1、Designation: D5206 13 An American National StandardStandard Test Method forWindload Resistance of Rigid Plastic Siding1This standard is issued under the fixed designation D5206; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear 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.1. Scope1.1 This test method describes methods for testing andevaluating windload resistance of rigid plastic siding whenfa
3、stened in accordance with Practice D4756.1.2 The proper use of this test method requires a knowledgeof the principles of pressure measurement.1.3 This test method describes the apparatus and the proce-dures to be used to determine an average maximum sustainedstatic test pressure, or ultimate test pr
4、essure values, or both,with static pressure applied uniformly to a specimen.NOTE 1There is no known ISO equivalent to this test method.1.4 The values expressed in inch-pound units are to beregarded as the standard. The SI equivalents in parentheses arefor information only.1.5 This standard does not
5、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. For specificprecautionary statements, see
6、 Section 7.2. Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3679 Specification for Rigid Poly(Vinyl Chloride) (PVC)SidingD4756 Practice for Installation of Rigid Poly(Vinyl Chlo-ride) (PVC) Siding and SoffitE
7、631 Terminology of Building Constructions3. Terminology3.1 GeneralDefinitions are in accordance with Terminolo-gies D883 and E631 and abbreviations are in accordance withTerminology D1600 unless otherwise indicated.3.2 Definitions of Terms Specific to This Standard:3.2.1 maximum sustained static tes
8、t pressurethe greatestdifference in static air pressure (negative or positive) that a testspecimen withstands without failure, expressed as force persquare foot (or pascals).3.2.2 nail hem thicknessthe average thickness of the nailhem as measured between the nail slots.3.2.3 specimenthe entire assem
9、bled siding panel as de-scribed in Section 8.3.2.4 static test pressurethe specific difference in static airpressure (positive or negative) for which the specimen is to betested expressed as force per square foot (or pascals).3.2.5 ultimate test pressurethe difference in static airpressure (positive
10、 or negative) at which failure occurs ex-pressed as force per square foot (or pascals).4. Summary of Test Method4.1 This method can be used to determine either themaximum sustained static test pressure or the ultimatepressure, or both, for the siding specimen. The procedureconsists of sealing the te
11、st specimen with or against one face ofa test chamber, supplying air to or exhausting air from thechamber at a rate required to maintain a specific static airpressure across the specimen for a specific time period.Pressure is applied in increments and the sample observed forfailure at each stage, to
12、 determine the maximum sustainedstatic test pressure, the ultimate test pressure, or both.5. Significance and Use5.1 This test method is a standard procedure for determiningwindload resistance of rigid plastic siding under specifieduniform static pressure difference. This typically is intended torep
13、resent the effects of wind loads on exterior building sur-faces. The actual loading on building surfaces is quite complex,varying with wind direction, time, height above ground,building shape, terrain, surrounding structures, and other fac-tors.1This test method is under the jurisdiction of ASTM Com
14、mittee D20 on Plasticsand is the direct responsibility of Subcommittee D20.24 on Plastic BuildingProducts.Current edition approved Jan. 1, 2013. Published January 2013. Originallyapproved in 1991. Last previous edition approved in 2006 as D5602 06a. DOI:10.1520/D5206-13.2For referenced ASTM standard
15、s, 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.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19
16、428-2959. United States15.2 Design wind pressure is selected for specific geographi-cal locations from wind velocity maps prepared by the NationalWeather Service or other sources. Refer to Annex A1 ofSpecification D3679 for additional detailed information relat-ing to use of this test method for eva
