All of Windloadcalc.com’s programs strictly follow the wind load calculation criteria of the ASCE 7 guidelines. The ASCE 7 is the standard for the world! All of the IBC formulas are from ASCE 7 and you will also find that any other country also references these guidelines. This is the reason the BOD of Windloadcalc.com have chosen to follow ASCE for all wind load calculations for every type of structure. You will find our wind load calculations the more precise than our customers. This is due to our structure of programming. The next best thing would be to do it by hand, but we all know that takes too long. Which is why we are here. To help you get accurate wind load pressures extremely fast.