Reg No.:

Max. Marks: 100

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03000CE304052004
Pages: 2

Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Sixth semester B.Tech examinations (S), September 2020

Course Code: CE304
Course Name: DESIGN OF CONCRETE STRUCTURES - II

Use of IS 456 ,IS 1343,15 3370 & Column interaction curves of SP16 are permitted.
Assume missing data ,if any,suitably.
PART A
Answer any two full questions, each carries 15 marks.
Design था. uniaxially eccentrically loaded rectangular column section for the
following data :Pu=2500KN , Mu =125kNm about major axis.Unsupported length =
3.2m ,Lex=3m Ley=2.75m,fck=20N/mm? fy=415N/mm’,Use M20 concrete,Fe415
steel. Sketch reinforcement details.
Explain the interaction diagram of columns
Design a braced column 400x600mm size with factored load of 1700KN & biaxial
moments Muxl=220kNm at top, Mux2=125kNm at bottom about major axis;
Muyl=120kNm at top,Muy2=70kNm at bottom about minor axis.
Unsupported length of column=9m, lex=8.5m, ley=6.5m, Column bends in
double curvature. Adopt M25 concrete,Fe415 steel. Show reinforcement details.
Design a rectangular footing for an axial loaded column carrying 120010 load ,Size
of the column is 300mmx500mm.Safe bearing Capacity of soil is 180 kN/m?.Use
M25 Concrete and Fe 415 Steel.Sketch reinforcement details of footing in section &
plan
PART ‏تا‎
‎Answer any two full questions, each carries 15 marks.
Design & detail stem and heel portion of a cantilever retaining wall for retaining an
earth fill of 3.5 m height above the ground. The safe bearing capacity of soil is
150kN/m? and unit weight of earth fill is 18kN/m7.the angle of friction if 30 deg and

coefficient of friction between soil and concrete is 0.50. Use M25 and Fe415 steel.

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Duration: 3 Hours

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