Steel rods are used in reinforced concrete to increase its __________ strength.

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

A

Tensile strength

B

Compressive strength

C

Young's modulus

D

Thermal co-efficient of expansion

three meauring rods are 64 cm, 80 cm and 96 cm in length, What is the least length of cloth that can be measured exact number of times using any one of these rods ?

A

9.60 m

B

8,0 m

C

9.60 cm

D

96m

Three measuring rods are 64 cm, 80 cm and 96 cm in length. what is the least length of cloth that can be measured exact number of times using any one of these rods?

A

9.60 m

B

8.0 m

C

9.60 cm

D

96 m

The steel bars in a reinforced cement concrete beam are embedded __________ of the beam.

A

In the center

B

Near the bottom

C

Near the top

D

At any position

The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

A

$$\frac{{{\text{Shear force}}}}{{{\text{Lever arm}} \times {\text{Width}}}}$$

B

$$\frac{{{\text{Lever arm}}}}{{{\text{Shear force}} \times {\text{Width}}}}$$

C

$$\frac{{{\text{Width}}}}{{{\text{Lever arm}} \times {\text{Shear force}}}}$$

D

$$\frac{{{\text{Shear force}} \times {\text{Width}}}}{{{\text{Lever arm}}}}$$

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

A

Compressive and tensile

B

Tensile and compressive

C

Both compressive

D

Both tensile

In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called

A

Under-reinforced section

B

Over reinforced section

C

Economic section

D

Critical section

The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called

A

Balanced section

B

Economic section

C

Critical section

D

All the above

The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

A

1400 kg/cm²

B

190 kg/cm²

C

260 kg/cm²

D

230 kg/cm²

Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

A

Flanged iron

B

Collar

C

Flexible

D

Expansion

Steel rods are used in reinforced concrete to increase its __________ strength.

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