Advanced Construction & Equipment - May 2014

Civil Engineering (Semester 6)

TOTAL MARKS:
TOTAL TIME: HOURS

1 (a) Under which situation an Under Reamed piles are required ? Explain construction procedure of it.(7 marks) 1 (b) Discuss the well sinking operation with sketches.(7 marks) 2 (a) List different types of hammers used for pile driving. Give advantages and disadvantages of each.(7 marks) 2 (b) Explain with sketches, de-watering by well-point system.(7 marks) 2 (c) What are the reasons of pulling out piles from their positions ? What are the methods adopted for it ?(7 marks) 3 (a) Where do you prefer the construction of coffer-dams ? What are its design features ? Explain with sketch construction of Rock-fill coffer-dam.(7 marks) 3 (b) Where do you prefer pneumatic caisson ? Describe its construction procedure with sketch.(7 marks) 3 (c) Explain with sketch construction of cellular coffer-dams. How do you control the leakage of water from coffer-dams.(7 marks) 3 (d) What is tilt and shift in construction of caissons ? How can you rectify the tilting of caissons ?(7 marks) 4 (a) 1 Centering.(4 marks) 4 (a) 2 Shuttering.(3 marks) 4 (b) How do you select the method of de-watering and control of ground water in Excavation ?(7 marks) 4 (c) Explain with sketches formwork for (i) RCC column and (ii) RCC wall(7 marks) 4 (d) What are the advantages and disadvantages of Chemical Grouting method for underground water control ? In which situation Electro Osmosis method of under ground water control is preferred ?(7 marks) 5 (a) Explain the situations under which demolition of a structure is required ? List the factors considered before demolition of a structure is carried out.(7 marks) 5 (b) Define (i) Repair and (ii) Retrofitting. Differentiate between them. How retrofitting of concrete column is done ?(7 marks) 5 (c) What are the advantages and disadvantages of pre-stressed concrete ? Explain methods of pre-stressing.(7 marks) 5 (d) Explain with neat sketch about provision of horizontal reinforcement and vertical reinforcement in masonry structures as per Indian Standard.(7 marks)