Font size
WorksheetsRCC Structures MCQ Practice Questions
Total questions: 35
Worksheet time: 20mins
What is the main purpose of providing reinforcement in R.C.C.?
Reduce weight
Improve aesthetics
Resist tensile stresses
Increase thickness
What is the design strength of steel in LSM as per IS 456?
0.67 f_y
0.87 f_y
0.57 f_y
1.5 f_y
What is the grade of steel commonly used in R.C.C. construction?
Fe 250
Fe 415
Fe 500
All of the above
According to IS 456:2000, what is the characteristic strength of M25 concrete?
20 MPa
25 MPa
30 MPa
35 MPa
Which code is used for the design of R.C.C. structures in India?
IS 800
IS 456
IS 875
IS 1893
In Limit State Method, the limit state of collapse is related to:
Serviceability
Flexural failure
Cost optimization
Aesthetic appearance
What is the characteristic strength of a material?
Maximum stress it can bear
Mean strength
Strength below which not more than 5% of test results fall
Ultimate stress
Which of the following is a limit state considered in Limit State Method?
Limit state of serviceability
Limit state of aesthetics
Limit state of constructability
Limit state of economic design
What is the partial safety factor for concrete as per IS 456:2000?
1.0
1.15
1.5
1.25
The partial safety factor for live load is:
1.0
1.2
1.5
1.8
What is the main advantage of the Limit State Method over the Working Stress Method?
Simplicity in design
More economical design
Larger factors of safety
None of the above
What is the design strength of a material?
Characteristic strength × Partial safety factor
Ultimate strength ÷ Partial safety factor
Characteristic strength ÷ Partial safety factor
Mean strength × Partial safety factor
In a singly reinforced section, the limiting value of neutral axis depth (xu,max) depends on:
Type of cement
Grade of concrete
Grade of steel
Width of beam
Which of the following is not an assumption of Limit State Method in flexure?
Plane sections remain plane
Tensile strength of concrete is neglected
Stress-strain curve of steel is parabolic
Strain varies linearly with depth
The design load is obtained by multiplying:
Live load with dead load
Characteristic load by partial safety factor
Design strength with cross-sectional area
Moment with lever arm
The moment of resistance of a balanced section is governed by:
Steel
Concrete
Both
None
In singly reinforced beam, steel is provided in the:
Compression zone only
Tension zone only
Both zones
Web only
As per IS 456, what is the minimum overall depth of a simply supported beam to satisfy stiffness requirement (span/depth ratio)?
Span/12
Span/20
Span/15
Span/25
For control of deflection, the span/depth ratio for a cantilever beam should not exceed:
15
20
7
10
The minimum clear cover to reinforcement in a beam for moderate exposure condition is:
20 mm
25 mm
30 mm
40 mm
Minimum clear horizontal spacing between two bars should not be less than:
Larger Bar diameter
25 mm
Maximum aggregate size + 5 mm
Greater of (a) and (c)
What is the maximum strain in concrete in the limit state of collapse in flexure?
0.002
0.0035
0.0015
0.004
The maximum spacing of side face reinforcement for a deep beam is:
150 mm
200 mm
300 mm
400 mm
Development length is provided to ensure:
Flexural strength
Anchorage of bars
Shear resistance
Deflection control
Development length is required to ensure:
Proper spacing
Fire resistance
Bond between steel and concrete
Durability
What is the anchorage value of a standard hook as per IS456:2000?
4φ
8φ
12φ
16φ
Side face reinforcement is provided when depth exceeds:
750 mm
300 mm
650 mm
800 mm
What is the usual criterion for curtailing tension reinforcement?
In a T-beam, the effective flange width depends on:
Slab depth
Overall depth
Span and spacing of beams
None of these
The projection of slab on one side beyond the web in L-beam is known as:
Lip
Flange
Effective width
Cantilever
Effective depth (d) in beam refers to:
Overall depth
Depth to neutral axis
Depth from top to centre of tension reinforcement
None of these
In under-reinforced sections:
Concrete fails first
Both fail together
Steel yields first
None
Doubly reinforced sections are designed when:
Beam depth is large
Only tension reinforcement is required
Beam is subjected to large moments with restricted depth
Neutral axis lies above the section
Minimum grade of concrete for RCC is:
M10
M15
M20
M25
Which type of beam section is more ductile?
Over-reinforced
Balanced
Under-reinforced
Doubly reinforced
