ASTM E2777 - 20

    Standard Guide for Vegetative (Green) Roof Systems

    Active Standard ASTM E2777 | Developed by Subcommittee: D08.24

    Book of Standards Volume: 04.04


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    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.

    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, 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C88/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 FabricsDiaphragm Bursting Strength Tester Method

    D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing

    D4439 Terminology for Geosynthetics

    D4491/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

    D4759 Practice for Determining the Specification Conformance of Geosynthetics

    D4873/D4873M Guide for Identification, Storage, and Handling of Geosynthetic Rolls and Samples

    D5262 Test Method for Evaluating the Unconfined Tension Creep and Creep Rupture Behavior of Geosynthetics

    D5617 Test Method for Multi-Axial Tension Test for Geosynthetics

    D5818 Practice for Exposure and Retrieval of Samples to Evaluate Installation Damage of Geosynthetics

    D6637/D6637M Test Method for Determining Tensile Properties of Geogrids by the Single or Multi-Rib Tensile Method

    D7361 Test Method for Accelerated Compressive Creep of Geosynthetic Materials Based on Time-Temperature Superposition Using the Stepped Isothermal Method

    D7492/D7492M Guide for Use of Drainage System Media with Waterproofing Systems

    D7877 Guide for Electronic Methods for Detecting and Locating Leaks in Waterproof Membranes

    E108 Test Methods for Fire Tests of Roof Coverings

    E136 Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750C

    E631 Terminology of Building Constructions

    E2114 Terminology for Sustainability Relative to the Performance of Buildings

    E2396/E2396M Test Method for Saturated Water Permeability of Granular Drainage Media [Falling-Head Method] for Vegetative (Green) Roof Systems

    E2397/E2397M Practice for Determination of Dead Loads and Live Loads Associated with Vegetative (Green) Roof Systems

    E2398/E2398M Test Method for Water Capture and Media Retention of Geocomposite Drain Layers for Vegetative (Green) Roof Systems

    E2399/E2399M Test Method for Maximum Media Density for Dead Load Analysis of Vegetative (Green) Roof Systems

    E2400/E2400M Guide for Selection, Installation, and Maintenance of Plants for Vegetative (Green) Roof Systems

    E2432 Guide for General Principles of Sustainability Relative to Buildings

    E2788/E2788M 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

    CSA Standard

    CSA A123.24


    ICS Code

    ICS Number Code 91.060.20 (Roofs)

    UNSPSC Code

    UNSPSC Code 30151500(Roofing materials)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E2777-20

    Citation Format

    ASTM E2777-20, Standard Guide for Vegetative (Green) Roof Systems, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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