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.
||19 August 2017
|PDF File Size:
|ePub File Size:
||Free* [*Free Regsitration Required]
Digital Transformation may be defined in e13000-12 number of different ways by analysts or enterprise software vendors. By joining you are opting in to receive e-mail. For a single monolithic lite with two surfaces equally at risk, p 5 1. These flaw parameters represent the surface strength of weathered window glass that has undergone in-service conditions for approximately 20 years. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Download Now Defense manufacturing is all about project manufacturing and project accounting. The actual thickness of the glass is 5.
E 1300 – 12ae1
As the area of glass under a given stress increases there is an increased risk of breakage occurring. Thank you for interesting in our services. Please help us to share our service with your friends.
In development of the NFL charts presented in upper charts of Fig. Therefore the AN lite probability factor becomes: These factors include but are not e1030-12 to: Download Now White Paper: If the charts are used to predict the strength of freshly manufactured glass, the results may be conservative.
This is due to sealed air space pressure differences caused by changes in: Windows I usually work with e1300-1 24 to 36 inch base dimension. An approximate allowable edge stress value for a 3-s duration can be found in Table X7. This includes applications where the glass is not supported on one or more edges.
Report “E – 12ae1”.
Current edition approved May 1, Are you an Engineering professional? Use Vallabhan and Chou 1 for alternate method.
ASTM Ea – Glass engineering – Eng-Tips
The glass thickness used for calculating load sharing factors for short duration loads is the sum of the thickness of glass of the 2 plies in accordance with Table 1. The NFL charts were developed using a failure prediction model for glass 4, 5. The LS factor for one ply of the laminated lite of an IG composed of: Is astmm able to provide some background on this caution statement or point me in the direction of which reference in the Standard I should pursue to get additional information on the caution statement?
The load sharing is then based on the individual ply thicknesses of the LG. The model allows the probability of breakage of any lite or ply to be specified in terms of two surface flaw parameters, m and k.
Generally the actual aspect ratio of the windows is between 1 and 2. These minimum glass thicknesses are presented in Table 4. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and e130012 not revised, either reapproved or withdrawn.
For these loading duration and temperature considerations the interlayer shear modulus, G, is determined to be 0. We need your help to maintenance this website. Minimum Thickness, mm in. Therefore the LR of the IG is: The NFL is thus found to be 2.
ASTM E – 12 Standard Practice for Determining Load Resistance of Glass in Buildings
We are a non-profit group that run this website to share documents. In addition, considerations set forth in building codes along with criteria presented in safety glazing standards and site specific concerns may control the ultimate glass type and thickness selection. Determination and Report of Procedures.
Note that Section 6 references a Pb less than or equal to 0. This practice assumes that 1 the supported glass 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.
Significance and Use 5. We need your help! Students Click Here Join Us! Register now while it’s still free! NOTE 2—Values are approximated. 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.
Substituting into Eq X9. This maximum calculated stress must be less than the maximum aztm stress.