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    ASTM D7032 - 17

    Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails

    Active Standard ASTM D7032 | Developed by Subcommittee: D07.02

    Book of Standards Volume: 04.10

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    This specification presents the standard procedures for establishing the performance rating of wood-plastic composite (WPC) deck boards and guardrail systems (guards or handrails). The purpose of this specification is to establish the basis for code recognition of these products or systems in exterior applications where combustible construction is allowed. The general requirements foe these products shall be dictated by their performance in the following test methods: flesural tests; temperature and moisture effects; ultraviolet resistance test; freeze-thaw resistance test; biodeterioration tests; and fire performance tests. Deck boards shall additionally examined by: creep-recovery test; determination of unadjusted allowable load; mechanical fastener holding tests; and slip resistance test. In the same manner, guards and handrails shall additionally be analyzed through concentrated load tests, and one- and two-family dwelling requirements.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers procedures to establish a performance rating for wood-plastic composite and plastic lumber for use as exterior deck boards, stair treads, guards, and handrails. The purpose of this specification is to establish a basis for code recognition of these products or systems in exterior applications. The products addressed in this specification are considered combustible.

    Note 1: While wood-plastic composites contain wood or other cellulosic materials, the presence of wood or other cellulosic materials in plastic lumber is not required by this specification. Due to non-wood materials in wood-plastic composites and plastic lumber the structural, physical, fire, and other attributes may not be similar to those of wood.

    1.1.1 The plastic component of wood-plastic composites and plastic lumber covered by this specification shall consist primarily of thermoplastics.

    1.2 Deck boards, stair treads, guards, and handrails covered by this specification are permitted to be of any code compliant shape and thickness (solid or non-solid).

    1.3 Wood-plastic composites and plastic lumber are produced in a broad range of fiber and/or resin formulations. It is recognized that the performance requirements in this specification are valid for any material or combination of materials used as deck boards, stair treads, guards, or handrails.

    1.4 Details of manufacturing processes are beyond the scope of this specification.

    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 and health practices and determine the applicability of regulatory requirements prior to use.

    1.7 Table of Contents:





    Referenced Documents




    General Requirements




     Sample Size




     Flexural Tests


     Temperature and Moisture Effects


     Ultraviolet (UV) Resistance Test


     Freeze-Thaw Resistance Test


     Biodeterioration Tests


     Fire Performance Tests


    Deck Board Performance Requirements




     Flexural Performance Tests


     Determination of the Unadjusted Allowable Load


     Creep-Recovery Test


     Mechanical Fastener Holding Tests


     Slip Resistance Test


    Guard and Handrail Performance Requirements




     Guardrail System Test Requirements


      One- and Two-Family Dwelling Requirements

     Handrail Test Requirements (Concentrated Load)




    Independent Inspection


    Manufacturing Standard


    Precision and Bias




    Two-Span Test Method

    Annex A1


    Appendix X1

    1.8 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

    D9 Terminology Relating to Wood and Wood-Based Products

    D198 Test Methods of Static Tests of Lumber in Structural Sizes

    D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

    D883 Terminology Relating to Plastics

    D1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials

    D1413 Test Method for Wood Preservatives by Laboratory Soil-Block Cultures

    D1554 Terminology Relating to Wood-Base Fiber and Particle Panel Materials

    D1761 Test Methods for Mechanical Fasteners in Wood

    D1929 Test Method for Determining Ignition Temperature of Plastics

    D1972 Practice for Generic Marking of Plastic Products

    D2017 Test Method of Accelerated Laboratory Test of Natural Decay Resistance of Woods

    D2047 Test Method for Static Coefficient of Friction of Polish-Coated Flooring Surfaces as Measured by the James Machine

    D2394 Test Methods for Simulated Service Testing of Wood and Wood-Base Finish Flooring

    D2565 Practice for Xenon-Arc Exposure of Plastics Intended for Outdoor Applications

    D2915 Practice for Sampling and Data-Analysis for Structural Wood and Wood-Based Products

    D3345 Test Method for Laboratory Evaluation of Solid Wood for Resistance to Termites

    D4000 Classification System for Specifying Plastic Materials

    D4092 Terminology for Plastics: Dynamic Mechanical Properties

    D4761 Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material

    D5764 Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Based Products

    D6109 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastic Lumber and Related Products

    D6662 Specification for Polyolefin-Based Plastic Lumber Decking Boards

    E84 Test Method for Surface Burning Characteristics of Building Materials

    E108 Test Methods for Fire Tests of Roof Coverings

    E1354 Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter

    F1679 Test Method for Using a Variable Incidence Tribometer (VIT)

    G154 Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials

    Other References

    2009 International Building Code International Code Council, Inc. Available from International Code Council (ICC), 5203 Leesburg Pike, Suite 600, Falls Church, VA 22041-3401, http://www.intlcode.org.

    2009 International Residential Code International Code Council, Inc.

    AWPA Standard E10

    AWPA Standard E1 Standard Method for Laboratory Evaluation for Determination of Resistance to Subterranean Termites Available from American Wood-Preservers Association (AWPA), P.O. Box 361784, Birmingham, AL 35236-1784, http://www.awpa.com.

    ICS Code

    ICS Number Code 79.080 (Semi-manufactures of timber)

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

    DOI: 10.1520/D7032-17

    Citation Format

    ASTM D7032-17, Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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