FLAT SLAB

1. The minimum thickness of flat slab shall not be more than

(A) 200 mm (B) 150 mm
(C) 125 mm (D) 75 mm
2. The column strip shall be designed to resist _________ of the total +ve
moment in the panel
(A) 30% (B) 35% (C) 60% (D) 65%
3. The column strip shall be designed to resist _________ of the total -ve moment in
the panel
(A) 30% (B) 35% (C) 60% (D) 65%
4. The main purpose of providing drops in flat slabs is to
(A) Increase the shear stress around Column supports
(B) Reduce the shear stress around column supports
(C) Increase moments around columnsupports
(D) Decrease the moments around column supports
5. Thickened part of a flat slab over its supporting column, is technically known as
(a) Capital (b) Drop (c) Column head (d) Slab
6. The effective width of a column strip of a flat slab, is
(a) one-fourth the width of the panel (b) radius of the column
(c) half the width of the panel (d) diameter of the column
7.The thickness of drop in flat slab should not be less than ______of the slab
thickness.
(a) 1/3(b) 1/2 (c) 1/4 (d) 1/5
8. ____________ means a design strip bounded on each of its opposite sides by
the column strip.
(A)middle strip (B) panel(C) drop (D) column head
9. ________________ is a part of slab bounded on each of its four sides by the
centre -line of a column.
(A)middle strip (B) panel (C) drop (D) column strip
10. The length of drop in flat slab in each direction not less than ________________
of the panel length .
(A)1/3 (B) 1/2(C) 1/4(D) 1/5
11. According to direct design method the ratio of longer span to shorter span within
the panel shall not be greater than ___________
(A) 1(B) 2(C) 1.5(D) 2.5
12. According to direct design method there shall be minimum of ___________
continuous spans in each direction.
(A) 2(B) 3(C) 4(D) 5
13. The spacing of bars in a flat slab shall not exceed ___________ times the slab
thickness.
(A) 1(B) 2(C) 1.5(D) 2.5
14.Opening in flat slab may be placed within the __________ of the span in each
direction.
(A) one- fourth (B) one- half(C) middle- half(D) one -three
15. Basic value of span to depth ratio for two - way simply supported slab to control
deflection, Fe 250 is
(a) 28 (b) 40 (c) 32 (d) 35
16. A flat slab is supported
(a) on beam s (b) on columns (c) on beams and columns
(d) on columns monolithically built with slab
17.The diameter of the column head support a flat slab, is generally kept not more
than
(a) 0.25 times the span length
(b) 0.25 times the diameter of the column
(c) 4.0 cm larger than the diameter of the column
(d) 5.0 cm larger than the diameter of the column
18. Punching Shear is also called ________________ .
(A) One- Way Shear (B) Two- way shear (C) shear stress (D) torsional shear
19. The provision of a column head in a flat slab increases the ________ of the slab.
(A) Punching shear (B) Bending resistance
(C) Torsional resistance (D) Moment resistance
20. According to IS 456-2000, the percentage distribution of total moment (Mo) in the
panel to the middle strip is
(A) 11% (B) 15% (C) 30% (D) 25%
21. The column strip in an interior panel in a flat slab is designed to resist
__________ of the total negative moment in the panel at the support.
 (A) 30% (B) 15%(C) 49% (D) 21%
Yield line

1. Identify the notation of yield line pattern is ____.

(a) Beam Support (b) Column Support (c) Point Load (d) Udl
2. In direct design method, the design live load should not exceed ____times the
design dead load.
(a) three (b) two (c) one (d) four
3. Yield line are _________ line.
(a) wave (b) straight (c) discontinuous (d) dashed
4. If the ultimate flexural moment about two perpendicular lines in the plane of the
slab is different, then the slab is _____.
(a) Under reinforced (b) Over reinforced
(c) Orthotropically reinforced (d) Isotropically reinforced
5. A isotropically reinforced circular slab simply supported and supporting UDL the
ultimate moment is ____.
(a) W r2 / 8 (b) W r2 / 6 (c) W r2 / 4 (d) W r2 / 2
6. In rectangular slab with edges restrained at the supports, negative yield lines will
develop at the failure stage near the______.
(a) centre of span (b) soffit of slab at centre of slab
(c) edges at supports (d) top of slab at centre of slab
7. Which of the following is true for designing a slab using yield line theory?
(a) The slab should be over-reinforced
(b) The slab should be under-reinforced
(c ) The slab should be one way slab
(d) The slab should be isotropically reinforced
8. If the ultimate flexural moment about 2 perpendicular lines in the plane of the slab
are different, then the slab is_____.
(a) Isotropically reinforced (b) Orthotropically reinforced
(c) Under – reinforced (d) Over – reinforced
9. The theorem behind the yield line analysis of slabs is____.
(a) Lower bound theorem (b) Maxwell Betti’s theorem
(c) Clapeyron’s theorem (d) Kinematic theorem
10. Yield line theory analysis is based on load _____.
(a) working (b) collapse (c) dead (d) live
11. The ultimate moment for yield line is obtained, when the yield line is to_____
the direction of reinforcement.
(a) at right angles (b) parallel
(c) crossed at the angle of 45 degree (d) passes through
12. Negative yield lines form when the slab is _____.
(a) Supported by Continuous supports (b) Simply supported
(c) Ends are free (d) Over reinforced
13. “_ _ _ _ _ ” is notation for _____ yield line.
(a) positive (b) negative (c) axis of rotation (d) simply supported
14. A isotropically reinforced square slab fixed supported and supporting UDL the
ultimate moment is ____.
(a) WL2 / 8 (b) WL2 / 24 (c) WL2 / 48 (d) WL2 / 72
15. A hexagonal slab is isotropically reinforced is simply supported and supporting
UDL the ultimate moment is ____.
(a) WL2 / 8 (b) WL2 / 24 (c) WL2 / 48 (d) WL2 / 72
16. According to virtual work method, applied load causing virtual displacement is
___internal work done, or energy dissipated in rotation along the yield lines.
(a) greater than (b) less than (c) equal to (d) both (b) and (c)
Unit-5 Foundation
1.The figure below represents __________ piles.

