of Earth Science |Northeastern
TO GEOTECHNICAL ENGINEERING
Review for Exam
By the end of
today's class, you should be able to do the following:
appropriately to the list of skills in
should you bring to this
* Be ready to
answer "Questions and Practice Problems", p. 32-33: Problems
2.1, 2.2, 2.3, 2.4, 2.5, and
Questions and Practice Problems", p. 45: Problem
* List the eight
common rock-forming minerals mentioned in your textbook and describe
their properties and general
(feldspars, quartz, ferromagnesian minerals, iron oxides, calcite,
dolomite, mica, and gypsum)
samples of the common rock-forming minerals; give mineral names where
some of the specific properties of these minerals might be of
importance to a geotechnical engineer.
* Describe the
importance of discontinuities (bedding
planes, schistocity, folds, joints,
and fractures in engineering analysis).
* Name and give
concise definitions of the three major classes of rocks. For each
one, list subgroups and describe their formation and important
* Examining hand
samples of various types of rocks, construct reasonable hypotheses as
to how they formed; classify them according to your hypotheses.
* Suggest why
some of the specific properties of these rocks might be of importance
to a geotechnical engineer.
Describe the importance of discontinuities (bedding
planes, schistocity, joints,
and fractures) in engineering analysis.>
the different goals and objectives of geologists and engineers, write
definitions of "soil", "sediment", and "rock" that
would be suitable for each group.>
* Describe the characteristics of six different environments of soil
formation mentioned in the textbook on pages 33-43, including their
(residual, glacial, alluvial, lacustrine, aeolian,
and colluvial soils).
* Explain why an understanding the engineering properties of soil and
rock would be useful in common projects such as building of, say, a
parking garage or roadway.
* Answer "Questions
and Practice Problems", p. 32-33: Problems
2.1, 2.2, 2.3, 2.4, and
* Explain the difference between volume, mass, and weight of the three
phases of soils.
Questions and Practice Problems", p. 45: Problems
2.13 through 2.19. In answering the problems, discuss the
--Location of the
--Sketch of a
geologic cross section, plan view map, or other representation of the
important geological aspects of the situation.
--A brief summary
of the question/problem posed
geologic considerations that might be important.
* List the
three phases of soils.
* Explain how to
in the laboratory.
Report, compare, and analyze the results of the soil moisture
* Explain what
the following quantities reveal about a soil, and using
a soil phase diagram, define each one:
q porosity (n)
s density of the soil sample
s density of water
q specific gravity of solids (Gs)
* Using the mass of
a dry soil sample, estimate the volume of solids by using density of
the mineral content.
* Given a mass of water in a sample, use the density of water to
estimate the volume of water.
of Earth Science | Northeastern
© 2007 Laura L. Sanders. Last updated
February 2, 2007.