Deck 8: Concrete Form Construction

Question 1

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

Answer 1

True

Question 2

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

Answer 2

False

Question 3

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

Answer 3

True

Question 4

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
B)frame
C)superstructure
D)footing

Question 5

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
B)rigid insulation
C)a seal
D)tarpaulin

Question 6

____ are materials added to a concrete mix to achieve certain desired qualities.

A)Aggregates
B)Admixtures
C)Particulates
D)Condensates

Question 7

A combined slab and foundation/footing is called a ____.

A)slab-on-grade
B)complex slab
C)joint slab
D)monolithic slab

Question 8

Concrete has high compressive strength.

Question 9

Form panels are built of special form plywood backed by metal ribs or 2 * 4 ____.

A)studs
B)beams
C)blocks
D)anchors

Question 10

The ____ line is the point below the surface to which the ground usually freezes in winter.

A)plumb
B)frost
C)water
D)boundary

Question 11

Ready-mix concrete is sold by the square yard.

Question 12

____ is a mixture of Portland cement, fine and coarse aggregates, water, and various admixtures.

A)Plaster
B)Grout
C)Asphalt
D)Concrete

Question 13

Slump tests are done to determine the proper mixture of ingredients before placing concrete.

Question 14

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

Question 15

Precast concrete foundations sections are set by a crane and then bolted together.

Question 16

Most concrete used in construction is ____ concrete delivered to the job in a large truck.

A)precast
B)prefabricated
C)ready-mixed
D)cast-and-pour

Question 17

Concrete wall forms have more stress in the middle than they do at the top and bottoms.

Question 18

The purpose of a(n) ____ is to provide a lock between the footing and the foundation wall.

A)groove
B)channel
C)keyway
D)interface

Question 19

Form boards need to be accurately cut to length.

Question 20

The footing width is usually ____ the wall thickness and the footing depth is often equal to the wall thickness.

A)twice
B)three times
C)four times
D)six times

Question 21

Protect concrete from freezing for a minimum of ____ after being placed by providing insulation or artificial heat, if necessary.

A)3 hours
B)4 hours
C)4 days
D)4 weeks

Question 22

____ are doubled 2 * 4 pieces with spaces between them used to stiffen wall forms.

A)Snap ties
B)Walers
C)Tie rods
D)Expansion joints

Question 23

____ tests are made by inspectors on the job to determine the consistency of concrete.

A)Aggregate
B)Cement ratio
C)Slump
D)Admixture

Question 24

Most concrete masonry units (CMUs) are called ____, which have the familiar shape of a CMU.

A)corner blocks
B)sash blocks
C)extenders
D)stretchers

Question 25

If concrete is moist-cured for 7 days, its strength is up to about ____ percent of full strength.

A)60
B)75
C)85
D)95

Question 26

______ strength is the quality of being resistant to breaking under a pulling force.

A)Tensile
B)Compressive
C)Reinforcing
D)Rebar

Question 27

Steel reinforcing bars, called rebars, are used in concrete to increase its ____.

A)compressive strength
B)tensile strength
C)heat resistance
D)moisture resistance

Question 28

A rigid foam forming system called insulated concrete forms (ICFs) uses ____-inch thick expanded polystyrene.

A)1
B)2
C)3
D)4

Question 29

To determine the number of cubic yards of concrete needed for a job, find the number of cubic feet and divide by ____.

A)3
B)9
C)12
D)27

Question 30

Metric rebars are measured in ____.

A)millimeters
B)centimeters
C)decimeters
D)meters