CONCRETE FLATWORK TECH AND FLATWORK FINISHER
UPDATED FINAL EXAM QUESTIONS AND ANSWERS SURE
A+
✔✔boom; output - ✔✔(Ch. 5, #9) When boom pumps are used to place concrete, two
important equipment features are ____ reach and delivery ______.
✔✔allowing enough space near the boom pump so as one truck is finishing the other is
ready to unload concrete - ✔✔(Ch. 5, #10) When using a boom pump to place concrete
for a slab on ground you can minimize delays by:
✔✔short handled, square-ended shovels - ✔✔(Ch. 6, #1) Tools commonly used for
hand spreading concrete in slabs include:
✔✔20 - ✔✔(Ch. 6, #2) Bull floats are used after screeding when the specified F-number
floor flatness is ____ or less.
✔✔False (bull floating is done *before* bleed water comes to the surface) - ✔✔(Ch. 6,
#3) True or False: Bull floating must be done after all of the bleed water has evaporated
from the surface.
✔✔Wood - ✔✔(Ch. 6, #4) _____ bull floats are less likely to seal the surface.
✔✔air-entrained; lightweight - ✔✔(Ch. 6, #5) Magnesium bull floats are recommended
for use on ___________ concrete and ___________ concrete.
✔✔control the tilt of the head to keep the blade as flat as possible - ✔✔(Ch. 6, #6)
When using a magnesium bull float, sealing the concrete surface is less likely if you:
✔✔True - ✔✔(Ch. 6, #7) True or False: Highway straightedges are used instead of bull
floats when high F(f) numbers for floors are specified.
✔✔Made of wood or magnesium; used for the same purpose as bull floats; particularly
useful near side forms when a long-handled bull float is hard to manipulate around
obstructions or penetrations - ✔✔(Ch. 6, #8) Darbies are long, hand-held floats that are:
✔✔rounded; exterior - ✔✔(Ch. 6, #9) Edgers are used to make neat, ______ edges
primarily on _________ concrete.
✔✔cut grooves to a depth of 1/4 the slab thickness for contraction joints in exterior
concrete - ✔✔(Ch. 6, #10) Groovers are used primarily to:
, ✔✔are best for non-air-entrained concrete or high-slump concrete - ✔✔(Ch. 6, #11)
Wood hand floats:
✔✔False (*larger* trowels are used for the first troweling to spread the force out over a
larger area. Once the surface becomes harder, subsequent trowelings are done with
smaller trowels to increase pressure on the surface.) - ✔✔(Ch. 6, #12) True or False:
Hand trowels used for the first troweling should be short and narrow to increase the
pressure on the concrete surface.
✔✔for troweling slabs such as sidewalks that do not require a hard-trowel finish -
✔✔(Ch. 6, #13) Fresnos are long-handled trowels with blades 24 to 48 in. (600 to 1200
mm) long that are used:
✔✔True - ✔✔(Ch. 6, #14) True or False: Float blades for power troweling machines are
wider than trowel blades and turned up on the edges to prevent them from digging into
the surface.
✔✔the reduced pan-to-concrete contact cuts drag and eases handling - ✔✔(Ch. 6, #15)
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:
✔✔36 - ✔✔(Ch. 6, #16) A ___ in diameter pan is the largest size commonly used on
walk-behind machines because the finisher can guide the machine more easily than
with larger pans.
✔✔True - ✔✔(Ch. 6, #17) True or False: Power trowels can be used for floating or
troweling.
✔✔all - ✔✔(Ch. 6, #18) When one bent or broken blade on a double- or triple-rotor
troweling machine is replaced _____ blades should be replaced.
✔✔temporary pipes or rails; edge forms; the top of the edge of adjacent hardened
concrete - ✔✔(Ch. 7, #1) Rigid supports for a straightedge used to strike off concrete
can be:
✔✔Make sure there is always enough concrete ahead of the straightedge. - ✔✔(Ch. 7,
#2) How can workers avoid low spots when using hand-operated straightedges?
✔✔wet screeds - ✔✔(Ch. 7, #3) Hand-held vibrating screeds are often useful when
striking off concrete with __________ _________.
✔✔True - ✔✔(Ch. 7, #4) True or False: Vibrating screeds should be moved forward as
fast as proper consolidation allows to avoid bringing too much mortar to the surface.
