ACI FLATWORK CERTIFICATION EXAM
(ACTUAL EXAM) WITHQUESTIONS WITH
VERY ELABORATED ANSWERS CORRECTRY
WELL ORGANIZED LATEST 2024 – 2025
ALREADY GRADED A+
Hand trowels used for the first troweling should be short and narrow to increase
the pressure on the concrete surface. - ANSWERS-False
Frenos are long-handled trowels with blades 24 to 48 in. long that are used: -
ANSWERS-for troweling slabs such as sidewalks that do not require a hard-trowel
finish
Float blades for power troweling machines are wider than trowel blades and are
turned up on the edges to prevent them from digging into the surface -
ANSWERS-True
,Some float pans have a bottom profile that varies from flat to slightly curved
upward. When curved pans are used on walk-behind finishing machines. -
ANSWERS-the reduced pan-to-concrete contact cuts drag and eases handling
Delays in discharging concrete trucks can result in the concrete being hard to: -
ANSWERS-pump, place, and finish
When there is room for two concrete trucks ready to discharge into a pump
hopper, placement is faster because: - ANSWERS-as one truck is finishing, the
other is ready to unload the concrete
Concrete from a ready mix truck must usually be completely discharged within
_____ hours after water has been added at the plant. - ANSWERS-1.5
You can tell when water has been added to the concrete truck by looking at the: -
ANSWERS-batch ticket
It is important that the ____________ __________ read and understand project
specifications. - ANSWERS-finisher foreman
If the crew can place and finish 100 yd3 of concrete per hour, the producer's
delivery rate should be about _____ yd3 per hour. - ANSWERS-100
Concrete is sold by the ton? - ANSWERS-False
, When concrete for a slab placement will be discharged from the truck chute,
truck arrivals should usually be spaced at about: - ANSWERS-15 minutes
When finishers get behind because the concrete is setting faster than expected
and the placing crew is also shorthanded, one solution is slowing the concrete
delivery rate to match worker output. - ANSWERS-True
In deciding how much concrete to order for a floor placement, you should
calculate the number of cubic yards needed to fill the forms, then order two to
three cubic yards less so you don't waste concrete that is not needed. -
ANSWERS-False
The question, "What finisher or finishers can request addition of water to the
concrete truck on site?" should be answered at the ______ _________. -
ANSWERS-Pre-construction meeting
Concrete made with portland cement will set and harden while under water. -
ANSWERS-True
If a concrete slab on ground won't be exposed to sulfates, the cement used is
most likely to be: - ANSWERS-Type I
Most concrete used in slabs on ground has coarse aggregate with a maximum size
of: - ANSWERS-3/4 to 1 1/2 in.
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