NICET SOILS LEVEL 1 UPDATED EXAMS SCRIPT
QUESTIONS AND ANSWERS SURE A+
✔✔Define oversized fractions...D698 - ✔✔The portion of a sample that does not pass
through the required sieve in D698
✔✔Laboratory compaction tests provide...D698 - ✔✔determination of the percent
compaction and molding water needed to achieve engineering requirements
✔✔Soil placed as engineering fill is compacted to obtain what? D698 - ✔✔Sheer
strength, compressibility or permeability
✔✔Success in executing the compaction controls of earth works is highly dependant on
what? D698 - ✔✔The quality and experience of the contractor and inspector
✔✔What are the specs for a 4" mold for standard proctor? D698 - ✔✔-4" (+-).016"
average inside diameter
-4.584 (+-).018" height
.0750 (+-).0009 ft^3 volume
✔✔What are the specs for a 6" mold for standard proctor? D698 - ✔✔-6" (+-).026"
average inside diameter
-4.584 (+-).018" height
, .0750 (+-).0009 ft^3 volume
✔✔What are the specs for a Rammer in a standard proctor? D698 - ✔✔-Shall fall freely
a distance of 12(+- .05")
-The weight shall be 5.50(+-.02 lbf)
✔✔What are the specs for a straight edge? D698 - ✔✔-a stiff metal straight edge no
less than 10"
-shall be straight with .05"
-Scraping edge shall be no thicker than ⅛"
✔✔When should you standardize/calibrate the molds in D698? - ✔✔before initial use,
after repairs, annually or after 1000 test specimens
✔✔how many lifts and blows should a 4" mold be compacted on standard proctor?
D698 - ✔✔3 lifts, 25 blows each
✔✔how many lifts and blows should a 6" mold be compacted in standard proctor? D698
- ✔✔3 lifts, 56 blows each
✔✔When calibrating mold in D698 the difference between 2 methods shall not exceed...
- ✔✔.5% of nominal volume of the mold
✔✔What Is the significance of D1140? - ✔✔The determination of the amount of material
finer than a 75-um sieve in soils by washing
✔✔What is the maximum particle size allowed in test method D1140? - ✔✔75MM (3
inch)
✔✔What is the dispersant allowed in D1140? - ✔✔Sodium Hexametaphosphate
✔✔What might a Soil Wash sample be obtained from? D1140 - ✔✔Bulk samples, jar
samples, tube samples, or specimens used for other properties
✔✔How might a sample be reduced to testing size before a wash? D1140 -
✔✔quartering, use of a splitter, an entire jar sample, or cut a section from a tube and
quarter length wise
✔✔When performing a wash, what should the water temperature never exceed? D1140
- ✔✔32°C or 90°F to prevent the sieve fabric from expanding
✔✔What should happen if an insufficient amount of soil is is available for a wash?
D1140 - ✔✔A smaller mass specimen may be used and report the reason why
QUESTIONS AND ANSWERS SURE A+
✔✔Define oversized fractions...D698 - ✔✔The portion of a sample that does not pass
through the required sieve in D698
✔✔Laboratory compaction tests provide...D698 - ✔✔determination of the percent
compaction and molding water needed to achieve engineering requirements
✔✔Soil placed as engineering fill is compacted to obtain what? D698 - ✔✔Sheer
strength, compressibility or permeability
✔✔Success in executing the compaction controls of earth works is highly dependant on
what? D698 - ✔✔The quality and experience of the contractor and inspector
✔✔What are the specs for a 4" mold for standard proctor? D698 - ✔✔-4" (+-).016"
average inside diameter
-4.584 (+-).018" height
.0750 (+-).0009 ft^3 volume
✔✔What are the specs for a 6" mold for standard proctor? D698 - ✔✔-6" (+-).026"
average inside diameter
-4.584 (+-).018" height
, .0750 (+-).0009 ft^3 volume
✔✔What are the specs for a Rammer in a standard proctor? D698 - ✔✔-Shall fall freely
a distance of 12(+- .05")
-The weight shall be 5.50(+-.02 lbf)
✔✔What are the specs for a straight edge? D698 - ✔✔-a stiff metal straight edge no
less than 10"
-shall be straight with .05"
-Scraping edge shall be no thicker than ⅛"
✔✔When should you standardize/calibrate the molds in D698? - ✔✔before initial use,
after repairs, annually or after 1000 test specimens
✔✔how many lifts and blows should a 4" mold be compacted on standard proctor?
D698 - ✔✔3 lifts, 25 blows each
✔✔how many lifts and blows should a 6" mold be compacted in standard proctor? D698
- ✔✔3 lifts, 56 blows each
✔✔When calibrating mold in D698 the difference between 2 methods shall not exceed...
- ✔✔.5% of nominal volume of the mold
✔✔What Is the significance of D1140? - ✔✔The determination of the amount of material
finer than a 75-um sieve in soils by washing
✔✔What is the maximum particle size allowed in test method D1140? - ✔✔75MM (3
inch)
✔✔What is the dispersant allowed in D1140? - ✔✔Sodium Hexametaphosphate
✔✔What might a Soil Wash sample be obtained from? D1140 - ✔✔Bulk samples, jar
samples, tube samples, or specimens used for other properties
✔✔How might a sample be reduced to testing size before a wash? D1140 -
✔✔quartering, use of a splitter, an entire jar sample, or cut a section from a tube and
quarter length wise
✔✔When performing a wash, what should the water temperature never exceed? D1140
- ✔✔32°C or 90°F to prevent the sieve fabric from expanding
✔✔What should happen if an insufficient amount of soil is is available for a wash?
D1140 - ✔✔A smaller mass specimen may be used and report the reason why
