1、Designation: C1464 06 (Reapproved 2011)C1464 16Standard Specification forBent Glass1This standard is issued under the fixed designation C1464; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the requirements for bent glass used in general building construction, furniture, display, andvarious other non-automoti
3、ve applications.1.2 The dimensional values, stated in SI units are to be regarded as the standard. The values given in parentheses are providedfor information only.1.3 The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification. This standarddoes no
4、t purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents22.1 ASTM Standard
5、s:3C162 Terminology of Glass and Glass ProductsC1036 Specification for Flat GlassC1048 Specification for Heat-Strengthened and Fully Tempered Flat GlassC1172 Specification for Laminated Architectural Flat GlassC1376 Specification for Pyrolytic and Vacuum Deposition Coatings on Flat GlassC1422 Specif
6、ication for Chemically Strengthened Flat Glass2.2 ANSI StandardANSI Z -97.1 Safety Glazing Materials Used in BuildingsSafety Performance Specifications and Methods of Test2.3 Federal Document:4CPSC 16 CFR 1201 Consumer Product Safety Commission Safety Standard for Architectural Glazing Material3. Te
7、rminology3.1 Definitions:3.1.1 Refer to Terminology C162, Specifications C1036, C1422, C1376, and C1172, as appropriate.3.1.2 Blemishes in Flat GlassRefer to Specifications C1036, C1048, C1422, C1376, and C1172, as appropriate.3.2 Definitions of Terms Specific to This Standard:3.2.1 bent glass, glas
8、snflat glass that has been shaped while hot into a body having curved surfaces.3.2.2 chord, chordna straight line segment that joins two points of an arc.3.2.3 complex benda profile shape composed of curvature not easily defined by multiple radii that can result in a bent shapeon one or more axis, t
9、ypically defined by model or mold.3.2.4 compound bend, bendna profile shape composed of curvature of one or moremore than one radii, curved on two ormore axes.3.2.5 crossbend, crossbendndeviation from a straight edge along a line perpendicular to the curvature measured on theconcave side.1 This spec
10、ification is under the jurisdiction ofASTM Committee C14 on Glass and Glass Products and is the direct responsibility of Subcommittee C14.08 on Flat Glass.Current edition approved Oct. 1, 2011May 1, 2016. Published October 2011June 2016. Originally approved in 2000. Last previous edition approved in
11、 2006 asC1464C1464 06 (2011).-06. DOI: 10.1520/C1464-06R11.10.1520/C1464-16.2 Reference to these standards shall be the latest revision unless otherwise specified by the authority applying this specification.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer
12、 Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.4 Available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.This document is not an ASTM standard and is inte
13、nded only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the curre
14、nt versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.6 cylindrical bend, bendna profile shape composed of a single curvature with a constant radiu
15、s and no straight sections,all curved on a single axis.3.2.7 degree of angle, anglenthe angular measurement of a segment of a curve.3.2.8 depth, depthnon a circular bend, the distance from the midpoint of a chord to the arc measured along its radiusperpendicular to the circumference.3.2.9 elliptical
16、 bend, bendna curved profile shape composed of two or more tangential radii on a single axis.3.2.10 girth, girthnthe distance around the concave or convex surface measured perpendicular to the height including anyflats.3.2.11 height, heightnthe length measurement of the edge perpendicular to the hor
17、izontal arc or girth.3.2.12 multiple bend, bendna profile shape composed of a curvature of two or more radii, all curved on a single axis, withat least two of the curvatures possibly separated by a flat (plane) area, and with or without one or more additional flat (plane) areastangent to the curvatu
18、res.3.2.13 pock marks, marksnprocess surface blemishs that consist of small, shallow areas, circular in shape, on the surfaceof the glass.3.2.14 Ringring marksprocess surface blemishs that consist of shallow marks typically running along the perimeter of theglass surface.3.2.15 Rotationrotationa con
19、dition where vertical edges (perpendicular to arc) are not parallel to bending axis.3.2.16 Serpentineserpentine bendprofile shape composed of concave and convex curvatures of one or more radii on a singleaxis with or without flat areas tangent to the curvatures.3.2.17 Shapeshapecontoured form includ
