1、Designation: D3200 74 (Reapproved 2012)Standard Specification and Test Method forEstablishing Recommended Design Stresses for RoundTimber Construction Poles1This standard is issued under the fixed designation D3200; the number immediately following the designation indicates the year oforiginal adopt
2、ion or, in the case of revision, the year of last revision. 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 the physical characteristics ofround timber con
3、struction poles to be used either treated oruntreated.1.2 This test method covers basic principles for establishingrecommended design stress values for round timber construc-tion poles that are applicable to the quality described.1.3 This standard does not purport to address all of thesafety concern
4、s, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D25 Specification for Round Timber PilesD2
5、899 Practice for Establishing Allowable Stresses forRound Timber Piles3. Terminology Definition3.1 construction polesthose poles which are used asprinciple load-carrying components of a building.4. Physical Requirements4.1 The round timber construction poles shall be as speci-fied in Specification D
6、25, with the following exception:4.1.1 In place of 7.1 of Specification D25, the followingshall apply:The tip circumference shall be specified. The correspondingbutt circumference shall not be less than that specified in Table1 of this standard.5. Design Stresses5.1 Methods for establishing design s
7、tresses for roundtimber construction poles shall follow those presented inMethod D2899.6. Keywords6.1 design; poles; stresses; timber1This specification and test method is under the jurisdiction of ASTM Commit-tee D07 on Wood and is the direct responsibility of Subcommittee D07.04 on Poleand Pile Pr
8、oducts.Current edition approved April 1, 2012. Published April 2012. Originallyapproved in 1974. Last previous edition approved in 2005 as D3200 74 (2005).DOI: 10.1520/D3200-74R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org
9、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of an
10、y 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 the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to rev
11、ision 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 of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your
12、 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 shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyr
13、ighted 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 obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org
14、 (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Specified Tip Circumference With Corresponding Minimum Butt CircumferenceTip circumference,required min, in. (mm)16 (406) 19 (
15、483) 22 (559) 25 (635) 28 (711) 31 (787) 35 (889) 38 (965)Length, ft (mm) Minimum Circumference 3 ft (914 mm) from Butt, in. (mm)10 (3048) 18.5 (469.9) 21.5 (546.1) 24.5 (622.3) 27.5 (698.5) 30.5 (774.7) 33.5 (850.9) 37.5 (952.5) 40.5 (1028.7)15 (4572) 19.8 (502.9) 22.8 (579.1) 25.8 (655.3) 28.8 (73
16、1.5) 31.8 (807.7) 34.8 (883.9) 38.8 (985.5) 41.8 (1061.7)20 (6096) 22.0 (533.4) 24.0 (609.6) 27.0 (685.8) 30.0 (762.0) 33.0 (838.2) 36.0 (914.4) 40.0 (1016.0) 43.0 (1092.2)25 (7620) 22.2 (563.9) 25.2 (640.1) 28.2 (716.3) 31.2 (792.5) 34.2 (868.7) 37.2 (944.9) 41.2 (1046.5) 44.2 (1122.7)30 (9144) 23.
17、5 (596.9) 26.5 (673.1) 29.5 (749.3) 32.5 (825.5) 35.5 (901.7) 38.5 (977.9) 42.5 (1079.5) 45.5 (1155.7)35 (10668) 24.8 (629.9) 27.8 (706.1) 30.8 (782.3) 33.8 (858.5) 36.8 (934.7) 39.8 (1010.9) 43.8 (1112.5) 46.8 (1188.7)40 (12192) 26.0 (660.4) 29.0 (736.6) 32.0 (812.8) 35.0 (889.0) 38.0 (965.2) 41.0 (1041.4) 45.0 (1143.0) 48.0 (1219.2)D3200 74 (2012)2
