TABLE 1
Principal Soil Deposits
+))))))))))))))))0))))))))))))))))))))))))))))))))))))0)))))))))))))))))))))))))),
*
*
Pertinent Engineering *
*
Major
* Division
*
*
*
Principal Soil Deposits
Characteristics
*
*
*
*
/))))))))))))))))3))))))))))))))))))))))))))))))))))))3))))))))))))))))))))))))))1
*SEDIMENTARY
*
*
*
*SOILS -
*
*
*
*
*
*
*
*
*
*
*Residual
*))))))))
*
*
*
*
*
*
*
*Material
* Residual sands and fragments of
* Generally favorable
*
*formed by
* gravel size formed by solution and * foundation conditions
*
*
*
*of underlying
* leaving the more resistant
*
*
*parent rock
* particles; commonly quartz
*
*
*or partially
*
*
*
*indurated
* Residual clays formed by
* Variable properties
*
*material.
* decomposition of silicate
* requiring detailed
*
* rocks, disintegration of
* investigation. Deposits *
*
*
* shales, and solution of
* present favor able
*
*
* carbonates in limestone.
* foundation conditions
*
*
* With few exceptions becomes
* except in humid and
*
*
* more compact, rockier, and
* tropical climates,
*
*
* less weathered with increasing
* where depth and rate
*
*
* depth. At intermediate stage
* of weathering are very
*
*
*
*
* and stratification of parent rock. *
*
*
*
*
*
*Organic
*
*
*
*)))))))
*
*
*
*
*
*
*
*Accumulation
* Peat. A somewhat fibrous aggregate* Very compressible.
*
*of highly
* of decayed and decaying vegetation * Entirely unsuitable for *
*organic
* matter having a dark color and odor* supporting building
*
*material
* of decay.
* foundations,
*
*formed in
*
*
*
*place by the
* Muck. Peat deposits which have
*
*
*growth and
* advanced In stage of decomposition *
*
*subsequent
* to such extent that the botanical *
*
*decay of
* character is no longer evident.
*
*
*plant life.
*
*
*
*
*
*
*
.))))))))))))))))2))))))))))))))))))))))))))))))))))))2))))))))))))))))))))))))))-
Change 1, September 1986
7.1-2
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