Figure 11. Sea-side view of instrumented recurved seawall face 



for a l4-sec, 11.4-ft breaking wave at an swl of 8.6 ft msl. Average second- 

 ary wave pressures on the modified recurved seawall are listed in Table 7. 



49. It was anticipated that further information concerning the magni- 

 tudes and durations of the shock pressures would be needed to accomplish final 

 design of the seawall. Therefore, in an effort to provide a temporal distri- 

 bution of the shock pressures, further data analysis was carried out with test 

 results of Plans R4S2 and R4S3. Pressure records for the 12- and 14-sec waves 

 at +8.6 ft swl were reanalyzed at each transducer location, and nine data sam- 

 ples, distributed as shown below, were obtained for each wave condition. 



Samole 



Time Rel 

 Peak 



ative to 

 , sec 



Sample 

 Mo. 



Time Rel 

 Peak 



ative to 

 , sec 



Mo. 



Model 



-0.100 

 -0.040 

 -0.020 

 -0.005 

 0.000 



Prototype 



-0.500 

 -0.200 

 -0.100 

 -0.025 

 0.000 



Model 



0.005 

 +0.020 

 +0.040 

 +0.100 



Prototype 



1 



2 

 3 

 4 

 5 



6 

 7 

 8 

 9 



0.025 

 +0.100 

 +0.100 

 +0.500 



27 



