ASTM D7032-14
(Specification)Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite Deck Boards and Guardrail Systems (Guards or Handrails)
Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite Deck Boards and Guardrail Systems (Guards or 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.
1.2 Deck boards, 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 Details of manufacturing processes may be proprietary and 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:
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
Ultraviol...
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Designation:D7032 −14
StandardSpecification for
Establishing Performance Ratings for Wood-Plastic
Composite Deck Boards and Guardrail Systems (Guards or
1
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 1.4 Details of manufacturing processes may be proprietary
and are beyond the scope of this specification.
1.1 This specification covers the procedures to establish a
performance rating for wood-plastic composite (WPC) deck
1.5 The values stated in inch-pound units are to be regarded
boards. This specification also defines the procedures to
as standard. The values given in parentheses are mathematical
establish a performance rating for WPC guards and handrails.
conversions to SI units that are provided for information only
The purpose of this specification is to establish the basis for
and are not considered standard.
code recognition of these products or systems in exterior
1.6 This standard does not purport to address all of the
applications where combustible construction is allowed (see
safety concerns, if any, associated with its use. It is the
X1.1).
responsibility of the user of this standard to establish appro-
NOTE 1—While WPCs may contain wood fiber, the presence of wood priate safety and health practices and determine the applica-
fiber in the composite is not required by this standard. Other lignocellu-
bility of regulatory requirements prior to use.
losic materials may be used. ForWPC deck boards and guardrail systems
1.7 Table of Contents:
evaluated according to this standard, the structural, physical, and fire
attributes may or may not exhibit similarity to those of wood due to the Section
Scope 1
presence, type, and quantity of plastic(s) in the composite. WPCs should
Referenced Documents 2
not be assumed to behave similarly to wood. For example, to address the
Terminology 3
influenceofplasticinthecomposite,specialconsiderationsinthestandard
General Requirements 4
address sensitivity to temperature, ultraviolet (UV) exposure, and freeze-
Sampling 4.1
thaw resistance.
Sample Size 4.2
Conditioning 4.3
1.2 Deck boards, guards, and handrails covered by this
Flexural Tests 4.4
specification are permitted to be of any code compliant shape
Temperature and Moisture Effects 4.5
and thickness (solid or non-solid). Ultraviolet (UV) Resistance Test 4.6
Freeze-Thaw Resistance Test 4.7
NOTE 2—While WPCs are produced in a broad range of ratios of fiber
Biodeterioration Tests 4.8
to resin it is recognized that the performance requirements in this
Fire Performance Tests 4.9
specification are valid for any material or combination of materials used
Deck Board Performance Requirements 5
as deck boards, guards, or handrails. For products made primarily from
General 5.1
resin, or for products that exhibit highly plastic properties (for example,
Flexural Performance Tests 5.2
more than 3% strain without rupture in a standard flexural test under
Determination of the Unadjusted Allowable 5.3
ambient conditions), users are directed to Specification D6662 for
Load
additional guidance. Creep-Recovery Test 5.4
Mechanical Fastener Holding Tests 5.5
1.3 Adeckboard,andadeckboardusedasastairtread,are
Slip Resistance Test 5.6
assigned a span rating indicating its ability to comply with Guard and Handrail Performance 6
Requirements
model code specified functions identified for its specific end
General 6.1
use. A guard or handrail is recognized for its ability to meet
Guardrail System Test Requirements 6.2
minimumcoderequirementsspecifiedintheappropriatemodel One- and Two-Family Dwelling 6.2.1.1
Requirements
building code.
Handrail Test Requirements (Concentrated 6.3
Load)
Report 7
Independent Inspection 8
1
This specification is under the jurisdiction ofASTM Committee D07 on Wood
Manufacturing Standard 9
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered
Precision and Bias 10
Wood Products.
Keywords 11
Current edition approved Dec. 1, 2014. Published January 2015. Originally
Two-Span Test Method Annex A1
approved in 2004. Last previous edition approved in 2010 as D7032–10A. DOI:
Commentary Appendix X1
10.1520/D7032-14.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032−14
2. Referenced Documents F1679Test Method for Using a Variable Incidence Tribom-
3
2 eter (VIT) (Withdrawn 2006)
2.1 ASTM Standards:
G154Practice for Operating Fluorescent Ultraviolet (UV)
D9Terminology Relating to Wood and Wood-Based Prod-
Lamp Appar
...
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 − 10a D7032 − 14
Standard Specification for
Establishing Performance Ratings for Wood-Plastic
Composite Deck Boards and Guardrail Systems (Guards or
1
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.
1.2 Deck boards, 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 Details of manufacturing processes may be proprietary and 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:
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
Biodeterioration Tests 4.8
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, 2010Dec. 1, 2014. Published December 2010January 2015. Originally approved in 2004. Last previous edition approved in 2010 as
D7032 – 10.D7032 – 10A. DOI: 10.1520/D7032-10A.10.1520/D7032-14.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7032 − 14
Section
Fire Performance Tests 4.9
Deck Board Performance Requirements 5
General 5.1
Flexural Performance Tests 5.2
Determination of the Unadjusted Allowable 5.3
Load
Creep-Recovery Test 5.4
Mechanical Fastener Holding Tests 5.5
Slip Resistance Test 5.6
Guard and Handrail Performance 6
Requirements
General 6.1
Guardrail System Test Requirements 6.2
One- and Two-Family Dwelling 6.2.1.1
Requirements
Handrail Test Requirements (Concentrated 6.3
Loa
...
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