Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE (When 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 EEFORE COMPLETING FORM 



1. REPORT NUMBER b GOVT ACCESSION NO. 



TR-911 1 DN787010 



3. RECIPIENT'S CATALOG NUMBER 



XSP CONE PENETROMETER: A PERFORMANCE 

 EVALUATION 



S. TYPE OF REPORT a PERIOD COVERED 



Not final; Mar 1980 - Jan 1983 



6 PERFORMING ORG REPORT NUMBER 



7. AuTHORfs; 



R M. Beard and B. A. Johnson 



8. CONTRACT OR GRANT NUMBERS} 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



NAVAL CIVIL ENGINEERING LABORATORY 

 Port Hueneme, California 93043 



10 PROGRAM ELEMENT. PROJECT, TASK 

 AREA & WORK UNIT NUMBERS 



62759N; 

 YF59.556.091.01.100 



'1 CONTROLLING OFFICE NAME AND ADDRESS 



Naval Facilities Engineering Command 

 Alexandria, Virginia 22332 



12. REPORT DATE 



October 1984 



13 NUMBER OF PAGES 



62 



14. MONITORING AGENCY NAME ft ADORESSf/f dillerenl from Controlling Ollice) 



15 SECURITY CLASS (ol this report) 



Unclassified 



15a DECLASSIFICATION DOWNGRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (ol thin Report) 



Approved for public release; distribution unlimited. 



17 DISTRIBUTION STATEMENT (ol the abstract entered in Block 20. il dillerenl from Report) 



IB SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverse side il necessary and identity by block number) 



Electric cone penetration, cone penetrometer, ocean bottom soils, seafloor geotechnical 

 properties 



20 ABSTRACT (Continue on reverse side II necessary and identity by block number) 



A lightweight seafloor soil test device has been developed that is capable of performing 

 in-situ cone penetration tests (CPT) to 40-foot sediment depth in up to 200-foot water 

 depths. This device, called the XSP (experimental static penetrometer), weighs 10,000 

 pounds and stands 50 feet tall. The water-jetting system, a unique feature, assists pene- 

 tration to greater depths than is possible with the 10,000-pound reaction force available. 



continued 



DD , j°™ 7! 1473 EDITION OF 1 NOV 65 IS OBSOLETE 



Unclassified 



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