Question 1

A 12- in.- thick hollow- core floor slab will generally span up to approximately

Accepted Answer

A)  20 ft.
B)  30 ft.
C)  40 ft.
D)  25 ft.
E)  none of the above.F) B) and E)
G) A) and B)

Question 2

Architectural precast concrete refers to concrete members used in building interiors.

Accepted Answer

A) True 
 B)False

Question 3

Using sketches, explain the commonly used beamless concrete floor systems.

Accepted Answer

Beamless concrete floor systems, also kn...

Question 4

Explain the difference between total precast and a mixed precast construction.

Accepted Answer

Total precast construction refers to a b...

Question 5

The formwork used for a waffle slab has

Accepted Answer

A)  a dome profile.
B)  a U- shaped profile.
C)  a Z- shaped profile.
D)  any one of the above.
E)  none of the above.F) C) and D)
G) A) and B)

Question 6

In a posttensioned elevated concrete floor, prestressing tendons are combined with conventional steel reinforcement.

Accepted Answer

A) True 
 B)False

Question 7

Indicate which of the following concrete floors are beam- supported floors and which are beamless floors. One- way slab floor
Flat- plate floor Flat slab floor
Two- way slab floor One- way joist floor

Accepted Answer

The answer of Indicate which of the following concrete floors...

Question 8

Explain the difference between one- way slab and two- way slab actions.

Accepted Answer

One-way slab and two-way slab actions re...

Question 9

A standard- module one- way joist floor is constructed using pans that are

Accepted Answer

A)  20 in. wide.
B)  30 in. wide.
C)  40 in. wide.
D)  A or B.
E)  B or C.F) B) and E)
G) A) and E)

Question 10

Sketch the following precast concrete structural members:
a. Hollow- core units
b. Solid planks
c. Double- tee units
d. Inverted- tee beams

Accepted Answer

Certainly! Below are descriptions and ro...

Question 11

Double- tee floors are commonly used

Accepted Answer

A)  where spans lie between 40 ft and 50 ft.
B)  where spans are in excess of 50 ft.
C)  in residential occupancies.
D)  where spans lie between 30 ft and 40 ft.E) C) and D)
F) B) and C)

Question 12

Based on structural considerations only, the thickness of the slab in a standard- module one- way joist floor need not exceed

Accepted Answer

A)  4 in. to 5 in.
B)  3 in. to 3- 1/2 in.
C)  5 in. to 6 in.
D)  2 in. to 2- 1/2 in.E) B) and D)
F) A) and B)

Question 13

In mixed precast construction, precast concrete members are generally used for

Accepted Answer

A)  columns.
B)  load- bearing walls.
C)  floors.
D)  shear walls.
E)  all of the above.F) A) and D)
G) All of the above

Question 14

Name the factors that affect the fire resistance of reinforced or prestressed concrete members.

Accepted Answer

(i)Thickness of member-the greater the t...

Question 15

In a band beam reinforced- concrete floor, the beams are

Accepted Answer

A)  located at a spacing of 8 ft to 10 ft on center.
B)  wide and shallow.
C)  narrow and deep.
D)  unnecessary.E) A) and C)
F) A) and B)

Question 16

The purpose of concrete topping on hollow- core slabs is to

Accepted Answer

A)  increase the fire rating of the floor.
B)  structurally integrate the slabs.
C)  increase the sound insulation of the floor.
D)  level the top of slabs.
E)  all of the above.F) A) and B)
G) A) and C)

Question 17

What is the difference between a flat plate concrete floor and a flat slab concrete floor?

Accepted Answer

In a flat- plate floor, the slab rests d...

Question 18

In total precast construction, precast concrete members are generally used for

Accepted Answer

A)  columns.
B)  floors.
C)  shear walls.
D)  load- bearing walls.
E)  all of the above.F) All of the above
G) A) and B)

Question 19

The strength of concrete used in precast concrete members is generally

Accepted Answer

A)  1 ksi to 2 ksi.
B)  2 ksi to 3 ksi.
C)  3 ksi to 4 ksi.
D)  4 ksi to 5 ksi.
E)  5 ksi to 6 ksi.F) B) and E)
G) All of the above

Question 20

Using sketches and notes, illustrate the two most commonly used reinforced- concrete floor systems.

Accepted Answer

The two most commonly used reinforced-co...

Exam 23: Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

In a posttensioned elevated concrete floor, prestressing tendons are combined with conventional steel reinforcement.

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Using sketches and notes, illustrate the two most commonly used reinforced- concrete floor systems.

Correct AnswerAnswered by ExamLex AIThe two most commonly used reinforced-co...View AnswerShow Answer

Explain the difference between one- way slab and two- way slab actions.

Correct AnswerAnswered by ExamLex AIOne-way slab and two-way slab actions re...View AnswerShow Answer

Explain the difference between total precast and a mixed precast construction.

Correct AnswerAnswered by ExamLex AITotal precast construction refers to a b...View AnswerShow Answer

Double- tee floors are commonly used

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In mixed precast construction, precast concrete members are generally used for

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Sketch the following precast concrete structural members: a. Hollow- core units b. Solid planks c. Double- tee units d. Inverted- tee beams

Correct AnswerAnswered by ExamLex AICertainly! Below are descriptions and ro...View AnswerShow Answer

In a band beam reinforced- concrete floor, the beams are

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What is the difference between a flat plate concrete floor and a flat slab concrete floor?

Correct AnswerverifiedIn a flat- plate floor, the slab rests d...View AnswerShow Answer

Using sketches, explain the commonly used beamless concrete floor systems.

Correct AnswerAnswered by ExamLex AIBeamless concrete floor systems, also kn...View AnswerShow Answer

A 12- in.- thick hollow- core floor slab will generally span up to approximately

Correct AnswerverifiedShow Answer

The purpose of concrete topping on hollow- core slabs is to

Correct AnswerverifiedShow Answer

The strength of concrete used in precast concrete members is generally

Correct AnswerverifiedShow Answer

Name the factors that affect the fire resistance of reinforced or prestressed concrete members.

Correct Answerverified(i)Thickness of member-the greater the t...View AnswerShow Answer

In total precast construction, precast concrete members are generally used for

Correct AnswerverifiedShow Answer

Indicate which of the following concrete floors are beam- supported floors and which are beamless floors. One- way slab floor Flat- plate floor Flat slab floor Two- way slab floor One- way joist floor

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Architectural precast concrete refers to concrete members used in building interiors.

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A standard- module one- way joist floor is constructed using pans that are

Correct AnswerverifiedShow Answer

Based on structural considerations only, the thickness of the slab in a standard- module one- way joist floor need not exceed

Correct AnswerverifiedShow Answer

The formwork used for a waffle slab has

Correct AnswerverifiedShow Answer

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The two most commonly used reinforced-co...
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One-way slab and two-way slab actions re...
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Total precast construction refers to a b...
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verified

Correct Answer
Answered by ExamLex AI
Certainly! Below are descriptions and ro...
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In a flat- plate floor, the slab rests d...
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Beamless concrete floor systems, also kn...
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(i)Thickness of member-the greater the t...
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