Structural Glazing

The wind load depends on your location. Your local building code should provide details of how to calculate it. In most areas you will want to know the maximum wind pressure in a thirty, forty or fifty year return period. You will then apply gust factors, terrain factors, height factors etc. to come to a final pressure.

In most locations, you will likely find that the maximum wind pressure on the glass is in the order of 20 to 25 pounds per square foot, but there could be some cases where that is not enough.

Thank you,the unit of wind pressure is kg/sq.mtr.what are the factors related to this unit and How can determine width and hight of the glass (Double Glazing-6mm+12mm Air gap + 6mm),the wind pressure 166 kg/sq.mtr.

You can find many references by searching the internet for "structural design of glazing". Here is one such site.