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In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________?

June 4, 2021January 14, 2019 by admin

In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________?

A. mc/t = n/(d – n)(Correct)
B. (m + c)/t = n/(d + n)
C. (t + c)/n = (d + n)/n
D. mc/t = (d – n)/t

The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________?

June 4, 2021January 14, 2019 by admin

The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________?

A. 12 bar diameters
B. 18 bar diameters
C. 24 bar diameters(Correct)
D. 30 bar diameters

An under-reinforced section means_________________?

May 10, 2021January 14, 2019 by admin

An under-reinforced section means_________________?

A. Steel is provided at the underside only
B. Steel provided is insufficient
C. Steel provided on one face only
D. Steel will yield first (Correct)

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

August 12, 2021January 14, 2019 by admin

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

If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________?

June 4, 2021January 14, 2019 by admin

If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________?

A. WL/2
B. WL/4
C. WL/6(Correct)
D. WL/8

If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________?

June 4, 2021January 14, 2019 by admin

If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________?

A. 8 cm
B. 6 m
C. 8 m(Correct)
D. 10 m

With usual notations the depth of the neutral axis of a balanced section, is given by______________?

June 4, 2021January 14, 2019 by admin

With usual notations the depth of the neutral axis of a balanced section, is given by______________?

A. mc/t = (d – n)/n
B. t/mc = (d – n)/n
C. t/mc = (d + n)/n
D. mc/t = n/ (d – n)(Correct)

In a beam the local bond stress Sb, is equal to_______________?

June 4, 2021January 14, 2019 by admin

In a beam the local bond stress Sb, is equal to_______________?

A. Shear force/(Leaver arm × Total perimeter of reinforcement)(Correct)
B. Total perimeter of reinforcement/(Leaver arm × Shear force)
C. Leaver arm/(Shear force × Total perimeter of reinforcement)
D. Leaver arm/(Bending moment × Total perimeter of reinforcement)

A retaining wall and is the horizontal earth pressure, the factor of safety If is weight of against sliding, is_____________?

June 4, 2021January 14, 2019 by admin

A retaining wall and is the horizontal earth pressure, the factor of safety If is weight of against sliding, is_____________?

A. 1.0
B. 1.25
C. 1.5(Correct)
D. 2.0

The weight of reinforced concrete, is generally taken as______________?

August 12, 2021January 14, 2019 by admin

The weight of reinforced concrete, is generally taken as______________?

A. 2200 kg/m3
B. 2300 kg/m3
C. 2400 kg/m3
D. 2500 kg/m3