An Under-Reinforced Section Means

Answer: D. Steel will yield first

An under-reinforced section means steel will yield first.

Solution

An under-reinforced section means sections where the yield strain of the steel occurs at loads lower than the load at which the failure strain of the concrete occurs.

• The occupants have enough time to escape before the section falls because severe bending and beam breaking occur before steel yields. Therefore, the yielding of steel in an under-reinforced section does not indicate that the structure has failed.
• The collapse in the under-reinforced section is caused by the concrete reaching its ultimate failure strain of 0.0035 before the steel achieves its failure strain, which is substantially greater at 0.20 to 0.25.

☛ Related Questions:

• For road pavements, the cement generally used is
• The advantage of reinforced concrete is due to
• The chances of segregation are more for