Type of Soil
|
PSF
| |
---|---|---|
Quick sand, alluvial and filled soils, determined by test but
not more than
|
1,000
| |
Wet, soft clay; very loose silt; silty clay
|
2,000
| |
Loose, fine sand; medium clay; loose sandy clay soils
|
2,000
| |
Stiff clay; firm inorganic silt
|
3,000
| |
Medium (firm sand; loose sandy gravel; firm sand clay soils;
hard dry clay)
|
4,000
| |
Dense sand and gravel; very compact mixture of clay, sand and
gravel
|
6,000
| |
Rock
|
12,000
|
NOTE: The decomposition of organic material in landfill sites
established for the disposal of organic wastes may produce odorous,
toxic and explosive concentrations of gas which may seep into buildings
through storm sewers and similar underground utilities unless provisions
are taken to release the gases to the atmosphere.
|