1 Exampromax - Stuvia US
Concrete Batch Plant Operator Exam (FDOT)
Questions and Answers 100% Correct Answers
Already Graded A+
Q: Stockpiles of aggregate shall be maintained in a well-drained condition
in order to:
Ans: Minimize Free Water Content
Q: Coarse aggregate stockpiles must be sprinkled for at lest how many
hours prior to batch for FDOT?
Exampromax - Stuvia US
Ans: 24
Q: Free moisture of the aggregate means:
Ans: Moister on the surface of an aggregate that is above and beyond the
absorbed moister in the aggregate.
Q: If the moister test is done other than by the cook-out method, how often
shall the other methods be verified?
Ans: Each week
Q: For drill shaft concrete, the quantity of cement replaced with fly ash
shall be:
Ans: 33 thru 37%
Q: In concrete, which material has a specific gravity of one?
Ans: Water
Q: What is the air content range for all classes of structural concrete except
Class IV Shaft?
, 2 Exampromax - Stuvia US
Ans: 1.00 thru 6.00%
Q: When can unmetered water be added to the concrete?
Ans: Not at all.
Q: Do not allow the total number of revolution at mixing speed to exceed:
Ans: 160 Revolutions
Q: After all materials have been charged into the transit mixer drum, the
concrete must be mixed at how many revolutions at the plant before leaving
for the project?
Ans: 70 to 100
Exampromax - Stuvia US
Q: When the water meters / scales are calibrated, prior to production, at
what frequency should they be checked there after?
Ans: 3 moths
Q: To what accuracy should the scales for weighing cement , pozzolan,
slag and aggregates at the plant be maintained
Ans: 0.5% of maximum load normally handled
Q: For concrete containing a water-reducing retarding admixture, in an
agitator truck, the maximum time for depositing the concrete shall not
exceed:
Ans: 90 minutes
Q: If a load of concrete has been rejected due to excessive slump, the
concrete may remain in the transporting vehicle to reduce the slump.
Ans: Is not allowed.
Q: Who places the orders for concrete with the producer?
Ans: The contractor
Concrete Batch Plant Operator Exam (FDOT)
Questions and Answers 100% Correct Answers
Already Graded A+
Q: Stockpiles of aggregate shall be maintained in a well-drained condition
in order to:
Ans: Minimize Free Water Content
Q: Coarse aggregate stockpiles must be sprinkled for at lest how many
hours prior to batch for FDOT?
Exampromax - Stuvia US
Ans: 24
Q: Free moisture of the aggregate means:
Ans: Moister on the surface of an aggregate that is above and beyond the
absorbed moister in the aggregate.
Q: If the moister test is done other than by the cook-out method, how often
shall the other methods be verified?
Ans: Each week
Q: For drill shaft concrete, the quantity of cement replaced with fly ash
shall be:
Ans: 33 thru 37%
Q: In concrete, which material has a specific gravity of one?
Ans: Water
Q: What is the air content range for all classes of structural concrete except
Class IV Shaft?
, 2 Exampromax - Stuvia US
Ans: 1.00 thru 6.00%
Q: When can unmetered water be added to the concrete?
Ans: Not at all.
Q: Do not allow the total number of revolution at mixing speed to exceed:
Ans: 160 Revolutions
Q: After all materials have been charged into the transit mixer drum, the
concrete must be mixed at how many revolutions at the plant before leaving
for the project?
Ans: 70 to 100
Exampromax - Stuvia US
Q: When the water meters / scales are calibrated, prior to production, at
what frequency should they be checked there after?
Ans: 3 moths
Q: To what accuracy should the scales for weighing cement , pozzolan,
slag and aggregates at the plant be maintained
Ans: 0.5% of maximum load normally handled
Q: For concrete containing a water-reducing retarding admixture, in an
agitator truck, the maximum time for depositing the concrete shall not
exceed:
Ans: 90 minutes
Q: If a load of concrete has been rejected due to excessive slump, the
concrete may remain in the transporting vehicle to reduce the slump.
Ans: Is not allowed.
Q: Who places the orders for concrete with the producer?
Ans: The contractor
