Table 2-1. Required Site Data Versus Type of Analysis 



Soil Data 



Type of Soil Under — 



Penetration 



Static 

 Loading 



Dynamic Loading 



Short- 

 Term 



Long- 

 Term 



Impulse 



Cyclic 



Earthquake 



Strength 

 s 



$ 



c 

 Density 

 Plasticity 

 Grain size 

 Permeability 

 Origin 

 Depth to rock 



1 

 1 

 2 



1,2 

 1,2 



1,2 



2 

 2 



2 

 1,2 



1,2 

 1 



1,2 

 1,2 



1 

 1,2 



2 



1 

 1,2 

 1,2 

 1,2 



2 

 1,2 



1 = cohesive 



2 = cohesionless 



(c) Soil Plasticity - Plastic Index (PI) should be determined from 

 laboratory tests . 



(d) Soil Grain Size Classification - Classification by grain size 

 and plasticity between cohesive and cohesionless is manda- 

 tory. Classification by the Unified Soil Classification System 

 is preferable. 



(e) Permeability - Required when cyclic load capacity is to be 

 determined. 



(f) Soil Origin - Deep ocean soils should be classified by origin 

 on the basis of dry weight percentage that is biogenic (cal- 

 careous or siliceous). 



(g) Depth to Rock - Required to determine adequacy of soil 

 cover. 



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