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CSLB CONCRETE C8 LICENSE PRACTICE TEST 1,2,3 AND 4
NEWEST 2026/2027 EXAM NEWEST COMPLETE 300
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BEST BRAND NEW
VERSION||SURE PASS!!!
TEST 1
What is the maximum spacing of the control joints in a slab that
is to receive a floor finish? - ANSWER-joints are not necessary
Explanation:
If the carpet, hardwood floor, or other floor finishes are to be
installed on the slab, the control joints are not necessary since
the floor finishes will cover unsightly cracks in the slab.
Finishing with a steel float: - ANSWER-Reduces risk of cracking.
Please refer to the house plan. How many cubic yards of
concrete is required for the patio (excluding sidewalk), if the
slab is 4 inches thick? - ANSWER-5.75 cubic yards
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Explanation:
Traditional MethodMultiply area of the slab by the thickness of
the slab to get the volume in cubic feet.457 x 4" or .333 =
152.181 cubic feetConvert cubic feet into cubic yards by diving
the cubic feet by 27.152.181 ÷ 27 = 5.6 cubic yards
Industry MethodDivide the area of the slab (sq ft) by 81 to get
cubic yards.457 sq ft ÷ 81 = 5.6 cubic yards
Round up to select the best answer, which is 5.75 cubic yards.
What is the minimum size of anchor bolt can be used in seismic
category D? - ANSWER-#4
Explanation:
The building code requires 1/2" anchor bolt to be used in
seismic category D or less.
What size of footing required for a 2-story building with a load
bearing value of 1,500psf? - ANSWER-15
How many cubic yards of concrete is required for a 4" slab with
the circumference of 25 feet? - ANSWER-3/4 cubic yard(s)
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Explanation:
Since the circumference was provided to calculate the area of
the circle, we need to figure out the diameter and/or radius to
solve the problem.Circumference = 25Diameter =
Circumference (25') ÷ π (or 3.14) = 7.96 feetRadius = Diameter
(7.96') ÷ 2 = 3.98 feetTraditional MethodUse the following
formula:Area of the circle = π x r x rWhere π = 3.14 and radius
(r) = 3.98 feetArea = 3.14 x 3.98 x 3.98Area = 49.74 sq.
ft.Multiply area by the depth of the slab (in feet) to find the
volume in cubic feet.49.74 x .333 = 16.56 cubic feetConvert
cubic feet into cubic yards.16.56 ÷ 27 = 0.61 cu yds (round up to
3/4)Shortcut MethodThis problem can be solved using a much
simpler method. First is to find the area of the square, then
convert it into the area of the circle by multiplying it by
78.5%.Diameter = 7.96'Area of the square = 7.96' x 7.96' =
63.36 square feetArea of the circle = 63.36 x .785 = 49.74
square feetDivide the volume by 81 to solve for the cubic yards
for a 4" slab.49.74 ÷ 81 = 0.61 cu yds (round up to 3/4)
The main field of the slab must be reinforced with an ___ by
___ grid. - ANSWER-18"...18"
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How many cubic yards of concrete is required for a 4" slab with
the radius of 10 feet? - ANSWER-3.87 cubic yards
Explanation:
Traditional MethodUse the following formula:Area of the circle
= π x r x rWhere π = 3.14 and radius (r) = 10 feet (half of the
diameter length)Area = 3.14 x 10 x 10Area = 314 sq. ft.Multiply
area by the depth of the slab (in feet) to find the volume in
cubic feet.314 x .333 = 104.562 cubic feetConvert cubic feet
into cubic yards.104.562 ÷ 27 = 3.87 cubic yardsShortcut
MethodThis problem can be solved using a much simpler
method. First is to find the area of the square, then convert it
into the area of the circle by multiplying it by 78.5%.Diameter =
radius x 2 = 20'Area of the square = 20' x 20' = 400 square
feetArea of the circle = 400 x .785 = 314 square feetDivide the
volume by 81 to solve for the cubic yards for a 4" slab.314 ÷ 81
= 3.87 cubic yards
What is the standard overlap for #4 rebar? - ANSWER-15"
Explanation:
According to the California Building Code, the standard overlap
should be 30 times the diameter of the rebar.30 x ½" = 15"
CSLB CONCRETE C8 LICENSE PRACTICE TEST 1,2,3 AND 4
NEWEST 2026/2027 EXAM NEWEST COMPLETE 300
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BEST BRAND NEW
VERSION||SURE PASS!!!
