A method for estimating the strength parameters of the Weibull distribution and the power in Brown's integral from full-scale experiments with rectangular glass panes loaded uniformly at different load rates is proposed.

Knowing the parameters, it is possible to estimate the load capacity of a glass pane subjected to any load history. Provided accurate load histories (load as a function of time during the service life) for e.g. wind and snow loads are available this enables fairly simple and very accurate estimates for the load capacity of a glass pane for different load types.

The method is applied to permanent load and Danish snow load in order to demonstrate the consequences.