Download Visvesvaraya Technological University (VTU) BE ( Bachelor of Engineering) Civil Engineering 15 Scheme 2020 January Previous Question Paper 7th Sem 15CV72 Design of RCC and Steel Structures

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Seventh Semester B.F. Degree Examination, De 04197 .2020

Design of RCC and Steel Structures

Time: 3 hrs. Max. Marks: 80

Note: I. Answer any TWO full questions, choosing ONE full question from each module.

2. Use of IS456, IS800, SP(6)-Steel Table is permitted.

3. Assume any missing data suitably.

Module- 1

1 Design a reinforced concrete combined rectangular slab footing for two columns located at

4.5 m apart. The overall sizes of the columns are 400mm x 400mm and 600mm x 600mm

and they are transferring 600 kN and 1000 kN respectively. The centre of the lighter column

in 0.4m from the property line. The safe bearing capacity of the soil 150 kN/m

2

. Use M20

concrete and Fe 415 steel. Sketch the reinforcement details. (40 Marks)

OR

2 Design a cantilever retaining wall to retain an earth embankment with a horizontal top 3.5m

above ground level. Density of earth 18 kN/m

3

, angle of internal friction (I) = 30?. SBC of

soil is 200 kN/m

3

. Take coefficient of friction between soil and concrete 0.5, Adopt M20

grade concrete and Fe 415 steel. (40 Marks)

Module-2

3 The centre line of a roof truss is as shown in the Fig.Q3. The forces in the members of the

truss due to dead load, live load and wind load is given below: Design the roof truss member

using M 16 bolts of property class 4.6. Also design a bearing plate and anchor bolts for a pull

of 40 kN. Use M20 grade concrete. Draw to suitable

(i) Elevation of truss greater than half space (ii) Support details.

Member DL (kN) LL (kN) WL (kN)

AB + 14.37 +21.80 -37.32

BC + 11.64 + 17.60 - 32.08

CD + 12.05 + 18.26 - 35.90

DE -5.13 -7.70 + 14.70

EC + 2.77 + 4.18 - 8.42

EB +2.77 +4.18 -9.15

EA -12.85 -19.36 +31.69

EF -7.69 -11.61 + 15.63

Sign :- + = Compression

- Tension

15CV72

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2.33,,

Fig.Q3 (40 Marks)

of 2

S.

,

3

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Seventh Semester B.F. Degree Examination, De 04197 .2020

Design of RCC and Steel Structures

Time: 3 hrs. Max. Marks: 80

Note: I. Answer any TWO full questions, choosing ONE full question from each module.

2. Use of IS456, IS800, SP(6)-Steel Table is permitted.

3. Assume any missing data suitably.

Module- 1

1 Design a reinforced concrete combined rectangular slab footing for two columns located at

4.5 m apart. The overall sizes of the columns are 400mm x 400mm and 600mm x 600mm

and they are transferring 600 kN and 1000 kN respectively. The centre of the lighter column

in 0.4m from the property line. The safe bearing capacity of the soil 150 kN/m

2

. Use M20

concrete and Fe 415 steel. Sketch the reinforcement details. (40 Marks)

OR

2 Design a cantilever retaining wall to retain an earth embankment with a horizontal top 3.5m

above ground level. Density of earth 18 kN/m

3

, angle of internal friction (I) = 30?. SBC of

soil is 200 kN/m

3

. Take coefficient of friction between soil and concrete 0.5, Adopt M20

grade concrete and Fe 415 steel. (40 Marks)

Module-2

3 The centre line of a roof truss is as shown in the Fig.Q3. The forces in the members of the

truss due to dead load, live load and wind load is given below: Design the roof truss member

using M 16 bolts of property class 4.6. Also design a bearing plate and anchor bolts for a pull

of 40 kN. Use M20 grade concrete. Draw to suitable

(i) Elevation of truss greater than half space (ii) Support details.

Member DL (kN) LL (kN) WL (kN)

AB + 14.37 +21.80 -37.32

BC + 11.64 + 17.60 - 32.08

CD + 12.05 + 18.26 - 35.90

DE -5.13 -7.70 + 14.70

EC + 2.77 + 4.18 - 8.42

EB +2.77 +4.18 -9.15

EA -12.85 -19.36 +31.69

EF -7.69 -11.61 + 15.63

Sign :- + = Compression

- Tension

15CV72

)111111L

2.33,,

Fig.Q3 (40 Marks)

of 2

S.

,

3

15CV7

OR

4 Design .a simply supported gantry girder to carry an electrically operated travelling crane

with the following details:

(i) Span of the crane bridge = 25 m

(ii) Span of the gantry girder 8 m

(iii) Wheel base = 3.5 m

(iv) Crane capacity 200 kN

(v) Weight of crane bridge = 150 kN

(vi) Weight of trolley (crab) = 75 kN

(vii) Minimum hook distance 1.0 in

(viii)Weight of rail = 0.30 kN/m

(ix) Height of rail = 105 mm

Draw neatly cross section of gantry girder showing all details. Also draw side view.

(40 Marks)

2 oft

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This post was last modified on 02 March 2020