ASTM E2777-20
(Guide)Standard Guide for Vegetative (Green) Roof Systems
Standard Guide for Vegetative (Green) Roof Systems
SIGNIFICANCE AND USE
4.1 Intended Use—The intended use of this guide is to provide general information to practitioners in the fields of vegetative (green) roof design and construction. The guide encourages innovative but responsible vegetative (green) roof design, with a focus on performance and quality assurance. Numerical ranges, practical minimums, and benchmarks that are incorporated in the guide are intended for reference. Design requirements for specific projects vary and, therefore, qualified professionals may prepare designs with features that may vary from the recommendations contained in the guide. In all instances, vegetative (green) roof system designs shall conform to the applicable code requirements of federal, state, provincial, or local agencies with jurisdiction.
4.2 Users—Users of this guide include: planners, developers, architects, landscape architects, engineers, general contractors, subcontractors, owners, facility managers, financial organizations related to building industry, building materials and product manufacturers, government agencies including building officials, and other building professionals.
SCOPE
1.1 This guide identifies terminology, principles, and fundamental concepts including those related to sustainability, technical requirements of construction, and types of vegetative (green) roof systems used on buildings.
1.2 The considerations for sustainable development relative to vegetative (green) roof systems are categorized as follows: environmental, social, and economic as consistent with Guide E2432. (See Appendix X1.)
1.3 This guide discusses technical requirements for vegetative (green) roof systems pertaining to the following categories: plants, media, wind scour resistance, soil reinforcement, separation or filter layers, drain layers, water retention layers, protection layers, and root penetration barriers.
1.4 This guide addresses intensive and extensive vegetative (green) roof systems for roofs up to 15 % slope. Roofing/waterproofing membranes and insulation are key components of vegetative (green) roof systems, but technical requirements regarding their role in such roof systems is beyond the scope of this guide.
Note 1: ASTM Technical Committees D08 and C16 have jurisdiction over the development of standards for roofing/waterproofing membranes and insulations, respectively. Some of their existing standards may be helpful in the evaluation of membranes and insulation used in vegetative (green) roof systems. As these two committees develop standards for such roofs, this guide will be revised appropriately.
1.5 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.
1.6 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.
1.7 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: E2777 − 20
Standard Guide for
1
Vegetative (Green) Roof Systems
This standard is issued under the fixed designation E2777; 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 ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This guide identifies terminology, principles, and fun-
mendations issued by the World Trade Organization Technical
damental concepts including those related to sustainability,
Barriers to Trade (TBT) Committee.
technical requirements of construction, and types of vegetative
(green) roof systems used on buildings.
2. Referenced Documents
1.2 The considerations for sustainable development relative 2,3
2.1 ASTM Standards:
to vegetative (green) roof systems are categorized as follows:
C88/C88M Test Method for Soundness of Aggregates by
environmental, social, and economic as consistent with Guide
Use of Sodium Sulfate or Magnesium Sulfate
E2432. (See Appendix X1.)
D1079 Terminology Relating to Roofing and Waterproofing
1.3 This guide discusses technical requirements for vegeta- D1987 TestMethodforBiologicalCloggingofGeotextileor
tive (green) roof systems pertaining to the following catego- Soil/Geotextile Filters
ries: plants, media, wind scour resistance, soil reinforcement, D2974 Test Methods for Moisture,Ash, and Organic Matter
separation or filter layers, drain layers, water retention layers, of Peat and Other Organic Soils
protection layers, and root penetration barriers. D3786/D3786M Test Method for Bursting Strength of Tex-
tile Fabrics—Diaphragm Bursting StrengthTester Method
1.4 This guide addresses intensive and extensive vegetative
D4354 Practice for Sampling of Geosynthetics and Rolled
(green) roof systems for roofs up to 15 % slope. Roofing/
Erosion Control Products (RECPs) for Testing
waterproofing membranes and insulation are key components
D4439 Terminology for Geosynthetics
of vegetative (green) roof systems, but technical requirements
D4491/D4491M Test Methods for Water Permeability of
regardingtheirroleinsuchroofsystemsisbeyondthescopeof
Geotextiles by Permittivity
this guide.
