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Concrete-structures Questions Set 2:

Quiz Mode

Distribution Steel where present in a slab?

Over the main Steel

Under the main Steel

In both directions

None

Solution:

A simply supported beam is considered as a deep beam if the ratio of effective span to overall depth is less than

Solution:

Why Working stress Method for design is uneconomical?

No use of all strength

Use of all strength

Use of steel is beyond elastic limit

None

Solution:

What is the maximum projection of bearing stiffeners attached to a steel beam's web thickness, tw, according to IS 800?

16tw

14tw

20tw

None

Solution:

How much bond resistance is present in ultimate step

Greater than working load

Smaller than working load

Equal to working load

None of the above

Solution:

A pretensioned concrete member of section 200 mmx250 mm contains tendons of area 500 mm² at centre of gravity of the section. The prestress in the tendons is 1000 N/mm². Assuming modular ratio as 10, the stress (N/mm²) in concrete is

9.17

8.53

6.78

7.89

Solution:

The lateral ties in a reinforced concrete rectangular column under axial compression are used to

Avoid buckling of the longitudinal steel under compression

Provide adequate shear capacity

Provide adequate confinement to concrete

Reduce the axial deformation of the column

Solution:

A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed by pre tensioning to a force of 150 kN at an eccentricity of 20 mm. The cross-sectional area of the prestressing steel is 187.5 mm². Take modulus of elasticity of steel and concrete as 2.1 x10 MPa and 3.0 x10 MPa respectively. The percentage loss of stress in the prestressing steel due to elastic deformation of concrete is

6.125

8.75

4.81

2.19

Solution:

Read the following two statements
1. Maximum strain in concrete at the outermost compression fibre is taken to be 0.0035 in bending.
2. The maximum compressive strain in concrete in axial compression is taken as 0.002.
Keeping the provisions of IS 456-2000 on limit state design in mind, which of the following is true?

Statement 1 is true but 2 is false

Statement 1 is false but 2 is true

Both statements 1 and 2 are true

Both statement 1 and 2 are false

Concrete-structures Questions Set 2:

Distribution Steel where present in a slab?

Solution:

A simply supported beam is considered as a deep beam if the ratio of effective span to overall depth is less than

Solution:

Why Working stress Method for design is uneconomical?

Solution:

What is the maximum projection of bearing stiffeners attached to a steel beam's web thickness, tw, according to IS 800?

Solution:

How much bond resistance is present in ultimate step

Solution:

A pretensioned concrete member of section 200 mmx250 mm contains tendons of area 500 mm² at centre of gravity of the section. The prestress in the tendons is 1000 N/mm². Assuming modular ratio as 10, the stress (N/mm²) in concrete is

Solution:

The lateral ties in a reinforced concrete rectangular column under axial compression are used to

Solution:

Solution:

Solution:

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