ASTM D6570-04

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Designation:D6570–04
Standard Practice for
Assigning Allowable Properties for Mechanically Graded
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Lumber
This standard is issued under the fixed designation D 6570; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 4761 Test Methods for Mechanical Properties of Lumber
and Wood-Based Structural Material
1.1 This practice covers the methodology of grade qualifi-
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2.2 ANSI Standards:
cation, assignment of design properties, and requirements for
ANSI/AITCA190.1 American National Standard for Wood
the quality control of mechanically graded solid sawn lumber.
Products—Structural Glued Laminated Timber
1.2 This practice acknowledges alternative methods for the
ANSI/AF&PA NDS National Design Specification for
assignment of specific properties. These methods are assign-
Wood Construction
ment by test, relationship to other properties, and by proce-
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2.3 Canadian Standards Association Standard:
dures in other appropriate standards.
CSA O141 Softwood Lumber
2. Referenced Documents 2.4 National Institute of Standards and Technology Stan-
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dard:
2.1 ASTM Standards:
Voluntary Product Standard PS 20 American Softwood
D9 Terminology Relating to Wood
Lumber Standard
D 143 Test Methods for Small Clear Specimens of Timber
D 198 Test Methods of Static Tests of Lumber in Structural
3. Terminology
Sizes
3.1 Definitions—For definitions of terms related to wood,
D 245 Practice for Establishing Structural Grades and Re-
refer to TerminologyD9.
lated Allowable Properties for Visually Graded Lumber
3.2 Definitions of Terms Specific to This Standard:
D 1165 Nomenclature of Domestic Hardwoods and Soft-
3.2.1 mechanical evaluation, n—identification and ap-
woods
praisal of one or more physical or mechanical lumber charac-
D 1990 Practice for Establishing Allowable Properties for
teristics as part of the lumber segregation process.
Visually Graded Dimension Lumber from In-Grade Tests
3.2.2 mechanically graded lumber, n—solid sawn lumber
of Full-Size Specimens
graded by mechanical evaluation. Visual evaluation also may
D 2395 Test Methods for Specific Gravity of Wood and
be required. The material has assigned design properties and is
Wood-Based Materials
manufactured for use as structural members.
D 2555 Test Methods for Establishing Clear Wood Strength
3.2.3 qualified agency, n—an organization, hereafter re-
Values
ferred to as the agency, that has trained personnel and proce-
D 2915 Practice for Evaluating Allowable Properties for
dures to ensure the system evaluations and grades comply with
Grades of Structural Lumber
all applicable requirements of this practice.
D 3737 Practice for Establishing Allowable Properties for
3.2.3.1 Discussion—The agency shall have no financial
Structural Glued Laminated Timber (Glulam)
interest in, nor shall be financially dependent upon, any single
D 4442 TestMethodsforDirectMoistureContentMeasure-
company manufacturing the product being inspected or tested;
ment of Wood and Wood-Based Materials
and shall not be owned, operated, or controlled by any such
D 4444 TestMethodsforUseandCalibrationofHand-Held
company.
Moisture Meters
3.2.3.2 Discussion—The agency shall conform with the
provisions for agency accreditation under the appropriate
consensus standard.
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This practice is under the jurisdiction ofASTM Committee D07 on Wood and
is the direct responsibility of Subcommittee D07.02 on Lumber and Engineered
Wood Products.
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Current edition approved Dec. 1, 2004. Published December 2004. Originally Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
approved in 2000. Last previous edition approved in 2000 as D 6570 - 00a. 4th Floor, New York, NY 10036.
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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 3460, Gaithersburg, MD 20899-3460.
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Standards volume information, refer to the standard’s Document Summary page on Available from Canadian Standards Association (CSA), 178 Rexdale Blvd.,
the ASTM website. Toronto, ON Canada M9W1R3.
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D6570–04
3.2.4 visual evaluation, n—identification and appraisal of 6.3.1 When mechanical and physical properties in Section 7
lumber growth and manufacturing characteristics by visual are determined by tests, the appropriateASTM standards shall
means as part of the lumber segregation
...