1|Page
CSLB Concrete C8 License Practice ||Verified Exam!!||
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Questions And Correct Answers (Verified Answers)
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Exam!!!
How many cubic yards of backfill are required for a 3' x 5'
trench, 1500 ft long, with a 1 foot diameter pipe? - Answer-
789.72
Explanation:
Step 1. Find the net face area of the trench deducting for
pipe.Face area including pipe: 3 x 5 = 15 square feetArea
of the pipe: 𝐴=𝜋𝑟2A = 3.14 x .5 x .5A = 0.785Find the face
area of the trench minus area of the pipe, which will give
you the net area for the backfill.15 - 0.785 = 14.215Step 2.
Find the total volume of the backfill.14.215 x 1500 =
21322.5 cubic feet Convert the volume into cubic
yards.21322.5 ÷ 27 = 789.72 cubic yards
When can the live load be calculated by multiplying the
height, width and length of a pour and dividing by the
deadload? - Answer-Never
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Tensile strength in concrete is achieved by: - Answer-The
use of steel reinforcement.
Refer to the house plan. What is the total cost for the
foundation slab if the contractor charges $3.54 per square
foot? - Answer-$6524.90
Explanation:
The easiest way to solve for the area of the slab is to
image a full rectangle of the slab and subtract void areas
from the area of the slab.
Rectangle area: 28.167' x 71.5'= 2013.94 sq ftLeft void
area: 6.667' x 1.83' = 12.2 sq ftCenter void area: 11.5' x
1.83' = 21.045 sq ftRight void area: 9.167' x 15' =
137.505Net area of the foundation slab: 2013.94 - 12.2 -
21.045 - 137.505 = 1843.19 sq ft.Calculate the price of the
slab.1843.19 sq ft x $3.54 = $6524.90
What is the minimum spacing of parallel reinforcing bars
placed in two or more layers? - Answer-1 inch
Explanation:
, 3|Page
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
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
CSLB Concrete C8 License Practice ||Verified Exam!!||
Most Recent Exam Actual Complete Real Exam
Questions And Correct Answers (Verified Answers)
Already Graded A+ | Guaranteed Success!! Newest
Exam!!!
How many cubic yards of backfill are required for a 3' x 5'
trench, 1500 ft long, with a 1 foot diameter pipe? - Answer-
789.72
Explanation:
Step 1. Find the net face area of the trench deducting for
pipe.Face area including pipe: 3 x 5 = 15 square feetArea
of the pipe: 𝐴=𝜋𝑟2A = 3.14 x .5 x .5A = 0.785Find the face
area of the trench minus area of the pipe, which will give
you the net area for the backfill.15 - 0.785 = 14.215Step 2.
Find the total volume of the backfill.14.215 x 1500 =
21322.5 cubic feet Convert the volume into cubic
yards.21322.5 ÷ 27 = 789.72 cubic yards
When can the live load be calculated by multiplying the
height, width and length of a pour and dividing by the
deadload? - Answer-Never
,2|Page
Tensile strength in concrete is achieved by: - Answer-The
use of steel reinforcement.
Refer to the house plan. What is the total cost for the
foundation slab if the contractor charges $3.54 per square
foot? - Answer-$6524.90
Explanation:
The easiest way to solve for the area of the slab is to
image a full rectangle of the slab and subtract void areas
from the area of the slab.
Rectangle area: 28.167' x 71.5'= 2013.94 sq ftLeft void
area: 6.667' x 1.83' = 12.2 sq ftCenter void area: 11.5' x
1.83' = 21.045 sq ftRight void area: 9.167' x 15' =
137.505Net area of the foundation slab: 2013.94 - 12.2 -
21.045 - 137.505 = 1843.19 sq ft.Calculate the price of the
slab.1843.19 sq ft x $3.54 = $6524.90
What is the minimum spacing of parallel reinforcing bars
placed in two or more layers? - Answer-1 inch
Explanation:
, 3|Page
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
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
