MICHIGAN BUILDERS LICENSE FINAL EXAM ACTUAL
QUESTIONS AND ANSWERS SURE A+
✔✔Prevent evaporation. - ✔✔There are two ways to insure proper curing of concrete:
apply water to make up for water lost due to evaporation, and
✔✔True. - ✔✔When pouring concrete, the concrete should be placed near its required
point. Excessive handling of the concrete weakens it. T or F
✔✔Never acceptable. - ✔✔Pouring concrete on frozen earth is:
✔✔1/2" - ✔✔The diameter of a No. 4 deformed bar is:
✔✔All of the above. - ✔✔Which of the following are true in regard to cold-weather
construction?
calcium chloride is added to concrete to help it set quickly.
insulation of straw, hay, or polyethylene is placed around concrete footings.
concrete block walls are usually laid with heated mortar.
all of the above
✔✔1/4 the thickness. - ✔✔When sawing a control joint in a concrete slab, the joint must
be a minimum of how deep?
✔✔Middle one third. - ✔✔Rebar placement for a footing should be in the
________________________ of the footing depth.
✔✔Chairs. - ✔✔The most precise way of positioning rebar for a slab is to use:
✔✔True. - ✔✔Chairs are classified according to their degree of rust protection. Class #1
is the maximum protection, class #2 is moderate protection, and class #3 is no
protection. T or F
✔✔Curing. - ✔✔Proper __________________ prevents most problems in the finished
concrete. Methods used to ensure a high quality, finished product, include a sprayed on
membrane curing compound, polyethylene sheets, waterproof paper or wet burlap.
✔✔Slump cone. - ✔✔A _________________ is a 12" high cone which determines the
amount of water in the mix.
✔✔5% to 7% - ✔✔In cases of severe cold weather exposure, the air content in a
concrete mix should be about:
✔✔Scale or spall. - ✔✔If concrete is exposed to de-icers and it is not air entrained, it
will:
,✔✔Scaling. - ✔✔When concrete becomes flaky and fragmented on the surface, this is
called:
✔✔One quarter the space between side forms
Three quarters the space between reinforcing bars
One third the depth of the slab on ground - ✔✔The maximum size aggregate is limited
to the lesser of:
✔✔150 lbs. - ✔✔How much does one cubic foot of concrete weigh?
✔✔28 days. - ✔✔Concrete is considered to be fully cured or set after
______________days.
✔✔True. - ✔✔Air entrainment protects concrete from frost damage, but also makes
concrete more workable. For that reason, not as much water is necessary for the mix. T
or F
✔✔Retarders. - ✔✔On hot sunny days in the summertime, a contractor may decide to
use ____________ to slow down the setting time of concrete.
✔✔Cement, sand, water, and gravel. - ✔✔Concrete is made by mixing:
✔✔Cause it to shrink more
Weaken it
Cause it to crack more - ✔✔Adding too much water to a concrete mix will
_______________ it.
✔✔Screeding - ✔✔_________________ concrete is the process of leveling the freshly
poured concrete before it is floated.
✔✔True - ✔✔Floating of the freshly screeded concrete is accomplished with a wood or
magnesium bullfloat which smoothes out, levels, compacts and brings the small
particles to the surface for finishing. T or F
✔✔Power trowel. - ✔✔On large areas, it may be necessary to use a
__________________ to finish the surface area.
✔✔Non-slip surface. - ✔✔On sidewalk surfaces, it is necessary to broom the surface of
concrete to provide a:
✔✔Cure. - ✔✔It is necessary to maintain the temperature above 50 degrees in order for
concrete to properly:
,✔✔2" - ✔✔Welded wire mesh should be placed ___________ from the top of concrete
slab surface.
✔✔Efflorescence. - ✔✔The white salty powder that forms on the finished surface of
concrete is called
✔✔Slab. - ✔✔A concrete floor may also be called a:
✔✔The top cures faster. - ✔✔Concrete slabs on grade have a tendency to curl
because:
✔✔Power screed. - ✔✔As concrete is placed in a form it needs to be leveled off. This
can be done manually or mechanically with a
✔✔Movement, expansion or contraction. - ✔✔A control joint allows for what?
✔✔To slow down the setting time of concrete. - ✔✔What is the purpose of adding
retarders to a concrete mixture?
✔✔Water reducers. - ✔✔What is added to make concrete more workable with less
water?
✔✔10' - ✔✔A one car driveway should have a minimum width of?
✔✔18' - ✔✔A two car wide driveway is usually how wide?
✔✔3" - ✔✔Where concrete is cast against and permanently exposed to the earth,
reinforcement steel should be __________________ from the earth.
