PREFACE 



Authority to carry out this survey was granted the US Army Engineer 

 Waterways Experiment Station (WES) Coastal Engineering Research Center (CERC) 

 by the Office, Chief of Engineers (OCE) , US Army Corps of Engineers, under the 

 Repair, Evaluation, Maintenance, and Rehabilitation (REMR) Research Program 

 Civil Works Research Work Unit 32278, "Rehabilitation of Rubble-Mound Struc- 

 ture Toes." 



The survey of field experience, which fulfills one milestone of this 

 work unit, was conducted under the general direction of Messrs. John R. Mikel 

 and Bruce L. McCartney 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 Problem 

 Area Monitor, OCE; and Mr. William F. McCleese, REMR Program Manager, WES. 

 The survey was carried out by personnel of CERC, WES, under general super- 

 vision of Dr. James R. Houston, Chief, CERC, and Mr. Charles C. Calhoun, Jr. , 

 Assistant Chief, CERC; and under direct supervision of Messrs. C. E. Chatham, 

 Chief, Wave Dynamics Division, and D. D. Davidson, Chief, Wave Research Branch 

 and REMR Coastal Problem Area Leader. Visitations to the US Army Corps of 

 Engineers division and district offices to acquire survey data were made by 

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

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

 Baumgartner, and Frank E. Sargent, Hydraulic Engineers; Messrs. Willie G. 

 Dubose and Maury S. Taylor, Engineering Technicians; Mr. John M. Heggins, 

 Computer Assistant; and Mrs. Lynette W. O'Neal, Engineering Aide, during the 

 period February 1984 through October 1985. Review of the field experience 

 data and preparation of this report were carried out by Mr. Markle. This 

 report was edited by Ms. Shirley A. J. Hanshaw, Information Products Division, 

 Information Technology Laboratory. 



CERC would like to thank the personnel of the US Army Corps of Engineers 

 division and district offices contacted and visited during this survey. The 

 timely and thorough completion of this study would not have been possible 

 without the outstanding assistance and information provided by these 

 individuals. 



Commander and Director of WES during publication of this report was 

 COL Dwayne G. Lee, CE. Technical Director was Dr. Robert W. Whalin. 



1 



