Table 8-7.2 Applicability of Foundation Soil Improvement for Different Structures and Soil Types
(for Efficient Use of Shallow Foundations)
Category of
Structure
Permissible
Load Intensity/ Usual
Probability of Advantageous Use of Soil Improvement
Structure
Settlement
Bearing Pressure
Techniques
Required kPa (tsf)
Loose
Soft Alluvial
Old, Inorganic
Cohesionless
Deposits
Soils
Soils
High rise/ more than
Small<25-50mm
High 287-96 ( 3-1 )
High
Unlikely
Low
Office/Apartment
six stories
Frame or load
Medium rise 3-6
Small<25-50mm
Moderate 192 (2)
High
Low
Good
bearing
stories
construction
Low rise
Small<25-50mm
Low 96-192 (1-2 )
High
Good
High
1-3 stories
Large span w/heavy
Small<25-50mm
Variable/ high local
High
Unlikely
Low
Industrial
machines,
Differential
concentrations to >383
cranes;process and
Settlement Critical
(4)
power plants
Framed warehouses
Moderate
Low 96-192 (1-2 )
High
Good
High
& factories
Covered storage,
Low to moderate
Low <192 (2)
High
Good
High
storage rack
systems, production
areas
Water /waste water
Moderate
Low <14364 (150)
High, if needed
High
High
Others
treatment plants
Differential
<144 (1.5)
at all
settlement important
Storage tanks
Moderate to high,
High/up to 28728 (300)
High, if needed
High
High
Diff. maybe critical
at all
Open storage Areas
High
High/up to 28728 (300)
High, if needed
High
High
at all
Enbankments/
Moderate to high
High/up to 28728 (300)
High, if needed
High
High
at all
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