Hall Ticket No Question Paper Code: BST002
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech I Semester End Examinations (Regular) February, 2017
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. Define Diagonal tension. How can we prevent diagonal tension in reinforced concrete beams?
What are the conditions in which we design a doubly reinforced beam?
A rectangular simply supported beam 300 mm x 500 mm, spanning over 5 m is subjected to a
maximum moment of 150 kN-m at the mid-span. The beam is reinforced with four bars of 25
mm diameter, on the tension side at an effective depth of 450 mm. The bars are spaced at 50
mm center to center. Check the beam for serviceability limit state of cracking if M20 concrete
and Fe 415 steel are used
2. Explain the terms short term and long term deflection in a beam. Explain the method of calculating
long term deflection?
Design a rectangular beam 230 mm x 600 mm over an effective span of 5m. The superimposed
load on the beam is 50 kN/m. Effective cover to reinforcement is taken as 50 mm. Use M20
concrete and Fe 415 steel.
UNIT II
3. Explain yield line formulation in Two-way slabs? List the guidelines for Yield Line Patterns.

Draw the bending moment diagram for a beam, fixed at ends and carrying total uniformly distributed
load wu, after 20% redistribution. Determine the magnitude by the point of contraflexure
is shifted.
4. Explain the bases underlying the various limitations imposed by the Code with regard to moment
redistribution.
Apply yield line theory to estimate the collapse load of an isotropically reinforced circular slab
of radius simply supported on the periphery, and subject to
i. a uniformly distributed load of intensity wu per unit area and
ii. a concentrated load Pu at the centre.
Page 1 of 2
UNIT III
5. Explain the geometry, behavior and design considerations for a waffle slab?
How is the positive and negative bending moments distributed in the column and middle strips
in the interior span in the Direct Design method of Flat Slabs? How is the effect of pattern load
considered in Direct Design method as per IS 456 code?
6. List a few factors that affect the punching shear strength of flat slabs. How is a flat slab designed
for punching shear? State the equations for nominal shear stress and design shear stress.
Design the interior panel of a large single-storey warehouse flat slab roof with a panel size of 6 m
x 6 m supported by columns of size 500 mm x 500 mm. The height of the columns is 5m. Take
live load as 3.0 kN/m2 and the weight of finishes including waterproof treatment as 2.5 kN/m2.
Use M25 concrete and Fe 415 steel. Assume mild environment.
UNIT IV
7. Describe the detailing to be adopted in simply supported deep beams according to IS 456: 2000.
How are bearing stresses checked in deep beams?
Design a corbel to support a factored vertical load of 300 kN, applied at a distance of 350mm
from the column face. The column is 300 mm x 500 mm in plan. Assume M30 concrete, Fe 415
steel, and moderate environment.
8. Why is anchoring of main bar important in corbels? What are the methods suggested in IS 456
for anchoring the main bars of corbels?
Design a simply supported, 300 mm thick RC vertical deep beam of height 4.0 which is
supported over 500 mm wide piers having a clear spacing of 5m. The beam carries a service
superimposed load of 200 kN/m. Assume M20 grade concrete and steel of grade Fe 415
UNIT V
9. What are the variables that affect the strength and behavior of slender columns? Differentiate
the behavior of a slender column from that of a short column.
Design a rectangular combined footing to support two columns of size 300 mm x 300 mm (with
six 16mm bars) and 400 mm x 400 mm (with six 20mm bars), carrying 800 kN and 1200 kN
(service dead loads), respectively. These columns are located 3.6 m apart and the column
carrying 800 kN is flush with the property line. Assume SBC of 200 kN/m2. Assume M25
concrete in columns and M20 concrete in the footing and Fe 415 steel in the columns as well as
footing.
10. Explain the behavior of combined two-column footing.
Design the reinforcement of a short column of size 300 mm x 500 mm and unsupported length
of 3m subjected to a factored axial load Pu of 1400 kN and factored moment Mux about major
axis of 130 kNm and Muy about minor axis of 60 kNm. Adopt M30 concrete and Fe 500 grade
steel and assume moderate environment.
Page 2 of 2