CE321 Hall Ticket Number:

III/IV B.Tech (Supplementary) DEGREE EXAMINATION OCTOBER, 2016 Civil Engineering Sixth Semester Structural Analysis-II Time: Three Hours Maximum : 60 Marks Answer Question No.1 compulsorily. (1X12 = 12 Marks) Answer ONE question from each unit. (4X12=48 Marks) 1. Answer all questions (1X12=12 Marks)

(a) Define internal and external indeterminacies (b) What are the requirements to be satisfied while analyzing the structure? (c) What are the advantages of slope deflection method (d) Why does rigid jointed frame sway (e) Define carry over moment (f) Define distribution factor and relative stiffness for the member (g) What is meant by rotation contribution moment (h) What is the purpose of substitute frame method (i) Is three hinged arch is statically determinate or indeterminate structure? explain (j) What is meant by funicular polygon (k) What are cable structures and what is the nature of force in the cables? (l) Give the horizontal and vertical components of a cable structure subjected to UDL.

UNIT-I 2. Analyze the given continuous beam and draw the bending moment diagram by slope

deflection method if support B sinks by 15mm for all members take I=3.5x107mm4, E=20kN/mm2

(OR)

3. Analyze the given portal frame by the slope - deflection method. Sketch the bending moment diagram.

CE321 UNIT-II

4. Analyze the continuous beam loaded below by moment distribution method. Sketch the shear force and bending moment diagrams.

(OR)

5. Analyze the given portal frame by Moment distribution method. Sketch the bending moment diagram.

UNIT-III

6. A continuous beam ABCD simply supported over each support consists of spans AB, BC, CD OF lengths 3m, 4m, 3m respectively. The beam carries a udl of 12kN/m over the whole length. The supports B & C sink by 2mm and 7mm respectively. Determine the moments over each support by Kani’s method. E=200kN/mm2 and I=4x107mm4

(OR) 7. In a multi storied building the frames are spaced at 4m intervals. Dead load from slab is 3kN/m2 and

live load is 5kN/m2. Analyze the frame by two-cycle method Analyze the given multi storied frame by portal method.

UNIT-IV 8. A symmetric three hinged parabolic arch of span 20m and rise 3m is subjected to a 300kN

concentrated load moving from left to right. Determine the maximum positive & negative bending moments at 5m from the left support. Also determine the absolute maximum bending moment.

(OR) 9. (a) A suspension cable having supports at the same level, has a span of 30m and a

Maximum dip of 3m.The cable is loaded with a uniformly distributed load of 10kN/m throughout its length. Find the maximum tension in the cable. 8M (b) Explain effect of temperature changes in cables. 4M

CE 322 Hall Ticket Number:

III/IV B.Tech (Supplementary) DEGREE EXAMINATION October, 2016 Civil Engineering Sixth Semester Water Resources Engineering-II Time: Three Hours Maximum : 60 Marks Answer Question No.1 compulsorily. (1X12 = 12 Marks) Answer ONE question from each unit. (4X12=48 Marks) 1. Answer all questions (1X12=12 Marks) a) Name the various scopes of Engineering aspects of irrigation. b) What is Consumptive use? c) Draw a neat sketch of furrow irrigation. d) What is Sprinkler irrigation? e) What is a semi modular outlet? f) What is a cross drainage work? g) Write any two disadvantages of steel dams. h) What are the various forces acting on the gravity Dam? i) Define uplift pressure. j) What is a spillway? k) Define capacity factor. l) What is a Forebay?

UNIT I 2. a) Explain briefly different types of irrigation with neat sketches. (6M) b) Explain with a neat sketch of drip irrigation method. (6M)

(OR) 3. a) A field channel has a culturable commanded area of 2000 hectares. The intensity of irrigation for gram is 30% and for wheat is 50%.Gram has a kor period of 18 days and a kor depth of 12cm, while wheat has a kor period of 15 days and a kor depth of 15cm. Calculate the discharge of the field channel. (6M) b) What is Consumptive use of water and explain various methods for the direct measurement of consumptive use. (6M)

UNIT II

4. a) Briefly explain the semi modular outlet with a neat sketch. (6M) b) Explain the factors in the selection of suitable type an aqueduct. (6M)

(OR) 5. a) How are dams classified? Discuss in detail (6M) b) Discuss various factors governing selection of type of dam. (6M)

