GTU Civil Engineering (Semester 8)
Design of Hydraulic Structures
December 2014
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


1 (a) Discuss factors affecting for the selection of dam site in detail.
7 M
1 (b) Explain briefly the factors affecting selection of dam type.
7 M

2 (a) Explain how construction operation is carried out in earthen dams?
7 M
2 (b) Discuss briefly the structural failure of earthen dam.
7 M
2 (c) Describe with neat sketch how to seepage line is drawn in homogeneous earth dam without any drainage arrangement?
7 M

3 (a) Show forces acting on a gravity dam with sketch.
7 M
3 (b) Explain stability requirements of a gravity dam.
7 M
3 (c) Discuss the properties of concrete used in the construction of a gravity dam.
7 M
3 (d) Draw the elementary profile of a gravity dam and explain various forces acting on it.
7 M

4 (a) Define spillway. What is the purpose of its provision? What are the essential requirements? Where the spillway is located?
7 M
4 (b) Describe briefly an ogee spillway.
7 M
4 (c) Define energy dissipaters. What are the needs to provide it?
7 M
4 (d) Determine the discharge through a chute spillway of ogee crest; length of spillway is 250m, height of spillway crest above u/s approach channel is 10m, width of approach channel is 250m and depth of water over spillway crest is 5m.
7 M

5 (a) What is canal fall? Why is it required to provide in a canal?
7 M
5 (b) Write short note on cross regulator.
7 M
5 (c) Discuss the various considerations according to which the location of a fall is Decided?
7 M
5 (d) Design a sarda type fall on a channel of 15cumecs, bed width 18m, depth 1.5m, u/s FSL 101m, bed level 99.5m, NSL 90.0, fall 1.0m and side slope 1/2:1.
7 M



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