Soil Exploration - Soil Properties: Testing, Measurement, and Evaluation - page 19

Figure 2-13
Sample CPT test results.
These results were
obtained from a piezocone
and thus also include a
plot of pore water pres-
sure, u , vs. depth. All
stresses and pressures
are expressed in tons per
square foot (tsf).
Source: D. P. Coduto,
Geotechnical Engineering
Principles and Practice,
fig. 3-29, p. 78 (1999).

of sleeve resistance to cone resistance is higher in cohesive soils than in
cohesionless soils; hence, this ratio together with cone resistance can be
used to estimate the type of soil being penetrated. More information
concerning such estimates is available in Soils and Foundations ,7 th edi-
tion, by Liu and Evett (Prentice Hall, 2008).

The field vane test is a fairly simple test that can be used to determine
in-place shear strength for soft clay soils—particularly those clay soils
that lose part of their strength when disturbed (sensitive clays)—
without taking an undisturbed sample. A vane tester (see Figure 2-14)
is made up of two thin metal blades attached to a vertical shaft. The test

VANE TEST