UNIT III

6. a) Explain the modes of failure of gravity dam. (6M) b) Design the practical profile of gravity dam for stone masonry for the given data: RL of the base of the dam= 198m,RL of HFL of Reservoir= 228m, sp. Gravity of masonry = 2.4, safe compressive stress of masonry= 120 t/m2 Height of waves= 1m. (6M)

(OR) 7. a) Write a shot note on galleries in gravity dam. (6M) b) Briefly explain the limiting height, low and high gravity dams. (6M)

CE 322

UNIT IV

8. a) Discuss about safe design criteria of earth dams. (6M) b) Differentiate between ogee spillway and side channel spillway with neat sketches. (6M)

(OR)

9. a) What is Hydro power? Explain the advantages and disadvantages. (6M) b) What are the various uses of flow duration and power duration curves? (6M)

CE 323 Hall Ticket Number:

III/IV B.Tech (Supplementary) DEGREE EXAMINATION October, 2016 Civil Engineering Sixth Semester Design of Concrete Structures-II Time: Three Hours Maximum : 60 Marks

Answer ONE question from each unit. (5X12=60 Marks)

Use of IS456-2000 is allowed in the examination.

Assume suitable data if necessary.

Unit I 1) An RCC short circular column of 5m height carries a service load of 400kN. Assume both the

ends of the column are fully restrained. Design the column with helical reinforcement using M20 grade concrete and Fe 415 grade steel using working stress method.

(OR) 2) Develop design procedure for continuous beam with illustrative example?

Unit II 3) Design a RC slab for a hall 5.0 m and 6.0 m long. The slab is supported on RCC beams each

250mm wide which are monolithic. The ends of the slab are supported on walls 350mm wide. Design the slab for a live load of 2.5kN/m2. Assume the weight of roof finishing equal to 1.5 kN/m2. Use M20 concrete and Fe 415 steel.

(OR) 4) Design a reinforced concrete slab 6.3m x 4.5m simply supported on all four sides. It has to carry a

characteristic live load of 10kN/m2 in addition to its dead weight. Assume M20 and Fe 415 bars.

Unit III

5) An RCC column is 450mm×400mm and has to carry a factored axial load of 1600KN. The unsupported length of column is 3m. Find the area of reinforcement required using limit state method. Use M20 and Fe415.

(OR) 6) A column 300 mm × 450mm sq is subjected to an axial load of Pu of 800kN. The column is

reinforced with 8 bars of 16 mm bars longitudinally which are distributed equally on all faces. Assume concrete grade M 20 and steel grade Fe 415 and a clear cover of 40mm. Determine the value of Pu when the eccentricity e from the x axis is 100mm.

Unit IV

7) Design a cantilever retaining wall (T type) to retain earth for a height of 4m. The backfill is horizontal. The density of soil is 18kN/m3. Safe bearing capacity of soil is 200kN/m2. Take the co-efficient of friction between concrete and soil as 0.6. The angle of repose is 30 degrees. Use M20 concrete and Fe415 steel.

(OR)

CE 323

8) a) Discuss types of retaining walls and forces acting on cantilever retaining wall? b) Illustrate stability requirements for cantilever retaining wall?

Unit V

9) Two interior columns A and B carry 700kN and 1000kN loads respectively. Column A is 350 mm x 350 mm and column B is 400 mm X 400 mm in section. The centre to centre spacing between columns is 4.6 m. The soil on which the footing rests is capable of providing resistance of 130kN/m2. Design a combined footing by providing a central beam joining the two columns. Use concrete grade M25 and mild steel reinforcement.

(OR) 10) Design a rectangular combined footing with a central beam for supporting two columns 400x400

mm in size to carry a load of 1000kN each. Center to center distance between the columns is 3.5m. The projection of the footing on either side of the column with respect to center is 1m. Safe bearing capacity of the soil can be taken as 190kN/m2. Use M20 concrete and Fe-415 steel.

CE 324 Hall Ticket Number:

III/IV B.Tech (Supplementary) DEGREE EXAMINATION October, 2016 Civil Engineering Sixth Semester Design of Steel Structures-II Time: Three Hours Maximum : 60 Marks

Answer ONE question from each unit. (5X12=60 Marks)

IS 800 : 2007, IS IS 805 : 1969, IS 875 (PART 3) : 1987, Steel Tables are to be supplied.

