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Code: 15A01802
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R15
B.Tech IV Year II Semester (R15) Advanced Supplementary Examinations July 2019
ADVANCED STRUCTURAL ENGINEERING
(Civil Engineering)
Time: 3 hours
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Max. Marks: 70
Answer all questions
All questions carry equal marks
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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/m². Use M20 steel and Fe415 steel. Draw the reinforcement details by showing cross section at column strip.
OR
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Design a chimney of height 60 m. Given external diameter – 4.0 m, shell thickness 300 mm, wind intensity 1.9 kN/m², thickness of fire brick lining – 100 mm, air Gap-100 mm, temperature difference 80°C, coefficient thermal expansion – 11 x 10°C, Es = 2.1 x 105 kN/mm², unit weight of brick lined 20 kN/m³. Use M25 concrete and Fe415 steel. Draw plan and sectional elevation.
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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
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/m². Assume a level backfill with a unit weight of 16 kN/m³ and an angle of shearing resistance of 30º. Assume a coefficient of friction, µ = 0.5, between soil and concrete. Draw plan and sectional elevation.
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