1、Designation: E1300 12a1E1300 16Standard Practice forDetermining Load Resistance of Glass in Buildings1This standard is issued under the fixed designation E1300; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1 NOTEFigures A1.13 and A1.14 and Appendix 8 were corrected editorially in October 2012.1. Scope1.1 This practice describes procedures to de
3、termine the load resistance (LR) of specified glass types, including combinationsof glass types used in a sealed insulating glass (IG) unit, exposed to a uniform lateral load of short or long duration, for a specifiedprobability of breakage.1.2 This practice applies to vertical and sloped glazing in
4、 buildings for which the specified design loads consist of wind load,snow load and self-weight with a total combined magnitude less than or equal to 15 kPa (315 psf). This practice shall not applyto other applications including, but not limited to, balustrades, glass floor panels, aquariums, structu
5、ral glass members, and glassshelves.1.3 This practice applies only to monolithic and laminated glass constructions of rectangular shape with continuous lateralsupport along one, two, three, or four edges. This practice assumes that (1) the supported glass edges for two, three, and four-sidedsupport
6、conditions are simply supported and free to slip in plane; (2) glass supported on two sides acts as a simply supported beam;and (3) glass supported on one side acts as a cantilever. For insulating glass units, this practice only applies to insulating glass unitswith four-sided edge support.1.4 This
7、practice does not apply to any form of wired, patterned, etched, sandblasted, drilled, notched, or grooved glass. Thispractice does not apply to glass with surface andor edge treatments that alterreduce the glass strength.1.5 This practice addresses only the determination of the resistance of glass
8、to uniform lateral loads. The final thickness and typeof glass selected also depends upon a variety of other factors (see 5.3).1.6 Charts in this practice provide a means to determine approximate maximum lateral glass deflection. Appendix X1 providesadditional procedures to determine maximum lateral
9、 deflection for glass simply supported on four sides.1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for mathematicalconversions to inch-pound units that are provided for information only and are not considered standard.1.8 Appendix X2 lists
10、the key variables used in calculating the mandatory type factors in Tables 1-3 and comments on theirconservative values.1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropr
11、iate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1036 Specification for Flat GlassC1048 Specification for Heat-Strengthened and Fully Tempered Flat GlassC1172 Specification for Laminated Architectural F
12、lat GlassD4065 Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of ProceduresE631 Terminology of Building Constructions1 This practice is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.52 on
13、Glass Use inBuildings.Current edition approved May 1, 2012June 1, 2016. Published June 2012August 2016. Originally approved in 1989. Last previous edition approved in 2012 asE1300 12.E1300 12a1. DOI: 10.1520/E1300-12A.10.1520/E1300-16.2 For referencedASTM standards, visit theASTM website, www.astm.o
14、rg, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what chang
15、es 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 current versionof the standard as published by ASTM is to be considered the offici
16、al document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 Definitions:3.1.1 Refer to Terminology E631 for additional terms used in this practice.3.2 Definitions of Terms Specific to This Standard:3.2.1 acid etched
17、glass, nglass surface that has been treated primarily with hydrofluoric acid and potentially in combinationwith other agents. Acid etched glass strength shall be considered as equivalent to float glass in this practice provided the glassthickness conforms to Specification C1036.3.2.2 aspect ratio (A
18、R), nfor glass simply supported on four sides, the ratio of the long dimension of the glass to the shortdimension of the glass is always equal to or greater than 1.0. For glass simply supported on three sides, the ratio of the length ofone of the supported edges perpendicular to the free edge, to th
19、e length of the free edge, is equal to or greater than 0.5.3.2.2 etched glass, nglass surface that has been attacked with hydrofluoric acid or other agent, generally for marking ordecoration.3.2.3 glass breakage, nthe fracture of any lite or ply in monolithic, laminated, or insulating glass.3.2.4 Gl