20、ing curvature, arc(s), and even flats.3.2.18 Singlesingle benda profile composed of a single radius curved on a single axis, possibly with one or two flat (plane)areas tangent to the curvature.3.2.19 sphericala profile shape composed of curvature of one radius, curved on more than two axes.3.2.20 Tw
21、isttwistone or more of the corners of the glass are not in the same plane.4. Classification4.1 KindsBent glass furnished under this specification shall be of the following kinds, as specified:4.1.1 Kind BABent glass shall be annealed flat glass, either transparent, patterned, coated, or wired glass
22、in accordance withthe applicable requirements of Specification C1036, C1048, or C1376 as further processed to conform with the requirementshereinafter specified for bent glass.4.1.2 Kind BCSChemically strengthened bent glass shall be flat glass, either transparent or patterned, in accordance with th
23、eapplicable requirements of Specification C1036, as further processed to conform with the requirements hereinafter specified forbent glass and then in accordance with the applicable requirements of Specification C1422 for chemically strengthened flat glass.4.1.3 Kind BFTFully tempered bent glass sha
24、ll be flat glass, either transparent coated or patterned, in accordance with theapplicable requirements of Specification C1036, and C1376 if applicable, as further processed to conform with the requirementshereinafter specified for bent glass and then in accordance with the applicable requirements o
25、f Specification C1048 for fullytempered glass.4.1.4 Kind BHSHeat-strengthened bent glass shall be flat glass, either transparent coated or patterned, in accordance with theapplicable requirements of Specification C1036, and C1376 if applicable, as further processed to conform with the requirementshe
26、reinafter specified for bent glass and then in accordance with the applicable requirements of Specification C1048 forheat-strengthened glass.4.1.5 Kind BLLaminated bent glass shall be flat glass, either transparent coated or patterned, in accordance with the applicablerequirements of Specification C
27、1036, and C1376 if applicable, as further processed with the requirements hereinafter specified forbent glass and then in accordance with the applicable requirements of Specification C1172 for laminated glass.4.1.6 Kind BXBent glass with miscellaneous combinations not previously combined.NOTE 1Not a
28、ll configurations or combinations are possible. Consult with the fabricator or manufacturer before specifying.5. Ordering Information5.1 Purchasers should include the following information in procurement documents:5.1.1 Title, number, and date of this specification.5.1.2 Kind of bent glass as referr
29、ed to in this specification (see Section 4).5.1.3 Fabrication requirements (see Section 6).5.1.4 Thickness Requirements:5.1.4.1 Overall thickness designation.5.1.4.2 Thickness of individual lites in the laminate.C1464 1625.1.4.3 Interlayer thicknesstype and type.thickness.5.1.5 Interlayer type and c
30、olor5.1.6 Nominal height, width, radius (see definitions and Figs. 1-36).5.1.6.1 BlacklineBlack-line or bluelineblue-line prints, drawing, template, configuration, specification, or other forms ofinformation which detail glass type, overall size, type of bend, and orientation.orientation5.1.7 Safety
31、 standards or regulations to which the glass must conform.conform, be labeled, or both.5.1.8 Packaging RequirementsGlass packaging and protection will be standard manufacturer practice unless otherwisespecified. Consult manufacturer before specifying.6. Fabrication Requirements6.1 Cutting to overall
32、 dimensions, edgework, drilled holes, notching, grinding, sandblasting, and etching are permissible.6.1.1 When the glass is specified as chemically strengthened, heat-strengthened, or fully tempered, the fabrication processes in6.1 must be completed prior to the strengthening process.6.2 Glass inten
33、ded for safety glazing applications as specified by the purchaser, federal regulation or building codes shall bepermanently marked with the name or trademark of the manufacturer and the designation of the marked or labeled in accordancewith the applicable safety glazing standard.6.3 Thickness Tolera
34、ncesThickness shall be in accordance with the thickness requirements of Specifications C1036 andC1172.6.4 Dimensional Tolerances:6.4.1 Height shall not exceed the deviations shown in Table 1.6.4.2 Girth Shape Accuracy and Crossbend shall not exceed the deviationstolerances shown in Table 2.6.4.3 Sha
35、pe accuracy Twist shall not exceed the deviationstolerances shown in Table 3.6.4.4 Crossbend shall not exceed the deviations shown in Table 4.6.4.5 Twist shall not exceed the deviations shown in Table 5.6.5 BlemishesFor process surface blemishes, refer to Specifications C1036 for flat glass and anne
36、aled glass, C1172 forlaminated glass, and C1376 for coated glass.6.5.1 Pock marks shall not exceed 1.6 mm (116 in.) in the central portion of the glass and 2.4 mm (332 in.) in the outer area (see7.3.4).NOTE 2The central area is considered to form an oval or circle centered on the lite whose axes or
37、diameters do not exceed 80 % of the overallFIG. 1 Cylindrical BendA = outside radius,B = chord,C = height,D = girth, andE = depth.C1464 163dimension. The remaining area is considered the outer area.NOTE 3Separated by at least 305 mm (12 in.).6.5.2 Ring marks shall not exceed 1.6 mm (116 in.) in the
38、central portion of the glass and 2.4 mm (332 in.) in the outer area (see7.3.4). See Note 12 and Note 23.6.6 DistortionThis standard addresses flat glass that is hot formed by mechanical or gravity actions at temperatures exceedingthe softening point of glass to induce a permanent shape. The original
39、 flatness and surface quality will be altered in the formingprocess where the softened glass stretches and or contacts the molds, forms or fixtures utilized to accomplish the final shape. Thedistortion and alteration of the surface quality is inherent in the process, cannot be totally eliminated or
40、adequately defined byempirical measurements presented in this specification. Specifiers should be aware that perceived distortion is rooted in theobservers distance and angle to the plane of the glass, linearity and distance of reflected objects relative to the plane of the glazing,as well as, glass
41、 kind, production methodologies and heat-treatments of the product. Additionally, installation conditions thatproduce uneven or excessive pressure on the glazing can produce distortions. Design professionals should discuss options with thefabricator to minimize perceived distortions prior to specify
42、ing. The observation of full-scale mock-ups viewed as similar to thefinal installed conditions is highly recommended.7. Test Methods7.1 Impact Test for Safety GlazingTest and interpret in accordance with CPSC 16 CFR 1201.1201, ANSI Z97.1, or both.7.2 Dimensions:7.2.1 Girth is measured on the convex
43、surface with a flexible tape.7.2.2 Length of edge is measured with a stable, sturdy tape.7.3 Dimensional Inspection:7.3.1 Shape accuracy is determined by placing a template on the concave surface of the bend, then measuring the deviationbetween the template and glass or placing glass arc on tracing
44、of theoretical shape on either concave or convex line, then measuringthe deviation between the tracing and the glass.7.3.2 Twist is determined by setting glass in a 90 test fixture that is inclined 5 to 7 from vertical. The glass is positioned withthe bottom corners in tight to the back surface. If
45、required, the top corner that is touching, or closest to touching, can be held againstthis surface. The actual distance that the other corner is away from the surface is the twist value.FIG. 2 Single BendF1 = straight leg dimension,F2 = straight leg dimension,A = degree of angle,R = radius of curve,
46、 andL = length.C1464 1647.3.3 Crossbend is determined by placing a straightedge along the vertical edge (perpendicular to the arc) on the concave surfaceof glass, then measuring the distance between the glass and straightedge.7.3.4 Visual InspectionPlace specimen in a vertical position. The viewer s
47、hall look through the specimen, using daylightwithout direct sunlight, or using a background light suitable for observing the blemishes. View at 78 in. (2 m).2 m (78 in.).8. Keywords8.1 bent glass; chemically strengthened; curved glass; heat-strengthened; laminated; temperedFIG. 3 Multiple BendF1, F
48、2, F3 = straight leg dimensions,A1, A2 = curve angles,R1, R2 = curve radii, andL = length.A = outside radiusD = girthE = depthFIG. 4 Spherical (A, B and E are equal)A = outside radius,B = secondary radius, andE = depth.C1464 165FIG. 45 Compound Bend(A, B and E not equal)FIG. 6 Complex BendTABLE 1 He
49、ight TolerancesHeight, mm (in.) Nominal Glass Thickness, mm (in.)Up to 12 (Up to 12) 12 (12 )0 to 1520 3.2 4.8(0-60) (18 ) (316)1520 to 2000 3.2 4.8(60 to 78) (18 ) (316)2000 4.8 4.8(78) (316) (316)TABLE 1 Height and Girth TolerancesDimension, mm(in.) XNominal Glass Thickness, mm (in.)#12 (#1/2 ) 12 ( 1/2 )Height Girth Height GirthX # 1524 3.2 3.2 4.8 4.8(X # 60) (1/8) 1/8 (3/16) (3/16)1524 1981 4.8 4.8 4.8 6.4(X 78) (3/16) 3.16 (3/16) (1/4)C1464 166TABLE 2 Girth TolerancesGirth,
