RCC Structures Design MCQ Practice Questions (Civil Eng) Set 8

The radius of a bar bend to form a hook, should not be less than:

Options are :

• None of these
• Thrice the diameter
• Four times the diameter
• Twice the diameter
• Five times the diameter

Distribution of shear intensity over a rectangular section of a beam, follows:

Options are :

• An elliptical curve
• A circular curve
• A straight line
• None of these
• A parabolic curve

Options are :

• h/3
• 2h/3
• h/2
• h/4

Options are :

• B
• A
• C
• E
• D

The length of the straight portion of a bar beyond the end of the hook, should be at least:

Options are :

• Twice the diameter
• Five times the diameter
• Seven times the diameter
• Four times the diameter
• Thrice the diameter

Options are :

• Flight
• Rise
• Winder

The thickness of the topping of a ribbed slab, varies between:

Options are :

• 5 cm to 8 cm
• 8 cm to 10 cm
• 3 cm to 5 cm
• 12 cm to 18 cm
• 12 cm to 15 cm

Answer :5 cm to 8 cm

Options are :

• 0.107 L
• 0.407 L
• 0.307 L
• 0.207 L

Options are :

• B
• A
• D
• C

An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm ? placed symmetrically along the circumferenceIf it carries a load of 40, 000 kg axially, the stress is:

Options are :

• 49.9 kg/cm^(2)
• 175 kg/cm^(2)
• 100 kg/cm^(2)
• 250 kg/cm^(2)

Options are :

• 12 mm
• 22 mm
• 24 mm
• 20 mm
• 6 mm

To ensure uniform pressure distribution, the thickness of the foundation, is:

Options are :

• Decreased gradually towards the edge
• Kept zero at the edge
• Increased gradually towards the edge
• Kept uniform throughout

The weight of a foundation is assumed as:

Options are :

• 12% of wall weight
• 5% of wall weight
• 10% of wall weight
• 7% of wall weight

The length of lap in tension reinforcement should not be less than the bar diameter x (actual tension / four times the permissible average bond stress) if it is more than:

Options are :

• 36 bar diameters
• 30 bar diameters
• 24 bar diameters
• 18 bar diameters

In a singly reinforced beam, the effective depth is measured from its compression edge to:

Options are :

• Neutral axis of the beam
• Tensile edge
• Longitudinal central axis
• Tensile reinforcement

Options are :

• 10
• 16
• 12
• 14
• 8

Options are :

• 4 cm
• 8 cm
• 6 cm
• 10 cm
• 12 cm

If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a:

Options are :

• Simply supported beam
• None of these
• Cantilever beam
• Continuous beam

A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis:

Options are :

• None of these
• Remains below the slab
• Coincides the geometrical centre of the beam
• Remains within the flange

If the depth of actual neutral axis of a doubly reinforced beam:

Options are :

• is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
• is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
• All the above
• is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly

The toe projection of foundation slabs is taken:

Options are :

• As one sixth of overall height of the wall
• As one third of the base
• Below ground surface
• Equal to heel slab

Answer :As one third of the base

Options are :

• A
• D
• B
• C

Options are :

• C
• A
• B
• D

The maximum shear stress (qmax) in a rectangular beam is:

Options are :

• 2.0 times the average
• 1.50 times the average
• 1.25 times the average
• 2.5 times the average
• 1.75 times the average

Options are :

• 8 mm
• 6 mm
• 4 mm
• 5 mm
• 10 mm

Options are :

• 20 cm
• 40 cm
• 50 cm
• 60 cm
• 30 cm

Options are :

• D
• C
• B
• A

Options are :

• 35
• 45
• 50
• 30
• 40

Pick up the true statement from the following:

Options are :

• In the absence of beams, it is easier to install piping
• All the above
• Plain ceiling provides the best property diffusing light
• A flat slab is capable to withstand concentrated loads
• In the absence of beams, it is easier to paint

Steel beam theory is used for:

Options are :

• Doubly reinforced beams ignoring compressive stress in concrete
• Steel beams encased in concrete
• Beams if shear exceeds 4 times allowable shear stress
• Design of simple steel beams

Answer :Doubly reinforced beams ignoring compressive stress in concrete

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