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 [5] 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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If the sum of all interlayer thicknesses is greater than 1. Close this window and log in. A number in parentheses indicates the year of last reapproval. The values given in parentheses are for mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

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.

E 1300 – 12ae1

Similarly the LS factor for Lite No. This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves.

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by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.

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.

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.

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Generally the actual aspect ratio of the windows is between 1 and 2. The method applies to 2-ply laminates fabricated from both equal and unequal thickness glass plies. 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. Register now while it’s still free! Red Flag This Post Please let us know here why this post is inappropriate. Substituting into Eq X9.

Will this window glass support a 1. Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.

Polished Edges, MPa psi A conservative allowable surface stress value for a 3-s duration load is Appendix X1 provides additional procedures to determine maximum lateral deflection for glass simply supported on four sides.

All interlayers are viscoelastic so consideration must be given to load duration and temperature for the intended use. The greater the shear resistances, the more effectively the two glass plies couple and resist deformation under loading. These flaw parameters represent the surface strength of weathered window glass that has undergone in-service conditions for approximately 20 years.

Summary of Practice 4. Promoting, selling, recruiting, coursework and thesis posting is forbidden. The intent of Appendix X9 is to provide a method that allows the user to perform engineering analysis of lami- X9. Download Now Defense manufacturing is all about project manufacturing and project accounting.

The lower charts of Fig. D Practice for Plastics: 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. The Eng-Tips staff will check this out and take appropriate action.

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ASTM Ea – Glass engineering – Eng-Tips

The actual thickness of the glass is sstm. NOTE 2—Values are approximated. For aspect ratios greater than 5, use 5. The construction of two 2.

Click Here to join Eng-Tips and talk with other members! Interlayer samples shall experience full laminating thermal history prior to measurement. This includes trapezoids, circular, triangular, and other odd shapes. Windows I usually e1300-21 with are 24 to 36 inch base dimension.

Your comments are invited either for revision of this standard or for additional standards aetm should be addressed to ASTM International Headquarters. This practice shall not apply to other applications including, but not limited to, balustrades, glass floor panels, aquariums, structural glass members, and glass shelves. NOTE 4—The user is recommended to limit the combined width of both air spaces in the IG unit to less than or equal to 25 mm 1 in. Convert kPa to inch-pound units by multiplying 2.

Originally approved in The maximum allowable stress allowable is a function of area Aload ee1300-12 in seconds dand probability of breakage Pb.

Under short duration loads LG is assumed to behave in a monolithic-like manner. In development of the NFL charts presented in upper charts of Fig.

Two different effective laminate thickness values are determined for a specific case: The model allows the probability of breakage of any lite or ply to be specified in adtm of two surface flaw parameters, m and k.

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