UNIT – I 1. Design a simply supported gantry girder for electric overhead traveling crane for an industrial application. The functional and structural requirements are: Crane capacity = 160kN. Weight of crane bridge/truss = 200 kN Weight of crab with motor = 60 kN Wheel base = 3.0 m Diameter of crane wheels = 0.15 m Span of crane girder/truss = 17.5 m Minimum hook approach = 1.0 m Centre to centre distance between gantry columns = 7.0 m Rail base width/height = 0.105 m Weight of rail = 0.4 kN/m Assume Fe410 grade rolled steel. Design of connections is not necessary.

(OR) 2. Design a simply supported gantry girder for manual overhead traveling crane for an industrial application. The functional and structural requirements are: Crane capacity = 180 kN Weight of crane bridge/truss = 200 kN Weight of crab with motor = 50 kN Wheel base = 4.0m Diameter of crane wheels = 0.15 m Span of crane girder/truss = 20 m Minimum hook approach = 1.2 m Centre to centre distance between gantry columns = 6.5 m Rail base width = 0.105m Weight of rail = 0.4 kN/m Assume Fe410 grade steel. Design of connections is not necessary.

UNIT – II 3. A simply supported welded plate girder has a span of 18 m and carries two concentrated service loads on the top flange at the one third points consisting of 400 kN dead load and 300 kN live load. In addition, it carries a uniformly distributed service dead load 15 kN/m (excluding self weight) and a live load 10 kN/m. The compression flange is fully restrained laterally. The reaction acts through cleat of thickness 15 mm at each end of girder. The grade of structural steel is Fe410. Design the plate girder with un-stiffened web.

(OR)

CE 324 4. Design a welded plate girder 24 m in span and laterally restrained throughout. It has to support a uniform load of 100 kN/m throughout the span exclusive of self weight. Design the girder without intermediate transverse stiffeners. The steel for the flange and web plates is of grade Fe 410. Design the cross section, the end load bearing stiffener and connections.

UNIT – III 5. The roof of an industrial building of overall length and width 48 m and 16.5 m, respectively, at Mangalore consists of trusses having configuration such that purlins are placed at nodal points spaced 1.55 m centre to centre. The span and pitch of the truss are 16 m and 1 in 5, respectively. The trusses are supported on 10 m high columns spaced 4.5 m centre to centre. The slope of land at the site which is surrounded by small industrial units is less than 30. Design an intermediate purlin using channel section without sag rods. Corrugated GI sheets are used as roofing material.

(OR) 6. Determine design wind pressure on a pitched roof of an industrial shed to be located at Hamirpur on upward slope of a 400 m high cliff with a slope of 1 in 4, at a distance 230 m from the crest of the cliff. The overall length and width of a building arc 48 m and 15 m, respectively. The centre to centre spacing of 10 m high roof columns is 5 m. centre to centre distance between columns along the width of the building is 14.5 m. Rise to span ratio of truss is specified as ¼. The designed life of building with medium permeability is to be 50 years.

UNIT – IV 7. Design an overhead riveted steel rectangular flat bottom tank of capacity 70000 liters. The available width of plates is 1.22 m and lengths up to 6.1 m. The staging consists of 4 columns spaced 4.88 m x 3.66 m and the bottom of the tank is 9.14 m above the ground level. Show the sketch of the tank.

(OR) 8. An elevated rectangular steel water tank, open at top is required to have a capacity of 90000 liters with a free board of not less than 150 mm. The bottom of the tank is at 12 m above ground level. Using 1.25 m x 1.25 m standard pressed steel plates and suitable allowable stresses, design the tank and its stays.

UNIT – V 9. A built up steel column comprising of two ISWB 400 sections with their webs spaced at 325 mm transmits a factored axial load of 3000 kN. The joints are connected by 10 mm thick battens. Safe bearing capacity of soil at site is 300 kN/m2. Concrete of grade M25 is used for the foundation bed. Permissible compressive stress in concrete is 4 N/mm2. Design a suitable slab base foundation for the column and sketch the details of the foundation.

(OR) 10. A beam column of overall length 5 m is subjected to a service axial load of 800 kN together with a major axis service moment of 30 kN-m. The weaker plane of the column is strengthened by bracing. If the column is pinned at both ends, design the beam column assuming Fe 410 grade steel and sketch details of the section. The design should conform to the specifications of the Indian standard code IS 800-2007.

