Question

The major type of reinforcements used in prestressing is ________

(a) circular reinforcement

(b) spalling reinforcement

(c) rolling reinforcement

(d) spiral reinforcement

This question was addressed to me in my homework.

The above asked question is from Finishing Work in section Rules and Methods of Measurement of Civil Engineering Drawing

Answer 1

Correct choice is (b) spalling reinforcement

To explain: The spalling stresses leads to stress behind the loaded area of the anchor blocks. This results in the breaking off of the surface concrete. The most likely causes of such types of stresses are Poisson`s effects strain interoperability or by the stress trajectory shapes.