





E 









5EA SIDE 







HARBOR SIDE 









I 



32' 



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. iV p 



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\^\T3^ : " ™=> E t 







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„LW 









x \\ i ^/co=- 



.5 TOO 





/^ ,- 1 



TONS 



' <, 



Jxn! ^W^x^ 5 





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Figure 21. Plan 4, King Harbor stability study 



placing "A" Stone from the crown to +10 ft mllw, and "A-l" Stone from +10 to 

 -10 ft mllw. The layer of smaller stone was placed to filter energy trans- 

 mitted through the breakwater. The crown height remained at +20 ft mllw, and 

 the harbor-side toe buttress was the same as in previous plans. 



40. The structure was subjected to three wave heights (13, 16, and 

 20 ft) for a 16 -sec period at +7.0 ft mllw prior to checking stability with 

 the 12 design conditions to determine if the structure lowered transmission to 

 an acceptable level. The transmission coefficients, listed in Table 7, were 

 higher than desired by SPL; therefore, stability tests were not conducted for 

 this plan (see Appendix A, Figure A4 for a nondimensional plot of K t ) . 



Table 7 

 Plan 4 Wave Heights. Initial Test 



T 

 sec 



16 

 16 

 16 



ft 



14.1 

 17.0 

 22.2 



(H ).** 



ft 



13.4 

 15.9 

 20.9 



(H mo )tt 

 ft 



2.3 

 2.8 

 4.3 



Kttt 



0.17 

 0.18 

 0.20 



* Incident wave height at the wave board. 



** Incident wave height at the structure. 



\ Transmitted wave height approximately 350 ft behind the structure, 



ft Transmission coefficient, (H mo ) i /(H mo ) t . 



30 