CE 325 Hall Ticket Number:

III/IV B.Tech (Supplementary) DEGREE EXAMINATION October, 2016 Civil Engineering Sixth Semester Geotechnical Engineering - II Time: Three Hours Maximum : 60 Marks Answer Question No.1 compulsorily. (1X12 = 12 Marks) Answer ONE question from each unit. (4X12=48 Marks) 1. Answer the following (12X1=12Marks) a) List out design features of sampling tool b) What are geophysical methods of soil investigation? c) What are geostatic stresses? d) What is Taylor’s Stability Number? e) Mention different types of slope failures. f) Differentiate Isobar and Influence Line diagram g) Distinguish between Safe bearing capacity and allowable bearing capacity h) What are the different types of settlement which can occur in foundation? i) Mention various types of shear failure in soils below the foundation j) What do mean by Negative Skin Friction in pile foundation k) Draw the various shapes of wells l) Define CNS

UNIT I 2. a) Explain in detail various methods of soil investigations? (6M) b) A retaining wall of 10.0 m high with a smooth vertical back retains horizontal backfill. The

properties of backfill are cohesion, C = 12 kN/m2 and angle of internal friction, Φ = 31 degrees, total unit weight, γ = 16.2 kN/m3 and saturated unit weight, γsat = 20 kN/m3. The backfill carries a surcharge of 25 kN/m2. The water table is at a depth of 3.0 m below the surface of backfill. Sketch the active and passive earth pressure distribution on the back of the wall and determine the magnitude and line of action of resultant active and passive pressure (6M)

(OR) 3. a) Explain the design considerations for retaining wall stability and also state which theory can be

used for the estimation of earth pressure (8M) b) The observed SPT, N value in sandy soil at 8.0 metres level will be 8/7/18. The saturated unit

weight of the soil above the 8.0 m level will be 1.90 t/m3. The water level is at 6.0 metres below the ground level. Estimate the corrected N value. (4M)

UNIT II 4. a) Explain Bousssinesq’s theory and Westergaard’s theory with assumptions and also derive an

expression for vertical stress at any point inside the soil mass due to concentrated load.(8M) b) A cutting is to be made in clay for which the cohesion is 40 kN/m2 and angle of internal

friction = 0 degrees. The density of the soil is 20 kN/m3. Find the maximum depth for a cutting of side slope 1.5: 1 if the factor of safety is to be 1.50. Take the stability number as 0.70. (4M)

(OR)

CE 325

5. a) Explain in detail the stability analysis of finite slope by Method of slices mentioning the assumptions and derivation (6M)

b) A concentrated load of 2000 kN is applied at the ground surface. Determine the vertical stress at a point “P” which is 6 m directly below the load. Also calculate the vertical stress at a point “ R” which is at a depth of 6 m but at a horizontal distance of 5 m from the axis of the load.

Use Boussinesq’s theory (6M)

UNIT III 6. a) Explain in detail about settlement of soil deposits mentioning its causes, types and permissible

values (6M) b) Determine the allowable soil pressure for a raft 5 m x 5 m placed at 4.0 metres below the

ground in clayey soil having unconfined compressive strength of 20 t/m2 Take a factor of safety of 3.0 (6M)

(OR) 7. a) What is the effect of water table, depth and width of foundation on Bearing Capacity?

(4M) b) What is plate load Test. Discuss the uses of plate load test (8M)

UNIT IV

8. a) Classify different types of pile foundations according to material, load transfer, construction and function (4M)

b) A bored pile in a clayey soil failed at an ultimate load of 400 kN. If the pile is 400 mm diameter and 10 metres long, determine the capacity of a group of nine piles, spaced at 1.0 metre center to center both ways. (4M)

c) Mention various foundations on expansive soils (4M) (OR)

9. a) Describe the procedure for construction of well? Discuss the causes and remedies for Tilts and Shifts. (6M)

b) A Concrete pile 400 mm diameter, 9 metre long, is driven through a 6 m thick layer of silty sand [ = 20 degrees and = 1.7 t/m3] overlying a dense layer of sand [ = 35 degrees and = 1.95 t/m3]. If the water table is at the ground surface, estimate the safe load. (6M)