Unclassified 



Scciirilv Classidc 



DOCUMENT CONTROL DATA R&D I 



Naval Civil Engineering Laboratory 

 Port Hueneme, California 93043 



Unclassified 





DIRECT EMBEDMENT ANCHOR HOLDING CAPACITY 



A. DESCRiPTrvE NOTES (TypB of report ar\d Inclaalvt date*} 



Not final; November 1970 - May 1972 



: AUTHonill I'F'Irilia/ns, middit Inlllml, /••! name; 



R. J. Taylor and H. J. Lee 



December 1972 



34 



19 



^..o.Ecr.o 3.1330-1 



d. 



N-1245 



»6. OTHER REPOBT NO(3l (Any olftor numbef Ihml may 6« mflgntd 

 Ihl, npofi) 



Approved for public release; distribution unlimited. 





Naval Facilities Engineering 

 Command 



Techniques for predicting the maximum uplift forces which may be 

 applied to direct embedment anchors without causing the anchor to 

 pull out are provided. This holding capacity problem is subdivided 

 into three categories: immediate breakout, long-term static load, 

 and long-term repeated load. Holding capacities under long-term 

 repeated and long-term static loading conditions are poorly under- 

 stood at present. It was therefore necessary to combine work from 

 other areas with a small amount of directly applicable work to yield 

 approximate immediate use results. For each manner of loading con- 

 sidered, two general types of seafloors are considered: cohesion- 

 less and cohesive soil. Rock is not considered in this report. 



To simplify the holding capacity prediction process, the sug- 

 gested procedure is outlined without rationale in a block diagram 

 with each item of the diagram being briefly discussed, A sample 

 problem is also presented. 



DD 



„1473 



Unclassified 



S/N 0101.807.6801 



