Reg No.:

03000CE301092002

Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fifth Semester B.Tech Degree Regular and Supplementary Examination December 2020

Max. Marks: 100

1 a)
b)
2 2)
b)
3 a)
b)
0)
4 ஐ
0)
5 ஐ
b)
6 a)
b)

Course Code: CE301
Course Name: DESIGN OF CONCRETE STRUCTURES I

Use of IS 456-2000 is permitted
PARTA
Answer any two full questions, each carries 15 marks.

Compare plain and reinforced concrete.
A beam section of size 200 mm x 400 mm is reinforced with 2 Nos. 16 mm
diameter bars on tension side. The effective cover to reinforcement is 40 mm.
Find the moment of resistance of the section. M20 concrete and Fe 415 steel is
used.
Explain development length and anchorage.
Design the stirrups of a beam section of width 230 mm and effective depth 450
mm. The factored shear force is 100 kN and the percentage of tensile
reinforcement is 0.5. Use M20 concrete and Fe 415 steel.
Compare working stress method and limit state method.
Write one advantage and one disadvantage of an under reinforced section
What is meant by curtailment of reinforcement?

PART छ

Answer any two full questions, each carries 15 marks.

In which situations does torsion come in beams?
A rectangular beam section is of width 230 mm and effective depth 400 mm.
Find the steel required to resist a bending moment of 30 kNm. Use M20
concrete and Fe 415 steel.
Explain the bending action of one way and two way slabs
Design a one way slab with 4 m clear span supported on 300 mm thick walls on
all four sides. The edges are simply supported. The live load on the slab is 3
kN/m?. Use M 20 concrete and Fe 415 steel.
How is design for torsion done?

A rectangular beam is simply supported over an effective span of 6 m.

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Duration: 3 Hours

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