Table 6 



East and West Breakwaters, Kahulul Harbor 



Kahulul, Maui, Hawaii 



POD, POH 



Date(s) Construction and Rehabilitation History 



1931 Construction of 2,766-ft east breakwater and 2,315-ft west 

 breakwater; armor stone. 



1956 Repair of breakwater heads and 250 ft of west breakwater trunk; 

 concrete monoliths poured on crests of heads; two layers of 

 33-ton unreinforced tetrapods (400 units total) placed on 

 slopes of heads and sea-side slope of west breakwater trunk. 



1958 Emergency repair of breach in east breakwater trunk; armor stone. 



1966 Repair of both breakwater heads and first 355 ft shoreward of 

 east breakwater head; one layer of 35-ton tribars placed and 

 overlaid with one layer of 50-ton tribars on inboard quadrants 

 of the breakwater heads; two layers of 35-ton tribars placed on 

 sea-side slope of the east breakwater head and buttressed 

 against concrete rib cap constructed on the crest; 827 and 181 

 35-ton reinforced tribars placed on east and west breakwaters, 

 respectively; 43 and 173 50-ton reinforced tribars placed on 

 east and west breakwaters, respectively. Except for concrete 

 rib cap, all repair work model tested (Jackson 1964). 



1969 Repair of west breakwater trunk; two layers of 19-ton reinforced 

 tribars (260 units) placed on sea-side slope shoreward of 

 tetrapod armor area. Concrete rib cap added to crest for 

 buttressing of the tribars (repairs not model tested) . 



1973 Repair of west breakwater trunk; area rehabilitated in 1969 



repaired and extended slightly using 80 19-ton reinforced tri- 

 bars; 25 35-ton reinforced tribars placed adjacent to and on 

 shoreward end of this area. Acute angle of wave attack 

 occurring in this area tended to displace 19-ton tribars shore- 

 ward, and 35-ton tribars added as a buttress for the smaller 

 units (repairs not model tested) . 



(Continued) 



NOTE: Design Storm Conditions. 18-sec, 34-ft breaking waves (l-in-25-year 

 occurrence) . 



Maximum Storm Condition Exposure. Observed design conditions in 1947 

 and again in 1954; thereafter, no recorded observations but design 

 conditions probable. 



