Figure 80-A. Isotachs showing fastest mile of wind (in mUes per hour) 30 feet above 

 ground, 50-year period of recurrence (from ASCE Paper 6038, Journal 

 of Structural Division, July 1968). 





60 





50 



<x 



o 



^ 



o 









» 40 



3 





tf> 





(A 





a> 



*" 30 









a> 



>» 



O. 







o 



^ 20 











0> 



o 



> 



a. 





10 









— I ^ — — I 1 r — T 1 — 



For use in determing design wind stress on 

 smoll-croft berthing systems, and buildings 

 only. These wind speeds ore not to be used 

 to determine the design waves 



Small-Craft Silhouette, K= 1.56 



O^-iO" Fiat Roofed 

 House, K= 1.40 



40 60 80 



Wind Velocity, V, in Miles Per Hour 



Wind Velocity Versus Wind Pressure 



Figure 80-B. Windloading against a vertical face. 



120 



134 



