CONTENTS 



FIGURES--Continued 



Page 

 6-26 Transmitted wave heights for proposed breakwater using tribar armor units 

 in the breakwater stability and transmission test, Monterey Harbor, 

 California 386 



6-27 Location map, Humboldt Bay, California 387 



6-28 L-shaped wave flume 250 feet long, 80-foot-maximum and 50-foot minimum 



width, and 4.5 feet deep 389 



6-29 Rehabilitated concrete monolith head proposed for the north jetty, 



Humboldt Bay jetty model 393 



6-30 Jetty plan after attack by 16-second, 28-foot waves, Humboldt Bay jetty 



model 395 



6-31 Jetty plan with pile barrier at station 71 + 50 after attack by 16-second, 



38-foot waves, Humboldt Bay jetty model 397 



6-32 Jetty plan after attack of 16-second, 40-foot waves with Stillwater level 



of +7 feet, Humboldt Bay Jetty model 399 



6-33 Location map and limits of l:150-scale harbor model, Indiana Harbor, 



Indiana 400 



6-34 Apparatus used to measure wave forces, Indiana Harbor breakwater model . . . 402 



6-35 l:50-scale test section, Indiana Harbor breakwater model 403 



6-36 l:55-scale east-west breakwater and proposed parapet, Indiana Harbor 



breakwater model 404 



6-37 Dimensions of proposed parapet, Indiana Harbor breakwater model 405 



6-38 Assumed wave-force distribution and equations for maximum force, Indiana 



Harbor breakwater model 405 



6-39 Force-time curve, l:50-scale Indiana Harbor breakwater model 406 



6-40 Overturning equation for parapet, Indiana Harbor breakwater model 407 



6-41 Maximum failing parapet, Indiana Harbor breakwater model 407 



6-42 l:55-scale test section with maximum failing parapet, Indiana Harbor 



breakwater model 408 



6-43 Location map of proposed seawalls, Texas City, Texas 411 



6-44 Elements of test section (plan 2), Texas City seawall model 414 



6-45 Elements of test section (plan 5B) , Texas City seawall model 414 



6-46 Elements of test section (plan 3B) , Texas City seawall model 416 



6-47 Elements of test section (plan 6), Texas City seawall model 417 



6-48 Elements of test section (plan 7), Texas City seawall model 417 



