III/IV B.Tech (Supplementary DEGREE EXAMINATION

Size: px

Start display at page:

Download "III/IV B.Tech (Supplementary DEGREE EXAMINATION"

Betty McKinney
5 years ago
Views:

1 CE311 April 2017 III/IV B.Tech (Supplementary DEGREE EXAMINATION Fifth Semester Structural Analysis -I Answer Question No.1 compulsorily. (1X12 = 12 Marks) (4X12=48 Marks) 1. Answer all questions (1X12=12 Marks) a) State the Castigliano s first theorem. b) Write the application of Maxwell-Betti s law. c) Is Castigliano s theorem is used for finding deflection of beams carrying bending moments as well as axial loads give an example. d) State the uses of influence line diagram. e) A simply supported girder has a span of 12m. A 200KN wheel load moves from one end to the other end on span of the girder. Find the maximum bending moment which can occur at a section 4m from the left end. f) Find the absolute maximum bending moment of a simply supported beam having a uniformly distributed load over the entire length of beam. g) What do you mean by rotational effect in fixed beam? h) Write the Clapeyron s equation for a simply supported beam having U.D.L throughout its length. i) Write the advantage of propped end in a propped cantilever beam with respect to cantilever beam. j) Write the advantages of statically indeterminate beams. k) Find out the strain energy stored by cantilever beam having a point load at its free end. l) What is meant by lack of fit in a truss? 2. Find the vertical deflection of the joint D of frame shown in Fig-1. All members have the same cross-sectional area A. The diagonal members are at 45 0 with the horizontal. 3. Find the deflection at D of a given square beam of width 300mm as shown in Fig-2 having a point load of 50KN at D. Take E= x 10 5 N/mm 2 I 4. Calculate maximum shear force, bending and absolute bending moment for the given system of loads moving from left to right on a girder of span 10m as shown in Fig-3.

2 CE Draw the influence line diagrams for members L1U2, L1L2, U2L2, U2U3, U3L2 shown in Fig-4. II 6. Find the fixing moments at supports and draw the bending moment diagram for fixed beam shown in Fig-5 if B sinks by 15mm. Take E= 200KN/mm 2 and I = 2.75 x 10 7 mm 4 7. Analyse the continuous beam shown in Fig-6 and draw the bending moment diagram and shear force diagram using theorem of three moments. V 8. Find the reactions at supports and draw the bending moment diagram for the portal frame shown in Fig Find the forces in the members of redundant frame shown in Fig-8 under the action of force. The cross-sectional area of each bar is 1000mm 2 and E= 2 x 10 5 N/mm 2

3 14CE502/CE312 Fifth Semester Water Resources Engineering-I Answer Question No.1 compulsorily. (1X12 = 12 Marks) (4X12=48 Marks) 1. Answer all questions (1X12=12 Marks) a What is the standard non recording rain gauge for measuring the rain fall? b What is the difference between infiltration indices? c Write any two assumptions of Unit hydrograph theory. d Write the equation for finding the yield of open well. e Define balancing depth and mention the importance of it. f g h i j k l Write any two defects in Lacey s silt theory. What are the graphs to be required for reservoir planning? Write any two methods to control the silt at head works. Determine the thickness of the impervious floor required if the residual head is 2m and specific gravity of the floor material is What is the necessity of stream gauging? Write the importance of stage discharge curve. Write any two properties required for canal lining material. 2.a Explain with neat sketches the various methods to determine Infiltration? Which method is accurate? Also draw the Infiltration rate curve? 2.b Following table gives the ordinates of 2hr- unit hydrograph. Find the ordinates of flood hydrograph if depth of rain fall excess is 10cm, consider constant base flow of 10 m 3 /sec. Time (Hr) Ordinates of 2 Hr-UH (m 3 /s) a A 6hour storm produced rainfall intensities of 7, 18, 25, 12, 10, 3 mm/hr in successive one hour intervals over a basin of 800 sq.km. The resulting runoff is observed to be 2640 hectare - meters. Determine the ø index for the basin. 3.b What is S-curve hydrograph? How is it constructed? What are its uses? I 4.a In an artesian aquifer of 8m thickness, a 10 cm diameter well is pumped at a constant rate of 100 lit/min. The steady state draw down observed in two wells located at 10 m and 50 m distance from the centre of the well are 3m and 0.05 m respectively. Compute the Transmissivity and permeability of the aquifer. 4.b Design an irrigation channel for design discharge 50 m 3 /sec and silt factor as a Determine the yield from a 30 cm diameter well under a drawdown of 10 m in the well, if the radius of influence and coefficient of permeability are 150 m and 5 m/day respectively. The aquifer is unconfined with a thickness of 60m. 5.b Explain in detail the various comparisons between Kennedy s and Lacey s theory.

4 14CE502 /CE312 II 6.a Determine the life of the reservoir with an initial reservoir capacity of 30 Mm 3 (million cubic metre), if the annual flood inflow is 60 Mm 3 and the average annual sediment inflow is 3600,000 kn. Assume the specific weight of sediment equal to 12 kn/m 3.The following table gives the information about trap efficiency and capacityinflow ratio for a reservoir. Cap/Inflow Trap efficiency (ή %) b Explain with neat sketches the various component parts of diversion head work. 7.a The following table gives the details about the average discharges of a river for 10 years. Determine the storage capacity required to maintain a flow of 475 cumecs throughout the year. Year Average Discharge (m 3 /sec) b Explain the design procedure of weirs on permeable foundations by Bligh s creep theory. V 8.a Discuss the various methods of measuring the discharge in a stream. 8.b Design a concrete lined channel of trapezoidal section to carry a discharge of 250 cumecs at a slope of 1 in The side slopes of the channel are to be made as 1.5 H: 1 V and a limiting depth of 3m is to be maintained. Take N for the lining material as a Discuss the various methods to measure the velocity of flow in a stream. 9.b What is the necessity of canal lining? Mention the various advantages and isadvantages of canal lining.

5 14CE 503/CE313 Fifth Semester Design of Concrete Structures- I (5X12=60 Marks) IS and IS (part-4) Code books are permitted Note: Necessary design checks and sketches attracts weightage in all design problems UNITI 1. A rectangular beam 250mm x 450mm is simply supported over a span of 5m. It is provided with a 4#25mm dia bars as tension reinforcement. Calculate the maximum stresses developed in steel and concrete, if the beam carries an udl of 12kN/m including self weight. Adopt m=13 and effective cover= 50mm.Also find the maximum moment of resistance, use M20 and Fe415 HYSD bars.(use WSM) 2. The T-roof beams are spaced at 2.5m c/c and simply supported. The beams have an effective span of 5m and 300mm web width, with a depth of 600mm projecting below the slab. Determine the maximum udl that can be put safely on the T-beam without exceeding the allowable stresses 5 N/mm 2 and 140 N/mm 2 in concrete and steel respectively. Beams are reinforced with 4 bars of 25mm dia. at the bottom with an effective cover of 40mm. Take modular ratio 19 and slab thickness 100mm. (Use WSM) UNITII 3. A rectangular simply supported beam is subjected to a live load of 20KN/m over a span of 6m. The depth of the beam is restricted to 450mm. Design the section for flexure. Use M20 and Fe 415 steel. Use Limit State Method. 4. Determine the moment of resistance of a T beam with flange width 1200mm.web thickness 300mm, slab thickness 100mm, effective depth 450mm and area of tension steel 2946 mm 2. Assume M20 concrete and Fe415 steel reinforcement in limit state method. UNITIII 5. A cantilever RCC beam has an effective depth of 500mm and breadth of 350mm. It contains 4-25mm bars of Fe415 grade as tensile steel. Calculate shear reinforcement needed for a factored shear force of 350KN on span of 6meters.Consider M 20 concrete and Fe415 Steel 6. A rectangular cantilever beam of span 4m is 350mmx650mm in c/s. Bending moment at support due to UDL is 150KN-M out of which 50% moment is due to permanent loads. Calculate the total beam deflection. It carries 3-25mm.bars in tension at an effective cover of 50mm.Consider M 20 concrete and Fe415 Steel. UNITIV 7. Design a simply supported beam for the following data, Effective span 6m, Live load 20kN/m, the cross section of the beam is limited to 230mm x 450mm. Use Limit State Method. 8. Design a dog legged stair case for a public building using the following data, Stair case room size 3.6m x 6m (Clear). Floor height is 3.6m. Adopt M 25 concrete and Fe 415 steel. Assume any suitable data if needed. Use Limit State Method. UNITV 9. Design a square water tank having inner dimensions of 6mX6mX2.65m high with walls fixed at the bottom and free at top. The tank is directly supported on the earth. The floor slab is monolithic with the walls. The free board is 150mm. Use M20 concrete and Fe415 grade HYSD bars. Use working stress method. 10. Design a square underground water tank having inner dimensions of 5mX5mX3m depth. The net bearing capacity of earth is 100kN/m 2.The angle of repose of the soil is The density of soil is 18kN/m 3. Use M20 concrete and Fe415 grade HYSD bars. Use working stress method. Assume necessary data and prepare detailed drawings.

6 CE 314 First Semester Design of Steel Structures - I Use of IS: code and steel tables are permitted (5X12=60 Marks) 1. a) Mention the advantages and disadvantages of welded connections. 4M b) Design a connection to join two plates of size 250 x 12 mm of Fe410, to mobilize full tensile strength using shop fillet welds if (a) a lap joint is used (b) a double cover butt joint is used. 8M 2. a) Sketch the various patterns of riveted joints. 4M b) Calculate the strength of 20 mm diameter bolt of grade 4.6 for the following cases. The main plates to be joined are 12 mm thick. (i) Lap joint, (ii) Single cover butt joint, the cover plate being 10 mm thick, (iii) Double cover butt joint, each of the cover plate being 8 mm thick. 8M I 3. Determine the design tensile strength of the plate 200 mm X 12 mm with the holes for 16 mm diameter of 4 bolts. The width of the plate is 130 mm and the bolts are in two rows with a gauge distance of 60 mm and edge distance of 35 mm. The steel used is of Fe 410 grade quality. 4. Design a built up column of two channels placed toe to toe. The effective length of the column is 5 m. The column carries an axial load of 2000 KN. UNITIII 5. Design a simply supported plate rolled steel beam section to carry a uniformly distributed load of 50 KN/m inclusive of self weight. Effective span of the beam is 6m.The depth of the beam is not to exceed 450 mm. The compression flange of the beam is laterally supported 6. Design a two tier grillage foundation for a column carrying 2000 KN load. The size of base plate is 800 x 800 mm. Safe bearing capacity of the soil is 200 KN/m 2. V 7. Design a laterally unsupported beam for the following data: Effective span = 4m, Maximum bending moment = 550 KN-m, Maximum shear force = 200 KN, Both ends are restrained in rotation, Steel is of grade Fe Design a laterally unsupported beam of effective span 6m for the following datasteel is of grade Fe410, Maximum bending moment = 150 KN-m, Maximum shear force = 210 KN. Check for web buckling, webcrippling and deflection is not required. UNIT V 9. An ISLB N/m transmits an end reaction of 385 KN, under factored loads, to the web of ISMB N/m. Design a bolted framed connection. Steel is of grade Fe 410 and bolts are of grade Design a stiffened seat connection for an ISMB 350@514 N/m transmitting an end reaction of 320 KN due to factored loads to a column section ISHB N/m. The steel is of grade Fe 410 and bolts are of grade 4.6.

7 14CE 505 CE315 Fifth Semester Answer Question No.1 compulsorily. GEOTECHNICAL ENGINEERING-I Maximum: 60 Marks (1X12 = 12 Marks) (4X12=48 Marks) 1 Answer all questions (1X12=12 Marks) a) Define Clay b) Define Void ratio c) IS classification symbol of silty gravel is d) IS classification symbol of Clayey sands is e) State Darcy s law? f) State effective stress principle. g) In proctor s test, the weight of hammer is kg and its height of fall is cm h) Define compaction. i) Define compression index. j) Name the field shear test used for measuring undrained shear strength of soft clay k) At shrinkage limit, degree of saturation is l) What is Mohr circle? 2 a) What are major soil deposits of India? Explain their characteristics. b) The mass of an empty gas jar was kg. When completely filled with water, its mass was kg. An oven dried sample of soil of mass kg was placed in the jar and water was added to fill the jar and its mass was found to be kg. Determine the specific gravity of particles. 3 a) Briefly explain Formation of soil. b) Define: degrees of saturation; air content and density index. I 4 a) Describe the Indian Standard soil classification system. b) A sample of soil for a constant-head permeability test yields the following data: Diameter of the permeameter = 7.6 cm; length of the soil sample = 20.0 cm; head causing flow = 15.0 cm; quantity of water collected in 10 min = 150 cc G s = 2.65, γ sat = 20 kn/m 3. Determine (a) coefficient of permeability in cm/s, and (b) seepage velocity. 5 a) Discuss field identification methods for soils. b) The falling-head permeability test was conducted on a soil sample of 4 cm diameter and 18 cm length. The head fell feom 1.0 m to 0.40 m in 20 minutes. If the crosssectional area of the stand pipe was 1 cm 2, determine the coefficient of permeability.

8 14CE 505 CE315 II 6 a) Define total, neutral and effective stress. Explain quick sand condition. b) Standard Proctor compaction test in a mould of volume V = 945 cm 3 carried out soil sample yielded the following results: Mass of compacted wet soil (gm) W.C Determine the optimum moisture content and maximum dry density. 7 a) Sketch the variation in total stress, effective stress, and pore water pressure up to a depth of 6 m below ground level, given the following data. The water table is 2 m below ground level. The dry density of the soil is kn/m3, water content is 12 %, and specific gravity is What would be the change in these stress, if water- table drop by 1.0 m? b) What is Zero- Air- Voids line? Explain with a neat sketch. V 8 a) Explain the method of determination of consolidation charasteristics of soil in the laboratory. b) Describe direct shear test. What are its merits and demerits? 9 a) Define the terms Compression index, Coefficient of consolidation and Coefficient of compressibility. b) Describe the triaxial shear test. What are the advantages of triaxal shear test over the direct shear test?

9 14CE501 Fifth Semester Structural Analysis - 1 Answer Question No.1 compulsorily. (4X12=48 Marks) (1X12 = 12 Marks) 1. Answer all questions (1X12=12 Marks) a) Explain about Maxwell Reciprocal Theorem? b) Draw ILD for shear force at a section L/3 from left end of a simply supported beam of length L? c) What is the bending moment at fixed support in a propped cantilever beam of length L and which is subjected to a Point load P at center? d) What is the additional moment generated at a fixed support when it gets a settlement of δ? e) Write the Clapeyron s theorem of three moments when the members having different flexural rigidities? f) Explain about castigliano s second theorem? g) Define Strain Energy? h) Calculate the increase in length of a member whose length L due to its self weight W? The flexural rigidity is EI i) What is ILD and write its advantages? j) Write about virtual work method for calculating the deflections? k) What is the equation for calculating the strain energy in a member when it is subjected a bending moment M? l) What is a composite structure? 2. Calculate the deflection at point C for the propped cantilever beam shown in fig. by using Castiglianos first theorem? 60 kn 8 kn/m A 4m C 4m B 3. Calculate the deflection at point D in a given frame 50 kn A B 4 m (I) 5 m (3 I) 10 kn/m C 4 m (I) D

10 14CE501 I 4. A system of five loads 80kN, 160kN, 160 kn, 60 kn and 40 kn crosses a beam of 15 m span with 80 kn leading the distance between the loads are 2.4 m, 3.0m, 2.4 m and 1.8 m respectively. Find the maximum bending moment at the center of the span. Also find the absolute Maximum bending moment on the span? 5. A Uniformly distributed load of 15 kn/m and 6 m long crosses a girder of span 20 m. Calculate the maximum Shear force at a section 8m from left end and absolute maximum shear force? II 6. Draw Shear force and Bending moment diagrams for the fixed beam shown in fig.? 60 kn 15 kn/m A 6 m C 6 m B 7. Analyse the continuous beam shown in fig. by using the theorem of three moments? A 20 kn/m 80 kn 40 kn B C 6 m (2I) 1m E (I) 5m 2m D (I) V 8. Analyse the frame shown in fig. by using strain energy method? 50 kn B 4 m 2 m C 4 m 4 m A D 9. Calculate the member forces in a Truss shown in fig.? B C 3 m A E F D 40 kn 80 kn 4 m 4 m 4 m

11 14CE504 Fifth Semester Answer Question No.1 compulsorily. ENVIRONMENTAL ENGINEERING II (1X12 = 12 Marks) (4X12=48 Marks) 1 Answer all questions (1X12=12 Marks) a) Differentiate sewage and sullage. b) Define Dry Weather Flow. c) Which shape of combined sewer is most suitable d) Where do you use inverted siphons? e) What is importance of BOD/COD ratio? f) Differentiate soil pipe and waste pipe g) Where do you use Grease and Oil traps? h) What is the main difference between Standard rate and High rate Trickling filters i) Define sludge volume index j) List treatment Units come under attached growth system k) What is Elutriation? l) What is the limit of BOD of sewage for irrigation purpose 2 a) Differentiate conservancy and water carriage systems. 5M b) What is Run off coefficient? Give an account on determination of quantity of storm Sewage. 7M 3 a) Describe a typical Flushing tank and Inverted Syphon with neat sketches. b) Determine the size of a circular sewer for a discharge of 600lps running half full and hydraulic gradient of 1 in Assume mannings constant = I 4 a) Describe chemical Characteristics of sewage. 7M b) Write a note on disposal of septic tank effluents. 5M 5 a) What is BOD and derive its expression. What are the applications of BOD. 7M b) Design a circular clarifier to treat 4MLD of sewage. Allowable surface loading is lt/sq m/day 5M II 6 a) Explain the Activated sludge process with the help of a neat flow diagram. 5M b) Design a Standard rate Trickling filter to treat 6 MLD of sewage with inlet BOD of 220 mg/l and 7M outlet BOD of 50 mg/l. 7 a) With the help of neat sketch describe the functioning of a trickling filter. 7M b) what are the methods of aeration of sewage and describe Simplex process. 5M V 8 a) Differentiate Standard rate digestion and High rate digestion with neat sketches. 5M b) Explain the oxygen sag curve and discuss the factors affecting de-oxygenation and reaeration. 7M 9 a) Explain the factors affecting sludge digestion? 7M b) What is sewage sickness? How it can be prevented. 5M

12 Fifth Semester Answer Question No.1 compulsorily. 1.Answer all questions a) Define GIS b)vector data and raster data c) What is DEM? d) What is overlay? e) Active and passive remote sensing f) Spatial resolution g) Define watershed h) What is terrain analysis? i) Distinguish between a camera and sensor j) Define spectral reflectance k) What is Raleigh scattering l) What is data acquisition? 14CE506 REMOTE SENSING & GIS (1X12 = 12 Marks) (4X12=48 Marks) (1X12=12 Marks) 2. a) Explain the components of a remote sensing system with a neat sketch.. (8M) b) Describe various types of Resolutions. (4M) 3. a) Describe Electromagnetic spectrum with supporting diagram. (8M) b) Explain the significance of Electromagnetic bands in Remote sensing (4M) I 4. a) Distinguish aerial photography and remote sensing Discuss the advantages of Remote sensing (8M) b) What are different image elements used for visual interpretation (4M) 5. a) Describe the key components of GIS. (8M) b) Write the advantages of GIS than conventional maps (4M) II 6. a) Explain the spatial and non spatial data and compare (8M) b) List the advantages and disadvantages of raster data (4M) 7. a) Explain Raster overlay and vector overlay concepts with examples (8M) b) What is data manipulation (4M) V 8. a) Explain the procedure of groundwater recharge estimation using RS and GIS (8M) b) Role of RS and GIS in Land use and land cover mapping (4M). 9. a) Define GPS and Discuss the limitations and applications of GPS (8M) b) Explain GPS receivers (4M)

B.Tech III Year II Semester (R09) Supplementary Examinations December/January 2014/2015 World

B.Tech III Year II Semester (R09) Supplementary Examinations December/January 2014/2015 World Code: 9A01601 World DESIGN & DRAWING OF STEEL STRUCTURES Use of IS 800:2007, IS 806-1968, IS:875 (Part III)-1987, structural steel tables are to be permitted in the examination ha PART A (Answer any one