Unclassified 
SECURITY CLASSIFICATION OF THIS PAGE 
Form Approved 
REPORT DOCUMENTATION PAGE GRIBINGHOSO4-07b8 
1a. REPORT SECURITY CLASSIFICATION 1b. RESTRICTIVE MARKINGS 
Unclassified 
2a. SECURITY CLASSIFICATION AUTHORITY 3. DISTRIBUTION / AVAILABILITY OF REPORT 
Approved for public release; distribution 
2b. DECLASSIFICATION / DOWNGRADING SCHEDULE unlimited. 
4. PERFORMING ORGANIZATION REPORT NUMBER(S) 5. MONITORING ORGANIZATION REPORT NUMBER(S) 
Technical Report REMR-CO-3 
6a. NAME OF PERFORMING ORGANIZATION 6b. OFFICE SYMBOL 7a. NAME OF MONITORING ORGANIZATION 
USAEWES, Coastal (if applicable) 
Engineering Research Center 
6c. ADDRESS (City, State, and ZIP Code) 7b. ADDRESS (City, State, and Z/P Code) 
PO Box 631 
Vicksburg, MS 39181-0631 
8a. NAME OF FUNDING/SPONSORING 8b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 
ORGANIZATION Ys Army (If applicable) 
Corps of Engineers 
8c. ADDRESS (City, State, and ZIP Code) 10. SOURCE OF FUNDING NUMBERS 
PROGRAM PROJECT TASK WORK UNIT 
Washington, DC 20314-1000 ELEMENT NO. NO. NO. ACCESSION NO. 
See reverse 
11. TITLE (Include Security Classification) 
Case Histories of Corps Breakwater and Jetty Structures; Report 9: Southwestern Division 
12. PERSONAL AUTHOR(S) 
argent, Francis E.; Bottin, Robert R., Jr. 
13a. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT (Year, Month, Day) 15. PAGE COUNT 
Report 9 of a series FROM _Jul 86 TO Oct 86 _ January 1989 
17. COSATI CODES 
GROUP SUB-GROUP 
See reverse 
19, ABSTRACT (Continue on reverse if necessary and identify by block number) 
This report is ninth in a series of case histories of US Army Corps of Engineers 
(Corps) breakwater and jetty structures at nine Corps divisions. Herein, case histories are 
presented for 12 breakwater and jetty structures located within the US Army Engineer Divi- 
sion, Southwestern (SWD), along the Texas gulf coast. Presently, there are 4 breakwaters 
and 19 jetties managed by SWD with a cumulative length of over 176,000 ft. These structures 
are predominantly of rubble-mound construction. Concrete caps have been used on the 
projects, but since 1960 a fairly consistent cross section of stone only has been used on 
new and existing projects. The peak period of construction occurred from 1962 to 1966 when 
three projects were completed and six received major rehabilitations. Although wave forces 
may be the principal cause of structure deterioration, scour and undermining also appear to 
be significant. 
20. DISTRIBUTION / AVAILABILITY OF ABSTRACT 21. ABSTRACT SECURITY CLASSIFICATION 
CA) UNCLASSIFIED/UNLIMITED (CL) SAME AS RPT CJ otic USERS ; 
22a. NAME OF RESPONSIBLE INDIVIDUAL 22b. TELEPHONE (Include Area Code) | 22c. OFFICE SYMBOL 
DD Form 1473, JUN 86 Previous editions are obsolete. SECURITY CLASSIFICATION OF THIS PAGE 
Unclassified 