✔✔Increase the slump to the level specified in the mix design. - ✔✔In most
specifications, adding water to a batch of concrete is permitted only one time at the job
site as long as the water/cement ratio is not exceeded. This would be done in order to:
✔✔Lower the cement factor and increase the size of the aggregate. - ✔✔A method to
prevent cast concrete from excessive shrinking is to:
✔✔Control random cracking. - ✔✔Contraction joints, also known as control joints, in a
slab are used to:
✔✔Movement - ✔✔Isolation joints isolate differing parts of a structure to permit
independent:
, ✔✔Construction joints. - ✔✔________________________ are a convenient way to limit
the size of the placement of concrete to a manageable volume and are a stopping place
for a day's work.
✔✔Base. - ✔✔For a slab placed below grade, it is necessary to provide at least 4" of
crushed gravel or stone. This should be compacted. It will prevent moisture from
collecting under the slab. This 4" area is known as ________________________.
✔✔At least 12 hours. - ✔✔The timing for the removal of forms is important. The
concrete has to achieve a strength great enough to support its own weight and the
weight of any construction loads placed upon it. General guidelines for wall and column
form removal is _________________________ after placement.
✔✔Rich concrete. - ✔✔Concrete that has a lot of Portland cement in the mix may be
referred to as:
✔✔Improves ductility and reduces surface cracks. - ✔✔What is the reason for using
fiber reinforcement in concrete?
✔✔Form release agent (oil). - ✔✔What is used to prevent concrete from sticking to
wood forms?
✔✔Calcium chloride. - ✔✔The most commonly used additive to help concrete set
rapidly and more cohesively is:
✔✔Tool for leveling concrete. - ✔✔What is a screed?
✔✔90 minutes. - ✔✔With the exception of special conditions, maximum delivery time
between the water being mixed with the Portland cement in batching and the time of
completion of discharge from a transit-mix truck is
✔✔Prevent cracks from opening. - ✔✔What is the sole purpose for welded wire fabric in
a floor slab?
✔✔True. - ✔✔The reason for tying reinforcing bars with tie wire is to keep the rebar in
place while pouring. It does not add any additional stength to the concrete. T or F
✔✔Stay-in-place forms. - ✔✔Concrete slabs poured above grade are often supported
by ribbed or corrugated steel decking. These forms are called
✔✔False. - ✔✔Rebar is placed in concrete mainly to improve its compression strength.
T or F
QUESTIONS AND ANSWERS SURE A+
✔✔Prevent evaporation. - ✔✔There are two ways to insure proper curing of concrete:
apply water to make up for water lost due to evaporation, and
✔✔True. - ✔✔When pouring concrete, the concrete should be placed near its required
point. Excessive handling of the concrete weakens it. T or F
✔✔Never acceptable. - ✔✔Pouring concrete on frozen earth is:
✔✔1/2" - ✔✔The diameter of a No. 4 deformed bar is:
✔✔All of the above. - ✔✔Which of the following are true in regard to cold-weather
construction?
calcium chloride is added to concrete to help it set quickly.
insulation of straw, hay, or polyethylene is placed around concrete footings.
concrete block walls are usually laid with heated mortar.
all of the above
✔✔1/4 the thickness. - ✔✔When sawing a control joint in a concrete slab, the joint must
be a minimum of how deep?
✔✔Middle one third. - ✔✔Rebar placement for a footing should be in the
________________________ of the footing depth.
✔✔Chairs. - ✔✔The most precise way of positioning rebar for a slab is to use:
✔✔True. - ✔✔Chairs are classified according to their degree of rust protection. Class #1
is the maximum protection, class #2 is moderate protection, and class #3 is no
protection. T or F
✔✔Curing. - ✔✔Proper __________________ prevents most problems in the finished
concrete. Methods used to ensure a high quality, finished product, include a sprayed on
membrane curing compound, polyethylene sheets, waterproof paper or wet burlap.
✔✔Slump cone. - ✔✔A _________________ is a 12" high cone which determines the
amount of water in the mix.
✔✔5% to 7% - ✔✔In cases of severe cold weather exposure, the air content in a
concrete mix should be about:
✔✔Scale or spall. - ✔✔If concrete is exposed to de-icers and it is not air entrained, it
will:
,✔✔Scaling. - ✔✔When concrete becomes flaky and fragmented on the surface, this is
called:
✔✔One quarter the space between side forms
Three quarters the space between reinforcing bars
One third the depth of the slab on ground - ✔✔The maximum size aggregate is limited
to the lesser of:
✔✔150 lbs. - ✔✔How much does one cubic foot of concrete weigh?
