CSLB CONCRETE C8 LICENSE PRACTICE TEST 1, 2, 3 AND 4 WITH
COMPLETE SOLUTIONS 100% VERIFIED NEW!!
-CSLB Concrete C8 License Practice Test 1
-CSLB Concrete C8 License Practice Test 2
-CSLB Concrete C8 License Practice Test 3
-CSLB Concrete C8 License Practice Test 4
CSLB Concrete C8 License Practice Test 1
What is the volume of a cylinder if the diameter is 3 feet and the length equals to 12 feet?
- ANSWER 84.78 cubic feet
Explanation
There are two ways to solve the problem. However, regardless of which method is used,
you need to first determine the area of the circle then multiply it by the length.Traditional
MethodUse the following formula:Area of the circle = π x r x rWhere π = 3.14 and radius
(r) = 1.5 feet (half of the diameter length)Area = 3.14 x 1.5 x 1.5Area = 7.065 sq. ft.
Multiply area by length to find the volume.7.065 x 12 = 84.78 Shortcut Method Area of
circle is 78.5% of the square. Work with the circle as a square and solve for the area.
Find area of the square instead of circle.3' x 3' = 9 sq. ft.Since circle is 78.5% of the
square, multiply area of the square by 78.5% (or.785 if there is no percentage sign on
the calculator).9 sq. ft. x.785 = 7.065 square feetMultiply area by the length to find the
volume.7.065 x 12 = 84.78 cubic feet
Where are spiral rebar ties used? - ANSWER In round columns
Control joints in sidewalks should be spaced at what intervals? - ANSWER Equal to the
width of the slab
,Explanation:
Generally the control joints in sidewalks should be spaced equal to the width of the slab,
but not more than 6 feet apart.
One cubic foot of cement weighs approximately: - ANSWER 95 lbs
How many cubic yard of concrete is required for a 4" slab with the diameter of 15 feet? -
ANSWER 2 ½ cubic yards
Explanation:
Traditional MethodUse the following formula:Area of the circle = π x r x rWhere π = 3.14
and radius (r) = 7.5 feet (half of the diameter length)Area = 3.14 x 7.5 x 7.5Area =
176.625 sq. ft.Multiply area by the depth of the slab (in feet) to find the volume in cubic
feet.176.625 x.333 = 58.82 cubic feetConvert cubic feet into cubic yards.58.82 ÷ 27 =
2.18 cubic yardsSince 2.18 is not a given option, round up the number to 2.5 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%.Area of the square = 15' x 15' = 225 square feetArea of the circle = 225 x .785 =
176.625 square feetDivide the volume by 81 to solve for the cubic yards for a 4"
slab.176.625 ÷ 81 = 2.18 cubic yardsSince 2.18 is not a given option, round up the
number to 2.5 cubic yards
The normal tolerance for the location of bends and ends of reinforcing bar is: -
ANSWER +/- 2 inches
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. Determine the net face area of the trench minus pipe.Face area with pipe: 3 x 5 =
15 square feetArea of the pipe: ????=????????2A = 3.14 x.5 x.5A = 0.785Determine 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. Determine the total volume of the backfill.14.215 x
1500 = 21322.5 cubic feetConvert the volume into cubic yards.21322.5 ÷ 27 = 789.72
cubic yards
,When can the live load be obtained by multiplying the height, width and length of a pour
and divided by the dead load? - ANSWER Never
The tensile strength in concrete is developed by: - ANSWER Steel reinforcement.
Looking at the house plan. What would the total cost of the foundation slab be, if the
contractor charged $3.54 a 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:
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
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
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?
COMPLETE SOLUTIONS 100% VERIFIED NEW!!
-CSLB Concrete C8 License Practice Test 1
-CSLB Concrete C8 License Practice Test 2
-CSLB Concrete C8 License Practice Test 3
-CSLB Concrete C8 License Practice Test 4
CSLB Concrete C8 License Practice Test 1
What is the volume of a cylinder if the diameter is 3 feet and the length equals to 12 feet?
- ANSWER 84.78 cubic feet
Explanation
There are two ways to solve the problem. However, regardless of which method is used,
you need to first determine the area of the circle then multiply it by the length.Traditional
MethodUse the following formula:Area of the circle = π x r x rWhere π = 3.14 and radius
(r) = 1.5 feet (half of the diameter length)Area = 3.14 x 1.5 x 1.5Area = 7.065 sq. ft.
Multiply area by length to find the volume.7.065 x 12 = 84.78 Shortcut Method Area of
circle is 78.5% of the square. Work with the circle as a square and solve for the area.
Find area of the square instead of circle.3' x 3' = 9 sq. ft.Since circle is 78.5% of the
square, multiply area of the square by 78.5% (or.785 if there is no percentage sign on
the calculator).9 sq. ft. x.785 = 7.065 square feetMultiply area by the length to find the
volume.7.065 x 12 = 84.78 cubic feet
Where are spiral rebar ties used? - ANSWER In round columns
Control joints in sidewalks should be spaced at what intervals? - ANSWER Equal to the
width of the slab
,Explanation:
Generally the control joints in sidewalks should be spaced equal to the width of the slab,
but not more than 6 feet apart.
One cubic foot of cement weighs approximately: - ANSWER 95 lbs
How many cubic yard of concrete is required for a 4" slab with the diameter of 15 feet? -
ANSWER 2 ½ cubic yards
Explanation:
Traditional MethodUse the following formula:Area of the circle = π x r x rWhere π = 3.14
and radius (r) = 7.5 feet (half of the diameter length)Area = 3.14 x 7.5 x 7.5Area =
176.625 sq. ft.Multiply area by the depth of the slab (in feet) to find the volume in cubic
feet.176.625 x.333 = 58.82 cubic feetConvert cubic feet into cubic yards.58.82 ÷ 27 =
2.18 cubic yardsSince 2.18 is not a given option, round up the number to 2.5 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%.Area of the square = 15' x 15' = 225 square feetArea of the circle = 225 x .785 =
176.625 square feetDivide the volume by 81 to solve for the cubic yards for a 4"
slab.176.625 ÷ 81 = 2.18 cubic yardsSince 2.18 is not a given option, round up the
number to 2.5 cubic yards
The normal tolerance for the location of bends and ends of reinforcing bar is: -
ANSWER +/- 2 inches
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. Determine the net face area of the trench minus pipe.Face area with pipe: 3 x 5 =
15 square feetArea of the pipe: ????=????????2A = 3.14 x.5 x.5A = 0.785Determine 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. Determine the total volume of the backfill.14.215 x
1500 = 21322.5 cubic feetConvert the volume into cubic yards.21322.5 ÷ 27 = 789.72
cubic yards
,When can the live load be obtained by multiplying the height, width and length of a pour
and divided by the dead load? - ANSWER Never
The tensile strength in concrete is developed by: - ANSWER Steel reinforcement.
Looking at the house plan. What would the total cost of the foundation slab be, if the
contractor charged $3.54 a 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:
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
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
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?
