1、Designation: E2573 17 An American National StandardStandard Practice forSpecimen Preparation and Mounting of Site-FabricatedStretch Systems to Assess Surface Burning Characteristics1This standard is issued under the fixed designation E2573; the number immediately following the designation indicates
2、the year oforiginal 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.1. Scope1.1 This practice describes procedures for specimen
3、prepa-ration and mounting when testing a site-fabricated stretchsystem to assess flame spread and smoke developed as surface-burning characteristics using Test Method E84.1.2 Testing is conducted with Test Method E84.1.3 This practice does not provide pass/fail criteria that canbe used as a regulato
4、ry tool.1.4 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 standard. See IEEE/ASTM SI-10 forfurther details.1.5 This fire standard cannot be used
5、 to provide quantitativemeasures.1.6 Fire testing of products and materials is inherentlyhazardous, and adequate safeguards for personnel and propertyshall be employed in conducting these tests. Fire testinginvolves hazardous materials, operations, and equipment. Thisstandard gives instructions on s
6、pecimen preparation andmounting, but the fire-test-response method is given in TestMethod E84. See also Section 10.1.7 This practice shall not apply to vinyl stretch ceilingmaterials, which are covered by Practice E2599.1.8 This standard does not purport to address all of thesafety concerns, if any,
7、 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.1.9 The text of this standard references notes and footnoteswhich provide explanatory material.
8、 These notes and footnotesshall not be considered requirements of the standard.1.10 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides
9、and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2E84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsE2599 Practice for Specimen Preparation and Moun
10、ting ofReflective Insulation, Radiant Barrier and Vinyl StretchCeiling Materials for Building Applications to AssessSurface Burning CharacteristicsIEEE/ASTM SI-10 International System of Units (SI): TheModern Metric System3. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice r
11、efer to Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 frame, nan item (plastic extrusion, wood, metal orother material) that is mounted to an existing substrate viamechanical fasteners or adhesive, that has a mechanism forholding an outer layer (fabric or vinyl) by tensio
12、n.3.2.2 joining material, nthe frame piece used to join twoor more site fabricated stretch panels together, to create amidseam.3.2.3 longitudinal midseam, na seam made from thejoining material used in the stretch system, which is centeredon the test specimen and runs the entire length of the testspe
13、cimen.3.2.4 self-supporting specimen, na specimen that remainsin place by its own structural characteristics both before andduring the fire test or is burnt or pyrolyzed prior to falling awayfrom its original position.1This practice is under the jurisdiction of ASTM Committee E05 on FireStandards an
14、d is the direct responsibility of Subcommittee E05.22 on SurfaceBurning.Current edition approved July 1, 2017. Published July 2017. Originally approvedin 2007. Last previous edition approved in 2012 as E257312. DOI: 10.1520/E2573-17.2For referenced ASTM standards, visit the ASTM website, www.astm.or
15、g, 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 19428-2959. United StatesThis internatio
16、nal standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committe
17、e.13.2.5 site-fabricated stretch system, na system, fabricatedon site and intended for acoustical, tackable or aestheticpurposes, that is comprised of three elements: (a) a frame(constructed of plastic, wood, metal or other material) used tohold fabric in place, (b) a core material (infill, with the
18、 correctproperties for the application), and (c) an outside layer,comprised of a textile, fabric or vinyl, that is stretched taut andheld in place by tension or mechanical fasteners via the frame.3.2.6 vinyl stretch ceiling material, na vinyl materialstretched and mechanically fastened to a noncombu
19、stible frameand intended to be used as a suspended ceiling withoutassociated backing material.3.2.7 wide span system, na system that employs a widespan fabric or vinyl, from 10 ft or more in width and minimizesthe use of a midseam or “joining” material.4. Summary of Practice4.1 This practice describ
20、es procedures for specimen prepa-ration and mounting when testing a site-fabricated stretchsystem to assess flame spread and smoke developed as surfaceburning characteristics using Test Method E84.5. Significance and Use5.1 Site-fabricated stretch systems used as interior finish areevaluated with Te
21、st Method E84 to comply with building, fire,or life safety code requirements. This practice describesspecimen preparation and mounting procedures for such ma-terials and systems.5.2 The limitations for this procedure are those associatedwith Test Method E84.5.3 Additional LimitationsThis practice do
