Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE fHTion Data 



-.ntered) 





REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



Technical Report CERC-85-12 



2. GOVT ACCESSION NO. 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand Subtitle) 



SEAWALL AND REVETMENT STABILITY STUDY, CAPE 

 HATTERAS LIGHTHOUSE, NORTH CAROLINA 



5. TYPE OF REPORT 4 PERIOD COVERED 



Final report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfaJ 



Peter J. Grace 

 Robert D. Carver 



8. CONTRACT OR GRANT NUMBERfs) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



US Army Engineer Waterways Experiment Station 



Coastal Engineering Research Center 



PC Box 631, Vicksburg, Mississippi 39180-0631 



10. PROGRAM ELEMENT PROJECT. TASK 

 AREA 4 WORK UNIT NUMBERS 



M. CONTROLLING OFFICE NAME AND ADDRESS 



US Army Engineer District, Wilmington 

 PO Box 1890, Wilmington, North Carolina 28402 

 The National Park Service, Southeast Regional 

 Office, US Department of the Interior 

 Atlanta, Georgia 30349 



12. REPORT DATE 



December 1985 



13. NUMBER OF PAGES 



2k8 



15. SECURITY CLASS, (ol Ihla report) 



Unclassified 



14. MONITORING AGENCY NAME a AODRESSf//. d(«oron( from Controlling Ollica) 



ISo. DECLASSIFI CATION/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION ST AT EMEHT (ol thl a Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abelracl entered In Block 20, It dlflerenl horn Report) 



18. SUPPLEMENTARY NOTES 



Available from National Technical Information Service, 5285 Port Royal Road, 

 Springfield, Virginia 22161 



19. ICEY WORDS (Continue on reverae aide It naceaaary and Identity by block number; 



Armor stone Seawalls 

 Cape Hatteras Stapods 

 Hydraulic models Water Waves 

 Revetments Wave pressures 



20. ABSTRACT rCortfilu. <n r.v.rM aiOa H n^<re^amry and Identity by block numb.r; 



A two-dimensional model investigation was conducted to provide input for 

 the design optimization of a seawall-revetment shore protection system pro- 

 posed for long-term protection of the lighthouse at Cape Hatteras, North Caro- 

 lina. The specific purposes of this investigation were as follows: 



a. Tests were performed to determine the most severe wave con- 

 ditions relative to the stability of the seawall and stone 



(Continued) 



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1473 



EDtTlOM OF I MOV 6S IS OBSOLETE 



Unclassified 



SECURITY CLASSIFICATION OF THIS PA'.E fmren Data Entered) 



