ASTM D7032-15
(Specification)Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails
Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite and Plastic Lumber Deck Boards, Stair Treads, Guards, and Handrails
ABSTRACT
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.
SCOPE
1.1 This specification covers the procedures to establish a performance rating for wood-plastic composite (WPC) deck boards. This specification also defines the procedures to establish a performance rating for WPC guards and 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 (see X1.1).
Note 1: While WPCs may contain wood fiber, the presence of wood fiber in the composite is not required by this standard. Other lignocellulosic materials may be used. For WPC deck boards and guardrail systems evaluated according to this standard, the structural, physical, and fire attributes may or may not exhibit similarity to those of wood due to the presence, type, and quantity of plastic(s) in the composite. WPCs should not be assumed to behave similarly to wood. For example, to address the influence of plastic in the composite, special considerations in the standard address sensitivity to temperature, ultraviolet (UV) exposure, and freeze-thaw resistance.
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 A deck board, and a deck board used as a stair tread, are assigned a span rating indicating its ability to comply with model code specified functions identified for its specific end use. A guard or handrail is recognized for its ability to meet minimum code requirements specified in the appropriate model building code.
1.4 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.
1.5 Details of manufacturing processes are beyond the scope of this specification.
1.6 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.
1.7 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.
1.8 Table of Contents:
Section
Scope
1
Referenced Documents
2
Terminology
3
General Requirements
4
Sampling
4.1
Sample Size
4.2
Conditioning
4.3
Flexural Tests
4.4
Temperature and Moisture Effects
4.5
Ultraviolet (UV) Resistance Test
4.6
Freeze-Thaw Resistance Test
4.7
...
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D7032 −15
Standard Specification for
Establishing Performance Ratings for Wood-Plastic
Composite and Plastic Lumber Deck Boards, Stair Treads,
1
Guards, and Handrails
This standard is issued under the fixed designation D7032; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope cation are valid for any material or combination of materials
used as deck boards, stair treads, guards, or handrails.
1.1 This specification covers the procedures to establish a
performance rating for wood-plastic composite (WPC) deck
1.5 Details of manufacturing processes are beyond the
boards. This specification also defines the procedures to
scope of this specification.
establish a performance rating for WPC guards and handrails.
1.6 The values stated in inch-pound units are to be regarded
The purpose of this specification is to establish the basis for
as standard. The values given in parentheses are mathematical
code recognition of these products or systems in exterior
conversions to SI units that are provided for information only
applications where combustible construction is allowed (see
and are not considered standard.
X1.1).
1.7 This standard does not purport to address all of the
NOTE 1—While WPCs may contain wood fiber, the presence of wood
safety concerns, if any, associated with its use. It is the
fiber in the composite is not required by this standard. Other lignocellu-
responsibility of the user of this standard to establish appro-
losic materials may be used. ForWPC deck boards and guardrail systems
evaluated according to this standard, the structural, physical, and fire
priate safety and health practices and determine the applica-
attributes may or may not exhibit similarity to those of wood due to the
bility of regulatory requirements prior to use.
presence, type, and quantity of plastic(s) in the composite. WPCs should
1.8 Table of Contents:
not be assumed to behave similarly to wood. For example, to address the
influenceofplasticinthecomposite,specialconsiderationsinthestandard
Section
address sensitivity to temperature, ultraviolet (UV) exposure, and freeze-
Scope 1
Referenced Documents 2
thaw resistance.
Terminology 3
1.1.1 The plastic component of wood-plastic composites
General Requirements 4
and plastic lumber covered by this specification shall consist Sampling 4.1
Sample Size 4.2
primarily of thermoplastics.
Conditioning 4.3
Flexural Tests 4.4
1.2 Deck boards, stair treads, guards, and handrails covered
Temperature and Moisture Effects 4.5
by this specification are permitted to be of any code compliant
Ultraviolet (UV) Resistance Test 4.6
shape and thickness (solid or non-solid).
