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SECURITY CLASSIFICATION OF THIS PAGE 



REPORT DOCUMENTATION PAGE 



form Approved 

 0MB No 0704-0188 

 Exp Date lun 30. 1986 



la REPORT SECURITY CLASSIFICATION 

 Ilnplassified 



lb RESTRICTIVE MARKINGS 



2a SECURITY CLASSIFICATION AUTHORITY 



2b. DECLASSIFICATION /DOWNGRADING SCHEDULE 



, DISTRIBUTION/AVAILABILITY OF REPORT 



Approved for public release; distribution 

 unlimited. 



4 PERFORMING ORGANIZATION REPORT NUMBER(S) 



Technical Report CERC-88-1 



5. MONITORING ORGANIZATION REPORT NUMBER(S) 



6a. NAME OF PERFORMING ORGANIZATION 



USAEWES, Coastal Engineering 

 Research Center 



6b OFFICE SYMBOL 

 (tf applicable) 



7a. NAME OF MONITORING ORGANIZATION 



6c. ADDRESS (0(y, State, and ZIP Code) 



PO Box 631 



Vicksburg. MS 39180-0631 



7b. ADDRESS (City, State, and ZIP Code) 



Ba. NAME OF FUNDING /SPONSORING 

 ORGANIZATION ^g ^^^^ 



Engineer District, Norfolk 



8b OFFICE SYMBOL 

 (If applicable) 



9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 



Intra-Army Order No. AD-86-3018 



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



803 Front Street 

 Norfolk, VA 23510-1096 



10 SOURCE OF FUNDING NUMBERS 



11 TITLE (Include Security Classification) Coastal Engineering Studies in Support of Virginia Beach, 

 Virginia, Beach Erosion Control and Hurricane Protection Project; Report 1: Physical Model 

 Tests of Irregular Wave Overtopping and Pressure Measurements 



12 PERSONAL AUTHOR(S) 



Heimbaugh, Martha S. 



Grace, Peter J.; Ahrens, John P.; Davidson. D. Donald 



13a TYPE OF REPORT 



Final report 



13b TIME COVERED 

 FROM 



TO 



14 DATE OF REPORT (Year, Month, Day) 

 March 1! 



15 PAGE COUNT 

 138 



16. SUPPLEMENTARY NOTATION 



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

 VA 22161. 



17 



COSATI CODES 



FIELD 



GROUP 



SUB-GROUP 



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



Irregular waves Seawalls Wave pressures 



Physical models Virginia Beach 

 Riprap berm Wave overtopping 



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



A two-dimensional (2-D) physical model investigation was conducted at scales of 1:13 

 and 1:19 (model to prototype) to provide input for the design optimization of a seawall 

 proposed for long-term storm protection at Virginia Beach, Virginia. This was one of a 

 number of tasks conducted in support of the detailed design of a beach erosion control and 

 hurricane protection project at Virginia Beach. The 2-D tests were conducted to acquire 

 data on the expected rate of overtopping for two design storm types (hurricane and north- 

 easter) at selected still-water levels, determine a stable stone size for a proposed 

 fronting riprap berm, and to determine the distribution of wave-induced pressures on the 

 face of the seawall. 



As a result of the 2-D tests, a stable stone size was determined for the proposed 

 fronting berm, and overtopping rates were measured. An improved seawall design was 



(Continued) 



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ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



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DD FORM 1473, 84 mar 



83 APR eciition may be used jntil exhausted 

 All other editions are obsolete 



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