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DFCCIL’21 CE: Daily Practice Quiz. 02-September-2021

DFCCIL (Dedicated Freight Corridor Corporation of India Limited) Exam Date 2021 on September and October 2021 so boost your preparation by attempt this Civil Engineering Reinforced Concrete Cement (RCC) quiz for DFCCIL recruitment 2021.

Quiz: Civil Engineering
Exam: DFCCIL-JE
Topic: MISCELLANEOUS

Each question carries 1 mark
Negative marking: 1/4 mark
Time: 8 Minutes

Q1. Consider the following statements:
1. Influence line Diagram (ILD) for SF at the fixed end of a cantilever and SFD due to unit load at the free end are same.
2. ILD for BM at the fixed end of a cantilever and BMD due to unit load at the free end are same.
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2

Q2. Which of the following load combinations is not recommended by Is 456-2000 for limit state of serviceability:
(a) 1.0 (DL + LL)
(b) 1.5 (DL + LL)
(c) DL + 0.8 LL + 0.8 EQ
(d) 1.0 (DL + EQ)

Q3. Axial load carrying capacity of RC column of gross area of concrete Ac, area of steel As and permissible stresses δ_c in concrete and δ_s in steel, m – modular ratio is given as:
(a) δ_c A_c+(m–1)δcAs
(b) δ_s As+mδcAs
(c) δcAs+δ_c As
(d) δ_c (Ac-As)+δcAs

Q4. The footing projection beyond the column is generally designed for
(a) Bending at the cantilever
(b) Shear at the cantilever
(c) Punching of column through it
(d) All of the above

Q5. The minimum number of main steel bars provided in R.C.C column.
(a) Rectangular columns is 4
(b) Circular columns is 6
(c) Octagonal columns is 8
(d) All of the above

Q6. The width of the flange of a T-beam should be less than
(a) One-third of the effective span of the T-beam
(b) Distance between the centres of T-beam
(c) Breadth of the rib plus twelve times the thickness of the slab
(d) All of the above

SOLUTION
S1. Ans.(a)
Sol. ILD for support reaction at D can be obtained by giving unit displacement in the direction of reaction (Muller’s Principle) and deflected shape of beam will represent ILD for reaction at D.

S2. Ans.(b)
Sol. 1.5 (DL+LL) is recommended for the limit state of collapse and not recommended for the limit state of serviceability.

S3. Ans.(a)
Sol. Axial load carrying capacity for RC-column is given by-
▭(P=δ_C A_C+(m-1) δ_c A_S )
Where, δ_C = Permissible stress in concrete
A_C = Gross area of concrete
δ_S = Permissible stress in steel
A_S = Area of steel
m = modular ratio

S4. Ans.(d)
Sol. The footing projection beyond the column is always designed for three criteria-
Bending
Shear
Punching

S5. Ans.(d)
Sol.

RCC column Minimum no of bars
Rectangular 4
Circular 6
Octagonal 8

S6. Ans.(d)
Sol. The width of the flange of a T-beam should be less than →
(a) One-third of the effective span of the T-beam.
(b) Distance between the centres of T-beam.
(c) Breadth of the rib plus twelve times the thickness of the slab.

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