Table 1 



East and West Stub Breakwaters 



Haleiwa Small-Boat Harbor, Oahu, Hawaii 



Date(s) 

 1975 



1978 



Construction and Rehabilitation History 



1984 



The 80-ft-long west and 110-ft-long east breakwaters were added to 

 the existing project at a cost of approximately $150,000 (Fig- 

 ure 1). The armor stone on the east and west breakwaters (Fig- 

 ure 2) was designed for 6- and 4-ft nonbreaking waves, 

 respectively. 



The head of the west breakwater was rebuilt. Failure of the 

 original head was thought to be due to the original structure toes 

 not being placed on a firm foundation, thereby resulting in under- 

 mining of the toe and slippage of the armor stone layer. The head 

 was rebuilt with the same size armor stone; but the sand was ex- 

 cavated, and the toe was placed on a firm coral bottom. 



Inspection of the stub breakwaters in July revealed that both 

 structures were in good condition. 



Figure 1. Haleiwa Small-Boat Harbor, Oahu, Hawaii 



