Quiz 1

1)Define characteristic cube strength of concrete.

2)What do you understand by the design strength of concrete ?

3)Discuss briefly the concept of Limit State Design.

4) Discuss what are partial load factors and partial material factors; How they are applied in design
Partial load factors -

5)In elastic analysis, what is meant by transformed area?

6)Explain the simplified stress block diagram according to BS8110.

7)In limit state design of RC beam, explain the term 'balanced design' .

8)Explain what you understand by under-reinforced and over-reinforced design of concrete beam. Which design is preferred ?

9)What is the ultimate strain of concrete in compression?  What are the ultimate strain in steel in tension and compression ?

10)What happen if the lever arm,z  of the stress block is greater than 0.95d, as prescribed by BS8110 ?