Font size
S
M
L
XL
WorksheetsD67 MASTER THE DAY
Total questions: 103
Worksheet time: 2hrs 43mins
Name
Class
Date
1.
According to IS 456:2000, a slab is called one-way slab when L/B is:
a)
Less than 1
b)
Equal to 2
c)
Greater than 2
d)
Less than 2
2.
In a one-way slab, the main reinforcement is placed:
a)
In the longer direction
b)
In the shorter direction
c)
Diagonally
d)
In both directions equally
3.
Minimum reinforcement in slabs using mild steel bars is:
a)
0.10%
b)
0.12%
c)
0.15%
d)
0.20%
4.
Two-way slabs are identified when L/B ratio is:
a)
Greater than 2
b)
Equal to 2
c)
Less than or equal to 2
d)
Less than 1
5.
Torsion reinforcement at a corner where both edges are continuous is:
a)
Full torsion reinforcement
b)
Half torsion reinforcement
c)
Not required
d)
Double torsion reinforcement
6.
In a two-way slab, the middle strip width is taken as:
a)
1/4 of span
b)
1/2 of span
c)
3/4 of span
d)
Full span
7.
Distribution steel spacing in slabs shall not exceed:
a)
3d or 450 mm
b)
4d or 450 mm
c)
5d or 450 mm
d)
6d or 500 mm
8.
In a one-way slab, alternate bars are cranked at a distance from face of support equal to:
a)
L/7 for partially fixed slabs
b)
L/5 for continuous slabs
c)
Both A and B
d)
L/4 for simply supported slabs
9.
Effective span of a slab is taken as:
a)
Clear span only
b)
Clear span + effective depth
c)
Larger of clear span + depth or c/c distance
d)
Smaller of clear span + depth or c/c distance
10.
Torsion mesh size for a two-way slab corner is:
a)
1/4 of short span
b)
1/5 of short span
c)
1/6 of short span
d)
1/8 of short span
11.
Area of torsion reinforcement mesh for a simply supported corner is:
a)
50% of midspan steel
b)
75% of midspan steel
c)
100% of midspan steel
d)
25% of midspan steel
12.
In two-way slabs, tension reinforcement at midspan extends into span for:
a)
0.15 l
b)
0.25 l
c)
0.3 l
d)
0.1 l
13.
Two-way waffle slabs are supported by:
a)
Flat plates
b)
Drop panels
c)
Waffles in two directions
d)
Steel joists
14.
Two-way flat slabs transfer loads directly to:
a)
Beams
b)
Girders
c)
Columns
d)
Shear walls
15.
Cladding materials for concrete frames include:
a)
Glass
b)
Aluminium panels
c)
Stone sheets
d)
All of the above
16.
Main advantage of two-way slabs over one-way slabs is:
a)
Lower bending moments
b)
Lower deflection
c)
Load sharing in two directions
d)
All of the above
17.
For a slab with short span = 4 m, calculate torsion mesh size
a)
600 mm
b)
700 mm
c)
800 mm
d)
900 mm
18.
Maximum diameter of reinforcing bars in slab should not exceed:
a)
1/6 of slab thickness
b)
1/8 of slab thickness
c)
1/10 of slab thickness
d)
1/12 of slab thickness
19.
Minimum reinforcement in slabs with deformed bars is:
a)
0.10%
b)
0.12%
c)
0.15%
d)
0.20%
20.
Two-way flat slabs often use drop panels for:
a)
Reducing bending moments
b)
Resisting punching shear
c)
Increasing deflection
d)
Improving aesthetics
21.
Torsion reinforcement should be provided at any corner where:
a)
One edge is continuous
b)
Both edges are simply supported
c)
Both edges are continuous
d)
Slab is cantilevered
22.
One-way joist floor system is also called:
a)
Grid slab
b)
Ribbed slab
c)
Waffle slab
d)
Hollow slab
23.
In two-way slabs, the load is transferred to:
a)
Two opposite edges
b)
All four supporting edges
c)
Three edges
d)
Columns only
24.
Corners of a simply supported two-way slab held down require torsion steel equal to:
a)
25% of midspan steel
b)
50% of midspan steel
c)
75% of midspan steel
d)
100% of midspan steel
25.
Verandah slabs are generally designed as:
a)
Two-way slabs
b)
One-way slabs
c)
Cantilever slabs
d)
Flat slabs
26.