UPDATED FINAL EXAM QUESTIONS AND ANSWERS SURE
A+
✔✔boom; output - ✔✔(Ch. 5, #9) When boom pumps are used to place concrete, two
important equipment features are ____ reach and delivery ______.
✔✔allowing enough space near the boom pump so as one truck is finishing the other is
ready to unload concrete - ✔✔(Ch. 5, #10) When using a boom pump to place concrete
for a slab on ground you can minimize delays by:
✔✔short handled, square-ended shovels - ✔✔(Ch. 6, #1) Tools commonly used for
hand spreading concrete in slabs include:
✔✔20 - ✔✔(Ch. 6, #2) Bull floats are used after screeding when the specified F-number
floor flatness is ____ or less.
✔✔False (bull floating is done *before* bleed water comes to the surface) - ✔✔(Ch. 6,
#3) True or False: Bull floating must be done after all of the bleed water has evaporated
from the surface.
✔✔Wood - ✔✔(Ch. 6, #4) _____ bull floats are less likely to seal the surface.
✔✔air-entrained; lightweight - ✔✔(Ch. 6, #5) Magnesium bull floats are recommended
for use on ___________ concrete and ___________ concrete.
✔✔control the tilt of the head to keep the blade as flat as possible - ✔✔(Ch. 6, #6)
When using a magnesium bull float, sealing the concrete surface is less likely if you:
✔✔True - ✔✔(Ch. 6, #7) True or False: Highway straightedges are used instead of bull
floats when high F(f) numbers for floors are specified.
✔✔Made of wood or magnesium; used for the same purpose as bull floats; particularly
useful near side forms when a long-handled bull float is hard to manipulate around
obstructions or penetrations - ✔✔(Ch. 6, #8) Darbies are long, hand-held floats that are:
✔✔rounded; exterior - ✔✔(Ch. 6, #9) Edgers are used to make neat, ______ edges
primarily on _________ concrete.
✔✔cut grooves to a depth of 1/4 the slab thickness for contraction joints in exterior
concrete - ✔✔(Ch. 6, #10) Groovers are used primarily to:
, ✔✔are best for non-air-entrained concrete or high-slump concrete - ✔✔(Ch. 6, #11)
Wood hand floats:
✔✔False (*larger* trowels are used for the first troweling to spread the force out over a
larger area. Once the surface becomes harder, subsequent trowelings are done with
smaller trowels to increase pressure on the surface.) - ✔✔(Ch. 6, #12) True or False:
Hand trowels used for the first troweling should be short and narrow to increase the
pressure on the concrete surface.
✔✔for troweling slabs such as sidewalks that do not require a hard-trowel finish -
✔✔(Ch. 6, #13) Fresnos are long-handled trowels with blades 24 to 48 in. (600 to 1200
mm) long that are used:
✔✔True - ✔✔(Ch. 6, #14) True or False: Float blades for power troweling machines are
wider than trowel blades and turned up on the edges to prevent them from digging into
the surface.
✔✔the reduced pan-to-concrete contact cuts drag and eases handling - ✔✔(Ch. 6, #15)
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:
✔✔36 - ✔✔(Ch. 6, #16) A ___ in diameter pan is the largest size commonly used on
walk-behind machines because the finisher can guide the machine more easily than
with larger pans.
✔✔True - ✔✔(Ch. 6, #17) True or False: Power trowels can be used for floating or
troweling.
✔✔all - ✔✔(Ch. 6, #18) When one bent or broken blade on a double- or triple-rotor
troweling machine is replaced _____ blades should be replaced.
✔✔temporary pipes or rails; edge forms; the top of the edge of adjacent hardened
concrete - ✔✔(Ch. 7, #1) Rigid supports for a straightedge used to strike off concrete
can be:
✔✔Make sure there is always enough concrete ahead of the straightedge. - ✔✔(Ch. 7,
#2) How can workers avoid low spots when using hand-operated straightedges?
✔✔wet screeds - ✔✔(Ch. 7, #3) Hand-held vibrating screeds are often useful when
striking off concrete with __________ _________.
✔✔True - ✔✔(Ch. 7, #4) True or False: Vibrating screeds should be moved forward as
fast as proper consolidation allows to avoid bringing too much mortar to the surface.
