Construction Engineering - May 2014
MU Civil Engineering (Semester 8)
Total marks: --
Total time: -- INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary
Answer the following1 (a) Enlist grouting materials, grouting equipments & grouting methods used for grouting. 4 marks
1 (b) Explain the use of shaft in tunnelling. 4 marks
1 (c) What is economic life of an equipment? Explain. 4 marks
1 (d) Explain any one type of crane 4 marks
1 (e) Explain the working of power shovel 4 marks
2 (a) Explain the method of tunnelling in soft rock by 'Needle beam method' in detail. 4 marks
2 (b) Enlist all types of drilling equipments & explain any one drilling equipment in detail. 4 marks
3 (a) Determine hourly owning & operating cost of a machine from the data given below.
(a) Purchase Cost = Rs. 30 Lakhs.
(b) Useful Life = 12 years.
(c) Investment Cost = 20% of avg. Investment.
(d) Actual working = 3000 hours/ year.
(e) Salvage value. = Rs. 3 lakhs.
(f) Engine (Diesel) = 40 HP.
(g) Operating factor = 0.7
(h) Maintenance & repairs cost = Same as depreciation amount.
(i) Lubricant cost = 25% of fuel cost.
(j) Operator's Salary = Rs. 12000/- month. 4 marks
3 (b) Explain the points to be considered while selecting a construction equipment. 4 marks
4 (a) Enlist various types of pile driving equipments. Also explain any two of them in detail. 4 marks
4 (b) What are various types of compacting equipments? Also explain all types in brief with their suitability. 4 marks
Draw neat sketches for5 (a) (i) Stone column. 4 marks
5 (a) (ii) Grouting application. 4 marks
Explain5 (b) (i) Pilot Tunnel 4 marks
5 (b) (ii) Lining of Tunnel. 4 marks
6 (a) A m/c is down for 4%. 6%. 8%. 10% & 12% of time respectively in first five years. Its operating cost is Rs. 1000/- hour. Machine works for 3000 hours in a year. The average productivity factor is 0.7. Workout down time cost & cumulative downtime cost. 4 marks
6 (b) (i) Explain 'Vaccum Concrete' in detail 4 marks
6 (b) (ii) Define 'Stemming'. 4 marks
Write notes on following (any five)7 (a) Hot weather concreting 4 marks
7 (b) Concrete pump. 4 marks
7 (c) Liner plate method 4 marks
7 (d) Slip form 4 marks
7 (e) Tunnel Boring Machine. 4 marks
7 (f) Standard & special equipment. 4 marks
7 (g) Sand drain technique. 4 marks