d $1.$ The short$-$ term compression test for concrete$/$s accordance$/$ with$/$what ASTM standard?

a$),$ C$36$

b$).$ C$31$

c$).$ C$40$

d$).$ C$39$

b$.2.$ Which of the following statements is true?

a$).$ Capacity design is a design process that considers the redistribution of moments as successive

cross sections yield, thereby forming plastic hinges that lead to a plastic mechanism.

b$).$ In an over$-$reinforced design, the steel fails first but fature is graduat with the steel yielding.

c$).$ Strength design does guaranty serviceability under service joads.

d$).$ Working stress design attempts to ensure adequate safety under extreme loads.

C $3.$ What happens to the behavior of beam if the width is increased while other beam

variables remain constant?

a$).$ The ductility of the beam is decreased significantly.

b$).$ The strength of the beam is increased significantly.

c$)$ The ductility of the beam is increased significantly.

d$).$ The strength of the beam is decreased.

a $-4.$ For a single layer of steel reinforcement, calculate the stress in the steef if the section has a

steel strain of $0\mathrm{.}002.$

a$).400$ MPa

b$).420$ MPa

c$).270$ MPa

d$).$ Insufficient data

b $5.$ If the depth of compression block in the concrete at failure is $130$ mm $,$ calculate the

maximum possible value of the depth of the neutral axis in mm $.$

a$).173\mathrm{.}333$

b$).200$

c$)-152\mathrm{.}941$

d$).233\mathrm{.}667$