Hydraulic Structures & Irrigation Design Drawing Jan 2014

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Sixth Semester B.E. Degree Examination, Dec.2013 /Jan.2ol4

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Hydraulic Structures and lrrigation Design Drawing

Max. Marks:100

Time: 4 hrs.

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Explain the varioui modes of failure of gravity dam and m€ntio; their remedies. (05 Marks) Design the practicalir'ofile of a gravity dam of stone masolrry given the following data: R.L. of base of danr: 1450 m ; R.L. of FRL: 1480.5 m Sp. gr. of the masonry: 2.4 ; Safe compressive stress for masonry: 1200 kN/m2 (10 Marks) Height of waves : 1 m.

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What are the causes of failure of earth damq? Explain them with relevant sketches.

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(05 Marks) Explain the zones of storage in a reservoir. yield of a reservoir and procedure the storage capacity Briefly expiain the for determining (10 Marks) using mass,,curve.

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PART _ A

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Note: 7. Answer any TWOfull questions from Part-A and ONEfull questionfrom Part-&. 2. Any missing data may be suitubly assumed.

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(10 Marks)

PART _ B

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iThe tank bund Design a sluice taking off from a tank irrigating 200 hectares at 1 through whieh the sluice is taking offhas a top width of 2 meters with 2:1 side slopes. The top level of bank is +40.00 and the ground level at site is +34.50: Good hard soil for foundation is available at +33.50. The sill of the sluice at offtake is +34.00. The maximum water level in tank is 38.00. The full tank level is +31.00. Average low water level of the tank is +35.00, The details of the channel below the sluice are as under. Bed level +34.00 F.S.L -34.50 Bed width 1.25 m (25 Marks) Side slopes l% to 1 with top of bank at +35.00

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Draw

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Half plan at top and half plan at foundation (ii) Sectionalelevation (iii) Side elevation.

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(20 Marks) (15 Marks) (10 Marks)

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Design a canal drop of 2 m with the following data: 1) Hydraulic particulars of the canal above drop Full supply discharge:4 cubic meters/second Bed width is 6.00 meters Bed level is +10.00 Full supply depth: 1.50 meters , F.S.L +11.50 ' Top of bank 2.00 m wide at level +12.50 Half supply depth : 1.00 m 2) Hydraulic particulars of canal below drop Full Supply discharge : 4 cubic meters/second Bed wiffi = 6.00 meters Bed level = +8.00 Full supply dipth: 1.50 meters

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F.S.L +9..50 Top of bank 2.00 rneters wide at level +10.50 -l The ground level at the site of work is +1Q.59 Good soil is available foi fo,undation at +8:.50 ....

Draw: (i) Half plan at top and half plan at fo'ilndation (ii1 Sectional elevation. (iii) Half sectional side elevation. .

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