Freeze-Thaw Resistance Test 4.7
Biodeterioration Tests 4.8
1.3 Adeckboard,andadeckboardusedasastairtread,are
Fire Performance Tests 4.9
assigned a span rating indicating its ability to comply with Deck Board Performance Requirements 5
General 5.1
model code specified functions identified for its specific end
Flexural Performance Tests 5.2
use. A guard or handrail is recognized for its ability to meet
Determination of the Unadjusted Allowable 5.3
Load
minimumcoderequirementsspecifiedintheappropriatemodel
Creep-Recovery Test 5.4
building code.
Mechanical Fastener Holding Tests 5.5
Slip Resistance Test 5.6
1.4 Wood-plastic composites and plastic lumber are pro-
Guard and Handrail Performance 6
duced in a broad range of fiber and/or resin formulations. It is
Requirements
recognized that the performance requirements in this specifi- General 6.1
Guardrail System Test Requirements 6.2
One- and Two-Family Dwelling 6.2.1.1
Requirements
1
Handrail Test Requirements (Concentrated 6.3
This specification is under the jurisdiction ofASTM Committee D07 on Wood
Load)
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
Report 7
Wood Products.
Independent Inspection 8
Current edition approved Dec. 1, 2015. Published February 2016. Originally
Manufacturing Standard 9
approved in 2004. Last previous edition approved in 2014 as D7032–14. DOI:
Precision and Bias 10
10.1520/D7032-15.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032−15
E108Test Methods for Fire Tests of Roof Coverings
Section
Keywords 11
E1354Test Method for Heat and Visible Smoke Release
Two-Span Test Method Annex A1
Rates for Materials and Products Using an Oxygen Con-
Commentary Appendix X1
sumption Calorimeter
2. Referenced Documents F1679Test Method for Using a Variable Incidence Tribom-
3
2
eter (VIT) (Withdrawn 2006)
2.1 ASTM Stan
...
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: D7032 − 14 D7032 − 15
Standard Specification for
Establishing Performance Ratings for Wood-Plastic
Composite Deck Boards and Guardrail Systems (Guards or
Handrails)and Plastic Lumber Deck Boards, Stair Treads,
1
Guards, and Handrails
This standard is issued under the fixed designation D7032; 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 procedures to establish a performance rating for wood-plastic composite (WPC) deck boards.
This specification also defines the procedures to establish a performance rating for WPC guards and 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 (see X1.1).
NOTE 1—While WPCs may contain wood fiber, the presence of wood fiber in the composite is not required by this standard. Other lignocellulosic
materials may be used. For WPC deck boards and guardrail systems evaluated according to this standard, the structural, physical, and fire attributes may
or may not exhibit similarity to those of wood due to the presence, type, and quantity of plastic(s) in the composite. WPCs should not be assumed to
behave similarly to wood. For example, to address the influence of plastic in the composite, special considerations in the standard address sensitivity to
temperature, ultraviolet (UV) exposure, and freeze-thaw resistance.
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).
NOTE 2—While WPCs are produced in a broad range of ratios of fiber to resin it is recognized that the performance requirements in this specification
are valid for any material or combination of materials used as deck boards, guards, or handrails. For products made primarily from resin, or for products
that exhibit highly plastic properties (for example, more than 3 % strain without rupture in a standard flexural test under ambient conditions), users are
directed to Specification D6662 for additional guidance.
1.3 A deck board, and a deck board used as a stair tread, are assigned a span rating indicating its ability to comply with model
code specified functions identified for its specific end use. A guard or handrail is recognized for its ability to meet minimum code
requirements specified in the appropriate model building code.
1.4 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.
1.5 Details of manufacturing processes may be proprietary and are beyond the scope of this specification.
1.6 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.
1.7 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.
1.8 Table of Contents:
Section
Scope 1
Referenced Documents 2
Terminology 3
1
This specification is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered Wood
Products.
Current edition approved Dec. 1, 2014Dec. 1, 2015. Published January 2015February 2016. Originally approved in 2004. Last previous edition approved in 20102014 as
D7032 – 10D7032 – 14.A. DOI: 10.1520/D7032-14.10.1520/D7032-15.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032 − 15
Section
General Requirements 4
Sampling 4.1
Sample Size 4.2
Conditioning 4.3
Flexural Tests 4.4
Temperature and Moisture Effects 4.5
Ultraviolet
...
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