D4595 Test Method for Tensile Properties of Geotextiles by
NOTE 1—ASTM Technical Committees D08 and C16 have jurisdiction
the Wide-Width Strip Method
over the development of standards for roofing/waterproofing membranes
and insulations, respectively. Some of their existing standards may be
D4716/D4716M Test Method for Determining the (In-plane)
helpful in the evaluation of membranes and insulation used in vegetative
Flow Rate per Unit Width and Hydraulic Transmissivity
(green) roof systems.As these two committees develop standards for such
of a Geosynthetic Using a Constant Head
roofs, this guide will be revised appropriately.
D4751 Test Methods for Determining Apparent Opening
1.5 The values stated in inch-pound units are to be regarded
Size of a Geotextile
as standard. The values given in parentheses are mathematical
D4759 Practice for Determining the Specification Confor-
conversions to SI units that are provided for information only
mance of Geosynthetics
and are not considered standard.
D4873/D4873M Guide for Identification, Storage, and Han-
1.6 This standard does not purport to address all of the
dling of Geosynthetic Rolls and Samples
safety concerns, if any, associated with its use. It is the
D5262 Test Method for Evaluating the Unconfined Tension
responsibility of the user of this standard to establish appro-
Creep and Creep Rupture Behavior of Geosynthetics
priate safety, health, and environmental practices and deter-
D5617 Test Method for Multi-Axial Tension Test for Geo-
mine the applicability of regulatory limitations prior to use.
synthetics
1.7 This international standard was developed in accor-
D5818 Practice for Exposure and Retrieval of Samples to
dance with internationally recognized principles on standard-
Evaluate Installation Damage of Geosynthetics
1 2
This guide is under the jurisdiction of ASTM Committee D08 on Roofing and For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Waterproofing and is the direct responsibility of Subcommittee D08.24 on Sustain- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ability. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Feb. 1, 2020. Published February 2020. Originally the ASTM website.
3
approved i
...
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: E2777 − 14 E2777 − 20
Standard Guide for
1
Vegetative (Green) Roof Systems
This standard is issued under the fixed designation E2777; 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 guide identifies terminology, principles, and fundamental concepts including those related to sustainability, technical
requirements of construction, and types of vegetative (green) roof systems used on buildings.
1.2 The considerations for sustainable development relative to vegetative (green) roof systems are categorized as follows:
environmental, social, and economic as consistent with Guide E2432. (See Appendix X1.)
1.3 This guide discusses technical requirements for vegetative (green) roof systems pertaining to the following categories:
plants, media, wind scour resistance, soil reinforcement, separation or filter layers, drain layers, water retention layers, protection
layers, and root penetration barriers.
1.4 This guide addresses intensive and extensive vegetative (green) roof systems for roofs up to 15 % slope. Roofing/
waterproofing membranes and insulation are key components of vegetative (green) roof systems, but technical requirements
regarding their role in such roof systems is beyond the scope of this guide.
NOTE 1—ASTM Technical Committees D08 and C16 have jurisdiction over the development of standards for roofing/waterproofing membranes and
insulations, respectively. Some of their existing standards may be helpful in the evaluation of membranes and insulation used in vegetative (green) roof
systems. As these two committees develop standards for such roofs, this guide will be revised appropriately.
1.5 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.
1.6 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.7 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
2,3
2.1 ASTM Standards:
C88C88/C88M Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
D1079 Terminology Relating to Roofing and Waterproofing
D1987 Test Method for Biological Clogging of Geotextile or Soil/Geotextile Filters
D2974 Test Methods for Moisture, Ash, and Organic Matter of Peat and Other Organic Soils
D3786/D3786M Test Method for Bursting Strength of Textile Fabrics—Diaphragm Bursting Strength Tester Method
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
D4439 Terminology for Geosynthetics
D4491D4491/D4491M Test Methods for Water Permeability of Geotextiles by Permittivity
D4595 Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method
D4716/D4716M Test Method for Determining the (In-plane) Flow Rate per Unit Width and Hydraulic Transmissivity of a
Geosynthetic Using a Constant Head
D4751 Test Methods for Determining Apparent Opening Size of a Geotextile
1
This guide 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 May 1, 2014Feb. 1, 2020. Published June 2014February 2020. Originally approved in 2014. Last previous edition approved in 2014 as
E2777 – 14. DOI: 10.1520/E2777-1410.1520/E2777-20.
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.
3
Whenever a specific version of a standard is not identified, the most recent edition of the standard shall apply.
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