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Questions and Answers
What are the advantages of using prestressed concrete?
What are the advantages of using prestressed concrete?
- Enhanced susceptibility to corrosion
- Improved crack resistance and durability (correct)
- Increased construction cost
- Decreased structural strength
What is the difference between pre-tensioning and post-tensioning in prestressed concrete?
What is the difference between pre-tensioning and post-tensioning in prestressed concrete?
- The method of applying the tendon (correct)
- The type of concrete used
- The construction schedule
- The structural design codes
Why is high strength concrete and high tensile steel necessary in prestressed concrete?
Why is high strength concrete and high tensile steel necessary in prestressed concrete?
- To increase construction time
- To increase structural efficiency (correct)
- To decrease structural stability
- To minimize material costs
What are the forces considered in the calculation of deflection of prestressed concrete beams?
What are the forces considered in the calculation of deflection of prestressed concrete beams?
What is meant by unpropped construction in prestressed concrete?
What is meant by unpropped construction in prestressed concrete?
Distinguish between creep and shrinkage of concrete in the context of prestressed members?
Distinguish between creep and shrinkage of concrete in the context of prestressed members?
What is the main purpose of prestressed concrete?
What is the main purpose of prestressed concrete?
Which type of tendon is used in the prestressed concrete beam with an eccentricity of 100 mm below the centroidal axis?
Which type of tendon is used in the prestressed concrete beam with an eccentricity of 100 mm below the centroidal axis?
What is the span of the simply supported post-tensioned concrete beam?
What is the span of the simply supported post-tensioned concrete beam?
What is the permissible tensile stress in steel for the I-section design?
What is the permissible tensile stress in steel for the I-section design?
What does the parabolic cable do in the prestressed concrete beam?
What does the parabolic cable do in the prestressed concrete beam?
What is the ultimate flexural strength of the unbounded tee section?
What is the ultimate flexural strength of the unbounded tee section?
How is the pre-tensioned beam affected by the 12 wires initially stressed to 1200 N/mm2?
How is the pre-tensioned beam affected by the 12 wires initially stressed to 1200 N/mm2?
What does creep coefficient influence in the long-term deflection calculation?
What does creep coefficient influence in the long-term deflection calculation?
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