ASTM E661-2003(2015)e1 2259 Standard Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads 《在集中静载荷和冲击载荷下木制及木基楼板和屋顶覆.pdf
《ASTM E661-2003(2015)e1 2259 Standard Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads 《在集中静载荷和冲击载荷下木制及木基楼板和屋顶覆.pdf》由会员分享,可在线阅读,更多相关《ASTM E661-2003(2015)e1 2259 Standard Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads 《在集中静载荷和冲击载荷下木制及木基楼板和屋顶覆.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E661 03 (Reapproved 2015)1Standard Test Method forPerformance of Wood and Wood-Based Floor and RoofSheathing Under Concentrated Static and Impact Loads1This standard is issued under the fixed designation E661; the number immediately following the designation indicates the year oforigina
2、l adoption 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.1NOTEUnits information was editorially corrected in March 2015.INTRODUCTIONDur
3、ing construction and occupancy of a building, floor and roof sheathing are subjected toconcentrated loads that frequently govern the thickness required. Static loads may simulate either foottraffic, or loads from fixtures, when applied through loading disks of appropriate size. Impact loadswill occu
4、r during construction and also in service.Roof sheathing and subflooring are likely to be critical in strength or stiffness, or both, under foottraffic and construction loads, while single-layer floors are generally critical under fixture loads, foottraffic, and in-service impact loads. Subfloors, l
5、ike single floors, must also support fixture loads, butthey will have an additional layer of material, such as underlayment above, which will help todistribute concentrated loads.1. Scope1.1 This test method covers procedures for determining theresistance to deflection and damage of floor and roof s
6、heathingused in site-built construction subjected to concentrated staticloads as well as impact loads from nonrigid blunt objects. It isapplicable to wood and wood-based panels and boards, but isnot intended to cover profiled metal decks, nor precast orcast-in-place slabs. Surface indentation is not
7、 evaluated sepa-rately from deflection.1.2 Three applications are covered: roof sheathing,subfloors, and single floors. Roof sheathing is tested in both adry and a wet condition, while subfloors and single floors areboth tested in a dry condition, as well as a condition of havingdried out after bein
8、g wet. These moisture conditions are thosecommonly experienced with site-built construction.NOTE 1Where it is anticipated that sheathing will be subjected only todry conditions during construction and use, or else to greater moistureexposure than is indicated in 7.3.2, the corresponding exposure con
9、ditionsmay be modified by agreement between the interested parties. Forexample, shop-built construction may be tested dry only, although thepossibility of exposure to high humidity or leaks and flooding during useshould be considered.1.3 The values stated in inch-pound units are to be regardedas sta
10、ndard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 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 s
11、tandard 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:2D1517 Terminology Relating to LeatherE575 Practice for Reporting Data from Structural Tests ofBuilding Constructions, Eleme
12、nts, Connections, and As-sembliesE631 Terminology of Building Constructions2.2 Other Standards:Fed. Spec. V-T-291E(1) Linen Thread33. Terminology3.1 See Terminology E631 for terms related to this standard.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings an
13、d is the direct responsibility of Subcommittee E06.11on Horizontal and Vertical Structures/Structural Performance of Completed Struc-tures.Current edition approved March 1, 2015. Published March 2015. Originallyapproved in 1978. Last previous edition approved in 2009 as E661 03 (2009).DOI: 10.1520/E
14、0661-03R15E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from DLA Document Services, Building
15、 4/D, 700 Robbins Avenue,Philadelphia, PA 19111-5094, http:/quicksearch.dla.milCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Summary of Test Method4.1 Roof and floor sheathing specimens are subjected toconcentrated loads applied
16、through a 3-in. (76-mm) or a 1-in.(25-mm) diameter loading disk, depending on the intended useand the properties to be evaluated. They are also subjected tothe impact of a shot-filled drop bag. Specimens are tested in ahorizontal position, mounted on fully supported framing mem-bers and with loads a
17、pplied to the top surface near an edge, orat a location determined to be more vulnerable. Any supportframing may be used that is representative of the anticipatedservice, as the framing is not considered a major test variable.5. Significance and Use5.1 The procedures outlined will provide data that
18、can beused to evaluate the structural performance, under concentratedloads, of roof and floor sheathing, separate from the effects ofthe framing, under simulated conditions representative of thosein actual service.5.2 The procedures are intended to be applied to roof orfloor sheathing materials inst
19、alled directly to framing. They arenot intended for the evaluation of the framed assembly as awhole.6. Apparatus6.1 Concentrated LoadThe apparatus for the concentratedload test shall conform to the following requirements (see Fig.1):6.1.1 SupportsThe framing members shall be supported inorder not to
20、 deflect under the applied loads. The support systemshall include provisions for rigidly restraining the ends of theframing members, as with blocking and clamps, to preventrotation or vertical movement during testing.6.1.2 Loading DeviceAny convenient means may be usedfor applying a compressive load
21、 up to ultimate, and formeasuring the load within 61 % accuracy. Load shall beapplied through a ball-and-socket joint to assure even applica-tion.6.1.3 Loading DisksTwo steel disks are required, onehaving a diameter of 1 in. (25 mm), representing a concentratedload, and one of 3 in. (76 mm) represen
22、ting foot traffic, eachwith a thickness of at least 0.50 in. (13 mm). The edge of theloading disk contacting the test specimen shall be rounded to aradius not exceeding 0.06 in. (1.5 mm).6.1.4 Deflection Gage, mounted on a rigid tripod whose legsrest on the sheathing immediately above the framing me
23、mbersFIG. 1 Concentrated Static Load ApparatusE661 03 (2015)12that are adjacent to the load point (Fig. 1). The deflection gageshould have a range exceeding the maximum anticipateddeflection, have a maximum error of 61 %, and be graduatedto 0.001 in. (0.02 mm).6.2 Impact LoadThe apparatus for the im
24、pact load testshall conform to the requirements of 6.1.1 6.1.4. In addition,the following equipment shall be used:6.2.1 Drop BagThe bag shall be constructed as in 6.2.1.1 6.2.1.3 (see Fig. 2).6.2.1.1 LeatherThe leather used in construction of the bagshall be harness leather (oak tanned from packer h
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