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Design of Concrete Structures

Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________?

Design of Concrete Structures, MCQs / Q&A /
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________?

A. 35 MPa and 42 MPa
B. 42 MPa and 35 MPa
C. 42 MPa and 53 MPa
D. 53 MPa and 42 MPa

Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________? Read More »

Design of Concrete Structures, MCQs / Q&A

Stress strain curve of high tensile steel_______________?

Design of Concrete Structures, MCQs / Q&A /
Stress strain curve of high tensile steel_______________?

A. has a definite yield point
B. does not show definite yield point but yield point is defined by 0.1% proof stress
C. does not show definite yield point but yield point is defined by 0.2% proof stress
D. does not show definite yield point but yield point is defined by 2% proof stress

Stress strain curve of high tensile steel_______________? Read More »

Design of Concrete Structures, MCQs / Q&A

Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?

Design of Concrete Structures, MCQs / Q&A /
Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?

A. elastic shortening of concrete
B. shrinkage of concrete
C. creep of concrete
D. loss due to friction

Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ? Read More »

Design of Concrete Structures, MCQs / Q&A

In prestressed concrete______________?

Design of Concrete Structures, MCQs / Q&A /
In prestressed concrete______________?

A. forces of tension and compression change but lever arm remains unchanged
B. forces of tension and compressions remain unchanged but lever arm changes with the moment
C. both forces of tension and compres-sion as well as lever arm change
D. both forces of tension and compres-sion as well as lever arm remain unchanged

In prestressed concrete______________? Read More »

Design of Concrete Structures, MCQs / Q&A

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to_____________?

Design of Concrete Structures, MCQs / Q&A /
Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to_____________?

A. deflect downward
B. deflect upward
C. deflect downward or upward
D. none of the above

Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to_____________? Read More »

Design of Concrete Structures, MCQs / Q&A