The design software I use requires ASCE 7-05 wind speed as an input.
2% will make a difference due to a cost competitive field.
If I use ASCE 7-05 wind speed from ATCouncil I do not get the added benefit of the new contour wind lines.
That is why I need to convert the ultimate speed back to...
ASCE 7-10 and the 2012 IBC use ultimate wind speeds
In ASCE 7-10 "Table C26.5-6" shows that to convert 7-10 speeds to 7-05 speeds, you divide the 7-10(ultimate speed) by sq.rt. 1.6
In IBC 2012 the equation provided to convert to Vasd, is to multiply the 7-10(ultimate speed) by sq.rt. 0.6
Am I...
