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Posted Date: 18 Jan 2012 Posted By:: ggggggggg Member Level: Silver Points: 5 (Rs. 1)
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2011 Jawaharlal Nehru Technological University, Hyderabad B.Tech Civil Engineering Iv b.tech ii semester– examinations, july - 2011 advanced structural design (civil engineering) Question paper
Code.No:07A80101 R07
IV B.TECH II SEMESTER– EXAMINATIONS, JULY - 2011
ADVANCED STRUCTURAL DESIGN
(CIVIL ENGINEERING)
Time: 3hours Max.Marks:80
Answer any FIVE questions
All questions carry equal marks
- - -
1. Deign a counter fort retaining wall to retain earth 5.0 m above ground level using the following data:
Spacing of counter forts: 2.7 m c/c
The density of earth is 18 kN/m2,
Angle of internal friction is 300.
The safe bearing capacity of soil is 180 kN/m2,
The coefficient of friction between soil and concrete is 0.35
Use M20 grade of concrete and Fe 415 steel. [16]
2. Design circular water tank 4.5 m high, resting on the ground to store 75, 000 liters of water. Use M 25 grade of concrete and Fe 415 steel. Draw the reinforcement details. [16]
3. Design a circular steel water tank and its staging for a capacity of 120,000 liters. The height of the tank above ground level is 8.5 m and is to be supported on eight columns and Fe 415 steel. [16]
4. Design a silo with 5.4 m diameter, 15 m height of cylindrical portion and 0.6 m central opening to store coal. Use the following data:
Unit weight of coal: 8.6 kN/m3,
Angle of internal friction: 250
Angle of repose: 250.
Pressure ratio: 0.75
Use M 25 grade of concrete and Fe 415 steel. [16]
5. Design the intermediate longitudinal girders of a reinforced concrete T-beam bridge using the following data:
Clear width of road way = 9.0 m
Effective span = 16 m
T-beams are placed at 3 m c/c.
Use M 25 grade of concrete and Fe 415 steel. [16]
6. Design a welded plate girder of 18 m effective span to support 60 kN/m uniformly distributed live load over the entire span. [16]
7. Design the bottom lateral bracing for a railway bridge consisting of two trusses, 4 panels of 5 m each and height 6 m. The exposed area for calculation of wind forces on top bracing is 0.6 m2/m run of the top chord. Assume the intensity of wind pressure is 1.5 kN/m2. [16]
8. Determine the design wind forces on a reinforced concrete framed building 50 m × 25 m in plan and 63 m height consists of 4.2 m high storeys. It consists of rigid frame action in the longitudinal direction and reinforced concrete infill wall in the transverse direction. [16]
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