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Posted By: kondapalli Member Level: Gold Posted Date: 08 May 2008
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2007 Jawaharla Nehru Technological University B.Tech Civil STRUCTURAL ENGINEERING DESIGN AND DRAWING-I(RCC) setno 2 Question paper
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1. Design the Flexural Reinforcement for the Rectangular concrete Beam of size 250
mm ×400mm simply supported an two marmarry walls 230mm thick and 6m apart.
The Beam has to carry in addition to its own weight, a distributed live load of
10kN/m, dead load of 5 kN/m and a concentrated dead load of 30kN placed at
the mid span point. Assume that the Beam in subjected to moderate exposure
conditions and grade of steel Fe 415 used.
Draw suitable scale longitudinal section and cross section of the Beam
2. Design a plain concrete footing for a column 300mm × 30mm carrying an axial
load of 330 kN. Assume an allowable soil bearing pressure of 360 kN/m2 at a depth
of 1.0m below ground. AssumeM20 concrete and Fe 415 steel.
Draw to scale showing
(a) Plan of the footing
(b) Nominal Reinforcement in sectional elevation
PART-B (Marks:16x3=48)
3. Explain the terms:
(a) Safety
(b) Screwiceability
(c) Partial safety factor for materials.
4. Derive expressions for the position of neutral axis and moment of resistance for a
balanced rectangular section and compute the same for M20 concrete and HYSD
bars.
5. Design a beam 400 X 600mm subject to a bending moment of 150KN-m, twisting
moment of 20KN-m and a shear force of 100KN at collapse. Use M 20 mix and 415
grade steel.
6. Design an axially loaded tied column 400mm x 400mm pinned at both ends with
an unsupported length of 3m for carrying a factored load of 2300KN use M20 grade
concrete and Fe 415 steel.
7. The roof of a cycle stand consists of an R.C slab which cantilevers 3.5m on each
side of a central R.C beam supported on columns. Design the cantilever slab for a
live load of 2kN/m2. Use M 20 grade of concrete and Fe 415 grade steel.
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