E − A The probability of breakages for Lite No. 1 and Lite Pb2 = e No. 2 for the load carried by each are as follows: A Conclusion— The. ASTM E – 12ae1. Standard Practice for Determining Load Resistance of Glass in Buildings. Active Standard ASTM E | Developed by Subcommittee: . Edition: 12ae1 (). Superseded by: ASTM E Check Published. Number of pages: Price: NOK 1 ,00 (excl. VAT) NOK 1 ,00 (with VAT).

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For insulating glass units, this practice only xstm to insulating glass units with four-sided edge support. If the maximum lateral deflection falls outside the charts in Annex A1, then use the procedures outlined in Appendix X1.

E 1300 – 12ae1

Minimum Thickness, mm in. For aspect ratios greater than 5, use 5.

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.

This is due to sealed air space pressure differences caused by changes in: Lateral Deflection Calculation in SI Units Using Method X2—Determine the maximum lateral deflection w of a vertical by by 6-mm rectangular glass plate subjected to a uniform lateral load of 1.

Read more about subscriptions. A conservative allowable surface stress value for a 3-s duration load is The benefits of a subscription: All loads are considered normal to the glass surface. Significance and Use 5. Size px x x x x We need your help to maintenance this website. Interlayer samples shall experience full laminating thermal history prior to measurement.

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Remember me for one month. To convert, multiply the LR by the factor in Table X4.

Where membrane stresses predominate, the exponent is less than 3 but this regime is outside the range of typical architectural glass design. If you need to be able to add standards to the monitoring service, you must register as a user with your own username and password. The selection of the surface flaw parameters was based upon the best available data and engineering judgment.

If the maximum lateral deflection falls outside the charts in Annex A1, then use the procedures outlined inAppendix X1. As the area of glass under a given stress increases there is an increased risk of breakage occurring. 1a2e1

If the sum of all interlayer thicknesses is greater than 1. All interlayers are viscoelastic so consideration must be given to load duration and temperature for the intended use. Report “E – 12ae1”.

ASTM-E, –

Glass may be manufactured thicker than those minimums. Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work. Current edition approved May 1, 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 ensures that you are always up-to-date and saves you both time and money. Effective thickness for stress: You need to log in before adding standards to the monitoring service. Work Item s – proposed revisions of this standard. Therefore the LR of the IG is: If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

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Note 1 This practice does not address aesthetic issues caused by glass deflection. The greater the shear resistances, the more effectively the two glass plies couple and resist deformation under loading.

ASTM E – 12ae1 Standard Practice for Determining Load Resistance of Glass in Buildings

Summary of Practice 4. 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.

Long Duration Load 30 days.

The LS factor for one ply of the laminated lite of an IG composed of: The values given in parentheses are for mathematical conversions to inch-pound units that are provided for information only and are not considered standard. Subscription – always available and updated A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.

Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. This includes trapezoids, circular, triangular, and other odd shapes.