Rr420108 Advanced Structural Engineering

Set No. 1

Code No: RR420108

IV B.Tech II Semester Supplimentary Examinations, May 2008 ADVANCED STRUCTURAL ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Explain general features of a grid or coffered floors. (b) With neat sketches describe various types of grid floors popularly in use. 2. A composite bridge deck with reinforced concrete slab and steel plate girder to cover a span of 18m. Clear width of road way is 7.5m. Footpath is having 1m on either side. Spacing of the main girder is 2m. Design reinforced concrete deck slab. Use M20 concrete and Fe 415 steel. 3. What is shear connector? Discuss how it performs and discuss the design criteria. 4. (a) Explain general features of a Chimney. (b) With neat sketches describe various parts of an RC Chimney. (c) What are the advantages and limitations of Chimney? 5. (a) Describe procedure for designing Hopper bottom of a rectangular bunker. (b) Draw typical reinforcement diagram in hopper bottom of the bunker. 6. A cement silo has an internal diameter of 10 m with the height of cylindrical portion being 30 m. The density of cement is 15.2 kN/m3 . Coefficient of friction between concrete and material = 0.70. The angle of repose of the material is 17.5 degrees. Adopting M-15 concrete and ribbed tor steel, design the thickness and reinforcements required at the bottom of the cylindrical portion of the silo using Janssen’s theory. 7. Explain different types of folded plates used in various types of structures with neat diagrams. 8. Explain salient steps of Membrane theory of analysis of shells. ⋆⋆⋆⋆⋆

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Set No. 2

Code No: RR420108

IV B.Tech II Semester Supplimentary Examinations, May 2008 ADVANCED STRUCTURAL ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Define a grid or coffer floor. (b) Explain approximate method of analyzing a grid floor. 2. Explain general aspects of a composite bridge. 3. What is shear connector? Discuss how it performs and discuss the design criteria. 4. (a) Describe Stresses in RC shafts due to self weight and wind loads. (b) Derive expression for Moment in a Chimney due to self weight and wind force. 5. (a) Explain general features of an RC Bunker. (b) With neat sketches describe various parts of an RC Bunker. 6. (a) Explain the utility of a silo. (b) Explain limitation of Rankines theory for designing a Silo. 7. Explain salient steps of iterative method of analysis of folded plates. 8. Explain salient structural components of the shell with their limitations. ⋆⋆⋆⋆⋆

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Set No. 3

Code No: RR420108

IV B.Tech II Semester Supplimentary Examinations, May 2008 ADVANCED STRUCTURAL ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Define a grid or coffered floor. (b) With neat sketches describe various types of grid floors popularly in use. 2. A composite bridge deck with reinforced concrete slab and steel plate girder to cover a span of 25m for a National highway crossing. Clear width of road way is 7.5m. Footpath is having 1.5m on either side. Spacing of the main girder is 2m. Spacing of the cross girder is 5m. Thickness of wearing coat is 100mm. The overall depth of the deck slab is 300mm. Design composite bridge deck and shear connectors. Use M25 concrete and Fe 415 steel. 3. A composite bridge deck with reinforced concrete slab and steel plate girder to cover a span of 20m for a National highway crossing. Clear width of road way is 7.5m. Footpath is having 1.5m on either side. Spacing of the main girder is 2m. Spacing of the cross girder is 5m. Thickness of wearing coat is 100mm. The overall depth of the deck slab is 300mm. Design shear connectors. Use M25 concrete and Fe 415 steel. 4. (a) Explain general features of a Chimney. (b) With neat sketches describe various parts of an RC Chimney. (c) What are the advantages and limitations of Chimney? 5. (a) Explain general features of an RC Bunker. (b) With neat sketches describe various parts of an RC Bunker. 6. (a) Explain the utility of a silo. (b) Explain limitation of Rankines theory for designing a Silo. 7. (a) Define folded plate. (b) List out and describe assumptions in the analysis of folded plates. 8. Explain the following of a shell structures with neat sketches. (a) Shell of revolution (b) Shells of Translation (c) Cylindrical shells. ⋆⋆⋆⋆⋆ 1 of 1

Set No. 4

Code No: RR420108

IV B.Tech II Semester Supplimentary Examinations, May 2008 ADVANCED STRUCTURAL ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Define a grid or coffered floor. (b) With neat sketches describe various types of grid floors popularly in use. 2. Explain general aspects of a composite bridge. 3. A composite bridge deck with reinforced concrete slab and steel plate girder to cover a span of 25m for a National highway crossing. Clear width of road way is 7.5m. Footpath is having 1.5m on either side. Spacing of the main girder is 2m. Spacing of the cross girder is 5m. Thickness of wearing coat is 100mm. The overall depth of the deck slab is 300mm. Design shear connectors. Use M25 concrete and Fe 415 steel. 4. A reinforced concrete chimney having a wall thickness of 15 cm has a mean diameter of 2.5 m. The section is reinforced with sixty bars of 16 mm diameter. If the effective wind pressure is 1.4 kN/m2 on the projected area, evaluate the maximum stresses in concrete and steel at a section 25 m from the top of the chimney. Assume modular ratio = 15. 5. (a) Explain general features of an RC Bunker. (b) With neat sketches describe various parts of an RC Bunker. 6. (a) Explain the utility of a silo. (b) Explain limitation of Rankines theory for designing a Silo. 7. (a) Define folded plate. (b) List out and describe assumptions in the analysis of folded plates. 8. Explain the following of a shell structures with neat sketches. (a) Shell of revolution (b) Shells of Translation (c) Cylindrical shells. ⋆⋆⋆⋆⋆

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