Table 8 



Pohoiki Breakwater 



Pohoiki Bay, Hawaii, Hawaii 



Date(s) 



Construction and Rehabilitation History 



A 90-ft dolos-armored structure with a concrete rib cap was con- 

 structed in 1979 at a cost of approximately $335,500 (Figure 19). 

 The structure was designed for 12-ft depth-limited breaking waves 

 at the structure. The wave condition has reportedly occurred on 

 several occasions since completion of construction, and the struc- 

 ture shows no signs of deterioration. The 6-ton unreinforced 

 dolosse (two layers) exceeded the needed weight for the design 

 conditions but were found to be more economical than a lighter 

 weight in that fewer units were needed. All existing dolosse 

 breakage (5 units) occurred during construction and were left on 

 the structure. Figure 20 is an aerial photograph of the break- 

 water taken in 1984. 



TYPICAL BREAKWATER SECTION 



UNDERLAYER 





Figure 19. Pohoiki breakwater, Hawaii, Hawaii 



36 



