Test conditions selected by the Research Division for testing are listed 

 in Table 7 as Tests 1 through 30. The selected tests were separated into 

 groups with similar water depths to allow multiple tests to be conducted 

 without changing water level in the wave flume. Table 7 also lists the ac- 

 tual test conditions used. The wave generator in the 18-in. flume was un- 

 able to produce the wave conditions for Tests 1 and 6; therefore, these 

 tests were eliminated from the test series. Tests 25 and 26 were identical 

 after adjusting the water level; therefore. Test 26 was deleted. The remain- 

 ing tests were completed. 



It was desired to perform a multiple regression analysis on the results 

 of the tests to obtain a relationship among overtopping rate, wave height, 

 wave period, and still-water level. Eight additional tests therefore were 

 conducted to provide a better range of test conditions on which to base the 

 analysis. The additional test conditions are shown in Table 7 as Tests 31 

 through 38. 



At the conclusion of Task C, the Research Division asked that storm 

 conditions selected from the SPN be tested with the 1978 profile. These 

 additional tests were analyzed separately from Task C, and are therefore 

 referred to in this report as Task C+. Six conditions representing peak 

 hours of the storm were selected for testing. The wave generator in the 

 18-in. flume was unable to produce the wave heights at these conditions; 

 therefore, tests were conducted at the highest obtainable H^g for the given 

 swl and T Conditions tested and results are given in Table 7 as Tests 39 

 through 44. 



Results 



Results of the test series are given in Table 7. 



Regression Analysis 



Purpose 



Regression analysis was performed on results of the physical model 

 tests to determine relationships among overtopping rates, swl, and wave 

 conditions. Regression analysis was conducted on results of Task B for 

 the bore runup overtopping module. Task C (without C+, Tests 39 through 

 44) for the broken wave overtopping module, combined results of tasks A, 

 C, and C+ for a "worst case" analysis, and on the entire set of tests. The 

 Statistical Analysis System (SAS), version 6.04, was used for the analysis. 



28 



Chapter 3 Research Tasks A, B, and C 



