QUESTIONS AND CORRECT ANSWERS
CERTIFICATION EVALUATION SET
UPDATED RESOURCE
⩥ Earthwork has to do with the roadway in what way?
Answer: Earthwork is the excavation and placement of soils and
materials supporting the proposed roadway.
⩥ In Earthwork what is a lift?
Answer: 6" of compacted depth at full width
⩥ In Earthwork what is a Lot?
Answer: A lot is 1 lift at 500 ft or within compacted area. Isolated
compaction operations are separate lots.
⩥ Sampling at the roadway is done for
Answer: Done for base, sub grade, and embankment.
⩥ Sampling is determined how
Answer: generated with random numbers usually by a Verification
Inspector
, ⩥ What is important about sampling at the roadway
Answer: Minimum of three representative sample combined.
⩥ What is LIMS?
Answer: Laboratory Info Management System
⩥ The proctor theory is when compaction is achieved how
Answer: by inputting energy to expel air and water in the soil voids
⩥ Compaction causes
Answer: An increase in unit weight, decrease in compressibility and
permeability.
⩥ The proctor is determined where and creates what
Answer: In a laboratory and establishes a density standard to be used on
the roadway
⩥ Lab proctors are created how
Answer: Material is gathered from the road and prepared with different
amounts of water then placed in molds and hammered
⩥ What is a modified proctor used in