Table 2 (Concluded) 



Date(s) Construction and Rehabilitation History 



1981 The breakwater was repaired between sta 11+00 and sta 20+00. One 

 layer of uniformly placed 7.5-ton tribars extended from sea-side 

 toe to crown on a 1 V : 1 . 5H slope. The tribar toe was buttressed 

 with a single row of 8- to 12-ton stone, and concrete ribs were 

 constructed on the crown (Section B-B, Figure 1). The design was 

 based on a 15.5-ft water depth, a breaking wave height of 13.5 ft, 

 and a K D of 7.5. Excess tribars were stockpiled in a single 

 layer on the seaside of the breakwater shoreward of the repair 

 site. 



1984 During a 2 August inspection by US Army Engineer Waterways Exper- 

 iment Station (WES) personnel, it was noted that the tribars 

 seemed to be on a steeper than 1V:1.5H slope in some areas. Mo 

 broken armor units were seen during the inspection. Inspection 

 only went to sta 40+00, but just beyond the tribar repair area 

 damage to upper sea-side slope and crown armor stones was noted in 

 a couple of areas. The tribar repair is in good condition. The 

 old armor stone structure is in need of some repair and will con- 

 tinue to need repair as long as the repair work continues to be 

 done with the original size armor stone. Although the maximum 

 wave heights that the structure has seen are unknown, it is 

 exposed to large wave conditions on a reqular basis. 



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