20、ass Thickness:3.2.4.1 thickness designation for monolithic glass, na term that defines a designated thickness for monolithic glass as specifiedin Table 4 and Specification C1036.3.2.4.1 thickness designation for laminated glass (LG), na term used to specify a LG construction based on the combinedthi
21、cknesses of component plies.(1) Add the minimum thicknesses of the individual glass plies and the nominal interlayer thickness. If the sum of all interlayerthicknesses is greater than 1.52 mm (0.060 in.) use 1.52 mm (0.060 in.) in the calculation.(2) Select the nominal thickness or designation in Ta
22、ble 4 having the closest minimum thickness that is equal to or less thanthe value obtained in 3.2.4.23.2.4.1 (1).(3) ExceptionsThe construction of two 6-mm (14-in.) glass plies plus 0.38-mm (0.015-in) or 0.76-mm (0.030-in.) interlayershall be defined as 12 mm (12 in.). The construction of two 2.5-mm
23、 (332-in.) glass plies plus 1.52-mm (0.060-in.) interlayer shallbe defined as 5 mm (316 in.). The construction of two 4-mm (532-in.) glass plies plus any thickness interlayer shall be defined as8 mm (516 in.).TABLE 1 Glass Type Factors (GTF) for a Single Lite of Monolithicor Laminated Glass (LG)GTFG
24、lass Type Short Duration Load (3 s) Long Duration Load(30 days)AN 1.0 0.43HS 2.0 1.3FT 4.0 3.0TABLE 2 Glass Type Factors (GTF) for Double Glazed InsulatingGlass (IG), Short Duration LoadLite No. 1Monolithic Glass orLaminated GlassTypeLite No. 2Monolithic Glass or Laminated Glass TypeAN HS FTGTF1 GTF
25、2 GTF1 GTF2 GTF1 GTF2AN 0.9 0.9 1.0 1.9 1.0 3.8HS 1.9 1.0 1.8 1.8 1.9 3.8FT 3.8 1.0 3.8 1.9 3.6 3.6TABLE 3 Glass Type Factors (GTF) for Double Glazed InsulatingGlass (IG), Long Duration Load (30 day)Lite No. 1Monolithic Glass orLaminated GlassTypeLite No. 2Monolithic Glass or Laminated Glass TypeAN
26、HS FTGTF1 GTF2 GTF1 GTF2 GTF1 GTF2AN 0.39 0.39 0.43 1.25 0.43 2.85HS 1.25 0.43 1.25 1.25 1.25 2.85HS 1.25 0.43 1.17 1.17 1.25 2.85FT 2.85 0.43 2.85 1.25 2.85 2.85FT 2.85 0.43 2.85 1.25 2.71 2.71E1300 1623.2.4.2 thickness designation for monolithic glass, na term that defines a designated thickness f
27、or monolithic glass as specifiedin Table 4 and Specification C1036.3.2.5 Glass Types:3.2.5.1 annealed (AN) glass, na flat, monolithic, glass lite of uniform thickness where the residual surface stresses are nearlyzero as defined in Specification C1036.3.2.5.2 fully tempered (FT) glass, na flat, mono
28、lithic, glass lite of uniform thickness that has been subjected to a special heattreatment process where the residual surface compression is not less than 69 MPa (10 000 psi) or the edge compression not lessthan 67 MPa (9700 psi) as defined in Specification C1048.3.2.5.3 heat strengthened (HS) glass
29、, na flat, monolithic, glass lite of uniform thickness that has been subjected to a specialheat treatment process where the residual surface compression is not less than 24 MPa (3500 psi) or greater than 52 MPa (7500psi) as defined in Specification C1048.3.2.5.4 insulating glass (IG) unit, nany comb
30、ination of two or three glass lites that enclose one or two sealed spacesrespectively, filled with air or other gas.3.2.5.5 laminated glass (LG), na flat lite of uniform thickness consisting of two or more monolithic glass plies bondedtogether with an interlayer material as defined in Specification
31、C1172.(1) DiscussionMany different interlayer materials are used in LG. The information in this practice applies only to polyvinylbutyral (PVB) interlayer or those interlayers that demonstrate equivalency according to Appendix X8.3.2.6 glass type factor (GTF), na multiplying factor for adjusting the
32、 LR of different glass types, that is, AN, HS, or FT inmonolithic glass, LG, or IG constructions.3.2.7 lateral, adjperpendicular to the glass surface.3.2.8 load, na uniformly distributed lateral pressure.3.2.8.1 specified design load, nthe magnitude in kPa (psf), type (for example, wind or snow) and
33、 duration of the load givenby the specifying authority.3.2.8.2 load resistance (LR), nthe uniform lateral load that a glass construction can sustain based upon a given probability ofbreakage and load duration.TABLE 4 Nominal and Minimum Glass ThicknessesNominalThickness orDesignation,mm (in.)Minimum
34、Thickness,mm (in.)2.5 (332) 2.16 (0.085)2.7 (lami) 2.59 (0.102)3.0 (18) 2.92 ( 0.115)4.0 (532) 3.78 ( 0.149)5.0 (316) 4.57 (0.180)6.0 (14) 5.56 (0.219)8.0 (516) 7.42 (0.292)10.0 (38 ) 9.02 (0.355)12.0 (12 ) 11.91 (0.469)16.0 (58 ) 15.09 (0.595)19.0 (34 ) 18.26 (0.719)22.0 (78 ) 21.44 (0.844)25.0 (1)
35、 24.61 (0.969)TABLE 4 Nominal and Minimum Glass ThicknessesNominalThickness orDesignation,mm (in.)MinimumThickness,mm (in.)2.0 (picture) 1.80 (0.071)2.5 (332) 2.16 (0.085)2.7 (lami) 2.59 (0.102)3.0 (18) 2.92 ( 0.115)4.0 (532) 3.78 ( 0.149)5.0 (316) 4.57 (0.180)6.0 (14) 5.56 (0.219)8.0 (516) 7.42 (0.
