ASTM D3200-1974(2005) Standard Specification and Test Method for Establishing Recommended Design Stresses for Round Timber Construction Poles《确定圆木电杆推荐应力的设计规范和方法》.pdf

1、Designation: D 3200 74 (Reapproved 2005)Standard Specification and Test Method forEstablishing Recommended Design Stresses for RoundTimber Construction Poles1This standard is issued under the fixed designation D 3200; the number immediately following the designation indicates the year oforiginal ado

2、ption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the physical characteristics ofround timber

3、construction 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 conc

4、erns, 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:D25 Specification for Round Timber Piles

5、2D 2899 Method for Establishing Design Stresses for RoundTimber Piles23. 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 D 2899.6. 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 D 07.04 on Poleand Pile

8、Products.Current edition approved Oct. 1, 2005. Published October 2005. Originallyapproved in 1974. Last previous edition approved in 2000 as D 3200 74 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of

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14、 the ASTM website(www.astm.org).TABLE 1 Specified Tip Circumference With Corresponding Minimum Butt CircumferenceTip circumference,required min, in. (mm)16 (406) 19 (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 (3

15、048) 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 (731.5) 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

16、.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) 23.5 (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)D 3200 74 (2005)2