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Identify type of step:
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The total of one riser and one tread should be:
Unit rise should be:
Stair forms should be filled starting at the top step.
Unit run should be a minimum of:
Name type of nosings and treads used on concrete steps:
Name type of nosings and treads used on concrete steps:
Name type of nosings and treads used on concrete steps:
Name type of nosings and treads used on concrete steps:
Low slump concrete prevents concrete from slumping onto lower steps.
Low slump concrete promotes a slower set.
Low slump concrete prevents segregation.
Delivering concrete from the supply and placing it inside the forms is called leveling.
Which of the following guidelines should be followed to prevent cold joints while pouring concrete?
Which of the following should be checked when inspecting forms prior to placing concrete?
Which of the following leveling methods should NOT be used when only a benchmark is given as grade?
Rodding is the process of:
Concrete is consolidated in order to provide
Arrange in order the steps for placing and trowel finishing a concrete floor. First step, second step and so on.
First step
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Second step
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Third step
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Fourth step
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Arrange in order the steps for placing and trowel finishing a concrete floor. First step, second step and so on.
First step
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Second step
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Third step
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Fourth step
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Fine-broom finish is a type of finish used for concrete slabs.
Asphalt is a type of finish used for concrete slabs.
Exposed aggregate is a type of finish used for concrete slabs.
Hand-float finish is a type of finish used for concrete slabs.
Rough-broom finish is a type of finish used for concrete slabs.
Sculptured finish is a type of finish used for concrete slabs.
Relative humidity may determine when to start finishing procedures.
Air temperature may determine when to start finishing procedures.
Admixtures may determine when to start finishing procedures.
Concrete temperature may determine when to start finishing procedures.
Time since pouring may determine when to start finishing procedures.
Wind may determine when to start finishing procedures.
A factor to look for before starting finishing procedures is when spalling is present.
A factor to look for before starting finishing procedures is when water sheen has disappeared.
A reason for floating concrete is so it imbeds fine below the surface.
A reason for floating concrete is so that it prepares surface for other finishing operations.
A reason for troweling concrete is so that it brings surface to a smooth, dense finish.
A reason for troweling concrete is to provide desired texture and appearance.
Premature troweling is when you start to finish concrete before the water sheen has disappeared.
Blistering is a defect that may be caused by premature or excessive troweling.
Crazing is a defect that may be caused by premature or excessive troweling.
Staining is a defect that may be caused by premature or excessive troweling.
Scaling is a defect that may be caused by premature or excessive troweling.
Reduced strength is a defect that may be caused by premature or excessive troweling.
Used where floors are subjected to high abrasion, usually in industrial plants.
Used in explosives manufacturing plants, aircraft hangars, hospital operating rooms, and other areas where static charges are dangerous.
Used nearly anywhere to enhance the appearance of concrete; also used to mark off special areas, such as aisles and hazardous areas in industrial plants.
Before placing concrete for a sidewalk or patio, wet down subgrade, if necessary.
Before placing concrete for a sidewalk or patio, determine placement of edger marks.
Arrange in order the steps to take when placing and finishing concrete for a sidewalk or patio.
First step
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Second step
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Third step
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Fourth step
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Fifth step
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A Float is a type of finish used on sidewalks and patios.
A Broom (fine or rough) is a type of finish used on sidewalks and patios.
A Fine Swirl (sweat trowel) is a type of finish used on sidewalks and patios.
Temporary is a type of joint used on sidewalks and patios.
Insulation is a type of joint used on sidewalks and patios.
Longitudinal is a type of joint used on sidewalks and patios.
Decorative is a type of joint used on sidewalks and patios.
Joints in sidewalks and patios are important in order to provide a channel for water runoff.
Joints in sidewalks and patios are important in order to separate adjoining parts at a designated location.
Intersections of walks and drives; where slabs abut rigid objects such as curbs, buildings, other slabs, street signs, or fire hydrants; at regular intervals on long sidewalks.
Spaced at intervals to width of sidewalk; on large walks or patios intervals should not exceed ten feet in either direction; on walks or patios larger than ten feet, longitudinal joints should be cut down the center.
To create decorative patterns to enhance the appearance of sidewalks and patios.
Iron filings is a nonskid material used on sidewalks and patios.
Aluminum grits is a nonskid material used on sidewalks and patios.
Silicon carbide grits is a nonskid material used on sidewalks and patios.
Which of the following is NOT a factor in a cement mason’s choice of a power screed for a flatwork project.
Which of the following power screed covers the largest area of concrete most efficiently?
A vibratory truss screed is pulled across the surface.
Vibratory truss screeds make passes up to
A roller screed pipe spins in which of the following directions:
Which of the following reflects infrared light?
Laser screeds are capable of screeding 50,000 to 70,000 square feet a day.
Laser screeds fulfill high F- requirements.
Concrete is ready for the floating process when placing one’s foot on the slab surface leaves an indentation of approximately
Another word for first troweling is:
Ride-on trowels weigh less than walk-behind trowels.
The extra weight of a ride-on trowel compresses the concrete making it
Walk-behinds can be powered by the following:
These blades both finish and float a surface.
Which of the following blades leave a flatter floor?
How often should air filters be cleaned?
Among the spare equipment a crew should have on hand are spark plugs, starting cords, or even a spare machine.
Which type of power trowel does not require a well-ventilated area to prevent the accumulation of carbon monoxide fumes?
The purpose of the outer ring is to prevent which occurrence?
FF indicates.
FF-numbers are analyzed every:
FL numbers are analyzed every:
VNA lift trucks would most likely run on which type of superflat floor?
FF 25 is roughly equal to a tolerance of _____ in 10 feet.
A bullfloat can achieve FF-numbers up to:
Laser screeds can achieve FF-numbers of:
A device for measuring random traffic elevation across a floor is called a:
A blended mix of aggregate is desirable because it maximizes bleedwater.
Which of the following should NOT be used in superflat floor mixes?
A tool used to rod off concrete in defined traffic floors:
A channelfloat is used before screeding.
After pans are used, combination or finish blades should first be used in a pattern matching that of the pans.
Combination blades are often used after the pans because of what?
All construction joints in superflat floors should be of what type?
Square dowels have been effective at reducing curling.
Vapor barriers should be used whenever possible on superflat subgrades.
Laser grading should be done whenever possible for superflat subgrades.
If there is a question concerning the compaction of a subgrade what should be done?
What should be used to check forms after they are erected?
During concrete placement forms should be constantly checked and re-adjusted.
Concrete placement should occur from high elevation to prevent separation.
The lack of sand in a pervious concrete mixture creates a material with an open-cell structure that allows water to pass through readily.
Select the INCORRECT answer.
The admixture portion of a pervious concrete mixture
Considered a “Best Management Practice” by the EPA, pervious concrete supports efficient land use by eliminating retentions, swales, and other stormwater management devices.
This should be installed with a minimum of 6 inches of granular soil or gravel (10 inches of crushed stone) and compacted with a vibratory compactor.
In each cross-section of mixture, pervious concrete should not deviate +/- 3/8” in 10 feet from the profile grade.
Which of the follow is TRUE that during placement, care should be taken to avoid workers stepping into the mix
Even if it is windy, humid, or extremely hot outside, the surface should not be misted, sprayed, or hydrated in any way, as this will compromise the controlled water quantity in the mixture.
Select the INCORRECT answer in the blank provided.
A structural benefit of pervious concrete.
This worker can place, compact, finish, edge and joint pervious concrete, but lacks the requisite field experience.
Identify type of step: