$1\mathrm{.}6$ Briefly explain what the $0\mathrm{.}2\%-$offset method is used for.

$1\mathrm{.}7$ The designation number of a reinforcing steel bar corresponds closely to $...$

the nominal diameter of the bar.

the nominal cross$-$sectional area of the bar.

the nominal weight per foot of the bar,

$1\mathrm{.}8$ Fatigue is a phenomenon that occurs $...$

after a small number of loading cycles.

at any time after yielding.

after a very large number of loading cycles.

$1\mathrm{.}9$ Name one characteristic$/$behavior in which reinforcing steel is weaker than

concrete.

$1\mathrm{.}10$ Concrete and steel reinforcement have close values of $...$

compressive strength.

thermal expansion coefficient.

tension strength.