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E192009 Pages:2

Design a simply supported RCC slab for a roof of a hall 4 m x 10 m (inside
dimensions) with 230 mm walls all around. Assume a live load of 4 kN/m? and

finish 1 எம்‌ Use M 25 concrete and Fe 415 steel.

Differentiate between one way slab and two way slab.
A T-beam has the following data: width of flange= 750 mm, Breadth of beam=
250 mm, Effective depth= 500 mm, Thickness of flange= 90 mm. Determine the

limiting moment of resistance of the beam. Use M20 concrete and Fe415 steel.

PART C
Answer any two full questions, each carries20 marks.
Design a reinforced concrete slab 6.3 x 4.5 m simply supported on all the four
sides. It has to carry a characteristic live load of 10 kN/m? in addition to its dead
weight. Assume M25 concrete and Fe 415 steel; also assume mild exposure
conditions.

Explain the procedure for estimation of flexural crack width in reinforced

concrete members as per IS456.

Design and detail a dog-legged stair for a building in which the vertical distance
between the floors is 3.6 m. The stair hall measures 2.5 m x 5 m. The live load
may be taken as 2500 शा, Assume that stair is supported at outer edges. Use
M20 concrete and Fe415 steel.

Sketch typical reinforcement detail in tread-riser type stairs.

Design a circular short column to carry an axial load of 1000 KN using helical
reinforcement. Use M20 concrete and Fe 415 steel.
How does one (a) check for deflections of two way slabs, and (b) control crack

width in two way slabs?

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