1、Designation: E2988 15aStandard Practice forSpecimen Preparation and Mounting of Flexible FibrousGlass Insulation for Metal Buildings to Assess SurfaceBurning Characteristics1This standard is issued under the fixed designation E2988; the number immediately following the designation indicates the year
2、 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 a procedure for specimen prepa-r
3、ation and mounting when testing Flexible Fibrous GlassInsulation for Metal Buildings to assess flame spread andsmoke development as surface burning characteristics usingTest Method E84.1.2 This practice applies to products described in Specifi-cation C991.1.3 This practice provides instructions for
4、the testing of bothun-faced insulation (Specification C991 Type I) and faceinsulation (Specification C991 Type II).1.4 This practice does not provide pass/fail criteria that canbe used as a regulatory tool.1.5 Use the values stated in inch-pound units as the standardin referee decisions. The values
5、in the SI system of units aregiven in parentheses, for information only; see IEEE/ASTMSI-10 for further details.1.6 This fire standard cannot be used to provide quantitativemeasures.1.7 Fire testing of products and materials is inherentlyhazardous and adequate safeguards for personnel and propertysh
6、all be employed in conducting these tests. Fire testinginvolves hazardous materials, operations and equipment.1.8 This practice gives instructions on specimen preparationand mounting but the fire-test-response method shall be con-ducted in accordance with Test Method E84. See also Section8 for infor
7、mation on operator safety.1.9 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 pr
8、ior to use.2. Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC991 Specification for Flexible Fibrous Glass Insulation forMetal BuildingsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsIEEE/ASTM SI-10 Am
9、erican National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem3. Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice and associated with insulation issues, refer to terminologycontained in Terminology C168 or Specification C991. Fordefinition
10、s of terms used in this practice and associated withfire issues, refer to Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 metal rods, nas related to fire testing, steel rods,14in. (6.3 mm) diameter and between 23 and 24 in. (0.58 and 0.61m) long.4. Summary of Practice4.1 Th
11、is practice describes a procedure for specimen prepa-ration and mounting when testing flexible fibrous glass insu-lation for metal buildings to assess flame spread and smokedevelopment as surface burning characteristics using TestMethod E84.4.2 Flexible fibrous glass insulation for metal buildings i
12、s afibrous glass insulation, furnished in two types as described inSpecification C991. Type I is an un-faced insulation blanket.Type II is a Type I blanket that is post-processed by alaminating process that applies an adhesive bonded facing toone surface.1This practice is under the jurisdiction of A
13、STM Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.22 on SurfaceBurning.Current edition approved July 1, 2015. Published August 2015. Originallyapproved in 2015. Last previous edition approved in 2015 as E2988-15. DOI:10.1520/E2988-152For referenced ASTM standard
14、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
15、428-2959. United States14.3 Flexible fibrous glass insulation for metal buildingsshall be tested in accordance with the specimen preparation andmounting procedures described in this practice, using TestMethod E84.5. Significance and Use5.1 Flexible fibrous glass insulation for metal buildings iseval
16、uated in accordance with Test Method E84 to comply withbuilding code requirements. This practice describes, in detail,specimen mounting procedures for Type I and Type II metalbuilding insulation materials.5.2 The material to be tested shall be representative of theglass fiber blanket, facing and bon
17、ding adhesive used in actualfield installations.5.3 The limitations for this procedure are those associatedwith Test Method E84.6. Specimen Preparation and Mounting6.1 Test specimens shall consist of 24.5 6 0.5 ft (7.47 60.152 m) continuous, unbroken lengths or broken, buttedend-to-end lengths of th
18、e blanket insulation. The width shall bebetween 20 and 24 in. (0.50 and 0.60 m) with a thicknessbetween 2.0 and 4.0 in. (50 and 100 mm).6.2 The specimens shall be supported by nominally straightmetal rods inserted through the material and positioned suchthat the bottom of the rod is approximately14
19、in. (6.3 mm)from the surface to be exposed to the flame. The steel rods shallbe14 in. (6.3 mm) diameter, span the width of the tunnel andbe spaced at approximately 2 ft (0.6 m) intervals down thelength of the tunnel, including a rod at each end of thespecimen.6.2.1 When testing butted end-to-end, ea
20、ch test specimenshall have a rod inserted 3 in. (76 mm) from each butted end,and evenly spaced rods shall be added to the section tomaintain the test specimen in a relatively flat position.6.3 For Type I materials, the un-faced surface shall be thesurface exposed to the flame.6.4 For Type II materia
21、ls, the faced surface shall be thesurface exposed to the flame.6.4.1 For Type II material, a minimum of two specimensshall be tested. One specimen shall be tested with a longitudi-nal slit down the length of the sample oriented between theburners. The slit is to be of such depth as to expose the bon
22、dingadhesive and glass fiber insulation. The other specimen shall betested with the facing without a slit.6.5 When lowering the tunnel lid, care shall be taken toachieve contact with the specimen but to not compress thespecimen unduly.7. Testing of Specimens7.1 All testing shall be conducted using t
23、he proceduredescribed in Test Method E84.8. Operator Safety8.1 The primary concerns for operator safety are associatedwith the fire-test-response procedure, which is described inTest Method E84, and not with the specimen preparationprocedure. Safety recommendations are included in TestMethod E84.9.
24、Report9.1 Report the following information regarding the specificmounting procedure used:9.2 Which specimens were tested with the facing slit andwhich ones were tested with the facing without a slit.9.3 Report all the information required in the reportingsection of Test Method E84, including all obs
25、ervations, graphi-cal results and the values of the flame spread index and of thesmoke developed index in each test.10. Keywords10.1 facing; fire; fire test; flame spread index; metal build-ing insulation; smoke developed index; slit; tunnelAPPENDIX(Nonmandatory Information)X1. COMMENTARYX1.1 Introd
26、uctionIt has been shown that the carefulreplication of realistic fire scenarios is the most appropriatemeans of fire testing of products and systems. However, this isnot always achievable within the confines of a standard testmethod.X1.2 The use of any standard fire test method intrinsicallycarries
27、some limitations, including the source of heat or flame,the specimen size and orientation, the specimen location andthe fire-test-response characteristics measured.X1.3 Fire tests on flexible fibrous glass insulation for metalbuildings are often conducted by using Test Method E84.X1.3.1 The source o
28、f heat and flame in Test Method E84 aretwo gas burners supplying approximately 300 000 BTU/h (87.9kW) onto the test specimen from underneath for a period of 10min.X1.3.2 The approximate specimen sizes in Test Method E84are 24 ft (7.3 m) long by 20 to 24 in. (508 to 610 mm) wide.the recommended speci
29、men thickness height is up to 4 in. (102mm).X1.3.3 The test specimen is placed below the lid of the testchamber at a specified location.E2988 15a2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of
30、 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 subject to revision at any time by the responsible technical committee and must be reviewed every five
31、 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 Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical co
32、mmittee, 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 standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
33、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:/ 15a3
