Civil Engineering Reference
In-Depth Information
Figure 17.2
Methods for ground investigation drilling (schematic).
(c) Sampling
Samples obtained from test pits or boreholes may be disturbed or intact. (Samples are
often called disturbed or undisturbed but, as no soil sample is ever truly undisturbed,
the word intact can be used for samples taken with minimum disturbance.) Disturbed
samples are used principally for description and classification. They may be reconsti-
tuted to determine the properties of the soil as described in Chapter 16. Intact samples
may be cut from the base or sides of test pits using saws or knives or taken in tubes
