Atmospheric Effects on
Insulating Glass Units analyses insulating glass (IG) units constructed
in one environment and transported to another. Combinations of changes in
elevation, temperature, and barometric pressure create loads on IG units.
Some loads are temporary such as those resulting from elevation changes
during transportation as well as variations in temperature and barometric
pressure. Other loads can be permanent such as final installation at a
different elevation than manufacture. This software uses finite difference
analysis, parameters consistent with those in ASTM E 1300–07, “Standard
Procedure to Determine the Load Resistance of Glass in Buildings” and
load sharing computations to determine stresses in glass lites in IG units
and, where applicable, probabilities of breakage consistent with ASTM E
1300-07. The program addresses load duration and glass in-service life in
This program references:
“Glass Failure Prediction
Model ” by W. L. Beason and J. R. Morgan, 1984.
“The Strength of
Weathered Window Glass” by H. S. Norville and J. E. Minor, 1985.
“Nonlinear Analysis of
Rectangular Glass Plates by Finite Difference Method” by C.V. G. Vallabhan
and B. Y-T Wang, 1981.
Behavior of Insulating Glass Units" by C. David Chou, Joseph E. Minor, and
C.V. Girija Vallabhan. 1986.
ASTM E 1300–07, “Standard
Procedure to Determine the Load Resistance of Glass in Buildings”