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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The forced constant amplitude, fixed frequency tension oscillation test specified in Table 1 and Fig. Determination and Report of Procedures.
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These effective thickness values can be used with standard engineering formulae or finite element methods for calculating both deflection and glass stress of laminates subjected to load.
Your comments are invited either for revision of this ashm or for additional standards and should be addressed to ASTM International Headquarters. The selection of the surface flaw parameters was based upon the best available data and engineering judgment.
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ASTM E – 12 Standard Practice for Determining Load Resistance of Glass in Buildings
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. These flaw parameters represent the surface strength of e11300-12 window glass that has undergone in-service conditions for approximately 20 years.
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 e300-12 with Table 1. 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.
Home E – 12ae1 E – 12ae1 September 14, Author: The shear modulus value shall be determined following Practice D An approximate allowable edge stress value for a 3-s duration can be found in Table X7. Active view current version of standard. 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.
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The proposed laminate construction is 10 mm glass 1. The actual thickness of the glass is 0.
Report “E – 12ae1”. Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
The values given in parentheses are for mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 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.
E 1300 – 12ae1
Appendix X1 provides additional procedures to determine maximum lateral deflection for glass simply supported on four sides. Minimum Thickness, mm in. In development of the NFL charts presented in upper charts of Zstm. Permission rights to photocopy the standard may also be secured from the ASTM website www. Will this window glass support a 1. The PE I usually work with in regards to glass, had a medical event he has since recovered from. The actual thickness of the glass is 5. 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.
We need your help! Please fill this form, we will try to respond as soon as possible. NOTE 1—This practice does not address aesthetic issues caused by glass deflection.
Similarly the LS factor for Lite No. The question in specifics is in regards to the caution stated in X1. The maximum allowable stress allowable is a function of area Aload duration in seconds dand probability of breakage Pb.
Effective thickness for stress: Thanks for your consideration and time. Therefore the LR of the IG is: