Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite Deck Boards and Guardrail Systems (Guards or Handrails)

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).
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 1—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 D 6662 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 UnitsThe values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only.
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.

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ASTM D7032-05 - Standard Specification for Establishing Performance Ratings for Wood-Plastic Composite Deck Boards and Guardrail Systems (Guards or Handrails)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D 7032 – 05
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory requirements prior to use.
1.1 This specification covers the procedures to establish a
1.7 Table of Contents:
performance rating for wood-plastic composite (WPC) deck
Section
boards. This specification also defines the procedures to
Scope 1
establish a performance rating for WPC guards and handrails.
Referenced Documents 2
The purpose of this specification is to establish the basis for
Terminology 3
General Requirements 4
code recognition of these products or systems in exterior
Sampling 4.1
applications where combustible construction is allowed (see
Sample Size 4.2
X1.1). Conditioning 4.3
Flexural Tests 4.4
1.2 Deck boards, guards, and handrails covered by this
Temperature and Moisture Effects 4.5
specification are permitted to be of any code compliant shape
Ultraviolet (UV) Resistance Test 4.6
and thickness (solid or non-solid).
Freeze-Thaw Resistance Test 4.7
Biodeterioration Tests 4.8
NOTE 1—While WPCs are produced in a broad range of ratios of fiber
Fire Performance Tests 4.9
Deck Board Performance Requirements 5
to resin it is recognized that the performance requirements in this
General 5.1
specification are valid for any material or combination of materials used
Flexural Performance Tests 5.2
as deck boards, guards, or handrails. For products made primarily from
Determination of the Unadjusted Allowable Load 5.3
resin, or for products that exhibit highly plastic properties (for example,
Creep-Recovery Test 5.4
more than 3% strain without rupture in a standard flexural test under
Mechanical Fastener Holding Tests 5.5
ambient conditions), users are directed to Specification D6662 for
Slip Resistance Test 5.6
additional guidance. Guard and Handrail Performance Requirements 6
General 6.1
1.3 Adeckboard,andadeckboardusedasastairtread,are
Guardrail System Test Requirements 6.2
One- and Two-Family Dwelling Requirements 6.2.1.1
assigned a span rating indicating its ability to comply with
Handrail Test Requirements (Concentrated Load) 6.3
model code specified functions identified for its specific end
Report 7
use. A guard or handrail is recognized for its ability to meet
Independent Inspection 8
Manufacturing Standard 9
minimumcoderequirementsspecifiedintheappropriatemodel
Precision and Bias 10
building code.
Keywords 11
1.4 Details of manufacturing processes may be proprietary
Two-Span Test Method Annex A1
Fire Propagation Test Methods Annex A2
and are beyond the scope of this specification.
Commentary Appendix X1
1.5 Units—The values stated in inch-pound units are to be
regarded as standard. The values given in parentheses are
2. Referenced Documents
mathematical conversions to SI units, which are provided for
2
2.1 ASTM Standards:
information only.
D9 Terminology Relating to Wood
1.6 This standard does not purport to address all of the
D790 TestMethodsforFlexuralPropertiesofUnreinforced
safety concerns, if any, associated with its use. It is the
andReinforcedPlasticsandElectricalInsulationMaterials
responsibility of the user of this standard to establish appro-
D883 Terminology Relating to Plastics
1
This specification is under the jurisdiction ofASTM Committee D07 on Wood
2
andisthedirectresponsibilityofSubcommitteeD07.02onLumberandEngineered For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Wood Products. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved May 1, 2005. Published May 2005. Originally Standards volume information, refer to the standard’s Document Summary page on
published in 2004. Last previous edition published in 2004 as D7032-04. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D7032–05
D1037 Test Methods for Evaluating Properties of Wood- 3. Terminology
Base Fiber and Particle Panel Materials
3.1 Definitions—Terminology used to describe WPCs are
D1413 Test Method for Wood Preservatives by Laboratory
defined in Terminologies D9, D883, D1554, and D4092,
Soil-Block Cultures
Practice D1972, and Classification D4000.
D1554 Terminology Relating to Wood-Base Fiber and
3.2 Definitions of Terms Specific to This Standard:
Particle Panel
...

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