1、Designation: E2688 10Standard Practice forSpecimen Preparation and Mounting of Tapes to AssessSurface Burning Characteristics1This standard is issued under the fixed designation E2688; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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 a procedure for specimen prepa-ration and mounting when testing tapes up to and
3、including 8in. (203.2 mm) widths to assess flame spread and smokedevelopment as surface burning characteristics using TestMethod E84. Tapes in excess of 8 in. (203.2 mm) are to betested in full coverage as applied to fiber cement board asdescribed in Test Method E84.1.2 This practice applies to tape
4、s intended for various useswithin buildings. The tapes addressed in this practice are notable to be supported by their own structural characteristicsduring the test.1.3 Testing is conducted in accordance with Test MethodE84.1.4 This practice does not provide pass/fail criteria that canbe used as a r
5、egulatory tool.1.5 This practice does not apply to materials for which thetest specimen does not remain in place before and during thetest until maximum flame propagation has occurred.1.6 This practice is not for system evaluation. It is for thecomparison of the materials only.1.7 The results obtain
6、ed by using this mounting procedureare confined to the materials themselves as tested and are notcomparable to materials that are tested in a full tunnel widthapplication.1.8 Use the values stated in inch-pound units as the stan-dard, in referee decisions. The values in the SI system of unitsare giv
7、en in parentheses, for information only; see IEEE/ASTM SI-10 for further details.1.9 This fire standard cannot be used to provide quantitativemeasures.1.10 Fire testing is inherently hazardous. Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.11 This stand
8、ard gives instructions on specimen prepara-tion and mounting, but the fire-test-response method is given inTest Method E84. See also Section 9.1.12 The text of this standard references notes and footnoteswhich provide explanatory material. These notes and footnotesshall not be considered requirement
9、s of the standard.1.13 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 standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to
10、use.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and SealantsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsIEEE/ASTM SI-10 International System of Units (SI): TheModern Metric System3. Terminology3.1 Definit
11、ions: For definitions of terms used in this practiceand associated with fire issues, refer to the terminologycontained in Terminology E176. For definitions of terms usedin this practice associated with thin tapes refer to TerminologyC717.3.2 Definitions of Terms Specific to This Standard:3.2.1 self-
12、supporting specimen, na specimen that remainsin place by its own structural characteristics both before andduring the fire test.4. Summary of Practice4.1 This practice describes procedures for specimen prepa-ration and mounting when testing tapes up to and including 8in. (203.3 mm) in width to asses
13、s flame spread and smokedevelopment as surface burning characteristics using TestMethod E84. Tapes in excess of 8 in. (203.2 mm) are to betested in full coverage as applied to fiber cement board asdescribed in Test Method E84.1This practice is under the jurisdiction of ASTM Committee E05 on FireStan
14、dards and is the direct responsibility of Subcommittee E05.22 on SurfaceBurning.Current edition approved Jan. 1, 2010. Published February 2010. DOI: 10.1520/E2688-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual B
15、ook of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.2 This practice applies only to those tapes from which it isnot possible to de
16、velop specimens that are self-supporting bytheir own structural characteristics.4.3 The tapes addressed in this practice shall be tested inaccordance with the specimen preparation and mounting pro-cedures described in this practice, using Test Method E84.5. Significance and Use5.1 Building products
17、made with tapes are often used forapplications for which Test Method E84 is used for compliancewith building, life safety code or mechanical code require-ments. This practice describes, in detail, specimen mountingprocedures for those tapes which are not able to be supportedby their own structural c
18、haracteristics during the test.5.2 Codes are often silent with regard to testing tapes for theassessment of flame spread and smoke development as surfaceburning characteristics. This practice describes specimenpreparation and mounting procedures for such materials andproducts.5.3 The material shall
19、be representative of the materialsused in actual field installations.5.4 The limitations for this procedure are those associatedwith Test Method E84.6. Conditioning6.1 The specimens used for testing shall be conditioned asdescribed in the section on specimen conditioning in TestMethod E84.7. Specime
20、n Preparation and Mounting7.1 Tape width 2 in. (50.8 mm) or less:7.1.1 Specimens shall consist of two 24.5 6 0.5 ft (7.47 60.152 m) long lengths of tape installed down the center line ofeach burner (See Fig. 1) of the tunnel. Each length of tape shallbe as supplied for use in the field. Each specime
21、n shall consistof either one strip 2 in. (50.8 mm) wide or it shall consist of anumber of smaller strips to be laid side by side to form a widthof at least 2 in. (50.8 mm). See Fig. 1.7.1.2 The specimens shall be centered so that they align onthe center line of the burner nozzles.7.1.3 The tape shal
22、l be applied directly to a fiber-cementboard using only the manufacturer applied tape adhesive fortesting. If the tape is intended to be used only on metal/foilsurfaces, apply to sheet metal not less than 0.016 in. (0.4 mm)thick.7.1.4 When there is a concern over adhesion to the fibercement board, i
23、t is permissible to used nails or staples to holdthe tape in place. No more than one staple per 2 ft (610 mm)of tape shall be used.7.2 Tapes with widths greater than 2 in. (50.8 mm) up to andincluding 8 in. (203.2 mm).:7.2.1 Specimens shall consist of two 24.5 6 0.5 ft (7.47 60.152 m) long lengths o
24、f tape installed 8 inches (203.2 mm) oncenter down the center of the tunnel. Each length of tape shallbe the width as supplied for use in the field. See Fig. 2.7.2.2 The specimens shall be centered so that they align onthe center line of the burner nozzles.7.2.3 The tape shall be applied directly to
25、 a fiber-cementboard using only the manufacturer applied tape adhesive fortesting.7.2.4 When there is a concern over adhesion to the fibercement board, it is permissible to used nails or staples to holdthe tape in place. No more than one staple per 2 ft (610 mm)of tape shall be used.7.3 Tapes with w
26、idths greater than 8 in. (203.2 mm):7.3.1 Tapes in excess of 8 in. (203.2 mm) are to be tested infull coverage as applied to fiber cement board as described inTest Method E84.8. Testing of Specimens8.1 All testing shall be conducted using the methodologydescribed in Test Method E84.9. Operator Safet
27、y9.1 The primary concerns for operator safety are associatedwith the fire-test-response procedure, Test Method E84, andnot with the specimen preparation procedure. Safety recom-mendations are included in Test Method E84.10. Report10.1 Report a detailed description of the specimen beingtested.10.2 Re
28、port a detailed description of the specimen prepara-tion method used, per Section 7.10.3 Report all the information required in the reportingsection of Test Method E84, including observations, graphicalresults and the values of the flame spread index and of thesmoke developed index in each test.11.
29、Keywords11.1 fire test; flame spread; smoke developed; tapesFIG. 1 Schematic of Specimen PlacementE2688 102ASTM 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 th
30、at determination of the validity of any such patent rights, and the riskof 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 reappr
31、oved or withdrawn. Your comments are invited either for revision of this standard 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 f
32、eel 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 standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual re
33、prints (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 ASTM website (www.astm.org/COPYRIGHT/).FIG. 2 Schematic of Specimen Placement for Tapes Larger than 2 in. up to 8 in.E2688 103
