STATIC HOLDING CAPACITY 



5.1 SHORT-TERM STATIC LOADING 



Short-term static holding capacity is defined as the load required 

 to cause anchor breakout when the anchor is loaded rapidly to failure. 

 For cohesive soil, the rapid loading does not allow drainage, and the 

 capacity is governed by a soil's undrained shear strength. In cohe- 

 sionless soil, drainage occurs even though the soil is loaded rapidly, 

 and the capacity is governed by a soil's friction angle. 



For short-term static holding capacity use a factor of safety 

 between 2 and 3, depending on the nature of the anchorage and the 

 reliability with which the soil parameters have been determined. 



5.1.1 Cohesive Soil 



For short-term holding capacity in cohesive soils Equation 1-1 

 reduces to: 



F = A N s f(0.84 + 0.16 B/L) (5-1) 



st c u 



where F = short-term static holding capacity 



A = projected fluke area 



f = correction factor to account for soil disturbance 



s = soil undrained shear strength 



N = short-term holding capacity factor in cohesive soil 



B = fluke width or diameter 



L = fluke length or diameter 



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