Which type of slab is most suitable for areas where beams cannot be provided due to architectural constraints?
a)
One-way slab
b)
Two-way slab
c)
Flat slab
d)
Hollow block slab
27.
Which parameter is NOT essential for deflection check in slab design?
a)
Span/depth ratio
b)
Modulus of elasticity of steel
c)
Concrete grade
d)
Concrete color
28.
For slabs, the spacing of main bars should not exceed:
a)
3 × effective depth or 300 mm
b)
3 × overall depth or 250 mm
c)
2 × effective depth or 200 mm
d)
None of the above
29.
What is the minimum cover for slabs exposed to mild conditions as per IS 456?
a)
15 mm
b)
20 mm
c)
25 mm
d)
30 mm
30.
Which type of reinforcement resists diagonal tension in slabs?
a)
Main reinforcement
b)
Distribution reinforcement
c)
Shear reinforcement
d)
Torsional reinforcement
31.
Which factor increases cracking risk in slabs?
a)
Low water-cement ratio
b)
High cement content
c)
Rapid drying
d)
Both B and C
32.
What is the typical load factor for live loads in slab design as per IS 456?
a)
1.2
b)
1.4
c)
1.5
d)
2.0
33.
Hollow block slabs are advantageous because they:
a)
Increase weight
b)
Reduce self-weight
c)
Reduce cost only
d)
Reduce reinforcement
34.
The main function of drop panels in flat slabs is to:
a)
Reduce bending moment
b)
Increase shear capacity
c)
Control cracking
d)
All of the above
35.
In two-way slab, the corner reinforcement is provided in:
a)
Top only
b)
Bottom only
c)
Both top and bottom
d)
None
36.
Which IS code is specifically for detailing of reinforcement?
a)
IS 456
b)
IS 2502
c)
IS 800
d)
IS 13920
37.
What is the minimum reinforcement percentage for high strength deformed bars in slabs?
a)
0.12%
b)
0.15%
c)
0.20%
d)
0.25%
38.
Two-way slabs supported on beams on all sides are analyzed using:
a)
Rankine method
b)
Moment coefficient method
c)
Yield line theory
d)
Elastic analysis
39.
In one-way slabs, distribution bars are placed:
a)
Perpendicular to main bars
b)
Parallel to main bars
c)
Diagonal to main bars
d)
Randomly
40.
Which is NOT a function of reinforcement in slabs?
a)
Resist tensile stresses
b)
Control shrinkage cracks
c)
Increase concrete compressive strength
d)
Distribute loads
41.
What is the standard live load for office floor slabs as per IS 875?
a)
2 kN/m²
b)
3 kN/m²
c)
4 kN/m²
d)
5 kN/m²
42.
Which slab type is preferred for heavy concentrated loads?
a)
Flat slab
b)
Grid slab
c)
Ribbed slab
d)
Hollow core slab
43.
In two-way slab design, the aspect ratio is:
a)
Length/Depth
b)
Longer span/Shorter span
c)
Breadth/Length
d)
Width/Depth
44.
Which reinforcement arrangement is used to resist punching shear in flat slabs?
a)
Shear heads
b)
Drop panels
c)
Closely spaced stirrups
d)
All of the above
45.
In slab design, the effective depth is measured from:
a)
Top surface to bottom of slab
b)
Top surface to center of main reinforcement
c)
Bottom surface to top of slab
d)
Top surface to bottom reinforcement
46.
Which load combination is used for checking serviceability limit states?
a)
1.5 (DL + LL)
b)
1.2 (DL + LL + WL)
c)
DL + LL
d)
0.9 DL + 1.5 WL
47.
Which factor affects the development length of reinforcement bars?
a)
Grade of steel
b)
Grade of concrete
c)
Bar diameter
d)
All of the above
48.
Nominal cover in slabs is provided mainly to:
a)
Prevent rusting of steel
b)
Provide bond between steel and concrete
c)
Resist fire
d)
All of the above
49.
Which slab system uses void formers to reduce weight?
a)
Flat plate
b)
Waffle slab
c)
Hollow core slab
d)
Post-tensioned slab
50.
In one-way slabs, load is transferred primarily in:
a)
Both directions equally
b)
Shorter span direction
c)
Longer span direction
d)
Diagonally
51.
