PREFACE 



Authority to carry out this investigation was granted the US Army Engi- 

 neer Waterways Experiment Station's (WES's) Coastal Engineering Research Cen- 

 ter (CERC) by the Office, Chief of Engineers (OCE) , under Repair, Evaluation, 

 Maintenance, and Rehabilitation (REMR) Research Program Work Unit 32325, "Use 

 of Dissimilar Armor for Repair and Rehabilitation of Rubble-Mound Coastal 

 Structures." The survey of field experience, which fulfills one milestone of 

 this work unit, was conducted under general direction of Mr. James E. Crews 

 and Dr. Tony C. Liu, REMR Overview Committee, OCE; Mr, Jesse A. Pfeiffer, Jr., 

 Directorate of Research and Development, OCE; members of the REMR Field Review 

 Group; Mr. John H. Lockhart, REMR Coastal Technical Monitor, OCE; and 

 Messrs. William F. McCleese, REMR Program Manager, and D. D. Davidson, REMR 

 Coastal Problem Area Leader, WES. 



The study was conducted by personnel of CERC under general direction of 

 Dr. James R. Houston, Chief, and Mr. Charles C. Calhoun, Jr., Assistant Chief, 

 CERC; and under direct supervision of Mr. C. E. Chatham, Chief, Wave Dynamics 

 Division, and Mr. Davidson, Chief, Wave Research Branch. Visitations to the 

 US Army Corps of Engineers Division and District Offices to acquire survey 

 data were made during the period February 1984 through September 1985 by 

 Messrs. Dennis G. Markle and Robert D. Carver, Research Hydraulic Engineers; 

 John P. Ahrens, Research Oceanographer; Peter J. Grace, R. Clay Baumgartner, 

 and Frank E. Sargent, Hydraulic Engineers; Willie G. Dubose and Maury S. 

 Taylor, Engineering Technicians; John M. Heggins, Computer Assistant; and 

 Mrs. Lynette W. O'Neal, Engineering Aide. Field experience data were reviewed 

 and this report was prepared by Mr. Carver. 



Commander and Director of WES during report publication was COL Dwayne G. 

 Lee, EN. Technical Director was Dr. Robert W. Whalin. 



