SPPU Civil Engineering (Semester 8)
Dams and Hydraulic Structures
May 2017
Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) State the objectives regarding the instrumentation in dam safety.
3 M
1(b) Differentiate between large dam and small dam.
3 M

2(a) What are the types of arch dams? Write the merits and demerits of arch dams.
3 M
2(b) What factors govern the selection of type of dam?
3 M

Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a) State any three forces acting on gravity dam and write their equations.
3 M
3(b) Write short note on:
i) Construction Joint.
ii) Drainage Gallery.
3 M

4(a) Write a note on galleries in gravity dam with respect to location, size, shape and function.
3 M
4(b) Write short note on buttress dams.
3 M

Solve any one question from Q.5(a,b) &Q.6(a,b)
5(a) Draw neat sketch of any one type of spillway gate and explain.
4 M
5(b) Write short note on safety and maintenance of spilway gate.
4 M

6(a) Explain pumped storage type of hydro-electric power plant.
4 M
6(b) Write advantages and limitations of hydro power plant.
4 M

Solve any one question from Q.7(a,b) &Q.8(a,b)
7(a) Explain Swedish slip circle method of stability analysis with neat sketch.
8 M
7(b) Write note on Khosla's theory application for design of structure on permeable foundations. Also explain the importance of exit gradient.
8 M

8(a) Explain Bilgh's theory of seepage with neat sketch. State its limitations.
8 M
8(b) Determine the factor of safety of downstream slope of (homogenous section) an earthen dam drawn to a scale of 1:750 for the following data.
i) Area of N-reactangle = 20cm2
ii) Area of T-rectangle = 10cm2
iii) Length of slip circle arc = 20cm2
iv) Angle of internal friction = 26°
v) Cohesion C' = 4000 Kg/m2
vi) Specific weight of soil = 1760 Kg/m3
8 M

Solve any one question from Q.9(a,b) &Q.10(a,b)
9(a) How irrigation canals are classified? Also describe the various considerations made in the alignment of an irrigation canal.
8 M
9(b) Design an irrigation canal in alluvial soil according to lacey's factor theory.
i) Full supply discharge = 12m3/s,
ii) Lacey's silt factor = 1,
iii) Channel side slope = 1/2:1
8 M

10(a) State various types of canal falls and explain any one with the help of neat sketch.
8 M
10(b) Explain the procedure of designing cross regulator.
8 M

Solve any one question from Q.11(a,b) &Q.12(a,b)
11(a) Write short notes on:
i) Launching Aprons,
ii) Stepped fall,
iii) Weir type escape,
iv) Hokey head groynes,
v) River training work.
10 M
11(b) What is Groynes? State the classification of Groynes.
8 M

12(a) Write short note on:
i) Pipe aqueduct,
ii) Super passages,
iii) Syphon aqueduct,
iv) Level crossing,
v) Inlet and outlet.
10 M
12(b) What do you mean by C.D. works? Write the factors for selection of C.D. Works. Also explain design consideration of it.
8 M

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