Hall Ticket No Question Paper Code: BST002
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech I Semester End Examinations (Supplementary) July, 2018
Regulation: IARE-R16
ADVANCED REINFORCED CONCRETE DESIGN
(Structural Engineering)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. What do you understand by the term limit state of serviceability? Why is it difficult to make an
accurate prediction of the total deflection and the maximum crack-width in a reinforced concrete
flexural member?
Determine the reinforcement required for a beam of size 300 mm x 600 mm subjected to a factored
bending moment of 150 kNm, factored shear force of 100 kN and factored torsional moment of
50 kNm. Use M20 grade concrete and Fe 415 steel.
2. Explain the stress-strain relationship for concrete and steel (with sketches) used in the limit state
method of design.
A rectangular beam section 200 mm wide and 450 mm overall depth is reinforced with 3 bars
of 16 mm diameter at an effective depth of 420 mm. Two hanger bars of 12 mm diameter are
provided at the compression face. The effective span of the beam is 5 m. The beam supports
a service load of 10 kN/m. If fck 20 N/mm2 and fy= 415 N/mm2. Compute the short term
deflection, long term deflection and check the limit state of deflection.
UNIT II
3. What do you understand by the term Redistribution of moments Explain with an example.

Determine the permissible service load for a rectangular slab of size 4 m x 6 m and depth as 150
mm which is simply supported on all sides and is reinforced with 10 mm bars 150 mm c/c in
shorter direction and 10 mm bars 200 mm c/c in longer direction. Take effective cover as 25 mm
and use M20 grade concrete and Fe 415 steel.
4. Draw the bending moment diagram envelope after 30% redistribution, for a fixed ended beam of
span 5 m carrying 20 kN/m load at collapse.
Derive the expression for the ultimate load carrying capacity of an isotropically reinforced square
slab simply supported on all edges subjected to uniformly distributed load over entire area by
virtual work method and equilibrium method
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UNIT III
5. Explain the limitations of Direct Design method of analysing flat slabs. What are the assumptions
of equivalent frame method.
Determine the design moment in both directions for the interior panel for the slab column system
without drop and without coulmn head with the following data: Slab 20 m x 30 Panel size
4 m x 6 Live load 4 kN/m2, Finishes 1 kN/m2, Size of the columns 500 mm x 500
mm, Floor to floor height 4 m. Use M20 grade concrete and Fe 415 steel.
6. What do you understand by the term middle strip and column strip in a flat slab? What are the
functions of drop panel and column heads in a flat slab? Explain in detail with a sketch
Design an interior panel of a flat slab with the following data: Size of floor 20 m x 20 Size
of panels 5 m x 5 Live load 4 kN/m2, Size of columns 500 mm diameter. Use M20
grade concrete and Fe 415 HYSD bars. Drop width 2.5 m are to be provided.
UNIT IV
7. How do you classify a beam as a deep beam? In what way the design of a deep beam is different
from that of a simple beam?
Design a corbel to support a factored load of 400 kN at a distance of 200 mm from the face of a
column of cross-section 300 mm x 400 mm. Adopt M25 grade concrete and Fe 415 grade HYSD
bars. Sketch the details of reinforcements in the corbel.
8. List the significant parameters influencing the determination of dimensions of a corbel.
Design a deep beam 300 mm wide and 4 m deep, simply supported over a clear span of 6 m. The
beam carries a live load of 160 kN/m at the service state and is supported on walls of 600 mm
thick on each end. Use M20 grade concrete and Fe 415 steel having permissible tensile stress of
230 N/mm2.
UNIT V
9. Design a short column of size 500 mm x 600 mm subjected to an axial load, Pu 2000 kN and
biaxial bending moments as follows: Mux 150 kNm, Muy 120 kNm. Use M20 grade concrete
and Fe 415 steel.
Where do we use combined footing? Explain various types of combined footings.
10. Explain the difference between long column and short column. What are additional secondary
moments in slender columns?
Design a combined footing for two columns, C1 and C2, 400 mm x 400 mm and 500 mm x 500
mm in size carrying 500 kN and 800 kN of load respectively. The smaller column is 0.4 m away
from the property line. The columns are 4 m apart the bearing capacity of the soil is 140 kN/m2.
Use M20 grade concrete and Fe 415 steel.
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