DIRECT EMBEDMENT ANCHOR HOLDING CAPACITY 



Technical Note N-12A5 



3.1330-1 



by 



R. J. Taylor and H. J. Lee 



ABSTRACT 



Techniques for predicting the maximiim 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 understood 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 considered, two general types 

 of seafloors are considered: cohesionless and cohesive soil. Rock Is 

 not considered in this report. 



To simplify the holding capacity prediction process, the suggested 

 procedure is outlined without rationale in a block diagram with each 

 item of the diagram being briefly discussed. A sample problem is also 

 presented. 



ted. 



