CONTENTS 



TABLES - -Cont inued 



Page 



2 Major test conditions 16 



3 Laboratory and prototype situations with identical 



Froude number 16 



4 Stagnation regime and Froude number based on obstacle 



thickness in photo sequences 37 



5 Runup calculations for [W(a)/W] patterns in Figures 21, 



22, and 23 44 



6 Wave conditions and percent o£ pattern variance in Figure 25 . . 48 



7 Comparison of angles giving pile channel geometry, 9, 



half -width of front maximum region, x> and 



minimum location, 41, for Figure 31 56 



8 Calculations for [HCB)/H] patterns in Figure 34 59 



FIGURES 



1 Usual test situations. . 12 



2 Cross sections and types of piles tested I3 



3 Plan views of the two wave tanks and details of 



the pile and water level gage configurations 15 



4 Recorded incident and transformed wave forms in several 



test situations , 19 



5 Water level record and measured wave dimensions: 



Wave height, H, crest height, W, and trough depth, Q . . . I8 



6 Transformed wave dimensions versus orientation angle 



for four piles 21 



-7 Normal iz_ed average crest height around a circular 



pile [WCa)/W] for two incident crest heights 22 



8 Crest height over the 180° range of orientation angle for 



two piles 23 



9 Camera and pile configurations for photo sequences 24 



