CSLB Concrete C8 License Practice Test
#4 Questions And Well Explained
Answers
Which of the following factors directly impact each other in the process of cost estimation for a
concrete building project? - answer Interest rate, Holding cost, Cost escalation
Which of the following points are true about Work Breakdown Structure (WBS) in the planning
of a construction project? - answer Decomposing of a task into doable, measureable, estimable ,
and schedulable units
Which of the following statements is correct about the finishing of a concrete? - answer
Concrete should be finished once bleed water and surface sheen disappear
An excavation of 10 cubic meters is done on any soil. Which of the following statements is true
about the refilling volume of that excavation with the same type of soil material? - answer More
than 10 cubic meters
What type of release oil is commonly used for the construction of wooden forms in the concrete
industry? - answer Paraffin base oil
Initial and final setting time values of concrete are normally considered from: - answer Mixing
of water into cement material
Form-exposed corners and edges are commonly beveled to avoid any chipping by using: -
answer Chamfer strips
Which of the following are the basic crafts used in estimating the concrete construction cost in
the industry? - answer Ironworker, Carpenter, Teamster, Cement mason
Which of the results of a concrete slump test has the highest workability? - answer True Slump
Explanation:
Workability is the ease or difficulty of placing concrete in a particular location. For example, a
stiff but plastic mix with large aggregate would be workable in large open form but not in a wall
with closely spaced reinforcement. Please note that the slump test is NOT a measure of
, workability, and it should not be used to compare mixes of entirely different proportions or
containing different kinds of aggregate.
What is the maximum depth of a foundation footing commonly used in concrete construction? -
answer 78"
Which of the following factors should be estimated as earthwork components in project
planning? - answer ALL OF THESE
-Rough grading, Excavation, Soil backfilling
-Soil compacting, Fill material compacting, Excavation
-Excavated soil hauling, Soil backfilling, Rough grading
According to American Concrete Institute ACI-301 standard, what is the maximum volume of
concrete that requires a strength test of concrete? - answer Each 100 cubic yards
What are the recommended sizes of granular for a floor slab or foundation of a small-to
medium-size building? - answer 4" to 6"
Which of the following are the main objectives of applying sealers on exterior concrete
surfaces? - answer To keep salt and water out of the concrete
What is the slab curling impact of direct placement of concrete on the moisture barrier as
indicated by American Concrete Institute guidelines? - answer Slab curling increases
Which of the following activities are recommended before placing the concrete into the forms? -
answer Application of form release oil and water
Which of the following is the standard spacing commonly used between two adjacent expansion
joints on a 4" thick concrete slab? - answer 10 to 12 feet
Explanation:
The general rule of thumb is that the spacing should be 2 ½ feet for each single inch of slab
thickness.
Which of the following characteristics should be available in a good sealant compound
commonly used for expansion joint treatment? - answer ALL
#4 Questions And Well Explained
Answers
Which of the following factors directly impact each other in the process of cost estimation for a
concrete building project? - answer Interest rate, Holding cost, Cost escalation
Which of the following points are true about Work Breakdown Structure (WBS) in the planning
of a construction project? - answer Decomposing of a task into doable, measureable, estimable ,
and schedulable units
Which of the following statements is correct about the finishing of a concrete? - answer
Concrete should be finished once bleed water and surface sheen disappear
An excavation of 10 cubic meters is done on any soil. Which of the following statements is true
about the refilling volume of that excavation with the same type of soil material? - answer More
than 10 cubic meters
What type of release oil is commonly used for the construction of wooden forms in the concrete
industry? - answer Paraffin base oil
Initial and final setting time values of concrete are normally considered from: - answer Mixing
of water into cement material
Form-exposed corners and edges are commonly beveled to avoid any chipping by using: -
answer Chamfer strips
Which of the following are the basic crafts used in estimating the concrete construction cost in
the industry? - answer Ironworker, Carpenter, Teamster, Cement mason
Which of the results of a concrete slump test has the highest workability? - answer True Slump
Explanation:
Workability is the ease or difficulty of placing concrete in a particular location. For example, a
stiff but plastic mix with large aggregate would be workable in large open form but not in a wall
with closely spaced reinforcement. Please note that the slump test is NOT a measure of
, workability, and it should not be used to compare mixes of entirely different proportions or
containing different kinds of aggregate.
What is the maximum depth of a foundation footing commonly used in concrete construction? -
answer 78"
Which of the following factors should be estimated as earthwork components in project
planning? - answer ALL OF THESE
-Rough grading, Excavation, Soil backfilling
-Soil compacting, Fill material compacting, Excavation
-Excavated soil hauling, Soil backfilling, Rough grading
According to American Concrete Institute ACI-301 standard, what is the maximum volume of
concrete that requires a strength test of concrete? - answer Each 100 cubic yards
What are the recommended sizes of granular for a floor slab or foundation of a small-to
medium-size building? - answer 4" to 6"
Which of the following are the main objectives of applying sealers on exterior concrete
surfaces? - answer To keep salt and water out of the concrete
What is the slab curling impact of direct placement of concrete on the moisture barrier as
indicated by American Concrete Institute guidelines? - answer Slab curling increases
Which of the following activities are recommended before placing the concrete into the forms? -
answer Application of form release oil and water
Which of the following is the standard spacing commonly used between two adjacent expansion
joints on a 4" thick concrete slab? - answer 10 to 12 feet
Explanation:
The general rule of thumb is that the spacing should be 2 ½ feet for each single inch of slab
thickness.
Which of the following characteristics should be available in a good sealant compound
commonly used for expansion joint treatment? - answer ALL
