BRIDGE CONSTRUCTION INSPECTOR

1
BRIDGE CONSTRUCTION INSPECTOR

• Practice Questions

2
1.
An 8 ft. diameter drilled shaft has a tip
elevation of 197 ft. With a top elevation of 235
ft., what is the theoretical quantity of concrete
for this shaft?

• 29 cy
• 58 cy
• 71 cy
• 102 cy

3
1.
An 8 ft. diameter drilled shaft has a tip
elevation of 197 ft. With a top elevation of 235
ft., what is the theoretical quantity of concrete
for this shaft?
CORRECT!
4
1.
An 8 ft. diameter drilled shaft has a tip
elevation of 197 ft. With a top elevation of 235
ft., what is the theoretical quantity of concrete
for this shaft?

• INCORRECT!
• The correct answer is C, 71 cy.

5
2.
Air entrained concrete is highly resistant to the
destructive effects of freeze-thaw cycling due to
the presence of large air bubbles in the paste.

• True
• False

6
2.
Air entrained concrete is highly resistant to the
destructive effects of freeze-thaw cycling due to
the presence of large air bubbles in the paste.
CORRECT!
7
2.
Air entrained concrete is highly resistant to the
destructive effects of freeze-thaw cycling due to
the presence of large air bubbles in the paste.

• INCORRECT!
• The correct answer is False.

8
3.
A footing is 8 ft. wide by 13 ft. long. The
bottom of the footing is at elevation 211.00 and
the original ground is at elevation 225.00. The
finish grade of the deck is 235.00. What is the
amount of structure excavation?

• 54 cy
• 78 cy
• 92 cy
• 133 cy

9
3.
A footing is 8 ft. wide by 13 ft. long. The
bottom of the footing is at elevation 211.00 and
the original ground is at elevation 225.00. The
finish grade of the deck is 235.00. What is the
amount of structure excavation?
CORRECT!
10
3.
A footing is 8 ft. wide by 13 ft. long. The
bottom of the footing is at elevation 211.00 and
the original ground is at elevation 225.00. The
finish grade of the deck is 235.00. What is the
amount of structure excavation?

• INCORRECT!
• The correct answer is B, 78 cy.

11
4.
The vibrator should not be used to move concrete
laterally.

• True
• False

12
4.
The vibrator should not be used to move concrete
laterally.
CORRECT!
13
4.
The vibrator should not be used to move concrete
laterally.

• INCORRECT!
• The correct answer is True.

14
5.
During hot weather concrete placement, the
inspector should

• Not worry about wind as it will help to cool the
  concrete surface.
• Assure that the curing water is as cold as
  possible.
• Take appropriate steps to lower the mix
  temperature when it approaches 90F.
• Use clear/white plastic as part of the cure
  process.

15
5.
During hot weather concrete placement, the
inspector should
CORRECT!
16
5.
During hot weather concrete placement, the
inspector should

• INCORRECT!
• The correct answer is D, use clear/white
  plastic as part of the cure process.

17
6.
For footings and seals, the bottom elevation
shown on the plans serves as the lower pay limit.
Should the contractor over excavate below that
limit or should the need arise to excavate below
that limit to attain the necessary bearing value,
the situation must be corrected in a manner that
the construction Project Manager must approve.

• True
• False

18
6.
For footings and seals, the bottom elevation
shown on the plans serves as the lower pay limit.
Should the contractor over excavate below that
limit or should the need arise to excavate below
that limit to attain the necessary bearing value,
the situation must be corrected in a manner that
the construction Project Manager must approve.
CORRECT!
19
6.
For footings and seals, the bottom elevation
shown on the plans serves as the lower pay limit.
Should the contractor over excavate below that
limit or should the need arise to excavate below
that limit to attain the necessary bearing value,
the situation must be corrected in a manner that
the construction Project Manager must approve.

• INCORRECT!
• The correct answer is True.

20
7.
A bridge foundation must bear the weight of
traffic and the considerable weight of the
structure itself. Therefore, its foundation

• Must be near the surface to reduce deflection.
• Must start out on firm but yielding material.
• Is of no particular importance in the bridges
  stability.
• Relies on structural design, not mass.

21
7.
A bridge foundation must bear the weight of
traffic and the considerable weight of the
structure itself. Therefore, its foundation
CORRECT!
22
7.
A bridge foundation must bear the weight of
traffic and the considerable weight of the
structure itself. Therefore, its foundation

• INCORRECT!
• The correct answer is D, relies on structural
  design, not mass.

23
8.
When excavating inside a cofferdam, the Bridge
Construction Inspector

• Need not be concerned with levelness of materials
  encountered at the bottom of seal excavation.
• Should never feel responsible for monitoring the
  positioning of the internal supports for the
  sheet pile walls.
• Should arbitrarily lessen the seal depth if hard
  rock is encountered while excavating for the
  bottom of seal elevation.
• None of the above.

