Name of the College : Mahatma Gandhi University
Department : Civil Engineering
Subject Code/Name : MCESC 105.2/BRIDGE ENGINEERING
Sem : I
Website : mgu.ac.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/mgu.ac.in/5009-MCESC%20105-2%20Bridge%20Engineering%20-set1.doc
MGU Bridge Engineering Model Question Paper
M.TECH. DEGREE EXAMINATION :
Model Question
First Semester
Related : MGU MCEGS106-4 Prestressed Concrete Structures M.Tech Model Question Paper : www.pdfquestion.in/5008.html
Paper – I
Branch : Civil Engineering
Specialization: Structural Engineering and Construction Management
MCESC 105.2 BRIDGE ENGINEERING
(Regular – 2013 Admission onwards)
Time : Three Hours
Maximum : 100 marks
Answer all questions. :
All questions carry equal marks. :
Any data, if required may be suitably assumed and clearly indicated.
Use of IS and IRC codes are permitted.
1. (a) A reinforced concrete simply supported slab is required for the deck of a road bridge having the following data:-
(i) clear span = 5.5 m.
(ii) width of carriage way = 7.5 m.
(iii) foot path on either side = 1m. wide.
(iv) Materials = M20 grade concrete and Fe 415 steel.
(v) Type of loading IRC class AA. Design the deck slab. Show the reinforcement details. (20 marks)
(b) Briefly discuss the economic span for bridges. (5 marks)
OR
2. (a) Design a box culvert having inside dimensions 4m × 4m for the following data.
Dead load = 12 kN/m2
Live load = 46 kN/m2
Density of soil = 18 kN/m3
Use M20 concrete and Fe 415 steel. (18 marks)
(b) Explain the various components of a bridge. (7 marks)
3. (a) Design the longitudinal girder of a T-beam and slab bridge for the following data. Effective span 18m, Carriage way width 7.5m, Kerb 600 mm on either side. Provide three longitudinal beams and five cross beams.
Loading IRC class AA tracked vehicle. Adopt M25 Fe415 bars. Also provide the reinforcement details. Use Courbon’s method for the calculation of reaction coefficients. (18 marks)
(b) Calculate the distribution coefficients of the above bridge using Henry – Jaegar method. (7 marks)
OR
4. Design the intermediate beam of a prestressed concrete bridge of clear span 25m. Assume the roadway width as 7.5 m., loading IRC class 70R tracked vehicle. (25 marks)
5. (a) What is the function of bearings in bridges? (5 marks)
(b) Design an elstomeric bearing at the sliding end of a bridge for the following data. Maximum Normal load 1000 kN, Minimum-normal load 200 kN, Transverse lateral load 40 kN, Longitudinal load 60 kN, Total longitudinal translation 15 mm, Rotation at support 0.0025 radians. Shear modulus of elstomeric bearing = 1.2 N/mm2. Allowable compressive stress for concrete = 7 N/mm2. Allowable compressive stress for elastomer = 10 N/mm2. (20 marks)
OR
6. (a) Design a reinforced concrete abutment using following data
Dimensions : shown in Fig. a
Superstructure : T-beam two –lane bridge of effective span 16.1m
Overall length : 17.26
Loading : As for National Highway
Back fill : Gravel with angle of repose =350
Unit weight of back fill w = 18kN/m2 (20 marks)
(b) Explain the functions of expansion joints and contraction joints. (5 marks)
7. (a) Why is bridge inspection important? (5 marks)
(b) Discuss in detail the inspection and maintenance of bridges. (20 marks)
OR
8. Discuss in detail the major cause of bridge failures. Indicate how these failures could be avoided. (25 marks)
Paper – II
M.Tech. Degree Examination :
Model Question :
First Semester
Branch : Civil Engineering
Specialization : Structural Engineering and Construction Management
MCESC 105. 2 Bridge Engineering : (Regular – 2013 Admission onwards)
Time : Three Hours
Maximum : 100 marks
Answer all questions :
Use of IS codes and IRC codes permitted
1. a) Explain the factors to be considered while selecting suitable site for a bridge (5 marks)
b). Design a slab culvert for the following data :
Effective span = 4.5m, Clear width of carriageway = 7.5m, Thickness of wearing coat = 70mm,provide footpath of 750mm wide on either side, Loading IRC Class A, Use M20 concrete and Fe 415 steel. Design and detail the slab bridge. (20 marks)
Or
2. a) Design a box culvert for the following data :
Inside dimensions of box culvert = 3m × 3m
Superimposed dead load on box culvert = 12 kN/m2
Live load on box culvert = 40kN/m2
Unit weight of soil = 18kN/m3, φ of soil = 300 , Use M20 concrete and Fe415 steel Consider only one load combination: DL+LL while no water inside the drain. (20 marks)
b) Explain with sketch the different types of bridges. (5 marks)
3. a) Write a short note on Hendry – Jeagar method. (7 marks)
b) Design the longitudinal girder of a T beam slab bridge for the following data :
Effective span = 17m, width of carriage way = 7.5m, thickness of wearing coat = 80mm, width of kerb = 600mm on either side, Live load : IRC Class AA tracked vehicle, Use M25 concrete and Fe415 steel, Assume 3 longitudinal girders and 7 cross girders. Use Courbon’s method. (18 marks)