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CSLB CONCRETE C8 LICENSE P RACTICE TEST
1,2,3 AND 4 NEWEST 2025 EXAM NEWEST 2024-
2025 COMPLETE 300 QUESTIONS AND
CORRECT DETAILED ANSWERS ( VERIFIED
ANSWERS) |ALREADY GRADED A+ ||BRAND
NEW!!
TEST 1
What is the area of the circle if the diameter is 20 feet? - ANSWER-314 sq. ft.
Explanation:
There are two ways to solve for the area of the
circle.Traditional MethodUse the following formula:Area of
the circle = π x r x rWhere π = 3.14 and radius (r) = 10 (half of the diameter)Area = 3.14 x 10 x 10Area = 314 sq. ft.Shortcut MethodArea of the circle is 78.5% of the square.Treat the circle as a square and solve for the area.Step 1.Find the area of the square instead of the circle.20' x 20' = 400 sq. ft.Step 2. Since a circle is 78.5% of the square, multiply the area of the square by 78.5% (or .785 if there is no percentage sign on the calculator).400 sq. ft. x .785 = 314 sq ft 1 / 4
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A standard truck load of concrete is around 10 cubic yards of material. In a pour with an average depth of 8 inches, and a width and length of 12 by 32 feet, how much will the second truck need to bring? - ANSWER-One load was enough
Explanation:
Step 1. Solve for the volume of the pour: 12 x 32 x 8/12 (or
0.667) = 256.128 cubic feetStep 2. Convert cubic feet into cubic yards.256.128 ÷ 27 = 9.49 cubic yardsSince one truck carries 10 cubic yards of concrete, one truck will be enough for the pour.
To ensure proper grounding, the grounding electrode must be encased by how many inches of concrete? - ANSWER-2"
Explanation:
To ensure proper grounding, the electrode must meet the
following criteria:1. Must be encased by 2 or more inches of
concrete2. Electrode must be at or near the bottom of the footing or foundation3. Concrete must be in contact with the ground4. At least 20 feet of rebar that is at least ½" thick or 20 feet of solid copper as a conductor
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Required reinforcement bar splicing length or lap length is a
function of: - ANSWER-ALL
-Diameter of the reinforced bar.
-Stress in the reinforced bar at the cross section of splicing.
-Bond-strength between the reinforcing bar and the concrete.
Bundled reinforcing bars are normally required to have a minimum cover of at least the diameter of the bundle, except in the case of permanent proximity to earth where the minimum
will be: - ANSWER-3 inches
Releasing agent is used on forms, why is over use a problem? - ANSWER-Oil in the water makes concrete that is less strong.
There are many surface finishes that can be applied to smooth
finished concrete, including: Stain, Paint, Stenciling Oil,
Varnish, Epoxy. What considerations should be taken into account before application? - ANSWER-Depends on finish to be applied.
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Strength tests are normally: - ANSWER-The average of 2 tests
at a specified time, taken from the same pour.
A mix with a higher percentage of rock has the advantage of: -
ANSWER-Being less expensive.
For quick dry applications you would most commonly use which kind of concrete? - ANSWER-Type 3
You have 5 employees that work for eight hours. How much would you have to pay your employees, if one of them is an apprentice who makes $17/hour, supervisor makes $33/hour, and three journeymen make $22/hour? - ANSWER-$928.00
Explanation:
Apprentice: $17 x 8 hours = $136Supervisor: $33 x 8 hours = $264Journeymen: 3 x $22 x 8 hours = $528Total: $136 + $264 +
$528 = $928
Refer to the house plan. How many square feet is the foundation slab? - ANSWER-1844 sq ft
Explanation:
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