One of the most important variables when calculating wind load pressures is the “velocity”. The velocity for your wind load calculation can be found in the ASCE 7. All you need to do is find the location where your structure (that needs wind load pressure design values) is located on the FREE map provided and see where you are within the contour lines. You do not need to pay money for this information. These maps can be found online by just searching for “ASCE 7-10 Wind Velocity Map”. The Wind Velocity Map is also provided by Windloadcalc.com with every purchase!