Lesson 1/Practice Exercise.
PRACTICE EXERCISE FOR LESSON 1
Instructions
Check your understanding of Lesson 1 by completing the practice exercise. There is only one correct
answer to each question. Try to answer all of the questions without referring to the lesson materials.
When you have completed all of the questions, turn the page and check your answers against the correct
responses. Each correct response is referenced to specific portions of the lesson material so that you can
review any questions you have missed or do not understand, before continuing to the next lesson.
1.
Using this drawing of a volume of soil, label the weight and volume proportions.
2.
WT = __________ + __________
3.
VT = __________ + __________ + __________
4.
Some of the physical properties which determine a soil's engineering characteristics are moisture,
gradation, particle grain size, specific gravity, and __________.
5.
Gap-graded soils are weaker than well-graded soils because the voids between the particles are
larger.
a.
True
b.
False
6.
Cobbles are soil grains larger than three inches. Soil grains retained in the #4 sieve are called
__________.
7.
A "fat soil" will probably have to be treated for use in construction because
a.
it drains water too quickly.
b.
moisture causes it to lose strength.
c.
the rounded particles slip by one another and reduce the soil's resistance to penetration.
d.
its specific gravity is too low.
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