1|Page
CSLB CONCRETE C8 LICENSE PRACTICE TEST 1,2,3 AND 4 NEWEST
2025/2026 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
TEST 1
What is the minimum spacing of parallel reinforcing bars placed in
two or more layers? - ANSWER-1 inch
Explanation:
According to the American Concrete Institute, where parallel
reinforcement is placed in two or more layers, bars in the upper
layers shall be placed directly above bars in the bottom layer with
clear distance between layers not less than 1 inch.
When applying concrete to concrete there are several factors to
consider. Which is most important? - ANSWER-In most cases the
most important is the bond.
What is the purpose of the rebar? - ANSWER-To increase the
tensile strength
,2|Page
There are many ornamental uses of concrete, including casting
architectural elements, ornaments, and faux finishes. How would
you describe terrazzo in the simplest terms? - ANSWER-A special
combination of colored rock and glass for floors.
What is the minimum size of anchor bolt can be used in seismic
category E? - ANSWER-#5
The building code requires 5/8" anchor bolt to be used in seismic
category E.
Construction loads are: - ANSWER-The maximum loads to which
a structure will ever be subjected.
In some cases it may be necessary to use stronger or double ties.
Why? - ANSWER-As a safety precaution when workers may need
to climb on reinforcement.
What size of rebar is used to reinforce stem wall? - ANSWER-#4
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Explanation:
The code requires ½ inch rebar to be used in stem walls.
On concrete paving or roadway, it is normal to use transverse
joints at regular intervals. These joints are best filled and sealed.
Why? - ANSWER-To reduce risk of exposure to the reinforcing.
When batching concrete, what percentage of concrete powder is
commonly used? - ANSWER-25% to 40% cement powder
The sides of the main field of the slab must be reinforced with an
___ by ___ grid. - ANSWER-15"...18"
How long can a batch of concrete be in the truck before
considerations of quality arise? - ANSWER-45 minutes
Pitch in a spiral reinforcing is a measure of: - ANSWER-Spacing
between turns.
, 4|Page
The anchor bolt must be embedded ___ into the slab. - ANSWER-
7"
What is the purpose of the deformed rebar? - ANSWER-
Deformations improve the bond between steel and concrete
What would be the easiest way to avoid puddling under a slab? -
ANSWER-Careful grading
Air-entraining: - ANSWER-Improves the working life of concrete.
What is the maximum number of parallel bars that can be bundled
together and still be considered a single unit? - ANSWER-4 bars
Explanation:
According to the American Concrete Institute, groups of parallel
reinforcing bars bundles in contact to act as a unit shall be limited
to four in any one bundle.
CSLB CONCRETE C8 LICENSE PRACTICE TEST 1,2,3 AND 4 NEWEST
2025/2026 ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
TEST 1
What is the minimum spacing of parallel reinforcing bars placed in
two or more layers? - ANSWER-1 inch
Explanation:
According to the American Concrete Institute, where parallel
reinforcement is placed in two or more layers, bars in the upper
layers shall be placed directly above bars in the bottom layer with
clear distance between layers not less than 1 inch.
When applying concrete to concrete there are several factors to
consider. Which is most important? - ANSWER-In most cases the
most important is the bond.
What is the purpose of the rebar? - ANSWER-To increase the
tensile strength
,2|Page
There are many ornamental uses of concrete, including casting
architectural elements, ornaments, and faux finishes. How would
you describe terrazzo in the simplest terms? - ANSWER-A special
combination of colored rock and glass for floors.
What is the minimum size of anchor bolt can be used in seismic
category E? - ANSWER-#5
The building code requires 5/8" anchor bolt to be used in seismic
category E.
Construction loads are: - ANSWER-The maximum loads to which
a structure will ever be subjected.
In some cases it may be necessary to use stronger or double ties.
Why? - ANSWER-As a safety precaution when workers may need
to climb on reinforcement.
What size of rebar is used to reinforce stem wall? - ANSWER-#4
,3|Page
Explanation:
The code requires ½ inch rebar to be used in stem walls.
On concrete paving or roadway, it is normal to use transverse
joints at regular intervals. These joints are best filled and sealed.
Why? - ANSWER-To reduce risk of exposure to the reinforcing.
When batching concrete, what percentage of concrete powder is
commonly used? - ANSWER-25% to 40% cement powder
The sides of the main field of the slab must be reinforced with an
___ by ___ grid. - ANSWER-15"...18"
How long can a batch of concrete be in the truck before
considerations of quality arise? - ANSWER-45 minutes
Pitch in a spiral reinforcing is a measure of: - ANSWER-Spacing
between turns.
, 4|Page
The anchor bolt must be embedded ___ into the slab. - ANSWER-
7"
What is the purpose of the deformed rebar? - ANSWER-
Deformations improve the bond between steel and concrete
What would be the easiest way to avoid puddling under a slab? -
ANSWER-Careful grading
Air-entraining: - ANSWER-Improves the working life of concrete.
What is the maximum number of parallel bars that can be bundled
together and still be considered a single unit? - ANSWER-4 bars
Explanation:
According to the American Concrete Institute, groups of parallel
reinforcing bars bundles in contact to act as a unit shall be limited
to four in any one bundle.
