ASTM E72-2014a red 2907 Standard Test Methods of Conducting Strength Tests of Panels for Building Construction《建筑结构用板条的传导强度试验的标准试验方法》.pdf
《ASTM E72-2014a red 2907 Standard Test Methods of Conducting Strength Tests of Panels for Building Construction《建筑结构用板条的传导强度试验的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM E72-2014a red 2907 Standard Test Methods of Conducting Strength Tests of Panels for Building Construction《建筑结构用板条的传导强度试验的标准试验方法》.pdf(15页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E72 14E72 14aStandard Test Methods ofConducting Strength Tests of Panels for BuildingConstruction1This standard is issued under the fixed designation E72; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of las
2、t revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.INTRODUCTIONSound engineering design of structures
3、using existing or new materials requires accurate technicaldata on the strength and rigidity of the basic elements employed in various construction systems. It isthe purpose of these test methods to provide a systematic basis for obtaining engineering data onvarious construction elements and structu
4、ral details of value to designers, builders, building officials,and others interested in this field. The results should closely approximate the performance in actualservice.1. Scope1.1 These test methods cover the following procedures for determining the structural properties of segments of wall, fl
5、oor, androof constructions:SectionTest Specimens 3Loading 4Deformation Measurements 5Reports 6Precision and Accuracy 7TESTING WALLSSignificance and Use 8Compressive Load 9Tensile Load 10Transverse LoadSpecimen Horizontal 11Transverse LoadSpecimen Vertical 12Concentrated Load 13Impact LoadSee Test Me
6、thods E695 and E661Racking LoadEvaluation of Sheathing Materialson a Standard Wood Frame14Racking LoadEvaluation of Sheathing Materials (Wet)on a Standard Wood Frame15TESTING FLOORSSignificance and Use 16Transverse Load 17Concentrated Load 18Impact LoadSee Test Methods E695 and E661TESTING ROOFSSect
7、ionSignificance and Use 19Transverse Load 20Concentrated Load 21APPENDIXTechnical Interpretation Appendix X11.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are
8、 not considered standard.1 These test methods are under the jurisdiction of ASTM Committee E06 on Performance of Buildings and are the direct responsibility of Subcommittee E06.11 onHorizontal and Vertical Structures/Structural Performance of Completed Structures.Current edition approved June 1, 201
9、4July 1, 2014. Published August 2014. Originally approved in 1947. Last previous edition approved in 20132014 asE72 13a.E72 14. DOI: 10.1520/E0072-14.10.1520/E0072-14A.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes hav
10、e been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official doc
11、ument.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States11.2.1 ExceptionSI units are used in Fig. 6.2. Referenced Documents2.1 ASTM Standards:2D2395 Test Methods for Density and Specific Gravity (Relative Density) of Wood and Wood-Based
12、MaterialsD4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base MaterialsD7438 Practice for Field Calibration and Application of Hand-Held Moisture MetersE4 Practices for Force Verification of Testing MachinesE73 Practice for Static Load Testing of Truss AssembliesE564 Prac
13、tice for Static Load Test for Shear Resistance of Framed Walls for BuildingsE575 Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and AssembliesE661 Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Stati
14、c and ImpactLoadsE695 Test Method of Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact LoadingE2126 Test Methods for Cyclic (Reversed) Load Test for Shear Resistance of Vertical Elements of the Lateral Force ResistingSystems for BuildingsE2309/E2309M Practices for Verific
15、ation of Displacement Measuring Systems and Devices Used in Material Testing MachinesE2322 Test Method for Conducting Transverse and Concentrated Load Tests on Panels used in Floor and Roof Construction2.2 Other Document:3NIST Voluntary Product Standard PS20 American Softwood Lumber Standard3. Test
16、Specimens3.1 SizeThere shall be at least three specimens for each test. Specimens shall be constructed to represent sections of the wall,floor, or roof assembly. The specimens shall be representative as to material and workmanship and shall be of the largest practicalsize to predict structural perfo
17、rmance attributes of the assembly. Unsymmetrical assemblies shall be tested in each axis for whichthe results may be different.3.2 Length or HeightThe length or height of specimen for each element shall be chosen to conform to the length or heightof that element in actual use.3.3 WidthThe width of s
18、pecimen shall be chosen, insofar as possible, to include several of the principal load-carryingmembers to ensure that the behavior under load will simulate that under service conditions. With the exception of specimens forthe racking load test, the nominal width of wall specimens shall be 4 ft (1.2
19、m). The actual width of specimens shall be a wholenumber multiplied by the spacing of the principal load-carrying members except for prefabricated panels, for which the actualwidth shall be the width of panel used. If the structural properties of a particular construction are to be compared with ano
20、therconstruction, there should not be a great difference in the actual widths of the specimens.3.4 AgeConstructions, such as concrete and masonry (brick, structural clay tile, concrete block) for which the structuralproperties depend upon the age of the specimen, shall be tested not less than 25 day
21、s nor more than 31 days after fabrication. Thisage requirement applies also to plastered and stuccoed constructions.4. Loading4.1 ApparatusThe testing machine or load-measuring apparatus shall comply with the requirements prescribed in PracticesE4.4.2 Application of LoadApply the load to all of the
22、specimens in any test in increments so chosen that a sufficient numberof readings will be obtained to determine definitely the load-deformation curve (see Section 6). Record the initial reading of theload and the reading of the deformation, either with no load on the specimen or under a small initia
23、l load. Increase the load to thefirst increment and record the deformation. Unless otherwise specified, decrease the load to the initial load and record the set(sometimes designated “permanent set”). Increase the load to two increments and record the set, when it is released to the initialload. Foll
24、ow this sequence of readings for three increments, four increments, and so forth, of load. When for each specimen thebehavior of the specimen under load indicates that the specimen might fail suddenly and damage the deformation-measuringapparatus, remove this apparatus from the specimen and increase
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