Quantcast Table 32. Soil Properties - Non-Cohesive Soils

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TABLE 32
Soil Properties - Non-Cohesive Soils
Modulus of Poisson's Friction  
Soil
Description
 "N" elasticity  ratio
 factor
Type
(psi)
n[*]
f'c
Silt
Loose
4  
1,000
 0.40
0.4
Very Compact  30  
2,000
 0.30
0.8
Granular Sand
Loose
 10  
1,800
 0.30
0.5
Very Compact  50  
7,000
 0.25
0.7
Gravel  Loose
 15  
3,000
 0.20
0.6
Very Compact  70    20,000
 0.15
0.7
Bedrock  
20,000-
 0.10
0.7
50,000
[*]For soils below the water table, n = 0.50
TABLE 33
Soil Properties - Cohesive Soils
 Modulus of    Poisson's  
Description   Plasticity  Condition    "N"  elasticity  
ratio
Ad
index
(psi)
n[*]
(p
 Slightly
1 - 10   Medium soft
5  
2,000
0.45
Plastic
Hard
 20  
5,000
0.45
 Plastic
10 - 20   Medium soft
4  
2,000
0.45
Hard
 15  
6,000
0.45
 Very
20+
Medium soft
3  
2,000
0.45
Plastic
Hard
 12  
6,000
0.45
[*]For soils below the water table, n = 0.50
2.08-308





 


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