22、es not apply totest systems that cannot be used to produce self-supportingspecimens. If the test specimen is not self-supporting, furtherguidance can be found in the appendix of Test Method E84.5.4 This practice shall not apply to vinyl stretch ceilingmaterials, which are covered by Practice E2599.6
23、. Conditioning6.1 The test specimens shall be conditioned as described inthe section on specimen conditioning in Test Method E84.7. Test Specimens7.1 Testing is to be conducted of test specimens represent-ing the composite site-fabricated stretch system.7.2 The test specimen shall contain a frame, c
24、ore materialand an outside layer (textile, fabric or vinyl), representing theinstalled system being tested.7.3 The test specimen sizes shall comply with those de-scribed in the test specimen section of Test Method E84. Thetest specimens shall have a width of between 2014 in. and 24in. (514 mm and 60
25、9 mm), a total length of 24 ft + 12 in. 6in. (7.32 m + 305 mm 152 mm), a minimum thickness of 0.5in. (13 mm) and a maximum thickness of 4 in. (101 mm). Thetotal test specimen shall consist of sections joined end-to-end.The minimum length of each section shall be the minimum sizeof the system to be u
26、sed in installed systems, except that thelast section (furthest away from the vent end) shall bepermitted to be smaller to complete the total specimen length.NOTE 1Typical frame lengths in installed systems are 6 to 9 ft(1848-2772 mm).NOTE 2Test Method E84 is intended for test specimens no thickerth
27、an 4 in. (101 mm).7.4 If the total thickness of the installed system being testedexceeds 4 in. (101 mm), construct a test specimen with athinner frame, using the same materials, for a total thickness of4 in. (101 mm).8. Test Specimen Preparation for Composite Site-Fabricated Stretch Systems8.1 The t
28、est specimen shall be prepared according to themanufacturers installation instructions.8.2 The test specimen shall be self-supporting panels.8.3 The test specimen sections shall consist of the framematerial on the panel perimeters, the core material, and thetextile, fabric or vinyl covering.8.4 The
29、test specimens shall have a longitudinal midseam(made from the frame pieces or from a joining piece) runningthe entire length of the specimen, to ensure that all componentsof the system are exposed to the flame front for the duration ofthe test.8.4.1 If the site-fabricated stretch system test specim
30、enrequires support of the longitudinal midseam, it shall besupported by14 in. (6.3 mm) diameter steel rods spanning thewidth of the tunnel and spaced not closer than 24 in. (609 mm)apart.8.5 For wide span systems (see 3.2.7), the normal “frame”piece shall be used to create the longitudinal midseam o
31、n thetest specimens.8.6 The test specimens for systems that are installed overgypsum wallboard in the field shall be prepared as discussedabove, with the test specimen then attached to gypsum wall-board using the manufacturers recommended mounting pro-cedure. The system shall include the longitudina
32、l midseamrunning the entire length of the test specimen.8.6.1 If the gypsum wallboard is not sufficient to support theweight of the test specimen assembly, the use of14 in. (6.3mm) diameter steel rods, spanning the width of the tunnel andspaced not closer than 24 in. (609 mm) apart, shall be permitt
33、edto be used to support the assembly.9. Testing of Specimens9.1 All testing shall be conducted using the methodologydescribed in Test Method E84.10. Operator Safety10.1 The primary concerns for operator safety are associ-ated with the fire-test-response procedure, Test Method E84,and not with the sp
34、ecimen preparation procedure. Safetyrecommendations are included in Test Method E84.11. Report11.1 Report the following within the Test Method E84 testreport:E2573 17211.1.1 a detailed description of the system being tested,including a description of the type of frame, core and outsidelayer material
35、s being used and of the relative dimensions ofeach.11.1.2 a detailed description of the specimen preparationused as per Section 8 of this document.11.1.3 measurements (thickness and width, in inches andmillimeters) of the midseam (joining material) that are placedlongitudinally down the center of th
36、e test specimen.11.1.4 all observations, graphical results and the values ofthe flame spread index and of the smoke developed index ineach test.12. Keywords12.1 fabric; fire; fire test; flame spread; smoke development;stretch system; textile; vinylASTM International takes no position respecting the
37、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 infringement of such rights, are entirely their own responsibility.This standard is
38、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 standard or for additional standardsand should be addressed to ASTM International Head
39、quarters. 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 your views known to the ASTM Committee on Standards, at the address shown below.This sta
40、ndard 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 173
