L^Lp = linear scale of the model 



S a = specific gravity of an individual armor unit relative to the 

 water in which it was placed, i.e., S a = Y«/Y w 



Test Equipment and Facilities 



All tests were conducted in a concrete wave flume 3 ft wide and 150 ft 

 long (Figure 2). A IV on 100H slope, representative of the existing prototype 

 sea bottom, was molded Gulfward of the test section. Irregular waves were 

 generated by a hydraulically actuated piston-type wave machine. The test 

 section was installed approximately 84 ft from the wave board. 



Wave data were collected on electrical capacitance wave gauges. Wave 

 signal generation and data acquisition were controlled using a DEC 

 Micro Vax I computer. Wave data analysis was accomplished using a DEC 

 VAX 3600. 



Chapter 2 The Model 



