CONTENTS 



FIGURES--Continued 



Page 



31 Values of r for slope and relative roughness (H^/k r ) 



for permeable rubble mound 71 



32 Values of r for slope and relative roughness (H^/k^) 



for permeable structure 72 



33 Impermeable structures 75 



34 Runup for riprap slopes, approximately two layers 77 



35 Values of r for slope and relative roughness (H^/k^) 



for riprap slopes; armor layer approximately two 



stones thick 78 



36 Runup curves for 1 on 1.5 riprap slope fronted by 1 on 50 



bottom slope 79 



37 Relative runup for 1 on 2 riprap slope fronted by 1 on 200 



slope 81 



38 Values of r for relative roughness (H^/k p ) , for 1 on 2 



riprap slope fronted by 1 on 200 slope 82 



39 Example of runup for 1 on 3.5 riprap slope, d /H' = 7.0, 



for various relative stone sizes 83 



40 Relative runup for riprap slopes, d„/H' = 5.0, 



Hyk r * 3.15 84 



41 Relative runup for riprap slopes, d s /U' = 8.0, 



U' /k r =2.8 " . 85 



42 Values of r for riprap slope and relative roughness (H^/k^J . . 86 



43 Concrete armor units tested by Jackson (1968a) 88 



44 Gobi blocks 93 



45 Stepped-slope runup; d g ^ 0; 1 on 1.5 structure slope; 



1 on 10 bottom slope 98 



46 Stepped-slope runup; d g =0; 1 on 1.5 structure slope; 



1 on 10 bottom slope 99 



47 Hypothetical sketch of relative runup variations (scale 



effects) on a given structure for sets of specified 



wave conditions and varying Reynolds number 106 



8 