24
8.
When excavating inside a cofferdam, the Bridge
Construction Inspector
CORRECT!
25
8.
When excavating inside a cofferdam, the Bridge
Construction Inspector

• INCORRECT!
• The correct answer is D, none of the above.

26
9.
Reinforcing steel in piers and abutments

• Is critical to a bridges load bearing strength.
• Must be closely checked for specified lap splice
  lengths, support and wire tie accuracy.
• Must be closely checked for size, shape, length,
  spacing and quantity used.
• All of the above.

27
9.
Reinforcing steel in piers and abutments
CORRECT!
28
9.
Reinforcing steel in piers and abutments

• INCORRECT!
• The correct answer is D, all of the above.

29
10.
When placing concrete as part of a bridges
superstructure, the concrete should not be
allowed to drop more than 4 feet.

• True
• False

30
10.
When placing concrete as part of a bridges
superstructure, the concrete should not be
allowed to drop more than 4 feet.
CORRECT!
31
10.
When placing concrete as part of a bridges
superstructure, the concrete should not be
allowed to drop more than 4 feet.

• INCORRECT!
• The correct answer is False.

32
11.
A ½ inch High Strength Bolt that is 4 inches long
and installed perpendicular to the connection has
a turn requirement in the Rotational Capacity
Test of

• 1/3 turn
• 1/2 turn
• 2/3 turn
• 1 full turn

33
11.
A ½ inch High Strength Bolt that is 4 inches long
and installed perpendicular to the connection has
a turn requirement in the Rotational Capacity
Test of
CORRECT!
34
11.
A ½ inch High Strength Bolt that is 4 inches long
and installed perpendicular to the connection has
a turn requirement in the Rotational Capacity
Test of

• INCORRECT!
• The correct answer is B, 1/2 turn.

35
12.
The granular wall backfill under an impact panel
should be placed in ______ lifts.

• 6
• 12
• 18
• None of the above

36
12.
The granular wall backfill under an impact panel
should be placed in ______ lifts.
CORRECT!
37
12.
The granular wall backfill under an impact panel
should be placed in ______ lifts.

• INCORRECT!
• The correct answer is D, none of the above.

38
13.
Your bridge has precast bulb-I girders with a
camber of 2½ and the deck and rail deadload
together has a deflection of 2. The top flange
of the bulb-I girders is a total of 2 feet wide
and your superelvation is 0.04 ft/ft. With a
minimum buildup required across the entire girder
of 1, then the total buildup at the ends of the
beams at the girder centerline will be ______.

• 2
• 2½
• 3½
• 4½

39
13.
Your bridge has precast bulb-I girders with a
camber of 2½ and the deck and rail deadload
together has a deflection of 2. The top flange
of the bulb-I girders is a total of 2 feet wide
and your superelvation is 0.04 ft/ft. With a
minimum buildup required across the entire girder
of 1, then the total buildup at the ends of the
beams at the girder centerline will be ______.
2
CORRECT!
40
13.
Your bridge has precast bulb-I girders with a
camber of 2½ and the deck and rail deadload
together has a deflection of 2. The top flange
of the bulb-I girders is a total of 2 feet wide
and your superelvation is 0.04 ft/ft. With a
minimum buildup required across the entire girder
of 1, then the total buildup at the ends of the
beams at the girder centerline will be ______.

• INCORRECT!
• The correct answer is A, 2 inches.

41
14.
You have a 6 ft. diameter drilled shaft with a
clearance of 3 from the reinforcement cage to
the side of the shaft. How many spacers are
required at each interval around the drilled
shaft reinforcement cage?

• 5
• 6
• 7
• 9

42
14.
You have a 6 ft. diameter drilled shaft with a
clearance of 3 from the reinforcement cage to
the side of the shaft. How many spacers are
required at each interval around the drilled
shaft reinforcement cage?
CORRECT!
43
14.
You have a 6 ft. diameter drilled shaft with a
clearance of 3 from the reinforcement cage to
the side of the shaft. How many spacers are
required at each interval around the drilled
shaft reinforcement cage?

• INCORRECT!
• The correct answer is C, 7.

44
15.
You have a post-tensioned box girder bridge that
will have the tendons tensioned from both ends.
Given the following elongation amounts, what is
the of elongation per tendon?

• 109.4
• 121.5

• 103.4
• 107.3

45
15.
You have a post-tensioned box girder bridge that
will have the tendons tensioned from both ends.
Given the following elongation amounts, what is
the of elongation per tendon?
CORRECT!
46
15.
You have a post-tensioned box girder bridge that
will have the tendons tensioned from both ends.
Given the following elongation amounts, what is
the of elongation per tendon?

• INCORRECT!
• The correct answer is C, 109.4.