✔✔28 days. - ✔✔Concrete is considered to be fully cured or set after
______________days.
✔✔True. - ✔✔Air entrainment protects concrete from frost damage, but also makes
concrete more workable. For that reason, not as much water is necessary for the mix. T
or F
✔✔Retarders. - ✔✔On hot sunny days in the summertime, a contractor may decide to
use ____________ to slow down the setting time of concrete.
✔✔Cement, sand, water, and gravel. - ✔✔Concrete is made by mixing:
✔✔Cause it to shrink more
Weaken it
Cause it to crack more - ✔✔Adding too much water to a concrete mix will
_______________ it.
✔✔Screeding - ✔✔_________________ concrete is the process of leveling the freshly
poured concrete before it is floated.
✔✔True - ✔✔Floating of the freshly screeded concrete is accomplished with a wood or
magnesium bullfloat which smoothes out, levels, compacts and brings the small
particles to the surface for finishing. T or F
✔✔Power trowel. - ✔✔On large areas, it may be necessary to use a
__________________ to finish the surface area.
✔✔Non-slip surface. - ✔✔On sidewalk surfaces, it is necessary to broom the surface of
concrete to provide a:
✔✔Cure. - ✔✔It is necessary to maintain the temperature above 50 degrees in order for
concrete to properly:
,✔✔2" - ✔✔Welded wire mesh should be placed ___________ from the top of concrete
slab surface.
✔✔Efflorescence. - ✔✔The white salty powder that forms on the finished surface of
concrete is called
✔✔Slab. - ✔✔A concrete floor may also be called a:
✔✔The top cures faster. - ✔✔Concrete slabs on grade have a tendency to curl
because:
✔✔Power screed. - ✔✔As concrete is placed in a form it needs to be leveled off. This
can be done manually or mechanically with a
✔✔Movement, expansion or contraction. - ✔✔A control joint allows for what?
✔✔To slow down the setting time of concrete. - ✔✔What is the purpose of adding
retarders to a concrete mixture?
✔✔Water reducers. - ✔✔What is added to make concrete more workable with less
water?
✔✔10' - ✔✔A one car driveway should have a minimum width of?
✔✔18' - ✔✔A two car wide driveway is usually how wide?
✔✔3" - ✔✔Where concrete is cast against and permanently exposed to the earth,
reinforcement steel should be __________________ from the earth.
✔✔Increase the slump to the level specified in the mix design. - ✔✔In most
specifications, adding water to a batch of concrete is permitted only one time at the job
site as long as the water/cement ratio is not exceeded. This would be done in order to:
✔✔Lower the cement factor and increase the size of the aggregate. - ✔✔A method to
prevent cast concrete from excessive shrinking is to:
✔✔Control random cracking. - ✔✔Contraction joints, also known as control joints, in a
slab are used to:
✔✔Movement - ✔✔Isolation joints isolate differing parts of a structure to permit
independent:
, ✔✔Construction joints. - ✔✔________________________ are a convenient way to limit
the size of the placement of concrete to a manageable volume and are a stopping place
for a day's work.
✔✔Base. - ✔✔For a slab placed below grade, it is necessary to provide at least 4" of
crushed gravel or stone. This should be compacted. It will prevent moisture from
collecting under the slab. This 4" area is known as ________________________.
✔✔At least 12 hours. - ✔✔The timing for the removal of forms is important. The
concrete has to achieve a strength great enough to support its own weight and the
weight of any construction loads placed upon it. General guidelines for wall and column
form removal is _________________________ after placement.
✔✔Rich concrete. - ✔✔Concrete that has a lot of Portland cement in the mix may be
referred to as:
✔✔Improves ductility and reduces surface cracks. - ✔✔What is the reason for using
fiber reinforcement in concrete?
✔✔Form release agent (oil). - ✔✔What is used to prevent concrete from sticking to
wood forms?
✔✔Calcium chloride. - ✔✔The most commonly used additive to help concrete set
rapidly and more cohesively is:
✔✔Tool for leveling concrete. - ✔✔What is a screed?
✔✔90 minutes. - ✔✔With the exception of special conditions, maximum delivery time
between the water being mixed with the Portland cement in batching and the time of
completion of discharge from a transit-mix truck is
✔✔Prevent cracks from opening. - ✔✔What is the sole purpose for welded wire fabric in
a floor slab?
✔✔True. - ✔✔The reason for tying reinforcing bars with tie wire is to keep the rebar in
place while pouring. It does not add any additional stength to the concrete. T or F
✔✔Stay-in-place forms. - ✔✔Concrete slabs poured above grade are often supported
by ribbed or corrugated steel decking. These forms are called
✔✔False. - ✔✔Rebar is placed in concrete mainly to improve its compression strength.
T or F
