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Code: 15A01802

B.Tech IV Year II Semester (R15) Advanced Supplementary Examinations July 2019
(Civil Engineering)

Time: 3 hours Max. Marks: 70

All questions carry equal marks
*****
1 Design an interior panel of a flat slab with panel size 5 x 5 m supported by columns 4.5 m x 4.5 m.
Provide suitable drop. Take live load as 4 kN/m
2
. Use M20 steel and Fe415 steel. Draw the
reinforcement details by showing cross section at column strip.
OR
2 Design a chimney of height 60 m. Given external diameter ? 4.0 m, shell thickness 300 mm, wind
intensity 1.9 kN/m
2
, thickness of fire brick lining ? 100 mm, air Gap-100 mm, temperature difference -
80
0
C, coefficient thermal expansion ? 11 x 10
-6
/
0
C, Es = 2.1 x 10
5
kN/mm
2
, unit weight of brick lined
? 20 kN/m
3
. Use M25 concrete and Fe415 steel. Draw plan and sectional elevation.

3 Design a rectangular tank resting on ground with internal dimensions 7.0 x 5.5 x 2.75 m high. Take
the free board as 300 mm. Use M25 grade concrete and HYSD steel of grade Fe415. Draw plan and
sectional elevation.
OR
4 Design and detail the various elements of counter fort retaining wall to support difference in ground
elevation of 9 m. The foundation depth may be taken as 1.5 m below ground level, with a safe
bearing capacity of 160 kN/m
2
. Assume a level backfill with a unit weight of 16 kN/m
3
and an angle of
shearing resistance of 30
0
. Assume a coefficient of friction, ? = 0.5, between soil and concrete. Draw
plan and sectional elevation.

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R15
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