Environmental Engineering Reference
In-Depth Information
Part I
Investigation Methods and
Procedures
Purpose and Scope
Part I describes and provides the basis for the selection of the numerous methods and pro-
cedures for:
1.
Exploring the geologic environment and mapping surficial conditions, including
rock, soil, water, and geologic hazards; preparing subsurface sections; and
obtaining samples of the materials for identification, classification, and labora-
tory testing.
2.
Measurement of material properties (basic, index, hydraulic, and mechanical) in
the field and laboratory.
3.
Field instrumentation to measure and monitor movements, deformations, and
stresses occurring naturally or as a consequence of construction.
Although, in practice, analytical procedures and design criteria are often presented as part
of an investigation, they are not included within the scope of Part I.
Significance
The investigation phase of any geotechnical study undertaken for development, construc-
tion, or any other engineering works is by far the most important phase. Not only must
conditions at the project site be thoroughly identified, but for many projects, the regional
geologic characteristics must also be determined. For all phases of investigation, there are
a large number of methods and devices to choose from, ranging from simple to complex,
and usually several are applicable for a given subject of study.
Geotechnical engineering analyses and evaluations are valid only when based on prop-
erties truly representing all of the natural materials that may influence the works.
