FIELD TEST 

 Redue measured holding 

 capacity using Figure 3 

 to obtain short-term 

 holding capacity, F j. 

 Proceed to Step 4 



FIELD TEST 



Take measured 

 holding capacity, F j. 

 ° ^d to Step 7. 



Determine shear strength 

 distribution, characteris- 

 tic strength, c, and unit 

 weight, 7t, 



Obtain estimated 

 short-term holding 

 capacity. Ft- 

 (Figure 9) 



Determine short- 

 term holding capacity 

 Fj (Eqn 4) 



''iA 



\ 



.' (6a) 



\ 



Estimate friction 

 angle, , and unit 

 weight y J-, 



Obtain estimated 

 short-term holdint 

 capacity. Ft. 

 (Figure 10) 



Determine N (Figure 4) 

 Y(6c) 



Predicted holding 

 capacitv for design 

 purposes is Fy 



Hoidinp capacity 

 for design purposes 



is y. Ft 



^r(5a) 



Estimate drained 

 friction angle, 



'f (5b) 



Develop a mooring design 

 that reduces effects of 

 repeated loading and use 

 high factors of safety 

 (a minimum of 10) 



Determine Nq (Figure 4) 



Calculate drained 

 holding capacity, Fyn 

 (Eqn 61 



Estimated holding 

 capacity for design 

 purposes is Vz Fj 



' 



\ 



' (5d) \ 



Design holding capacity 

 is F-r is structure is 

 critical or manned, 

 0.6 F J to account for 

 possible creep effects 



Y(9b) 



Estimate D/B at whic 

 deep anchor behavior 

 begms 



/ 



f (5d) 



Design holding capacity 

 is Fjn if structure is 

 critical or manned, 

 0.6 F-|-Qto account for 

 possible creep effects 



tOb) 



Using this value of D/B 

 Calculate short-term 

 Holding capacity, Fy 



Estimated holding 

 capacity for design 

 purposes is Vi of 

 this value of Ft 



Figure 8. Block diagram illustrating suggested procedure for 

 predicting embedment anchor holding capacity. 



27 



