General Engineering Contractor's License – 1 CORRECT 100%
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Course
Contractor\\\'s License
Institution
Contractor\\\'s License
What is the rule of thumb for the minimum compacted layer thickness to prevent full width tearing of the mix as determined by the maximum aggregate size? - ANSWER The minimum course thickness should be at least 3 times the largest aggregate size
What is the maximum depth you can excavate lower t...
General Engineering Contractor's License – 1
CORRECT 100%
What is the rule of thumb for the minimum compacted layer thickness to prevent full width tearing of
the mix as determined by the maximum aggregate size? - ANSWER The minimum course thickness
should be at least 3 times the largest aggregate size
What is the maximum depth you can excavate lower than the trench box? - ANSWER 2 feet
When installing a Class 1 Division 1 pipe and it will be running at 75% maximum pressure, how much
beyond the manufactures recommended pressure must it be tested? - ANSWER 1.25 times
In laying out an excavation site from a benchmark to a reference point and to an excavation location, the
distance from the benchmark are measured: - ANSWER Horizontally to both the reference and the
excavation location
What is tie wire used for when installing conductors? - ANSWER To fasten conductor to insulator
When doing a preliminary pressure test on a water line for major leaks, what % of the designed pressure
should you test? - ANSWER 100%
An outdoor sign is accessible to vehicles but it is not protected from physical damage. The bottom of this
sign must be above the road at least ____ feet. - ANSWER 16
What is required when an employee must lean out over an opening to receive materials? - ANSWER
Personal fall arrest system
If concrete has gone through a season and its starting to show crazing and scaling, what is this caused
by? - ANSWER Overworked
, What is the primary benefit of obtaining good pre-compaction density on the mix with the paver screed?
- ANSWER Reduced differential compaction on low spots and rutted areas
What is the best way to cut any size of ductile iron pipe outside of a trench? - ANSWER Abrasive cutoff
saw
Using the ASTM metric designation for steel reinforcing bars adopted in 1996, a #25 bar is the standard
replacement of what diameter in inches? - ANSWER 1 inch
What is the motor grader primarily used for? - ANSWER To trim and fill the cut site and process material
What type of material is pipe made from which carries ethanol? - ANSWER Stainless steel
What should never be used when giving directions to a job site? - ANSWER Left and right
Under which condition would you use concrete with low heat hydration? - ANSWER Structures with
considerable mass
The maximum size valve recommended to be installed on ductile iron pipe without the support is: -
ANSWER 10 inch
What is the minimum height required from the bottom of a warning sign to the road on a freeway? -
ANSWER 7 feet from the asphalt
What type of material is the appropriate choice for bedding concrete pipe or slab? - ANSWER Class A
bedding
What is the minimum wall thickness of ductile iron pipe allowed before restrained joints are required? -
ANSWER .25
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