Which IS code is used for earthquake resistant detailing in slabs?
a)
IS 456
b)
IS 13920
c)
IS 800
d)
IS 3370
52.
Post-tensioned slabs are advantageous because they:
a)
Reduce deflection
b)
Increase span length
c)
Reduce cracking
d)
All of the above
53.
Which factor reduces the effective span of a slab?
a)
Width of supports
b)
Type of reinforcement
c)
Type of loading
d)
Concrete grade
54.
Slab deflection can be controlled by:
a)
Increasing depth
b)
Using high-strength steel
c)
Reducing span length
d)
All of the above
55.
Which structural element connects the slab to the supporting beam?
a)
Column
b)
Stirrups
c)
Bearing bars
d)
Anchorage
56.
Minimum reinforcement ratio for HYSD bars in slabs is:
a)
0.12%
b)
0.15%
c)
0.18%
d)
0.20%
57.
In two-way slabs with restrained edges, moments are reduced due to:
a)
Partial fixity
b)
Support settlement
c)
Higher span-to-depth ratio
d)
Temperature effects
58.
Which method is widely used for slab deflection checks in IS 456?
a)
Span/depth ratio method
b)
Deflection formula method
c)
Finite element method
d)
Elastic analysis
59.
Which slab type is best for irregular column layouts?
a)
Flat slab
b)
One-way slab
c)
Waffle slab
d)
Ribbed slab
60.
Which factor influences the basic span-to-depth ratio in IS 456?
a)
Type of member
b)
Type of steel
c)
Support conditions
d)
All of the above
61.
Which IS code covers plain and reinforced concrete for general building construction?
a)
IS 456
b)
IS 800
c)
IS 3370
d)
IS 875
62.
For cantilever slabs, deflection control is more critical because:
a)
Longer spans
b)
No intermediate support
c)
Higher bending moments
d)
All of the above
63.
Drop panels in flat slabs are used to:
a)
Increase punching shear resistance
b)
Increase flexural capacity
c)
Reduce deflection
d)
All of the above
64.
For exposure condition 'severe', the minimum cover in slabs is:
a)
20 mm
b)
25 mm
c)
30 mm
d)
35 mm
65.
What is the maximum spacing of bars in slabs as per IS 456?
a)
3d or 300 mm
b)
3d or 450 mm
c)
3d or 200 mm
d)
3d or 250 mm
66.
Which type of reinforcement is placed at the top face of a cantilever slab?
a)
Main reinforcement
b)
Distribution reinforcement
c)
Shrinkage reinforcement
d)
Shear reinforcement
67.
In a ribbed slab, ribs are usually spaced at:
a)
200–300 mm
b)
300–500 mm
c)
500–700 mm
d)
700–900 mm
68.
Main bars in two-way slabs are placed:
a)
In both directions
b)
In short span only
c)
In long span only
d)
In diagonal direction
69.
Which test is performed to determine the workability of slab concrete?
a)
Slump test
b)
Compaction factor test
c)
Vee-bee test
d)
Flow table test
70.
Slab thickness in residential buildings is usually:
a)
100–120 mm
b)
125–150 mm
c)
150–175 mm
d)
175–200 mm
71.
Minimum cover for slabs in moderate exposure as per IS 456 is:
a)
15 mm
b)
20 mm
c)
25 mm
d)
30 mm
72.
In one-way slabs, main reinforcement is placed along:
a)
Short span
b)
Long span
c)
Both spans
d)
Diagonal span
73.
Shear reinforcement is not required in slabs if:
a)
Depth is less than 150 mm
b)
Shear stress is less than τc
c)
Span is less than 3 m
d)
Concrete grade is above M25
74.
Slabs designed for concentrated loads must be checked for:
a)
One-way bending
b)
Two-way bending
c)
Punching shear
d)
Bond stress
75.
Assertion (A): Flat slabs eliminate the need for beams.
Reason (R): The slab is directly supported on columns with drop panels or column heads.
a)
A and R are true, and R is the correct explanation of A
b)
A and R are true, but R is not the correct explanation of A
c)
A is true, R is false
d)
A is false, R is true
76.
Which slab system is best suited for heavy loads and longer spans?
a)
Flat plate
b)
Flat slab
c)
Waffle slab
d)
One-way slab
77.
