Name: 
 

Chapter 6



True/False
Indicate whether the statement is true or false.
 

 1. 

Any water used to make concrete should be clean and even drinkable.
 

 2. 

In tropical climates, footings must be placed as much as 6 feet below the surface.
 

 3. 

Rise is the vertical distance of a step, the height of each step.
 

 4. 

All weather-wood foundations are made of pressure-treated lumber and plywood.
 

 5. 

Ready-mix concrete is sold by the square yard.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 6. 

____ is a mixture of portland cement, fine and coarse aggregates, water, and various admixtures.
a.
Plaster
c.
Asphalt
b.
Grout
d.
Concrete
 

 7. 

____ are materials added to a concrete mix to achieve certain desired qualities.
a.
Aggregates
c.
Particulates
b.
Admixtures
d.
Condensates
 

 8. 

Most concrete used in construction is ____ concrete delivered to the job in a large truck.
a.
precast
c.
ready-mixed
b.
prefabricated
d.
cast-and-pour
 

 9. 

The ____ for a foundation provides a base on which to spread the load of a structure over a wider area of the soil.
a.
forms
c.
superstructure
b.
frame
d.
footing
 

 10. 

The footing width is usually ____ the wall thickness and the footing depth is often equal to the wall thickness.
a.
twice
c.
four times
b.
three times
d.
six times
 

 11. 

The ____ line is the point below the surface to which the ground usually freezes in winter.
a.
plumb
c.
water
b.
frost
d.
boundary
 

 12. 

The purpose of a(n) ____ is to provide a lock between the footing and the foundation wall.
a.
groove
c.
keyway
b.
channel
d.
interface
 

 13. 

A combined slab and foundation/footing is called a ____.
a.
slab-on-grade
c.
joint slab
b.
complex slab
d.
monolithic slab
 

 14. 

Where necessary, to prevent heat loss through the floor and foundation walls, ____made of extruded polystyrene is installed under the concrete slab.
a.
a vapor barrier
c.
a seal
b.
rigid insulation
d.
tarpaulin
 

 15. 

Form panels are built of special form plywood backed by metal ribs or 2 ´ 4 ____.
a.
studs
c.
blocks
b.
beams
d.
anchors
 

 16. 

____ are doubled 2 ´ 4 pieces with spaces between them used to stiffen wall forms.
a.
Snap ties
c.
Tie rods
b.
Walers
d.
Expansion joints
 

 17. 

____ is the horizontal distance of a step, roughly the width of each step.
a.
Hypotenuse
c.
Run
b.
Asymptote
d.
Axis
 

 18. 

Steel reinforcing bars, called rebars, are used in concrete to increase its ____.
a.
compressive strength
c.
heat resistance
b.
tensile strength
d.
moisture resistance
 

 19. 

Metric rebars are measured in ____.
a.
millimeters
c.
decimeters
b.
centimeters
d.
meters
 

 20. 

____ tests are made by inspectors on the job to determine the consistency of concrete.
a.
Aggregate
c.
Slump
b.
Cement ratio
d.
Admixture
 

 21. 

If concrete is moist-cured for 7 days, its strength is up to about ____ percent of full strength.
a.
60
c.
85
b.
75
d.
95
 

 22. 

Protect concrete from freezing for a minimum of ____ after being placed by providing insulation or artificial heat, if necessary.
a.
3 hours
c.
4 days
b.
4 hours
d.
4 weeks
 

 23. 

Most concrete masonry units (CMUs) are called ____, which have the familiar shape of a CMU.
a.
corner blocks
c.
extenders
b.
sash blocks
d.
stretchers
 

 24. 

A rigid foam forming system called insulated concrete forms (ICFs) uses ____-inch thick expanded polystyrene.
a.
1
c.
3
b.
2
d.
4
 

 25. 

To determine the number of cubic yards of concrete needed for a job, find the number of cubic feet and divide by ____.
a.
3
c.
12
b.
9
d.
27
 



 
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