ASTM C981 - 20

    Standard Guide for Design of Built-Up Bituminous Membrane Waterproofing Systems for Building Decks

    Active Standard ASTM C981 | Developed by Subcommittee: D08.22

    Book of Standards Volume: 04.04


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    Significance and Use

    4.1 This guide provides information and guidelines for the selection of components and the design of a built-up bituminous membrane waterproofing system in building deck construction. Where the state of the art is such that criteria for particular conditions are not established or have numerous variables that require consideration, applicable portions of design considerations, Sections 5 – 16, serve as reference and guidance for selection by the designer of the system.

    1. Scope

    1.1 This guide describes the design of fully adhered built-up bituminous membrane waterproofing systems for plaza deck and promenade construction over occupied spaces of buildings where covered by a separate wearing course.

    1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

    1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.

    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.


    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

    C33/C33M Specification for Concrete Aggregates

    C578 Specification for Rigid, Cellular Polystyrene Thermal Insulation

    C755 Practice for Selection of Water Vapor Retarders for Thermal Insulation

    C920 Specification for Elastomeric Joint Sealants

    C1193 Guide for Use of Joint Sealants

    C1472 Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width

    D41/D41M Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing

    D43/D43M Specification for Coal Tar Primer Used in Roofing, Dampproofing, and Waterproofing

    D173/D173M Specification for Bitumen-Saturated Cotton Fabrics Used in Roofing and Waterproofing

    D226/D226M Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing

    D227/D227M Specification for Coal-Tar-Saturated Organic Felt Used in Roofing and Waterproofing

    D312/D312M Specification for Asphalt Used in Roofing

    D449/D449M Specification for Asphalt Used in Dampproofing and Waterproofing

    D450/D450M Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing

    D1079 Terminology Relating to Roofing and Waterproofing

    D1327/D1327M Specification for Bitumen-Saturated Woven Burlap Fabrics Used in Roofing and Waterproofing

    D1668/D1668M Specification for Glass Fabrics (Woven and Treated) for Roofing and Waterproofing

    D2178/D2178M Specification for Asphalt Glass Felt Used in Roofing and Waterproofing

    D4586/D4586M Specification for Asphalt Roof Cement, Asbestos-Free

    D4601/D4601M Specification for Asphalt-Coated Glass Fiber Base Sheet Used in Roofing

    D4990 Specification for Coal Tar Glass Felt Used in Roofing and Waterproofing

    D5295/D5295M Guide for Preparation of Concrete Surfaces for Adhered (Bonded) Membrane Waterproofing Systems

    D5643/D5643M Specification for Coal Tar Roof Cement, Asbestos Free

    D5898/D5898M Guide for Standard Details for Adhered Sheet Waterproofing

    D5957 Guide for Flood Testing Horizontal Waterproofing Installations

    D6152/D6152M Specification for SEBS-Modified Mopping Asphalt Used in Roofing

    D6162/D6162M Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using a Combination of Polyester and Glass Fiber Reinforcements

    D6163/D6163M Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Glass Fiber Reinforcements

    D6164/D6164M Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Polyester Reinforcements

    D6451/D6451M Guide for Application of Asphalt Based Protection Board

    D6506/D6506M Specification for Asphalt Based Protection Board for Below-Grade Waterproofing

    D6622/D6622M Guide for Application of Fully Adhered Hot-Applied Reinforced Waterproofing Systems

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

    Other Documents

    ACI 301 Specifications for Structural Concrete in Buildings Available from ACI International, PO Box 9094, Farmington Hills, MI 483339094.


    ICS Code

    ICS Number Code 91.100.50 (Binders. Sealing materials)

    UNSPSC Code

    UNSPSC Code 30151505(Roofing membranes); 30121500(Bituminous derivatives)


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

    DOI: 10.1520/C0981-20

    Citation Format

    ASTM C981-20, Standard Guide for Design of Built-Up Bituminous Membrane Waterproofing Systems for Building Decks, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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