ASTM E2788/E2788M-24
(Specification)Standard Specification for Use of Expanded Shale, Clay, and Slate (ESCS) as a Mineral Component in the Growing Media and the Drainage Layer for Vegetative (Green) Roof Systems
Standard Specification for Use of Expanded Shale, Clay, and Slate (ESCS) as a Mineral Component in the Growing Media and the Drainage Layer for Vegetative (Green) Roof Systems
ABSTRACT
This specification covers the quality and grading of expanded shale, clay and slate (ESCS) for use as a mineral component of growing media and drainage layer for extensive and intensive vegetative (green) roof systems. ESCS is a lightweight, highly porous and low-density ceramic material produced by expanding and vitrifying select shale, clay or slate in a rotary kiln. The requirements are intended to cover only materials having normal or average gradation characteristics. This specification also describes the materials and manufacture, as well as physical and chemical properties.
SCOPE
1.1 This specification covers the quality and grading of the following materials for use as a mineral component of growing media and drainage layer for extensive and intensive vegetative (green) roof systems. The requirements are intended to cover only materials having normal or average gradation characteristics. Procedures covered in this specification are not intended for evaluating the performance nutrients associated with vegetative (green) roof growing media. Where other materials are to be used, appropriate limits suitable to their use must be specified.
1.2 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 nonconformance with the standard.
1.3 This standard offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.
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.
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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: E2788/E2788M − 24
Standard Specification for
Use of Expanded Shale, Clay, and Slate (ESCS) as a Mineral
Component in the Growing Media and the Drainage Layer
1
for Vegetative (Green) Roof Systems
This standard is issued under the fixed designation E2788/E2788M; 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 1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This specification covers the quality and grading of the
ization established in the Decision on Principles for the
following materials for use as a mineral component of growing
Development of International Standards, Guides and Recom-
media and drainage layer for extensive and intensive vegetative
mendations issued by the World Trade Organization Technical
(green) roof systems. The requirements are intended to cover
Barriers to Trade (TBT) Committee.
only materials having normal or average gradation character-
istics. Procedures covered in this specification are not intended
2. Referenced Documents
for evaluating the performance nutrients associated with veg-
2
2.1 ASTM Standards:
etative (green) roof growing media. Where other materials are
C29/C29M Test Method for Bulk Density (“Unit Weight”)
to be used, appropriate limits suitable to their use must be
and Voids in Aggregate
specified.
C88/C88M Test Method for Soundness of Aggregates by
1.2 The values stated in either SI units or inch-pound units
Use of Sodium Sulfate or Magnesium Sulfate
are to be regarded separately as standard. The values stated in
C127 Test Method for Relative Density (Specific Gravity)
each system may not be exact equivalents; therefore, each 3
and Absorption of Coarse Aggregate (Withdrawn 2024)
system shall be used independently of the other. Combining
C136/C136M Test Method for Sieve Analysis of Fine and
values from the two systems may result in nonconformance
Coarse Aggregates
with the standard.
C330/C330M Specification for Lightweight Aggregates for
1.3 This standard offers an organized collection of informa-
Structural Concrete
tion or a series of options and does not recommend a specific
C331/C331M Specification for Lightweight Aggregates for
course of action. This document cannot replace education or
Concrete Masonry Units
experience and should be used in conjunction with professional
D75/D75M Practice for Sampling Aggregates
judgment. Not all aspects of this guide may be applicable in all
D3080/D3080M Test Method for Direct Shear Test of Soils
circumstances. This ASTM standard is not intended to repre-
Under Consolidated Drained Conditions
sent or replace the standard of care by which the adequacy of D5883 Guide for Use of Rotary Kiln Produced Expanded
a given professional service must be judged, nor should this
Shale, Clay or Slate (ESCS) as a Mineral Amendment in
document be applied without consideration of a project’s many Topsoil Used for Landscaping and Related Purposes
unique aspects. The word “Standard” in the title of this
E2114 Terminology for Sustainability
document means only that the document has been approved E2397/E2397M Practice for Determination of Dead Loads
through the ASTM consensus process.
and Live Loads Associated with Vegetative (Green) Roof
Systems
1.4 This standard does not purport to address all of the
E2399/E2399M Test Method for Maximum Media Density
safety concerns, if any, associated with its use. It is the
for Dead Load Analysis of Vegetative (Green) Roof
responsibility of the user of this standard to establish appro-
Systems
priate safety, health, and environmental practices and deter-
E2777 Guide for Vegetative (Green) Roof Systems
mine the applicability of regulatory limitations prior to use.
1 2
This specification is under the jurisdiction of ASTM Committee D08 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.24 contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
on Sustainability. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Jan. 1, 2024. Published January 2024. Originally the ASTM website.
3
approved in 2011. Last previous edition approved in 2018 as E2788/E2788M – 18. The last approved version of this historical standard is referenced on
DOI: 10.1520/E2788_E2788M-24. www.astm.org.
Copyright © ASTM Internatio
...
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: E2788/E2788M − 18 E2788/E2788M − 24
Standard Specification for
Use of Expanded Shale, Clay, and Slate (ESCS) as a Mineral
Component in the Growing Media and the Drainage Layer
1
for Vegetative (Green) Roof Systems
This standard is issued under the fixed designation E2788/E2788M; 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 quality and grading of the following materials for use as a mineral component of growing media
and drainage layer for extensive and intensive vegetative (green) roof systems. The requirements are intended to cover only
materials having normal or average gradation characteristics. Procedures covered in this specification are not intended for
evaluating the performance nutrients associated with vegetative (green) roof growing media. Where other materials are to be used,
appropriate limits suitable to their use must be specified.
1.2 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-conformancenonconformance with the 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.
1.3 This standard offers an organized collection of information or a series of options and does not recommend a specific course
of action. This document cannot replace education or experience and should be used in conjunction with professional judgment.
Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace
the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied
without consideration of a project’s many unique aspects. The word "Standard"“Standard” in the title of this document means only
that the document has been approved through the ASTM consensus process.
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.
1
This specification is under the jurisdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.24 on
Sustainability.
Current edition approved March 1, 2018Jan. 1, 2024. Published March 2018January 2024. Originally approved in 2011. Last previous edition approved in 20112018 as
E2788 – 11.E2788/E2788M – 18. DOI: 10.1520/E2788_E2788M-18.10.1520/E2788_E2788M-24.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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E2788/E2788M − 24
2. Referenced Documents
2
2.1 ASTM Standards:
C29/C29M Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate
C88C88/C88M Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
3
C127 Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate (Withdrawn 2024)
C136/C136M Test Method for Sieve Analysis of Fine and Coarse Aggregates
C330/C330M Specification for Lightweight Aggregates for Structural Concrete
C331/C331M Specification for Lightweight Aggregates for Concrete Masonry Units
D75/D75M Practice for Sampling Aggregates
D3080D3080/D3080M Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions
D5883 Guide for Use of Rotary Kiln Produced Expanded Shale, Clay or Slate (ESCS) as a Mineral Amendment in Topsoil
...
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