36、292)10.0 (38 ) 9.02 (0.355)12.0 (12 ) 11.91 (0.469)16.0 (58 ) 15.09 (0.595)19.0 (34 ) 18.26 (0.719)22.0 (78 ) 21.44 (0.844)25.0 (1) 24.61 (0.969)E1300 163(1) DiscussionMultiplying the non-factored load (NFL) from figures in Annex A1 by the relevant GTF and load share (LS)factors gives the LR associa
37、ted with a breakage probability less than or equal to 8 lites per 1000.3.2.8.3 long duration load, nany load lasting approximately 30 days.(1) DiscussionFor loads having durations other than 3 s or 30 days, refer to Table X4.1.3.2.8.4 non-factored load (NFL), nthree second duration uniform load asso
38、ciated with a probability of breakage less than orequal to 8 lites per 1000 for monolithic AN glass as determined from the figures in Annex A1.3.2.8.5 glass weight load, nthe dead load component of the glass weight.3.2.8.6 short duration load, nany load lasting 3 s or less.3.2.8 load, na uniformly d
39、istributed lateral pressure.3.2.8.1 glass weight load, nthe dead load component of the glass weight.3.2.8.2 load resistance (LR), nthe uniform lateral load that a glass construction can sustain based upon a given probability ofbreakage and load duration.(1) DiscussionMultiplying the non-factored loa
40、d (NFL) from figures in Annex A1 by the relevant GTF and load share (LS)factors gives the LR associated with a breakage probability less than or equal to 8 lites per 1000.3.2.8.3 long duration load, nany load lasting approximately 30 days.(1) DiscussionFor loads having durations other than 3 s or 30
41、 days, refer to Table X4.1.3.2.8.4 non-factored load (NFL)three second duration uniform load associated with a probability of breakage less than orequal to 8 lites per 1000 for monolithic AN glass as determined from the figures in Annex A1.3.2.8.5 short duration load, nany load lasting 3 s or less.3
42、.2.8.6 specified design load, nthe magnitude in kPa (psf), type (for example, wind or snow) and duration of the load givenby the specifying authority.3.2.9 load share (LS) factor,factor (LSF), na multiplying factor derived from the load sharing between the double glazing, ofequal or different thickn
43、esses and types the portion of applied load going to a particular lite in consideration in a sealed IG unit,whether the lite be monolithic glass or LG (including the layered behavior of LG under long duration loads), in a sealed IGunit.loads).3.2.9.1 DiscussionThe LS factor LSF is used along with th
44、e GTF and the NFL value from the NFL charts to give the LR of the IG unit, based onthe resistance to breakage of one specific lite only.3.2.10 patterned glass, nrolled flat glass having a pattern on one or both surfaces.3.2.11 probability of breakage (Pb), nthe fraction of glass lites or plies that
45、would break at the first occurrence of a specifiedload and duration, typically expressed in lites per 1000.3.2.12 sandblasted glass, nflat glass with a surface that has been sprayed by sand or other media at high velocities to producea translucent effect.3.2.13 specifying authority, nthe design prof
46、essional responsible for interpreting applicable regulations of authorities havingjurisdiction and considering appropriate site specific factors to determine the appropriate values used to calculate the specifieddesign load, and furnishing other information required to perform this practice.3.2.14 w
47、ired glass, nflat glass with a layer of wire strands or mesh completely embedded in the glass.4. Summary of Practice4.1 The specifying authority shall provide the design load, the rectangular glass dimensions, the type of glass required, and astatement, or details, showing that the glass edge suppor
48、t system meets the stiffness requirement in 5.2.4.4.2 The procedure specified in this practice shall be used to determine the uniform lateral LR of glass in buildings. If the LRis less than the specified load, then other glass types and thicknesses may be evaluated to find a suitable assembly having
49、 LR equalto or exceeding the specified design load.4.3 The charts presented in this practice shall be used to determine the approximate maximum lateral glass deflection. AppendixX1 presents additional procedures to determine the approximate maximum lateral deflection for a specified load on glass simplysupported on four sides.5. Significance and Use5.1 This practice is used to determine the LR of specified glass types and constructions exposed to uniform lateral loads.5.2 Use of this practice assumes:5.2.
