Certified Concrete Finisher Examination
Questions And Correct Answers |Rationales 2025
-2026 Q&A | Grdaed A+ | 100 % Guaranteed
Question: It is important that the _______ _______ read and understand project
specifications.
A. Crew leader
B. Pump operator
C. Finishing foreman
D. Concrete supplier
Rationale: The finishing foreman must understand specifications to ensure proper
placement, finishing, and compliance with project requirements.
Question: If the crew can place and finish 100 yd³ (m³) of concrete per hour, the producer's
rate should be about:
A. 90 yd³ (m³)/hr
B. 100 yd³ (m³)/hr
C. 110 yd³ (m³)/hr
D. 120 yd³ (m³)/hr
Rationale: The production rate should match the crew’s placement rate to avoid delays or
excessive waiting.
Question: True or False: Concrete is sold by the ton.
A. True
B. False
Rationale: Concrete is sold by volume (cubic yards or cubic meters), not weight.
Question: Delays in discharging concrete trucks can result in the concrete being hard to:
A. Pump
B. Finish
C. Mix
D. Deliver
,Rationale: Concrete begins to set as soon as water is added, so delays make finishing
difficult.
Question: For a concrete floor slab 6 in. thick, 200 ft long, and 100 ft wide, you should order
____ yd³ of concrete (10% waste factor).
A. 407.41
B. 350
C. 420
D. 390
Rationale: Volume = (thickness × length × width)/27 + 10% = 407.41 yd³.
Metric: For a slab 150 mm thick, 60 m long, 30 m wide, order ____ m³ (10% waste).
A. 297
B. 300
C. 315
D. 280
Rationale: Volume = thickness × length × width × 1.10 = 297 m³.
Question: Placement is faster when there is room for two concrete trucks ready to discharge
because:
A. One truck finishes while the other is ready
B. Crew can take a break
C. Concrete mixes faster
D. Pump requires less power
Rationale: Continuous placement minimizes waiting and keeps the concrete workable.
Question: Concrete from a ready-mix truck must be completely discharged within ____
hours after water has been added at the plant.
A. 1
B. 1.5
C. 2
D. 2.5
Rationale: Delays beyond 1.5 hours reduce workability and can compromise strength.
,Question: You can tell when water was added to the concrete truck by looking at the:
A. Batch ticket
B. Slump cone
C. Pump
D. Chute
Rationale: The batch ticket records mix time, water addition, and batch details.
Question: When concrete will be discharged from the truck chute, truck arrivals should be
spaced about:
A. 10 min
B. 15 min
C. 30 min
D. 1 hr
Rationale: Proper spacing ensures continuous placement without excess waiting or overlap.
Question: True or False: If finishers get behind and concrete sets faster than expected, one
solution is slowing delivery to match worker output.
A. True
B. False
Rationale: Slowing delivery is not standard; production planning should match crew capacity
without compromising quality.
Question: True or False: You should calculate concrete needed and then order slightly less to
avoid waste.
A. True
B. False
Rationale: Standard practice is to order 10–15% more for small orders and 5–10% more for
large orders to account for waste and subgrade variations.
Question: The question “What finisher(s) can request adding water to the truck on site?”
should be answered at the:
A. Preconstruction conference
B. Job briefing
C. Start of the shift
D. Delivery
, Rationale: Responsibilities and procedures are clarified in the preconstruction conference.
Question: True or False: Concrete made with Portland cement will set and harden
underwater.
A. True
B. False
Rationale: Portland cement hydrates in water and gains strength, allowing underwater
applications.
Question: If a concrete slab on ground won’t be exposed to sulfates, the cement used is
most likely:
A. Type I
B. Type II
C. Type III
D. Type IV
Rationale: Type I is standard for general use without sulfate exposure.
Question: Fly ash may be added to concrete from a fly ash silo or from a silo containing:
A. Type II cement
B. Type I cement
C. Type III cement
D. Type IV cement
Rationale: Fly ash is compatible with Type I cement for normal-strength concrete.
Question: Most concrete used in slabs on ground has coarse aggregate with a maximum size
of:
A. 0.5–1 in.
B. 0.75–1.5 in.
C. 2–3 in.
D. 3–4 in.
Rationale: Smaller coarse aggregates improve workability and finishing for slabs-on-ground.
Question: True or False: Sand with the largest allowable amount passing No. 50 and No. 100
sieves is easiest to finish.
