Unclassified 



SECURITY CLASSIFICATION OP THIS PAGE 



REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No 07040188 

 Exp Date lun30 1986 



la REPORT SECURITY CLASSIFICATION 



Unclassified 



1b RESTRICTIVE MARKINGS 



2a SECURITY CLASSIFICATION AUTHORITY 



2b DECLASSIFICATION /DOWNGRADING SCHEDULE 



3 DISTRIBUTION /AVAILABILITY OF REPORT 



Approved for public release; distribution 

 unlimited. 



4 PERFORMING ORGANIZATION REPORT NUM8ER(S) 

 Technical Report REMR-CO-7 



5 MONITORING ORGANIZATION REPORT NUMBER(S) 



6a NAME OF PERFORMING ORGANIZATION 

 USAEWES, Coastal Engineering 

 Research Center 



6b OFFICE SYMBOL 

 (If applicable) 



7a NAME OF MONITORING ORGANIZATION 



6c. ADDRESS (City, State, and ZIP Code) 



PO Box 631 



Vicksburg, MS 39181-0631 



7b ADDRESS (Oty, State, and ZIP Code) 



8a. NAME OF FUNDING /SPONSORING 

 ORGANIZATION 



US Army Corps of Engineers 



8b OFFICE SYMBOL 

 (If applicable) 



9 PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 



8c. ADDRESS (Oty, State, and ZIP Code) 

 Washington, DC 20314-1000 



10 SOURCE OF FUNDING NUMBERS 



WORK UNIT 

 ACCESSION NO 



32328 



1 1 TITLE (Include Security Classification) 

 Methods to Reduce Wave Runup and Overtopping of Existing Structures 



12 PERSONAL AUTHOR(S) 



Ahrens, John P. 



13a TYPE OF REPORT 



Final report 



13b TIME COVERED 

 from Sep 84 to Sep 86 



14 DATE OF REPORT (Year, Month. Day) 

 October 1988 



15 PAGE COUNT 

 44 



16. SUPPLEMENTARY NOTATION 



See reverse. 



COSATI CODES 



18 SUBJECT TERMS (Continue on reverse if necessary and identify by block number) 

 Breakwaters Wave overtopping 



Revetments Wave runup 



Seawalls 



19 ABSTRACT (Continue on reverse If necessary and identify by block number) 



Problems occurring on coastal structures related to wave runup and overtopping are 

 identified and categorized. Three general problem areas include: wave runup and over- 

 topping of breakwaters and jetties causing excessive wave action on the leeside, wave runup 

 and overtopping of seawalls and bulkheads causing either flooding or erosion or both behind 

 the structures, and wave runup and overtopping of revetments jeopardizing the integrity or 

 possibly causing failure of the structure. 



A number of approaches to reducing wave runup and overtopping of coastal structures 

 is presented. Plans to use laboratory model tests to quantify and refine the most 

 promising approaches are discussed. 



20 DISTRIBUTION /AVAILABILITY OF A8STRACT 

 (3 UNCLASSIFIED/UNLIMITED □ SAME AS RPT 



□ DTIC USERS 



22a NAME OF RESPONSIBLE INDIVIDUAL 



21 ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



22b TELEPHONE (Include Area Code) 



22c OFFICE SYMBOL 



DDFORM 1473, 84 MAR 



83 APR edition may oe used until exhausted 

 All other editions ace obsolete 



SECURITY CLASSIFICATION OF THIS PAGE 



Unclassified 



