ImageVerifierCode 换一换
格式:PDF , 页数:33 ,大小:647.51KB ,
资源ID:174845      下载积分:9 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/174845.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_D_5456_-_14b.pdf)为本站会员(益****师)主动上传,蜗牛文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_D_5456_-_14b.pdf

1、Designation:D545614bStandard Specification forEvaluation of Structural Composite Lumber Products1This standard is issued under the fixed designation D5456;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A nu

2、mber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONStructural composite lumber is intended for use as an engineering material for a variety of end-useapplications.The composition of the lumbe

3、r varies by wood species,adhesive composition,woodelement size,shape,and arrangement.To provide the intended performance,composite lumberproducts require:(1)an evaluation of the mechanical and physical properties and their response toend-use environments,and(2)establishment of and conformance to sta

4、ndard performance specifica-tions for quality.Procedures contained in this specification are also to be used for establishing the design propertiesand for checking the effectiveness of property assignment and quality assurance procedures.The quality assurance sections in this specification are inten

5、ded to serve as a basis for designingquality-control programs specific to each product.The objective is to ensure that design valuesestablished in the qualification process are maintained.This specification is arranged as follows:SectionQualification6Determination of Allowable DesignStresses7Indepen

6、dent Inspection8Quality Assurance101.Scope1.1 This specification recognizes the complexity of struc-tural glued products.Consequently,this specification coversboth specific procedures and statements of intent that samplingand analysis must relate to the specific product.1.2 This specification was de

7、veloped in the light of cur-rently manufactured products as defined in 3.2.Materials thatdo not conform to the definitions are beyond the scope of thisspecification.A brief discussion is found in Appendix X2.1.3 Details of manufacturing procedures are beyond thescope of this specification.NOTE1There

8、 is some potential for manufacturing variables to affectthe properties of members that are loaded for sustained periods of time.Users of this specification are advised to consider the commentary on thistopic in Appendix X2.1.4 This specification primarily considers end use in dryservice conditions,s

9、uch as with most protected framingmembers,where the average equilibrium moisture content forsolid-sawn lumber is less than 16%.The conditioning envi-ronment of 6.3 is considered representative of such uses.1.5 The performance of structural composite lumber isaffected by wood species,wood element siz

10、e and shape,andadhesive and production parameters.Therefore,products pro-duced by each individual manufacturer shall be evaluated todetermine their product properties,regardless of the similarityin characteristics to products produced by other manufacturers.Where a manufacturer produces product in m

11、ore than onefacility,each production facility shall be evaluated indepen-dently.For additional production facilities,any revisions to thefull qualification program in accordance with this specificationshall be approved by the independent qualifying agency.1.6 This specification is intended to provid

12、e manufacturers,regulatory agencies,and end users with a means to evaluate acomposite lumber product intended for use as a structuralmaterial.1.7 This specification covers initial qualification sampling,mechanical and physical tests,analysis,and design value1This specification is under the jurisdict

13、ion of ASTM Committee D07 on Woodand is the direct responsibility of Subcommittee D07.02 on Lumber and EngineeredWood Products.Current edition approved Oct.1,2014.Published December 2014.Originallyapproved in 1993.Last previous edition approved in 2014 as D5456 14a.DOI:10.1520/D5456-14B.Copyright AS

14、TM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 assignments.Requirements for a quality-control program andcumulative evaluations are included to ensure maintenance ofallowable design values for the product.1.8 This specification,or parts thereof,shal

15、l be applicable tostructural composite lumber portions of manufactured struc-tural components.1.9 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered s

16、tandard.1.10 This standard does not purport to address all of thesafety concerns,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:2C177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC384 Test Method for Impedance

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2