CSLB Concrete C8 License Practice Test
#4
Which of the following tools is sufficient for the compacting of concrete in a small project? -
ANS-Hand tamper
At 50°F, how long should the concrete be protected to attain sufficient strength (normally 500
Psi)? - ANS-48 Hours
Which of the following arrangements can be used to keep the concrete at the recommended
50°F temperature for allowing proper setting? - ANS-Heaters OR Thermal blankets
What is the 'Swell Factor' for sandy loam soil when performing excavation work for a concrete
structure? - ANS-About 1.1 to 1.2
Which of the following building specification and cost estimating standard systems is accepted
as ASTM standard? - ANS-UniFormat System
Which of the following factors directly impact each other in the process of cost estimation for a
concrete building project? - ANS-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? - ANS-Decomposing of a task into doable, measureable, estimable , and
schedulable units
Which of the following statements is correct about the finishing of a concrete? - ANS-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? - ANS-More
than 10 cubic meters
What type of release oil is commonly used for the construction of wooden forms in the concrete
industry? - ANS-Paraffin base oil
Initial and final setting time values of concrete are normally considered from: - ANS-Mixing of
water into cement material
Form-exposed corners and edges are commonly beveled to avoid any chipping by using: -
ANS-Chamfer strips
, Which of the following are the basic crafts used in estimating the concrete construction cost in
the industry? - ANS-Ironworker, Carpenter, Teamster, Cement mason
Which of the results of a concrete slump test has the highest workability? - ANS-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? -
ANS-78"
Which of the following factors should be estimated as earthwork components in project
planning? - ANS-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? - ANS-Each 100 cubic yards
What are the recommended sizes of granular for a floor slab or foundation of a small-to
medium-size building? - ANS-4" to 6"
Which of the following are the main objectives of applying sealers on exterior concrete
surfaces? - ANS-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? - ANS-Slab curling increases
Which of the following activities are recommended before placing the concrete into the forms? -
ANS-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? - ANS-10 to 12 feet
Explanation:
#4
Which of the following tools is sufficient for the compacting of concrete in a small project? -
ANS-Hand tamper
At 50°F, how long should the concrete be protected to attain sufficient strength (normally 500
Psi)? - ANS-48 Hours
Which of the following arrangements can be used to keep the concrete at the recommended
50°F temperature for allowing proper setting? - ANS-Heaters OR Thermal blankets
What is the 'Swell Factor' for sandy loam soil when performing excavation work for a concrete
structure? - ANS-About 1.1 to 1.2
Which of the following building specification and cost estimating standard systems is accepted
as ASTM standard? - ANS-UniFormat System
Which of the following factors directly impact each other in the process of cost estimation for a
concrete building project? - ANS-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? - ANS-Decomposing of a task into doable, measureable, estimable , and
schedulable units
Which of the following statements is correct about the finishing of a concrete? - ANS-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? - ANS-More
than 10 cubic meters
What type of release oil is commonly used for the construction of wooden forms in the concrete
industry? - ANS-Paraffin base oil
Initial and final setting time values of concrete are normally considered from: - ANS-Mixing of
water into cement material
Form-exposed corners and edges are commonly beveled to avoid any chipping by using: -
ANS-Chamfer strips
, Which of the following are the basic crafts used in estimating the concrete construction cost in
the industry? - ANS-Ironworker, Carpenter, Teamster, Cement mason
Which of the results of a concrete slump test has the highest workability? - ANS-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? -
ANS-78"
Which of the following factors should be estimated as earthwork components in project
planning? - ANS-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? - ANS-Each 100 cubic yards
What are the recommended sizes of granular for a floor slab or foundation of a small-to
medium-size building? - ANS-4" to 6"
Which of the following are the main objectives of applying sealers on exterior concrete
surfaces? - ANS-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? - ANS-Slab curling increases
Which of the following activities are recommended before placing the concrete into the forms? -
ANS-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? - ANS-10 to 12 feet
Explanation:
