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CDC 3E251 VOLUME 3 EXAM LATEST UPDATED
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CDC 3E251 VOLUME 3 EXAM LATEST UPDATED ...
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CDC 3E251 VOLUME 3 EXAM LATEST UPDATED2024-2025
What method can you use to ensure perfectly square corners when laying out an
area for concrete? - ANSWER 3, 4, 5 method
What is the ONLY real difference between laying out a large area and a small area?
- ANSWER Amount of work
You should place the first centerline stake for a large concrete project at the -
ANSWER Beginning of the project
Which piece of equipment is NOT recommended for excavating large areas? -
ANSWER Backhoe
The base course distributes wheel load stresses to the - ANSWER Subgrade
What two construction materials can you recycle to use for other purposes? -
ANSWER Asphalt and concrete
The AREA of a rectangle 8 feet by 12 feet is 96 - ANSWER Square feet
What is the rounded numerical value of Pie? - ANSWER 3.14
What is the APPROXIMATE area of a circle that measures 18 feet in diameter? -
ANSWER 254 square feet
What is directly or indirectly responsible for MOST pavement failures and
deterioration? - ANSWER Water
Which of these conditions is NOT a function of subsurface drainage? - ANSWER
Raise the water table
If you are installing culverts or storm drains, the bottom of the trench should be -
ANSWER-shaped to fit the pipe
Notches are created in the center of check dams to - ANSWER Allow for the
normal flow of water
, What can you do if you want to funnel water into the inlet of a culvert? - ANSWER
Flare the end walls
French drains are NOT recommended for permanent construction because they
have - ANSWER A tendency to silt up
You should treat the bottom of vertical dry wells with calcium chloride or hay to -
ANSWER Prevent freezing
Holes in the perforated pipe should be placed UP when the - ANSWER Structure is
to be placed along the side of the pavement
After you place either your impervious soil layer or filter material for a subsurface
structure, make sure the BOTTOM of the trench is - ANSWER Shaped to fit the
pipe
The purpose of a drainage inspection is to report on the - ANSWER Condition,
function, and safety of the items inspected
What type of drainage inspection should you perform during or immediately after a
rainstorm? - ANSWER Operational
What are the types of drainage defects? - ANSWER Breaks, erosion, vegetation,
and obstructions
To control erosion at the OUTLET end of a culvert, you should - ANSWER Install
a plank headwall
You should install a drop inlet at the end of a culvert to - ANSWER Control silt
buildup
Which type of Portland cement is used when high strength is required in a very
short time? - ANSWER III
What type of Portland cement is used in large masses of concrete, such as large
dams? - ANSWER IV
What percent of the volume of a concrete mix is made up of aggregates? -
ANSWER 60-75
How much water in gallons per cubic yard can be added at the jobsite without
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