Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone. It specifically excludes roofing slate and slate for industrial uses. Slates shall be selected for either exterior or interior use. The physical property requirements to which slate stones shall adhere to are absorption, abrasion resistance, acid resistance, and modulus of rupture (across grain and along grain). SCOPE 1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of slate for general building and structural purposes. Refer to Guides C1242 and C1528 for the appropriate selection and use of slate dimension stone. 1.2 Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone. 1.3 It specifically excludes roofing slate (see Specification C406/C406M) and slate for industrial uses. 1.4 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. 1.5 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.
ABSTRACT This specification covers the material characteristics, physical requirements, and sampling method appropriate to the selection of slate dimension stone for general building and structural purposes. Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone. It specifically excludes roofing slate and slate for industrial uses. Slates shall be selected for either exterior or interior use. The physical property requirements to which slate stones shall adhere to are absorption, abrasion resistance, acid resistance, and modulus of rupture (across grain and along grain). SCOPE 1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection of slate for general building and structural purposes. Refer to Guides C1242 and C1528 for the appropriate selection and use of slate dimension stone. 1.2 Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone. 1.3 It specifically excludes roofing slate (see Specification C406/C406M) and slate for industrial uses. 1.4 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. 1.5 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.
ASTM C629/C629M-22 is classified under the following ICS (International Classification for Standards) categories: 91.100.15 - Mineral materials and products. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM C629/C629M-22 has the following relationships with other standards: It is inter standard links to ASTM C1242-23c, ASTM C1242-23b, ASTM C1242-23a, ASTM C120/C120M-19, ASTM C1242-19a, ASTM C119-19, ASTM C1242-19, ASTM C1242-18a, ASTM C1242-18, ASTM C1242-16, ASTM C119-16, ASTM C120/C120M-15a, ASTM C217/C217M-15a, ASTM C120/C120M-15, ASTM C121/C121M-15. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM C629/C629M-22 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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:C629/C629M −22
Standard Specification for
Slate Dimension Stone
This standard is issued under the fixed designation C629/C629M; 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 C241/C241M Test Method forAbrasion Resistance of Stone
Subjected to Foot Traffic
1.1 This specification covers the material characteristics,
C406/C406M Specification for Roofing Slate
physical requirements, and sampling appropriate to the selec-
C1242 Guide for Selection, Design, and Installation of
tion of slate for general building and structural purposes. Refer
Dimension Stone Attachment Systems
to Guides C1242 and C1528 for the appropriate selection and
C1353 Test Method for Abrasion Resistance of Dimension
use of slate dimension stone.
Stone Subjected to Foot Traffic Using a Rotary Platform
1.2 Dimension slate shall include stone that is sawed, cut,
Abraser
split, or otherwise finished or shaped, and shall specifically
C1528 Guide for Selection of Dimension Stone
exclude molded, cast, or otherwise artificially aggregated units
composed of fragments, and also crushed and broken stone.
3. Terminology
1.3 It specifically excludes roofing slate (see Specification
3.1 Definitions—All definitions are in accordance with Ter-
C406/C406M) and slate for industrial uses.
minology C119.
1.4 The values stated in either SI units or inch-pound units
4. Classification
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
4.1 Dimension slate shall be selected for the following uses:
system shall be used independently of the other. Combining
4.1.1 I Exterior.
values from the two systems may result in non-conformance
4.1.2 II Interior.
with the standard.
5. Physical Requirements
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5.1 Slate supplied under this specification shall conform to
ization established in the Decision on Principles for the
the requirements listed in Table 1.
Development of International Standards, Guides and Recom-
5.2 Slate used for exterior applications in ambient acidic
mendations issued by the World Trade Organization Technical
atmospheres or in industrial areas where heavy air pollution
Barriers to Trade (TBT) Committee.
occurs shall be free of carbonaceous ribbons. Slate shall be
sound, durable, and free of spalls, cracks, open seams, pits, or
2. Referenced Documents
other defects that are likely to impair its structural integrity in
2.1 ASTM Standards:
its intended use.
C119 Terminology Relating to Dimension Stone
5.3 Slate shall be selected for overall satisfactory and
C120/C120M Test Methods for FlexureTesting of Structural
natural appearance.
and Roofing Slate
C121/C121M Test Method for Water Absorption of Slate 5.4 The desired color and texture, with their permissible
C217/C217M Test Methods for Weather Resistance of Slate natural variations in material characteristics for all material to
be produced for
...
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: C629/C629M − 15 C629/C629M − 22
Standard Specification for
Slate Dimension Stone
This standard is issued under the fixed designation C629/C629M; 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 covers the material characteristics, physical requirements, and sampling appropriate to the selection of slate
for general building and structural purposes. Refer to Guides C1242 and C1528 for the appropriate selection and use of slate
dimension stone.
1.2 Dimension slate shall include stone that is sawed, cut, split, or otherwise finished or shaped, and shall specifically exclude
molded, cast, or otherwise artificially aggregated units composed of fragments, and also crushed and broken stone.
1.3 It specifically excludes roofing slate (see Specification C406/C406M) and slate for industrial uses.
1.4 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.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
C119 Terminology Relating to Dimension Stone
C120/C120M Test Methods for Flexure Testing of Structural and Roofing Slate
C121/C121M Test Method for Water Absorption of Slate
C217/C217M Test Methods for Weather Resistance of Slate
C241/C241M Test Method for Abrasion Resistance of Stone Subjected to Foot Traffic
C406/C406M Specification for Roofing Slate
C1242 Guide for Selection, Design, and Installation of Dimension Stone Attachment Systems
C1353 Test Method for Abrasion Resistance of Dimension Stone Subjected to Foot Traffic Using a Rotary Platform Abraser
C1528 Guide for Selection of Dimension Stone
3. Terminology
3.1 Definitions—All definitions are in accordance with Terminology C119.
This specification is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is the direct responsibility of Subcommittee C18.03 on Material
Specifications.
Current edition approved Dec. 1, 2015Aug. 1, 2022. Published December 2015September 2022. Originally approved in 1968. Last previous edition approved in 20102015
as C629/C629M – 10.C629/C629M – 15. DOI: 10.1520/C0629_C0629M-15.10.1520/C0629_C0629M-22.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C629/C629M − 22
4. Classification
4.1 Dimension slate shall be selected for the following uses:
4.1.
...
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