c. Anchor Keying 



Plates embedded edgewise are "keyed" to assume horizontal 

 orientation. 



CEL propellant anchors key according to: 



(cohesive; p 



1.5L 



. s = D - 2L (L = fluke length) 

 l.conesivej p o y 



(cohesionless) p 



Determine loading condition, calculate capacity, 

 a. Short-term static holding capacity (no drainage). 



Shape factor 

 (Skempton, 1951) 



st 



where 



St 



A 



A(c N f + Y, D N )(0.84 + 0.16 B/L) 

 V ^_^ i«/ 



After Vesic (1969) 



with disturbance 



correction factor 



(f) by Valent (1978) 



= Short-term holding capacity 



= Projected fluke area 



= Soil cohesion 



= Disturbance correction factor 



= 0.8 - terrigenous silty-clays, clayey-silts 



= 0.7 - pelagic clays 



= 0.25 - calcareous ooze (validity of this factor in doubt) 



= Buoyant unit weight of soil 



= Plate embedment depth 



= Plate width 



= Plate length 



= Short-term holding capacity factor-cohesive soil 



= Holding capacity factor for drained or frictional 

 condition 



11 