TEST 1
What is the maximum spacing of the control joints in a slab that
is to receive a floor finish? - ANSWER-joints are not necessary
Explanation:
If the carpet, hardwood floor, or other floor finishes are to be
installed on the slab, the control joints are not necessary since
the floor finishes will cover unsightly cracks in the slab.
Finishing with a steel float: - ANSWER-Reduces risk of cracking.
Please refer to the house plan. How many cubic yards of
concrete is required for the patio (excluding sidewalk), if the
slab is 4 inches thick? - ANSWER-5.75 cubic yards
,2|Page
Explanation:
Traditional MethodMultiply area of the slab by the thickness of
the slab to get the volume in cubic feet.457 x 4" or .333 =
152.181 cubic feetConvert cubic feet into cubic yards by diving
the cubic feet by 27.152.181 ÷ 27 = 5.6 cubic yards
Industry MethodDivide the area of the slab (sq ft) by 81 to get
cubic yards.457 sq ft ÷ 81 = 5.6 cubic yards
Round up to select the best answer, which is 5.75 cubic yards.
What is the minimum size of anchor bolt can be used in seismic
category D? - ANSWER-#4
Explanation:
The building code requires 1/2" anchor bolt to be used in
seismic category D or less.
What size of footing required for a 2-story building with a load
bearing value of 1,500psf? - ANSWER-15
How many cubic yards of concrete is required for a 4" slab with
the circumference of 25 feet? - ANSWER-3/4 cubic yard(s)
,3|Page
Explanation:
Since the circumference was provided to calculate the area of
the circle, we need to figure out the diameter and/or radius to
solve the problem.Circumference = 25Diameter =
Circumference (25') ÷ π (or 3.14) = 7.96 feetRadius = Diameter
(7.96') ÷ 2 = 3.98 feetTraditional MethodUse the following
formula:Area of the circle = π x r x rWhere π = 3.14 and radius
(r) = 3.98 feetArea = 3.14 x 3.98 x 3.98Area = 49.74 sq.
ft.Multiply area by the depth of the slab (in feet) to find the
volume in cubic feet.49.74 x .333 = 16.56 cubic feetConvert
cubic feet into cubic yards.16.56 ÷ 27 = 0.61 cu yds (round up to
3/4)Shortcut MethodThis problem can be solved using a much
simpler method. First is to find the area of the square, then
convert it into the area of the circle by multiplying it by
78.5%.Diameter = 7.96'Area of the square = 7.96' x 7.96' =
63.36 square feetArea of the circle = 63.36 x .785 = 49.74
square feetDivide the volume by 81 to solve for the cubic yards
for a 4" slab.49.74 ÷ 81 = 0.61 cu yds (round up to 3/4)
The main field of the slab must be reinforced with an ___ by
___ grid. - ANSWER-18"...18"
, 4|Page
How many cubic yards of concrete is required for a 4" slab with
the radius of 10 feet? - ANSWER-3.87 cubic yards
Explanation:
Traditional MethodUse the following formula:Area of the circle
= π x r x rWhere π = 3.14 and radius (r) = 10 feet (half of the
diameter length)Area = 3.14 x 10 x 10Area = 314 sq. ft.Multiply
area by the depth of the slab (in feet) to find the volume in
cubic feet.314 x .333 = 104.562 cubic feetConvert cubic feet
into cubic yards.104.562 ÷ 27 = 3.87 cubic yardsShortcut
MethodThis problem can be solved using a much simpler
method. First is to find the area of the square, then convert it
into the area of the circle by multiplying it by 78.5%.Diameter =
radius x 2 = 20'Area of the square = 20' x 20' = 400 square
feetArea of the circle = 400 x .785 = 314 square feetDivide the
volume by 81 to solve for the cubic yards for a 4" slab.314 ÷ 81
= 3.87 cubic yards
What is the standard overlap for #4 rebar? - ANSWER-15"
Explanation:
According to the California Building Code, the standard overlap
should be 30 times the diameter of the rebar.30 x ½" = 15"
