ASTM D8023-2017 4375 Standard Specification for Round Wood Dowels (Pegs) for Use in Wood Construction《木材建造用圆木销钉(钉)》.pdf

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1、Designation: D8023 17Standard Specification forRound Wood Dowels (Pegs) for Use in Wood Construction1This standard is issued under the fixed designation D8023; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisi

2、on. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers standardizing the dimensionsand materials for the manufacture of round wood dowels (pegs)used in the fa

3、brication of connections in wood construction.The referencing of this specification in design, construction,and purchase order documents is intended to provide someassurance that the round wood dowels to be used in anassembly meet minimum materials quality standards and thatdimensions for fabricatio

4、n and finish can be relied on to ensureconnection performance. This specification provides regulatoryagencies with a set of standards by which to judge theacceptability of round wood dowels encountered in the fieldand in fabricators shops.1.2 This specification only addresses the standardizationand

5、manufacture of round wood dowels. Other types of wooddowels, such as sawn or cleaved pegs, are outside the scope ofthis specification.1.3 The values stated in inch-pound units are to be regardedas standard. The values in parentheses are for information only.1.4 Safety HazardsThere are no known hazar

6、ds with theuse of this specification. The products manufactured to thisspecification should not be brittle or difficult to install withproper tools.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision

7、on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D9 Terminology Relating to Wood and Wood-Based Prod-uctsD2395 Test Methods for Density

8、 and Specific Gravity (Rela-tive Density) of Wood and Wood-Based MaterialsE176 Terminology of Fire Standards2.2 Other Standards:3NDS National Design Specification for Wood Construction3. Terminology3.1 DefinitionsDefinitions used in this practice are inaccordance with Terminology D9 and Terminology

9、E176,unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 round wood dowela cylindrical turned wood dowel.3.2.1.1 DiscussionWood dowels may be chamfered (orrounded) at either or both ends, to facilitate installation andgive a more finished appearance when left protrudi

10、ng from theconnected timber member surfaces.3.2.2 wood dowel (peg)A cylindrical, turned, sawn, orcleaved load-transfer device, intended to transfer shear acrossplanes between wood structural members that have been drilledwith holes to accept the wood dowels (pegs).4. Classification4.1 This specifica

11、tion covers round wood dowels in diam-eters from12 in. (12.5 mm) to 2 in. (51 mm). The use of thesewood dowels is covered in wood design standards.5. Materials and Manufacture5.1 General:5.1.1 Wood dowels shall be fabricated to ensure that thewood fibers are aligned with the longitudinal axis of the

12、 dowel.5.1.2 Wood dowels shall be fabricated from any species ofwood that has an oven dry specific gravity of at least 0.57,determined in accordance with Test Method D2395. Wooddowels provided under a species designation shall be fabricatedfrom material that has a minimum oven dry specific gravity o

13、fnot less than 98% of the NDS specific gravity value for thatspecies designation.5.1.3 Wood dowels shall be fabricated from wood that hasbeen air-dried or kiln-dried to approximately constant weightbefore fabrication.1This test method is under the jurisdiction of ASTM Committee D07 on Woodand is the

14、 direct responsibility of Subcommittee D07.05 on Wood Assemblies.Current edition approved Oct. 1, 2017. Published October 2017. DOI: 10.1520/D8023-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStand

15、ards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from theAmerican Wood Council, 222 Catoctin Circle SE, Suite 201,Leesburg, VA 20175.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThi

16、s international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (T

17、BT) Committee.15.1.4 Wood dowels shall be protected with a treatment ofparaffin wax, or similar sealing substance capable of inhibitingthe absorption of moisture from the atmosphere.5.2 Quality of Dowel:5.2.1 Wood dowels shall be fabricated from clear, straight-grained timber free from any form of d

18、ecay.5.2.2 Slope of grain resulting from either diagonal sawingor from spiral or twisted grain in the tree is measured by theangle between the direction of the fibers and the longitudinalaxis of the dowel. Slope of grain shall not exceed 1 in 20.NOTE 1A slope of grain of 1 in 20 means that the grain

19、 deviates 1 in.(25.4 mm) in 20 in. (508 mm) of length or12 in. (12.7 mm) in 10 in.(254 mm).5.2.2.1 When both diagonal grain and spiral grain arepresent, the combined slope of grain is taken as the effectiveslope.5.2.2.2 Local deviations shall be evaluated.5.2.3 Knots or deviated grain associated wit

20、h knots shall notbe permitted in the dowel.5.2.4 Shakes, checks, and splits shall not be permitted in thedowel.5.3 Turned Wood Dowel Tolerances:5.3.1 Diameters and lengths indicated in Fig. 1 shall beactual, not nominal.5.3.2 Diameters shall not be more than 2% oversize, nor lessthan 1% undersize.5.

21、3.3 Diameters shall not vary, along a wood dowel length(other than deliberate chamfer) more than 1%.5.3.4 The ratio of any two diametrical dowel dimensionsshall be within 0.98 and 1.02, when measured at the specifiedfabrication moisture content.6. Keywords6.1 connections; connectors; structural timb

22、er; timberjoints; wood; wood constructionASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and th

23、e riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision o

24、f this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should

25、make your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtaine

26、d by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Round Wood DowelD8023 172