CONTENTS 



TABLES-Continued 



Page 



5 Effects of particle shape on profile shape 40 



6 Summary CERC test conditions 52 



7 Summary of scale ratios for various materials 54 



8 Test conditions for attempted model law verification 54 



FIGURES 



1 Examples of beach profile classifications 12 



2 Criterion for generation of longshore bars : 17 



3 Beach crest to bar distance 18 



4 Relationship between vertical crest to bar or step distance 



and wave steepness 19 



5 Graphical representation of model law 23 



6 Diagram of wave tank used in this study . . . ; 25 



7 Comparison of beach profiles obtained with sand having 



graded and narrow size distributions 31 



8 Typical example of the comparison of beach profiles using 



crushed PVC and PVC cylinders 32 



9 Comparison of beach profiles obtained with unimodal and 



bimodal sediment distribution having the same median 



diameter (Hq/Lq = 0.014) 33 



10 Comparison of beach profiles obtained with unimodal and 



bimodal sediment distribution having thd same median 



diameter (Hq/Lq = 0.021) 34 



11 Comparison of beach profiles obtained with unimodal and 



bimodal sediment distribution having the same median 



diameter (Hq/Lq = 0.029) 35 



12 Comparison of beach profiles obtained with unimodal and 



bimodal sediment distribution having the same median 



diameter (Hq/Lq = 0.031) 36 



