CIVIL ENGINEERING MCQ
1.
In
a No. 4 sieve, the dimensions of voids are approximately
a. 4 in. × 4 in.
b. 1/4
in. * 1 /4 in.
c. 2 in. × 2 in., giving an area of approximately 4.0
in.2.
d. 1 in × 4 in.
e. none of the above.
2.
A
well-graded coarse aggregate is one in which the size of all aggregate
particles is approximately the same.
a. True b. False
3.
Everything
else being the same, a concrete with a larger coarse aggregate requires less Portland
cement and water paste to give the same concrete strength.
a. True b. False
4.
Lightweight
structural concrete is heavier than insulating concrete.
a. True b. False
5.
The
slump of concrete is measured
a. when
the concrete is fresh.
b. 28 days after casting
the concrete in a test specimen.
c. 14 days after
casting the concrete in a test specimen.
d. 7 days after
casting the concrete in a test specimen.
e. 1 day after
casting the concrete in a test specimen.
6.
The
slump of concrete is a measure of the
a. compressive
strength of concrete.
b. tensile strength
of concrete.
c. modulus of
elasticity of concrete.
d. workability
of concrete.
7.
The
test specimen used for determining the compressive strength of concrete in the
United States is a
a. 6-in. diameter,
6-in.-high cylinder.
b. 6-in.
diameter, 12-in.-high cylinder.
c. 6-in. diameter,
18-in.-high cylinder.
d. 6-in. diameter,
12-in.-high cone.
8.
The
compressive strength of concrete is generally measured
a. when the concrete
is fresh.
b. 28
days after casting the concrete in a test specimen.
c. 14 days after
casting the concrete in a test specimen.
d. 7 days after
casting the concrete in a test specimen.
e. 1 day after
casting the concrete in a test specimen.
9.
In
a high-rise building, the concrete may be brought from the ground to the
location of placement by
a. chutes. b. buckets.
c. pumping. d. (a) or (b).
e. (b)
or (c).
10After concrete has been placed in the form, it should
be compacted as much as is economically practical.
a. True b. False
11 The consolidation and compaction of concrete on a
construction site are generally done
a. manually using a
2-in.-diameter, 3-ft-long steel rod.
b. manually using a
1-in.-diameter, 3-ft-long steel rod.
c. using
a power-driven rod vibrator.
d. using a
power-driven plate vibrator.
12 The finishing operations of a concrete surface usually
involve striking, floating, and troweling. The sequence in which these three operations
are generally performed is
a. striking,
floating, and troweling.
b. floating, striking,
and troweling.
c. striking,
troweling, and floating.
d. troweling,
floating, and striking.
13 Portland
cement sets and gains strength by virtue of its chemical reaction with
a. water. b. oxygen in air.
c. carbon dioxide in
air. d.
aggregates.
e. none of the above.
14The
rate at which concrete gains strength increases as the ambient air temperature
increases.
a. True b. False
15High-strength
concrete is defined as concrete whose compressive strength is greater than or
equal to
a. 4,000 psi. b. 5,000 psi.
c. 6,000
psi.
d.
8,000
psi.
e. 10,000 psi.
16 A
high-strength concrete generally requires a
a. water-increasing
agent. b. water-reducing agent.
c. sand-reducing
agent. d.
sand-increasing
agent.
17 Steel
reinforcing bars, generally used in concrete, have a yield strength of
a. 60
ksi.
b.
80
ksi.
c. 100 ksi. d. 120 ksi.
18 A
#8 reinforcing bar has a diameter of
a. 18 in. b. 8 in.
c. 1
in.
d.
none
of the above.
19 In
a welded wire fabric mat that has a designation of 8 * 8-D4.0
* 4.0, the number 4.0 indicates that the wires are
a. deformed wires,
each with a diameter of 4.0 mil.
b. deformed wires,
each with a diameter of 0.04 in.
c. deformed
wires, each with a cross-sectional area of 0.04 in.2.
d. deformed wires,
each with a cross-sectional area of 0.4 in.2.
e. deformed wires,
each with a cross-sectional area of 4.0 in.2.
20 Epoxy-coated bars are generally used in
a. high-rise
buildings built in warm climates.
b. parking garages
built in warm climates.
c. high-rise
buildings built in cold climates.
d. parking
garages built in cold climates.
e. none of the above.