Periodic Inspections of Kahului and Laupahoehoe Breakwaters, Hawaii
COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS
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Under the Monitoring of Completed Coastal Projects MCCP work unit, Periodic Inspections, past MCCP structures and structures with unique design aspects that have probable applications to other projects are considered for inclusion in a periodic monitoring program. The emphasis of the work is to measure the long-term response of the above-water portions of the structures to their environment. The rubble-mound breakwaters at Kahului Harbor, Maui, Hawaii, and Laupahoehoe Boat Launching Facility, Laupahoehoe Point, Hawaii, Hawaii, are armored with concrete armor unit and concrete rib caps. By means of limited land surveys, low-level helicopter inspections with 35-mm photography, aerial photography, and photogrammetric analysis base conditions have been established for the breakwaters. Now that the base control conditions have been defined and a method has been developed to closely compare subsequent years of high- resolution aerial photography of the Kahului and Laupahoehoe breakwaters, these sites will be revisited during future years to gather data by which assessments can be made on the long-term response of the structures to their environment. Insight gathered from these efforts will allow definite decisions to be made based on sound data as to whether or not closer surveillance andor repair of a structure is required to reduce the chance that it will fail catastrophically.
- Civil Engineering