ASTM D6570-04e1
(Practice)Standard Practice for Assigning Allowable Properties for Mechanically Graded Lumber
Standard Practice for Assigning Allowable Properties for Mechanically Graded Lumber
SIGNIFICANCE AND USE
The procedures described in this practice are intended to be used to establish appropriate allowable unit stresses, moduli of elasticity, and specific gravity for mechanically graded solid sawn lumber. An on-going quality control program to monitor compliance with the assigned grade properties is required.
SCOPE
1.1 This practice covers the methodology of grade qualification, assignment of design properties, and requirements for the quality control of mechanically graded solid sawn lumber.
1.2 This practice acknowledges alternative methods for the assignment of specific properties. These methods are assignment by test, relationship to other properties, and by procedures in other appropriate standards.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
´1
Designation:D6570–04
Standard Practice for
Assigning Allowable Properties for Mechanically Graded
1
Lumber
This standard is issued under the fixed designation D6570; 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
´ NOTE—Updated Reference 1 in March 2007.
1. Scope D4442 Test Methods for Direct Moisture Content Measure-
ment of Wood and Wood-Base Materials
1.1 This practice covers the methodology of grade qualifi-
D4444 Test Method for Laboratory Standardization and
cation, assignment of design properties, and requirements for
Calibration of Hand-Held Moisture Meters
the quality control of mechanically graded solid sawn lumber.
D4761 Test Methods for Mechanical Properties of Lumber
1.2 This practice acknowledges alternative methods for the
and Wood-Base Structural Material
assignment of specific properties. These methods are assign-
3
2.2 ANSI Standards:
ment by test, relationship to other properties, and by proce-
ANSI/AITCA190.1 American National Standard for Wood
dures in other appropriate standards.
Products—Structural Glued Laminated Timber
2. Referenced Documents ANSI/AF&PA NDS National Design Specification for
2
Wood Construction
2.1 ASTM Standards:
4
2.3 Canadian Standards Association Standard:
D9 Terminology Relating to Wood and Wood-Based Prod-
CSA O141 Softwood Lumber
ucts
2.4 National Institute of Standards and Technology Stan-
D143 Test Methods for Small Clear Specimens of Timber
5
dard:
D198 Test Methods of Static Tests of Lumber in Structural
Voluntary Product Standard PS 20 American Softwood
Sizes
Lumber Standard
D245 Practice for Establishing Structural Grades and Re-
lated Allowable Properties for Visually Graded Lumber
3. Terminology
D1165 Nomenclature of Commercial Hardwoods and Soft-
3.1 Definitions—For definitions of terms related to wood,
woods
refer to Terminology D9.
D1990 Practice for Establishing Allowable Properties for
3.2 Definitions of Terms Specific to This Standard:
Visually-Graded Dimension Lumber from In-Grade Tests
3.2.1 mechanical evaluation, n—identification and ap-
of Full-Size Specimens
praisal of one or more physical or mechanical lumber charac-
D2395 Test Methods for Specific Gravity of Wood and
teristics as part of the lumber segregation process.
Wood-Based Materials
3.2.2 mechanically graded lumber, n—solid sawn lumber
D2555 Practice for Establishing Clear Wood Strength Val-
graded by mechanical evaluation. Visual evaluation also may
ues
be required. The material has assigned design properties and is
D2915 Practice for Evaluating Allowable Properties for
manufactured for use as structural members.
Grades of Structural Lumber
3.2.3 qualified agency, n—an organization, hereafter re-
D3737 Practice for Establishing Allowable Properties for
ferred to as the agency, that has trained personnel and proce-
Structural Glued Laminated Timber (Glulam)
dures to ensure the system evaluations and grades comply with
all applicable requirements of this practice.
3.2.3.1 Discussion—The agency shall have no financial
1
This practice is under the jurisdiction ofASTM Committee D07 on Wood and
interest in, nor shall be financially dependent upon, any single
is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered
Wood Products.
Current edition approved Dec. 1, 2004. Published December 2004. Originally
3
approved in 2000. Last previous edition approved in 2000 as D6570 - 00a. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/D6570-04E01. 4th Floor, New York, NY 10036, http://www.ansi.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from National Institute of Standards and Technology (NIST), 100
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
5
Standards volume information, refer to the standard’s Document Summary page on Available from Canadian Standards Association (CSA), 5060 Spectrum Way,
the ASTM website. Mississauga, ON L4W 5N6, Canada, http://www.csa.ca.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
´1
D6570–04
company manufacturing the product being inspected or tested; 6.2.5 When the allowable shear stress parallel to grain (Fv)
and shall not be owned, operated, or controlled by any such or the allowable compressive stress perpendicular to grain
company. (Fc') are determined in accordance with 7.3.4 and 7.3.5,
3.2.3.2 Discussion—The agency shall conf
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.