Deck 8: Concrete Form Construction

Question 1

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

Answer 1

True

Question 2

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

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

Answer 2

B

Question 3

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

Answer 3

D

Question 4

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

Question 5

Form boards need to be accurately cut to length.

Question 6

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 7

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

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

Question 8

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 9

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

Question 10

Ready-mix concrete is sold by the square yard.

Question 11

Concrete has high compressive strength.

Question 12

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 13

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

Question 14

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

Question 15

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 16

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

Question 17

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

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

Question 18

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

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

Question 19

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 20

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

Question 21

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

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

Question 22

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 23

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 24

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

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

Question 25

____ 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 26

Metric rebars are measured in ____.

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

Question 27

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

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

Question 28

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 29

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 30

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