a) Load bearing
b) End bearing
c) Friction
d) Sheet

2. Which of the following cannot be classified as a Deep foundation System?

A) Piles

b) Cassions
C) Anchors

d) Mats

3. A foundation is said to be deep if its depth is ________ than its width.

a) Equal to and Less than
b) Greater than
c) Less than
d) Equal to and Greater than
4. ______ type of pile foundation is driven into ground until hard stratum is reached.
a) Load bearing
b) End bearing
c) Friction
d) Sheet
5. ______ type of pile foundation is used to protect erosion on river blank.
a) Load bearing
b) End bearing
c) Friction
d) Sheet
6. ______ type of pile foundation is used to increase bearing capacity of loose
granular soil.
a) Compaction
b) End bearing
c) Friction
d) Sheet
7. The pile provided with one or more bulles in its vertical shaft, is generally known
as______.
a) Under-ream pile
b) Friction pile
c) Bearing pile
d) Sheet pile
8. The type of foundation most suitable for bridges is____.
a) Spread footing
b) Pile foundation
c) Pier foundation
d) Well foundation
9. When a heavy structure is to be constructed in sandy soil, the foundation used
is_____.
a) Spread footing
b) Pile foundation
c) Pier foundation
d) Well foundation
10.Batter piles are _____.
A) used to function as retaining walls
b) used to protect concrete deck or other water front structures from the abrasion or
impact
c) driven at an inclination to resist large horizontal inclined forces
d) driven in granular soil with the aim of increasing the bearing capacity of the soil
11. Foundations can be broadly classified under __________
a)Shallow foundation
b) Pile foundation
c) Deep Foundation
d) both a and b
e) both a and c
12.A foundation is said to be shallow if its depth is ________ than its width.
a) Equal to and Less than
b) Greater than
c) Less than
d) Equal to and Greater than
13.Which of the following is a type of shallow footing?
a)Spread footing
b)Pile foundation
c)Pier foundation
d) Well foundation
14.When do strap footings are used in foundation?
a) To transfer load of an isolated column
b) Distance between the columns are long
c) Two column loads are unequal
d) All of the mentioned
15.When two column loads are unequal, which of the possible footing can be
provided?
a) Strap footing
b) Raft footing
c) Trapezoidal combined footing
d) Mat footing
16.Which of the below is not a preliminary consideration for building a foundation?
a) Bearing capacity of soil
b) Ground water condition
c) Settlement control
d) Soil organisms
17.If the independent spread footing of two columns are connected by a beam, it is
called ___________
a) Combined footing
b) Trapezoidal combined footing
c) Strap footing
d) Raft footing
18. How many types of combined footing are possible?
a) 2
b) 3
c) 4
d) 5
19. ___________ footing is used in large continuous footing supporting all columns
of the structures.
(a)Isolated (b)Strap (c)Raft (d) Pile

20.In shallow foundation, __________ footing is used when soil condition is poor.

(a)Isolated (b)Strap (c)Mat (d) Pile

21. The most commonly used deep foundation in buildings
(a) Well foundation (b) Pile foundation
(c) Raft foundation (d) Grillage foundation
22. The safe bearing capacity of a soil can be defined as
(a) Maximum pressure which the soil can carry safely without shear failure
(b) Maximum pressure which the soil can carry safely without bending failure
(c) ultimate load on the bearing area
(d) pressure at which the soil can settlement will not exceed the allowable settlement
23.In combined footing for two columns carrying unequal loads, the maximum
hogging bending moment will occur
(a) Under the lighter column (b) Under the heavier column
(c) In between two columns (d) At the edges
24. According to IS 456:2000, the thickness at the edge on top of piles for footing on
the piles should not be less than
(a)100 mm (b) 150 mm (c)200 mm (d) 300 mm
25. If columns are very closely spaced the footing to be adopted is
(a) Isolated (b) Combined (c) Trapezoidal (d) Wall
26 .The bearing capacity of a soil does not depend on
(a)Applied load (b) size of the footing
(c) Shear parameters of soil (d) bending capacity of soil
27. Factor of safety adopted in foundation design is
(a) 1.0 to 1.5 (b) 15 to 2.0 (c) 2.0 to 2.5 (d) 2.5 to 3.0
28. According to IS 456:2000, minimum cover for footing is
(a)40mm (b)50mm (c)75mm (d)60mm
29. Pile foundation are invariably used in
(a) Bridges foundation (b) machine foundation (c) tall building (d) towers