Desi gn Problem Physical Environment 



Page no : 



Calculated by: 

 Checked bv: 



Date 



3/ of 1ZZ 



J. R. iV. 



6 liar. 73 



Wave Conditions on &qlj Side of Island (cont) 

 Frequenc L j Anal g s'is 



Ntnd Data Wind roses -for Hie Delo wore doy 

 area are given on ttie next page. Assume 

 that sizeable v^aves occur primarily whan 

 v^ind is blowing along central radial 

 from NIN. This is the predominant wind 

 direction for the De la wo re day area, 

 wind is from ihe NW. approximately /6% 

 of the time. 



The maximum observed wind in 

 16 years of record was o 70 mph gale 

 from the NW (daily ma^Limum 5 minute 

 wind speed) 



Thomas Fastest- Mile -Nind Frequenc q 



In the absence of tabulated wind data 

 (other than that given on the following 

 page) the wind speed frequencies of 

 Thorn J adjusted for wind direct ionj i\'iil 

 be used. Thqm'i wind speed frequencies 

 ore multiplied by o.1(> to adjusf for 

 direction. This assumes that winds from 

 the NW are distributed the same as ore 

 winds ^hen all directions ore considered- 



Thorn's Wind Speeds - Delav^gre Rag Area 



Ref. 14- 



Ref 8 



*■# 



* Adjusted for direction (coLZ divided b(j 0.16) 

 Extreme fastest -mile- wind 



8-31 



