1、Designation: E 1289 08Standard Specification forReference Specimen for Sound Transmission Loss1This standard is issued under the fixed designation E 1289; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 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 describes the construction and instal-lation of standard reference specimens for quality control oflaboratory soun
3、d transmission loss measurements using TestMethod E90.1.2 Laboratories may choose to construct and test all of thereference specimens described here or only a subset. Specificspecimens may be required by a test method or an accreditingagency.1.3 The values stated in SI units are to be regarded as th
4、estandard. The values given in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:2C 634 Terminology Relating to Building and Environmen-tal AcousticsE90 Test Method for Laboratory Measurement of AirborneSound Transmission Loss of Building Partitions and Ele-ments3. Termin
5、ology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology C 634.4. Construction of Reference Specimen4.1 General:4.1.1 The reference specimen is composed of framed steelpanels. The required materials for fabrication and installationare as follows:Galvanized steel shee
6、tswidth, 1220 mm (4 ft); nominal thickness, 0.63 mm(24 gauge). The weight of the sheets shall be 5.1 6 0.7 kg/m2(1.05 6 0.15 lb/ft2).Steel right angles with 25-mm (1-in.) flangesmetal thickness, 3.2 mm (18 in.).Blind rivetsdiameter, 3.2 mm (18 in. ).Duct tape, 50 mm (2 in.) wide.Drywall screws, Type
7、 Wlength, 32 mm (1.25 in.).Bolts #1024 25 mm (1 in.) long with appropriate nuts and washers.Fasteners, to hold wood frame to the perimeter of the test opening.Non-hardening, caulking,Nominal 2 by 4 in. wood framing, approximately 40 by 90 mm.NoteThe quantity and length of each component needed depen
8、ds on the sizeof the laboratory test opening.NoteTo simplify cleaning, the wood framing used to support the steel panelsmay be painted.4.1.2 The weight of each component of the referencespecimen and the assembled specimen shall be measured andkept on record. In addition, the thickness of each of the
9、 steelpanels shall be measured in six locations. (See Appendix X1.)4.2 Assembly:4.2.1 Galvanized SheetsThe length of each galvanizedsheet shall be a few millimetres less than the height of thelaboratory test opening. The total width of all the sheets shallbe a few millimetres less than the width of
10、the laboratory testopening. This may require that one or more sheets be cutlengthwise. The intent is that, when installed, the panels fill thetest opening completely.4.2.2 FrameCut steel right angles to size to form a framefor each sheet; the frame shall have the same outside dimen-sions as the shee
11、ts. Notch and weld the steel angles to form thefour corners of the frame as shown in Fig. 1. Alternatively,miter the angles and weld similarly. Smooth corners afterwelding.4.2.3 PanelsConstruct a panel by riveting steel sheets tothe frames as follows:04.2.3.1 Drill holes at 100 mm (4 in.) on-center
12、around theperimeter of the sheets for the installation of the blind rivets. Toensure proper alignment of the sheets with the frame, it isrecommended to drill a few holes and then install rivets to holdthe sheet in place. Once this is done, the remaining holes maybe drilled and the rivets installed.
13、Position these holes to avoidconflict with the clearance holes described in 4.2.3.2.4.2.3.2 Drill 4 mm (532 inch) diameter holes through thehorizontal members of the frame and sheet as shown in Fig. 2.These are clearance holes for the drywall screws used to attachthe panel to the wood plate (see 5.4
14、). Drill similar holesthrough the vertical members of the panels that will be used toattach the assembled specimen to the vertical wood plates. Thespacing between these holes is not important.4.2.3.3 Drill 6.4 mm (14 in.) diameter holes at 406 mm (16in.) on-center through the vertical flanges of the
15、 steel frame.These are clearance holes for the bolts used to connect the1This specification is under the jurisdiction of ASTM Committee E33 onBuilding and Environmental Acoustics and is the direct responsibility of Subcom-mittee E33.03 on Sound Transmission.Current edition approved Jan. 15, 2008. Pu
16、blished February 2008. Originallyapproved in 1989. Last previous edition approved in 1997 as E 1289 97(2003).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 sta
17、ndards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.panels together (see 5.3 and Fig. 3). The holes in adjacentvertical members should be carefully aligned with each other toease installati
18、on of the panels.5. Installation A: Single Layer Reference Specimen5.1 Using approximately 40 mm by 90 mm wood studs(nominal 2 in. by 4 in.), install a wood frame around theperimeter of the laboratory opening. Use a double bead ofcaulking between the wood frame and the surface of thelaboratory openi
19、ng. Use suitable fasteners no more than 305mm (12 in.) on-center.5.2 Place the reference specimen against the wood framewith the flanges of the panel frames as shown in Fig. 4.NOTE 1The panels are positioned 75 mm from the mid-plane of thelaboratory test opening to minimize changes when laboratories
20、 intend totest other reference specimens described in this document that use separateplates.NOTE 2The direction of sound transmission for these referencespecimens is not important. It can be left-to-right or right-to-left.5.3 Insert 25-mm (1-in.) long No. 10-24 bolts or equivalentthrough the holes i
21、n adjacent vertical flanges drilled accordingto 4.2.3.3. Washers may be used if desired. Tighten nut snuglyto close the gap between adjacent panels. (See Fig. 3).5.4 Fasten the test panels to the vertical and horizontalsections of the wood frame with Type W drywall screws 32mm (1.25 in.) long insert
22、ed through the holes drilled accordingto 4.2.3.2.5.5 Seal the test panel joints on both sides with a singlelayer of 50-mm (2-in.) wide duct tape (centered on the joints).5.6 Seal the perimeter joint on both sides with a single layerof 50-mm (2-in.) wide duct tape (centered on the joints) asshown in
23、Fig. 4.6. Installation B: Double Layer Reference SpecimenWith a Common Plate6.1 The first layer of this double layer specimen is installedas for the single layer specimen, installation A.6.2 Once the frame and the panels on one side are in place,install the second set of panels on the opposite side
24、of the woodframe as shown in Fig. 5. Use a similar screw pattern forattaching the panels to the wood frame as on the first side.7. Installation C: Double Layer Reference Specimen withSeparate Plates-Empty Cavity7.1 The first layer of this double layer specimen is installedas for the single layer spe
25、cimen, installation A.7.2 Once the frame and the panels on one side are in place,install the second wood frame and the second set of panels asshown on the right side of Fig. 6. Use a similar screw patternfor attaching the panels to the second wood frame as on the firstside.7.3 The distance between t
26、he steel sheets, measured at thewood frames, shall be 150 6 3 mm.FIG. 1 Notching and Welding Corners of Steel AnglesFIG. 2 Construction Details of Steel Panels (not to scale)FIG. 3 Construction Details of Steel Panels (not to scale)E12890828. Installation D: Double layer reference specimen withSepar
27、ate Plates Sound Absorbing Material in theCavity8.1 This double layer specimen is the same as installation Cwith an added layer of sound-absorbing material in the cavity.8.2 The first layer of this double layer specimen is installedas for the single layer specimen, installation A.8.3 Once the frame
28、and the panels on one side are in place,install the second wood frame as shown on the right side ofFigure 6.8.4 Install a layer of glass fibre batts in the cavity of thespecimen. The batts shall be 150 6 5 mm thick with a densityof 10 6 1 kg/m3. This density corresponds to common buildinginsulation.
29、 Contact between the batts and the metal panelsshould be minimized in some convenient way.8.5 Attach the second set of panels to the second woodframe using a similar screw pattern as on the first side.9. Measurements9.1 Conduct a sound transmission loss test in accordancewith Test Method E90.9.2 The
30、 specimen area used in the calculation of transmis-sion loss shall be the area of the test opening filled by thepanels.9.3 The Test Method E90 test results for a single panelspecimen, installation A, may be compared to the values givenin Table 1, which were determined in an inter-laboratorystudy.33S
31、upporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR: E331007.NOTE 1Wood frame caulked, specimen joints and perimeter taped onboth sides.FIG. 4 Installation of Reference Specimen Showing Caulking ofWood Frame and the Taping of the Spec
32、imen Joints andPerimeter on Both SidesFIG. 5 Installation of Steel panels as double layer specimen on asingle wood frame. The centerline symbol, , represents the mid-plane of the test opening between two rooms.FIG. 6 Installation of Steel panels as double layer specimen on asingle wood frame. The ce
33、nterline symbol, , represents the mid-plane of the test opening between two rooms.E12890839.4 Although Test Method E90does not give results thatagree with mass law at all frequencies, test results for a singlepanel specimen may also be compared to theoretical values oftransmission loss calculated us
34、ing the equation for mass law:4TL 5 20log fm 2 47.7 (1)where:TL = transmission loss, dB,f = frequency, Hz, andm = panel mass, kg/m2.9.5 The Test Method E90test results for a double panelspecimen, installation B, may be compared to the values givenin Table 2 which were determined in an inter-laborato
35、ry study.9.6 No interlaboratory study has yet been conducted oninstallations C and D.10. Keywords10.1 reference specimen; sound transmission loss4Jones, Robert E., “Intercomparisons of Laboratory Determinations of AirborneSound Transmission Loss,” Journal of the Acoustical Society of America, Vol 66
36、,No. 1, July 1979, pp. 148164.TABLE 1 Mean and Standard Deviations of Transmission LossData on a Single Layer Specimen, Installation A.One Third OctaveBand CenterFrequency (Hz)Average LaboratoryValue of SoundTransmission Loss(dB)Standard Deviation(dB)50 12.2 1.963 12.3 1.280 10.8 2.0100 11.2 1.8125
37、12.1 1.2160 12.9 1.3200 14.6 1.3250 15.8 1.3315 17.6 1.1400 19.1 1.2500 20.8 1.1630 22.6 1.1800 24.3 1.01000 26.0 0.91250 28.1 0.81600 29.9 0.82000 31.7 0.92500 33.6 0.83150 35.4 1.14000 37.1 1.25000 38.6 1.4STC 25.3 0.9OITC 19.0 0.7TABLE 2 Mean and Standard Deviations of Transmission LossData on a
38、Double Layer Specimen, Installation BOne Third OctaveBand CenterFrequency (Hz)Average LaboratoryValue of SoundTransmission Loss(dB)Standard Deviation(dB)80 11.9 2.5100 10.4 2.3125 10.0 1.7160 11.6 2.0200 13.5 1.8250 15.3 2.2315 18.2 2.0400 20.9 2.1500 23.6 1.8630 27.1 2.0800 30.8 2.11000 34.7 2.2125
39、0 39.1 3.11600 43.5 3.02000 46.7 2.72500 50.5 2.93150 53.5 3.14000 55.0 3.75000 55.8 5.6STC 27.3 1.5OITC 19.1 1.1E1289084APPENDIX(Nonmandatory Information)X1. Record FormPhysical Measurements of Steel Sheets and PanelsX1.1 A suggested record form for physical measurementsof the unassembled and assem
40、bled panels is shown in Fig.X1.1.ASTM International takes no position respecting the validity of any 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
41、 infringement of such rights, are entirely their own responsibility.This standard is subject to revision 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 s
42、tandard or for additional standardsand should be addressed to ASTM International Headquarters. Your 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 you
43、r views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted 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 (e-mail); or through the ASTM website(www.astm.org).FIG. X1.1 Suggested Record FormE1289085
