Table 26 (Concluded) 



Date(s) 



1981 

 (Cont) 



Construction and Rehabilitation History 



1985 



required an estimated 66,900 tons of class "A" stone, 104,000 tons of 

 class "B", 40,300 tons of core stone, and 10,500 tons of bedding 

 stone. Class "A" stone had a minimum weight of 7.0 tons and an aver- 

 age weight of 9.3 tons; class "B" stone had a minimum weight of 

 4.2 tons and an average weight of 5.6 tons. All weights were based 

 on a unit weight of 170 pcf. Stone placement during construction was 

 not as precise as desired due to inexperience of the contractor. 

 However, the stones were sufficiently overweight that the Jetties 

 should be stable. 



The harbor and cross sections of the jetties are illustrated in 

 Figure 57. The jetties are in good condition at this time. 



Figure 57. Site layout of Nehalem Bay, Oregon (revised 1979) 



125 



