(b) Enlist different types of spillway and discuss their choice of types.

AP — 2217 Eighth Semester B. E. (Civil) Examination Elective—II

OR

DAM ENGINEERING Explain Roller bucket type Energy dissipator and where it is used. 7 Explain the various types of energy dissipation devices used below spillway in relation to the TWRC arid JHC. 7

8 CE 04 P. Pages : 5 Time : Three Hours]

Note : (1) Separate answer book must be used for

Discuss about requirement and types with respect to the Head Regulators in a dam. 7 (2) (3)

Why 'Ventilation' is necessary in the barrel ? How is it achieved ?

OR

(4) (5)

10. (a) What is scale effect in model ? What will be the basis of spillway model scales ?

(6)

(b) What do you mean by bank connection ? Explain in brief. 6

11. (a) Describe the following instruments :— (i) Piezometers AP-2217

(ii) Joint meters. 7 1

[Max. Marks : 80

each Section in the subject Geology, Engineering material of civil branch and Separate answer—book must be used for Section A and 3 in Pharmacy and Cosmetic Tech. All question carry marks as indicated. • Answer three question from Section A and three questions from Section B. Assume suitable data wherever necessary. Illustrate your answer wherever necessary with the help of neat sketches. Use pen of Blue /Black ink /refill only for writing the answer book.

SECTION A. 1. (a) What preliminary investigations should be conducted for the selection of a dam site ? 7 AP-2217

P.T11_

(b) Determine the most economical height of the dam from purely construction point of view :— , Sr. No. Height of dam1 Construction Storage in Mm3 cost in million in meters Rs. 50 4 10 110 8 20 2 180 12 30 3 250 18 40 4 350 27 50 .) 500 39 60 6 600 50 65 7

(b) Discuss advantages and disadvantages of rock 6 fill dam. OR

(a) What is Rock fill dam ? Discuss the testing 7 of rockfill material.

4.

(b) Explain in brief foundation of Rockfill dam. 6

(a)

5.

(b) Compare Buttress and solid Gravity dam. 6

•

OR

OR

(a) How would you fix the spacing of buttress ? Explain the use of master curve 7 for the most economical spacing.

(a) What do you understand by men, money and material inventory with respect to the construction of dam ? Discuss in brief. 7

2.

Show that most economical central angle of 7 an arch is 133 ° 34'.

(b) Discuss the site requirement for an arch dam. 6

(b) Briefly describe different types of dams. What are their advantages and disadvantages ? 7

SECTION B

(a) Discuss the design considerations for rock 7 fill dam.

3.

AP 2217 -

2

7. (a) What is the purpose of providing gates on 7 spillway ? Explain radial gates. AP 2217 -

3

P.T.O.

(b) Explain in brief various methods for controlling the evaporation losses. 6 OR 12. (a) Discuss necessity and problems involved in raising height of dam. 7 (b) Explain in brief Pore Pressure Cell.

6

•

AP--2217

5

130