Design Criteria by Zip Code

Regarding this service: This website returns the values of windspeed, groundsnow and seismic for the continental United States per ASCE 7-05. The information reflects the ASCE 7-05 maps electronically to speed up critical design project information and displays easily for your convenience. Your searches are archived in your profile.

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Windspeed Contour Lines


90		100		110		120		130		140		150

( Wind speed in MPH )

	Hatched Areas
	Special Wind Area Contact the local building official for design windspeed information.
	» CA, OR & WA are 85mph

* 3-second gust basic wind speed derived from figure 6-1 of ASCE 7-05. Local codes and ammendments may govern,verify with local building department.

This site was developed by Johannessen & Leone Associates - Structural Engineering and Inspections.
Contact us by email or call 215-853-2634