Questions And Correct Answers |Rationales 2025
-2026 Q&A | Grdaed A+ | 100 % Guaranteed
Question: It is important that the _______ _______ read and understand project
specifications.
A. Crew leader
B. Pump operator
C. Finishing foreman
D. Concrete supplier
Rationale: The finishing foreman must understand specifications to ensure proper
placement, finishing, and compliance with project requirements.
Question: If the crew can place and finish 100 yd³ (m³) of concrete per hour, the producer's
rate should be about:
A. 90 yd³ (m³)/hr
B. 100 yd³ (m³)/hr
C. 110 yd³ (m³)/hr
D. 120 yd³ (m³)/hr
Rationale: The production rate should match the crew’s placement rate to avoid delays or
excessive waiting.
Question: True or False: Concrete is sold by the ton.
A. True
B. False
Rationale: Concrete is sold by volume (cubic yards or cubic meters), not weight.
Question: Delays in discharging concrete trucks can result in the concrete being hard to:
A. Pump
B. Finish
C. Mix
D. Deliver
,Rationale: Concrete begins to set as soon as water is added, so delays make finishing
difficult.
Question: For a concrete floor slab 6 in. thick, 200 ft long, and 100 ft wide, you should order
____ yd³ of concrete (10% waste factor).
A. 407.41
B. 350
C. 420
D. 390
Rationale: Volume = (thickness × length × width)/27 + 10% = 407.41 yd³.
Metric: For a slab 150 mm thick, 60 m long, 30 m wide, order ____ m³ (10% waste).
A. 297
B. 300
C. 315
D. 280
Rationale: Volume = thickness × length × width × 1.10 = 297 m³.
Question: Placement is faster when there is room for two concrete trucks ready to discharge
because:
A. One truck finishes while the other is ready
B. Crew can take a break
C. Concrete mixes faster
D. Pump requires less power
Rationale: Continuous placement minimizes waiting and keeps the concrete workable.
Question: Concrete from a ready-mix truck must be completely discharged within ____
hours after water has been added at the plant.
A. 1
B. 1.5
C. 2
D. 2.5
Rationale: Delays beyond 1.5 hours reduce workability and can compromise strength.
,Question: You can tell when water was added to the concrete truck by looking at the:
A. Batch ticket
B. Slump cone
C. Pump
D. Chute
Rationale: The batch ticket records mix time, water addition, and batch details.
Question: When concrete will be discharged from the truck chute, truck arrivals should be
spaced about:
A. 10 min
B. 15 min
C. 30 min
D. 1 hr
Rationale: Proper spacing ensures continuous placement without excess waiting or overlap.
Question: True or False: If finishers get behind and concrete sets faster than expected, one
solution is slowing delivery to match worker output.
A. True
B. False
Rationale: Slowing delivery is not standard; production planning should match crew capacity
without compromising quality.
Question: True or False: You should calculate concrete needed and then order slightly less to
avoid waste.
A. True
B. False
Rationale: Standard practice is to order 10–15% more for small orders and 5–10% more for
large orders to account for waste and subgrade variations.
Question: The question “What finisher(s) can request adding water to the truck on site?”
should be answered at the:
A. Preconstruction conference
B. Job briefing
C. Start of the shift
D. Delivery
, Rationale: Responsibilities and procedures are clarified in the preconstruction conference.
Question: True or False: Concrete made with Portland cement will set and harden
underwater.
A. True
B. False
Rationale: Portland cement hydrates in water and gains strength, allowing underwater
applications.
Question: If a concrete slab on ground won’t be exposed to sulfates, the cement used is
most likely:
A. Type I
B. Type II
C. Type III
D. Type IV
Rationale: Type I is standard for general use without sulfate exposure.
Question: Fly ash may be added to concrete from a fly ash silo or from a silo containing:
A. Type II cement
B. Type I cement
C. Type III cement
D. Type IV cement
Rationale: Fly ash is compatible with Type I cement for normal-strength concrete.
Question: Most concrete used in slabs on ground has coarse aggregate with a maximum size
of:
A. 0.5–1 in.
B. 0.75–1.5 in.
C. 2–3 in.
D. 3–4 in.
Rationale: Smaller coarse aggregates improve workability and finishing for slabs-on-ground.
Question: True or False: Sand with the largest allowable amount passing No. 50 and No. 100
sieves is easiest to finish.