17、luation of rigid poly(vinylchloride) (PVC) siding.NOTE 2In applying the results of this test method, note that theperformance of rigid PVC siding is a function of installation, and thespecimen may or may not truly represent the actual application. In service,performance will also depend on the rigid
18、ity of supporting construction,and on the resistance of other components to deterioration by variouscauses, to thermal expansion and contraction, etc.6. Apparatus6.1 The description of apparatus is general in nature; anyequipment capable of performing the test procedure within theallowable tolerance
19、s is permitted.6.2 Major Components (See Fig. 1):6.2.1 Test ChamberA test chamber or box with anopening, a removable mounting panel, or one open side inwhich or against which the specimen is installed. Either thepositive test chamber configuration or the negative test cham-ber configuration shall be
20、 used to perform this test. (See Fig.1.) At least one static pressure tap shall be provided to measurethe chamber pressure and shall be so located that the reading isunaffected by the velocity of the air supply to or from thechamber or any other air movement. The air supply openinginto the chamber s
21、hall be arranged so that the air does notimpinge directly on the test specimen with any significantvelocity. A means of access into the chamber to facilitateadjustments, observations, and measurements after the speci-men has been installed is permitted.NOTE 3The test chamber or the specimen mounting
22、 frame, or both,must not deflect under the test load in such a manner that the performanceof the specimen will be affected.6.2.2 Air SystemA controllable blower, a compressed airsupply, an exhaust system, or reversible controllable blowerdesigned to provide the required maximum air pressure differ-e
23、nce across the specimen. The system shall provide an essen-tially constant air pressure difference for the required testperiod.6.2.3 Pressure Measuring ApparatusA device to measurethe test pressure difference within a tolerance of 62%.7. Safety Precautions7.1 Take proper precautions to protect the o
24、bservers in theevent of any failure. At the pressures used in this test method,considerable energy and hazard are involved. In cases offailure, the hazard to personnel is less with a negative pressureconfiguration, as the specimen will tend to blow into the testchamber rather than out. Do not permit
25、 personnel in suchchambers during tests and lockout chambers during tests.8. Test Specimens8.1 SamplingSiding samples for test specimens shall beselected at random from production stock.FIG. 1 Test ChamberD5206 1328.2 Prepare a test specimen frame to simulate constructionmethods that will be expecte
26、d in the field. The frame shall besized to accommodate a minimum of three stud spaces wideand a minimum of four siding panels high. Measure the nailhem thickness at a minimum of 5 locations along the nail hemprior to mounting the panel.8.2.1 Stud spacing shall have either 16 or 24-in. (406 or 609mm)
27、 centers in accordance with the manufacturers fasteninginstructions.8.2.2 The overall height of the test specimen frame shall beadjusted for siding panels of varying height to keep thedistance between the frame and the siding at the top and bottomto a minimum and yet provide clearance between siding
28、 andframe. (See Fig. 1.)8.3 Apply 2-mil (0.0508 mm) maximum thickness plasticfilm between the siding and the studs or sheathing and seal itto the perimeter of the test frame. If sheathing is applied to theexterior of the studs, 2-in. (50.8 mm) minimum diameter holescentered horizontally and vertical
29、ly between studs shall be cutthrough the sheathing to allow pressure application to theplastic film.8.3.1 Film application must permit full pressure load trans-fer to the siding test specimen and must not prevent movementor failure of the specimen. Apply film loosely with extra foldsof material at e
30、ach corner and at all offsets and recesses. Whenload is applied, there shall be no fillet caused by tightness ofthe plastic film.8.4 Apply a starter strip and at least four siding panels to thetest specimen frame as specified in the section on application ofhorizontal siding in Practice D4756 (9.1).
