Unclassified 



SECURITY CLASSIFICATION OF THIS PAGEfW?i«n Data Entered) 



20. ABSTRACT (Continued). 



b. Determine the degree of breakwater damage that could occur in Plan 1 

 for a storm condition that exceeds the design condition. 



c. Determine the maximum nonbreaking wave heights for which the exist- 

 ing 2-ton dolos design (Plan 2) and the proposed 4-ton dolos and 9- 

 to 20-ton armor stone designs (Plan 3) could be considered to be 

 adequately designed. 



Test results indicated that Plan 1 was only marginally acceptable and 

 would most likely require significant amounts of maintenance if exposed to 

 design level wave conditions (7.0- to 9.0-sec, 13.4-ft nonbreaking waves at an 

 swl of +4.9 ft low water datum (lwd)). Plan 1 also proved to be a very inade- 

 quate design for wave conditions exceeding the design conditions (7.0- to 

 9.0-sec, 15.0-ft nonbreaking waves at an swl of +4.9 ft lwd). Plans 1, 2, and 

 3 proved to be adequate designs for 7.0- to 9.0-sec, 12.0- , 10. 5-, and 13.4-ft 

 nonbreaking waves, respectively, at an swl of +4.9 ft lwd. 



Unclassified 



SECURITY CLASSIFICATION OF THIS P *GE(m,en Data Entered) 



