Geotech / Transportation Lab Final Exam
Review | 100% Correct Answers |
Verified | Latest 2024 Version
As engineers, when deciding what kind of testing is most appropriate, your project type and end goals
need to be considered. What other factor(s), if any, do you think should also be considered when
determining the best testing methods for a specific project? - ✔✔Knowing what kind of information is
needed should also be a basis for deciding what testing method is best. Depending on which properties
you're looking to characterize in a sample, you might choose different methods of testing. Also knowing
a budget, how quickly results are needed, location and such is required.
True or False: In-situ testing, in-place testing, and field testing all generally mean the same thing. -
✔✔True
If there is no soil testing, what percent confidence do we have in a geotechnical design? - ✔✔35%
What testing methods give information regarding soil type? - ✔✔SPT (standard penetration test),
Atterberg Limits, CPT (cone penetration test), sieve analysis
True or False: One structure should have the same foundation design regardless of its subsurface. -
✔✔False
% error for sieve analysis test allowed from beginning to end should be less than _____ - ✔✔2%
During the sieve analysis, what item should be placed at the bottom of a sieve stack before pouring the
soil sample in? - ✔✔A pan
What type of soil should be tested with sieve analysis testing? - ✔✔coarse-grained soil
What is true about the plasticity index? - ✔✔The Plasticity Index is used in classifying fine-grained soils,
The Plasticity Index represents the range of water content over which a soil is considered plastic, and
PI=LL-PL
, True or False:
The Atterberg Limits only apply to fine-grained soils. - ✔✔True
True or False:
The Plastic Limit is between the Plastic State and the Liquid State. - ✔✔False, PL is the limit between
plastic state and solid state
What are the two specific Atterberg Limits that were tested in the sieve analysis lab? - ✔✔Plastic limit
and liquid limit
The Flow Curve plots what two variables from the Liquid Limit test? - ✔✔Blow count and moisture
content
The plastic limit test involves rolling a soil sample into threads with what size diameter? - ✔✔1/8 in
True or False: Wet sieving is required on all soil samples prior to testing. - ✔✔False
What data should be collected (not calculated) during a sieve analysis test. - ✔✔starting soil sample
weight, sieve number, empty sieve weights, sieve with retained soil weights
True or False: A wet soil sample is acceptable to test in a set of sieves. - ✔✔False
What functions does the Liquid Limit Test Grooving Tool serve? - ✔✔grooving tool, device calibration,
groove closure guide
True/False: As stated in the video, per the Liquid Limit test ASTM, the soil should proceed from the
wetter condition to the dryer condition of the soil for each test trial. - ✔✔False
True/False:There are a total of three distinct Atterberg Limits. - ✔✔True, plastic limit, liquid limit, and
shrinkage limit
Review | 100% Correct Answers |
Verified | Latest 2024 Version
As engineers, when deciding what kind of testing is most appropriate, your project type and end goals
need to be considered. What other factor(s), if any, do you think should also be considered when
determining the best testing methods for a specific project? - ✔✔Knowing what kind of information is
needed should also be a basis for deciding what testing method is best. Depending on which properties
you're looking to characterize in a sample, you might choose different methods of testing. Also knowing
a budget, how quickly results are needed, location and such is required.
True or False: In-situ testing, in-place testing, and field testing all generally mean the same thing. -
✔✔True
If there is no soil testing, what percent confidence do we have in a geotechnical design? - ✔✔35%
What testing methods give information regarding soil type? - ✔✔SPT (standard penetration test),
Atterberg Limits, CPT (cone penetration test), sieve analysis
True or False: One structure should have the same foundation design regardless of its subsurface. -
✔✔False
% error for sieve analysis test allowed from beginning to end should be less than _____ - ✔✔2%
During the sieve analysis, what item should be placed at the bottom of a sieve stack before pouring the
soil sample in? - ✔✔A pan
What type of soil should be tested with sieve analysis testing? - ✔✔coarse-grained soil
What is true about the plasticity index? - ✔✔The Plasticity Index is used in classifying fine-grained soils,
The Plasticity Index represents the range of water content over which a soil is considered plastic, and
PI=LL-PL
, True or False:
The Atterberg Limits only apply to fine-grained soils. - ✔✔True
True or False:
The Plastic Limit is between the Plastic State and the Liquid State. - ✔✔False, PL is the limit between
plastic state and solid state
What are the two specific Atterberg Limits that were tested in the sieve analysis lab? - ✔✔Plastic limit
and liquid limit
The Flow Curve plots what two variables from the Liquid Limit test? - ✔✔Blow count and moisture
content
The plastic limit test involves rolling a soil sample into threads with what size diameter? - ✔✔1/8 in
True or False: Wet sieving is required on all soil samples prior to testing. - ✔✔False
What data should be collected (not calculated) during a sieve analysis test. - ✔✔starting soil sample
weight, sieve number, empty sieve weights, sieve with retained soil weights
True or False: A wet soil sample is acceptable to test in a set of sieves. - ✔✔False
What functions does the Liquid Limit Test Grooving Tool serve? - ✔✔grooving tool, device calibration,
groove closure guide
True/False: As stated in the video, per the Liquid Limit test ASTM, the soil should proceed from the
wetter condition to the dryer condition of the soil for each test trial. - ✔✔False
True/False:There are a total of three distinct Atterberg Limits. - ✔✔True, plastic limit, liquid limit, and
shrinkage limit
