2. Detailed Procedure - (Refer to Valent, et al 1979) 



Used when peak deadweight lateral capacity is desired. 



a. Considerations 



Bearing Capacity 



- Not considered problem when resultant normal soil 

 reaction lies within middle one-third of anchor base. 



Vertical Load 



- Resisted directly by a portion of the submerged anchor 

 wt. ; wt in excess of that required to develop lateral 

 capacity. 



- Discount suction effect. 



Horizontal Load 



- Components composing 

 horizontal load 

 resistance 



Items can be neglected 



1. shear along anchor base 



2. shear along base of passive wedge 

 at anchor front 



3. uplift (weight) of passive wedge 



4. shear along anchor sides 



5. suction at rear of anchor 



Calculated capacities assume displacement only to mobilize base 

 shear (< 10% anchor width; capacity will typically increase with drag) 

 and assumes no auxiliary embedment means (jetting). 







(ji.-V- ► - 



, 



T 







X-'i;'^^/ 



i J li 







11 : 



w "•w-''W>'"-!f^~«'';'js 







«b 



' 













(No., «, 



"b-x. 









Deadweight capacity enhanced by roughened surface or 

 addition of skirts. 



Skirts in cohesive soil move sliding surface to deeper, 

 stronger soil; optimum length ~ . IB 



27 



