Explore topic-wise MCQs in Prestressed Concrete Structures.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Prestressed Concrete Structures knowledge and support exam preparation. Choose a topic below to get started.

1.

The British code for structural concrete recommends design values of ultimate creep strain of pretensioning is ___________

A. 48×10-6
B. 53×10-6
C. 40×10-6
D. 38×10-6
Answer» B. 53×10-6
Discussion
2.

A post tensioned concrete beam of rectangular section 200mm wide and 300mm deep is stressed by a parabolic cable with eccentricity 50mm at centre of span, area is 3×104mm2, initial stress is 1200n/mm2 Find the stress in concrete at the level of steel?

A. 10n/mm2
B. 15n/mm2
C. 6n/mm2
D. 8n/mm2
Answer» E.
Discussion
3.

A concrete beam of rectangular section 100mm wide, area is 3×104, initial stress is 1200n/mm2 of 7mm diameter located at an eccentricity 50mm. Estimate the loss of stress due to creep of concrete using the ultimate creep strain method?

A. 88
B. 40
C. 50
D. 120
Answer» B. 40
Discussion
4.

The loss of stress in steel due to creep of concrete is ___________

A. ℇcc fc Es
B. ℇc fc Ec
C. ℇc fe αe
D. ℇcc fc ϕ
Answer» B. ℇc fc Ec
Discussion
5.

The creep coefficient equation is given as ___________

A. Creep strain/elastic strain
B. Creep stress/elastic stress
C. Elastic strain/creep strain
D. Elastic stress/creep stress
Answer» B. Creep stress/elastic stress
Discussion
6.

The creep coefficient is high for ___________

A. Pretensioned
B. Post tensioned
C. Chemical tensioned
D. Electrical tensioned
Answer» B. Post tensioned
Discussion
7.

The creep coefficient varies from a minimum value of ___________

A. 2
B. 1.5
C. 2.5
D. 1.0
Answer» C. 2.5
Discussion
8.

The value of creep coefficient ‘f’ depends upon ___________

A. Humidity
B. Frost
C. Uv rays
D. Ice
Answer» B. Frost
Discussion
9.

The loss of stress due to creep of concrete can be estimated by ___________

A. Ultimate creep strain
B. Ultimate load
C. Ultimate creep stress
D. Ultimate creep tension
Answer» B. Ultimate load
Discussion
10.

The_British_code_for_structural_concrete_recommends_design_values_of_ultimate_creep_strain_of_pretensioning_is:$

A. 48√ó10<sup>-6</sup>
B. 53√ó10<sup>-6</sup>
C. 40√ó10<sup>-6</sup>
D. 38√ó10<sup>-6</sup>
Answer» B. 53‚Äö√†√∂‚àö‚â•10<sup>-6</sup>
Discussion
11.

A concrete beam of rectangular section 100mm wide, area is 3√ó104, initial stress is 1200n/mm2 of 7mm diameter located at an eccentricity 50mm. Estimate the loss of stress due to creep of concrete using the ultimate creep strain method?#

A. 88
B. 40
C. 50
D. 120
Answer» B. 40
Discussion
12.

The loss of stress in steel due to creep of concrete is:

A. ‚Ñácc fc Es
B. ‚Ñác fc Ec
C. ℇc fe α<sub>e</sub>
D. ℇcc fc ϕ
Answer» B. ‚Äö√Ñ√∂‚àö√´‚àö¬∞c fc Ec
Discussion
13.

The creep coefficient equation is given as:

A. Creep strain/elastic strain
B. Creep stress/elastic stress
C. Elastic strain/creep strain
D. Elastic stress/creep stress
Answer» B. Creep stress/elastic stress
Discussion
14.

The creep coefficient is high for:

A. Pretensioned
B. Post tensioned
C. Chemical tensioned
D. Electrical tensioned
Answer» B. Post tensioned
Discussion
15.

The creep coefficient varies from a minimum value of:

A. 2.0
B. 1.5
C. 2.5
D. 1.0
Answer» C. 2.5
Discussion
16.

The value of creep coefficient ‘f’ depends upon:$

A. Humidity
B. Frost
C. Uv rays
D. Ice
Answer» B. Frost
Discussion
17.

The loss of stress due to creep of concrete can be estimated by:

A. Ultimate creep strain
B. Ultimate load
C. Ultimate creep stress
D. Ultimate creep tension
Answer» B. Ultimate load
Discussion
18.

Which of the following results in the reduction of stress in steel used for prestress?

A. Shrinkage
B. Friction
C. Creep
D. Anchorage slip
Answer» D. Anchorage slip
Discussion