PAGE 1 OF One of the design requirements of glass used in buildings is to resist the loads created by wind and snow. ASTM E to the French and ASTM standard, that in some cases admit a lower design thickness for glass, then for the same . NF P  ASTM E – Glass strength evaluation prior to ASTM E Twelve U.S. glass thickness designations were covered from millimetre to millimetre.
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For insulating glass units, this practice only applies to insulating glass units with four-sided edge support. The forced constant amplitude, fixed frequency tension oscillation test specified in Table 1 and Fig. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Glass may be manufactured thicker than those minimums. Originally approved in These minimum glass thicknesses are presented in Table 4. Please copy and paste this embed script to where you want to embed Embed Script.
Current edition approved May 1, By joining you are opting in to receive e-mail. It’s easy to join and it’s free. Appendix X1 provides additional procedures to determine maximum lateral astmm for glass simply supported on four sides. The NFL charts were developed using a failure prediction model for glass 4, 5.
ASTM E – 12 Standard Practice for Determining Load Resistance of Glass in Buildings
Rigorous engineering analysis that accounts for the geometrically nonlinear performance of glass lites, glass surface condition, residual surface compression, surface area under stress, geometry, support conditions, load type and duration, and other relevant parameters can result in other type factors. The windows are being checked for wind loads only. To convert, multiply asgm LR by the factor in Table X4.
Similarly the LS factor for Lite No. Effective thickness for deflection: The values given in parentheses are awtm mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
Active view current version of standard. The Eng-Tips staff will check this out and take appropriate action. D Practice for Plastics: This is due to sealed air space pressure differences caused by changes in: Home E – 12ae1 E – 12ae1 September 14, Author: Report “E – 12ae1”.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Will this window glass support a 1. Therefore the LR of the IG is: Significance and Use 5.
E 1300 – 12ae1
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. This includes trapezoids, circular, triangular, and other odd shapes. This practice assumes that 1 the supported asfm edges for two, three, and four-sided support 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.
The final thickness and type of glass selected also depends upon a variety of other factors see 5. The glass gets stiffer as it deflects. Approximate Center of Glass Deflection Determination in Asrm Units—Determine the approximate center of glass deflection associated with a vertical by by 6-mm rectangular glass plate subjected to a uniform lateral load of 1.
This leaves a short term duration LR for the IG unit of: Complete discussions of the formulation of the model are presented elsewhere 2, 3.
ASTM Ea – Glass engineering – Eng-Tips
The proposed laminate construction is 10 mm glass 1. If the charts are used to predict the strength of freshly manufactured glass, the results may be conservative. Download Now Defense manufacturing is all about project manufacturing and project accounting.
The NFL is thus found to be 2. Join astn peers on the Internet’s largest technical engineering professional community.
The shear modulus value shall be determined following Practice D Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Determine if the skylight will support a 6. This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves.
Size px x x x x See Appendix X3 for basis of these values.
This includes applications where the glass is not supported on one or more edges.