Main purpose of providing torsion reinforcement in slabs:
a)
Increase bending strength
b)
Control cracking at corners
c)
Reduce deflection
d)
Resist shear
78.
What is the recommended minimum grade of concrete for RCC slabs?
a)
M15
b)
M20
c)
M25
d)
M30
79.
What is the maximum bar diameter allowed in slabs as per IS 456?
a)
1/8 of slab thickness
b)
1/10 of slab thickness
c)
1/12 of slab thickness
d)
No restriction
80.
In which slab type is punching shear more critical?
a)
Flat slab
b)
One-way slab
c)
Two-way slab
d)
Waffle slab
81.
Distribution reinforcement in slabs is provided to:
a)
Carry main bending moments
b)
Distribute loads uniformly
c)
Control shrinkage and temperature stresses
d)
Improve aesthetics
82.
Slab panel with 3 m × 4 m is designed as:
a)
One-way slab
b)
Two-way slab
c)
Flat slab
d)
Grid slab
83.
Why are bar bends provided in slab reinforcement?
a)
For anchorage
b)
To save steel
c)
To improve aesthetics
d)
To allow slab movement
84.
Which slab reinforcement type is placed perpendicular to main bars?
a)
Main reinforcement
b)
Distribution reinforcement
c)
Torsion reinforcement
d)
Shear reinforcement
85.
Deflection control in slabs is done by limiting:
a)
Span/depth ratio
b)
Load intensity
c)
Support settlements
d)
Shrinkage cracks
86.
IS 456 recommends checking slab design for serviceability limit states of:
a)
Deflection only
b)
Cracking only
c)
Both deflection and cracking
d)
Fatigue
87.
If slab span ratio (Ly/Lx) > 2, the slab is designed as:
a)
One-way slab
b)
Two-way slab
c)
Flat slab
d)
Grid slab
88.
Main bars in slabs should have a minimum spacing of:
a)
50 mm
b)
75 mm
c)
100 mm
d)
150 mm
89.
Which type of slab does not require beams for support?
a)
Flat slab
b)
One-way slab
c)
Two-way slab
d)
Waffle slab
90.
The load carrying capacity of waffle slabs is generally:
a)
Lower than solid slabs
b)
Higher than solid slabs
c)
Same as solid slabs
d)
Negligible
91.
The slab type suitable for irregular column layouts is:
a)
Flat slab
b)
Two-way slab
c)
One-way slab
d)
Waffle slab
92.
Drop panels in flat slabs help in:
a)
Reducing punching shear
b)
Reducing overall slab weight
c)
Decorative finish
d)
Reducing steel quantity
93.
In cantilever slabs, tension reinforcement is placed:
a)
At top face
b)
At bottom face
c)
Both faces equally
d)
None of the above
94.
Which type of reinforcement is used to control shrinkage and temperature stresses in slabs?
a)
Main reinforcement
b)
Distribution reinforcement
c)
Shear reinforcement
d)
Torsional reinforcement
95.
Slab panels with aspect ratio greater than 2 are designed as:
a)
One-way slabs
b)
Two-way slabs
c)
Flat slabs
d)
Waffle slabs
96.
Minimum percentage of steel in slab for mild steel bars is:
a)
0.10%
b)
0.15%
c)
0.20%
d)
0.30%
97.
Which type of slab is most suitable for architectural flexibility?
a)
One-way slab
b)
Two-way slab
c)
Flat slab
d)
Ribbed slab
98.
Which slab design method is not suitable for irregular supports?
a)
Moment coefficient method
b)
Yield line theory
c)
Finite element method
d)
Rankine–Grashoff method
99.
Ribbed slabs are most effective in:
a)
Short spans
b)
Medium spans
c)
Long spans
d)
Very short spans
100.
In flat slabs, punching shear is checked at:
a)
Column face
b)
d/2 from column face
c)
d from column face
d)
2d from column face
101.
Slabs designed for heavy loads often require:
a)
Higher reinforcement ratio
b)
Increased thickness
c)
Both A and B
d)
None of the above
102.
What is the typical live load for residential floor slabs as per IS codes?
a)
1 kN/m²
b)
2 kN/m²
c)
3 kN/m²
d)
4 kN/m²
103.
For durability, minimum cement content in RCC slabs for mild exposure is:
a)
250 kg/m³
b)
300 kg/m³
c)
320 kg/m³
d)
350 kg/m³
Reset
