APPENDIX D 



OTHER TEST DATA 



Two other series of tests were conducted during this study. This 

 appendix discusses these test series, without a full presentation of the 

 data obtained (the complete data are available at CERC) , and presents 

 plots of previously reported data which did not survive the internal 

 consistency check. 



1. Tests with Two-Wave Trains on a Single Pile . 



Early in this study, some tests were conducted in an outdoor three- 

 dimensional wave basin. These tests were initiated primarily to investi- 

 gate scale effects on the measurements. The wave basin tests were plagued 

 by various problems, and scale effect investigations were eventually 

 completed in the 85-foot tank. However, one meaningful series of nine 

 tests was conducted which could not be duplicated in the 85-foot tank. 



Two wave generators were set to generate wave trains of 1 . 90- and 

 2.53-second periods, propagating at right angles past the test pile. 

 Because the periods were in the ratio 5:4, and the generators were ini- 

 tially in phase, the wave trains constructively interfered at the pile 

 with a 7.6-second period (see waveform in Fig. D-1). The peak wave 

 height was measured from the gage record obtained in the pile channel, 

 as the pile orientation was varied over the 360° range. Figure D-2 

 presents the patterns measured at the 1x1 and 2x2 H-piles in the same 

 two-wave test situation. (The special orientation angle ^ is defined 

 in Fig. D-2.) These two patterns closely agree. 



K-20 s-H 



Figure D-1. Water level record in test with two wave trains. 



67 