31、8.5 In cases where siding is not designed or configured foruse as horizontal panels, the test structure shall be modified toprovide a test exposure similar to that described in 8.2 and 8.4,with the siding installed in accordance with the manufacturersinstructions.8.6 Prepare six identical test speci
32、mens under uniformpreparation conditions by experienced personnel so as toprovide adequate specimens for retests or determination ofultimate test pressure (when required) in addition to static testpressure.9. Procedure9.1 Position a test specimen frame vertically or horizontallyover the opening in t
33、he test chamber (box) so as to subject theentire test specimen to the pressure load. The orientation of thesiding face will depend upon whether a positive or negativechamber configuration is used. The test configuration shallcreate a load on the siding in the direction that would tend topull the sid
34、ing off the wall.9.2 Install a filler panel in the test chamber of box openingnot covered by the specimen frame.9.3 Seal all seams in the equipment and test chamber whichcould permit pressure leakage during the test.9.4 Failure of siding specimen has occurred when any of thefollowing criteria are pr
35、esent:9.4.1 Siding nail tab is torn or disengaged from fastener.9.4.2 Permanent buckling of siding.9.4.3 Fastener withdrawal from frame.9.4.4 Permanent disengagement of locks.9.5 ProcedureThis procedure determines the maximumsustained static test pressure, the ultimate test pressure forfailure, or b
36、oth, for the siding.9.5.1 Check the specimen for proper adjustment and lockoutthe chamber if human entry is possible.9.5.2 Apply a preload of 5 lbf/ft2(239.4 Pa) to the testspecimen and hold for 30 s. Release pressure difference acrossthe specimen, and allow a 1-min recovery period.9.5.3 Apply a pre
37、ssure difference across the specimen inincrements of 5 lbf/ft2(239.4 Pa), holding for 30 s beforeincreasing the next 5 lbf/ft2(239.4 Pa). Continue test untilfailure occurs. Record the pressure at failure, which is theultimate pressure, as well as the mode of failure. Record thehighest pressure that
38、was sustained for 30 s without failure,which is the maximum sustained static test pressure.9.5.4 Test two additional specimens for failure pressuredifference as detailed in 9.5.1 to 9.5.3. For each sample, recordthe pressure at failure, which is the ultimate test pressure, andthe failure mode. Recor
39、d the highest pressure that was sus-tained for 30 s without failure, which is the maximumsustained static test pressure.9.5.5 Average the pressure at failure for each of the threespecimens and report this value as the average ultimate testpressure of the siding product. Average the highest pressuret
40、hat was sustained for 30 s without failure for each of the threespecimens and report this value as the average maximumsustained static test pressure.9.5.6 For the test results to be considered valid, the ultimatetest pressure and the maximum sustained static test pressure foreach of the three specim
41、ens must fall within the followingrequired range:(1) For average test pressure less than 33.33 lbf/ft2, theresult for each of the three specimens is not greater than 5 psfabove or below the average of the three specimens.(2) For average test pressure greater than or equal to 33.33lbf/ft2(1596 Pa), t
42、he result for each of the three specimens isnot greater than 15 percent above or below the average of thethree pressures.9.5.6.1 If the result for any of the three specimens fallsoutside the required range, a test with a fourth specimen is tobe conducted. The average of all four tests is reported.10
43、. Report10.1 Report the following information:10.1.1 Date of the test and the report.10.1.2 Identification of the siding (manufacturer, trademark,or code, lot number, source of supply, dimensions, model type,material) and other related information.10.1.3 Specific details of test parameters including
44、 sidingnominal and measured thickness, siding style, fasteners used,number of siding spans used, stud spacing, nail slot edgedistance, average nail hem thickness, type and thickness ofsheathing material, and other pertinent information. If a doublenail hem is used, the thickness of both nail hem wal
45、ls shall beD5206 133reported. Any deviation from the test procedure in Sections 8and 9 shall be reported.10.1.4 Detailed drawings of the test specimen, showingdimensioned section profiles and any other pertinent details.Any deviation from the drawings or any modifications made tothe specimen to obta
46、in the reported values shall be noted on thedrawing and in the report.10.1.5 Any deviation from the manufacturers installationinstructions or any modifications made to the test specimen toobtain the reported values shall be noted on the installationinstructions and the test report.10.1.6 A record of
47、 visual observations made during theapplication of pressure and during the examination for failurecriteria.10.1.7 A tabulation of test pressure difference applied toeach specimen, specimen orientation, duration of pressureapplication, and failure mode for each test performed.10.1.8 As appropriate, t
48、he ultimate test pressure, the aver-age maximum sustained static test pressure, or both.10.1.9 A statement that the tests were conducted in accor-dance with this test method, or a full description of anydeviations from this test method.10.1.10 Author of the report.10.1.11 Testing agency which conduc
49、ted the tests and re-quester of tests, including addresses.10.1.12 Ambient conditions including temperature, beforeand during tests.10.1.13 Signatures of persons responsible for supervision ofthe tests and a list of official observers.10.1.14 Append to the report any data not required herein,but useful to a better understanding of the test results,conclusions, or recommendations.11. Precision and Bias11.1 PrecisionDue to the subjective nature of the tests(pass/fail mode), the many variable styles of siding under test,the variable installation practice depending on
