BE - SEMESTER-VIII (NEW) EXAMINATION — WINTER 2018
Subject Code: 2180601
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Subject Name: Design Of Hydraulic Structures
Date: 19/11/2018
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q1
(a) Discuss salient features of Narmada dam. 03
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(b) What are the advantages and disadvantages of gravity dam over other dams 04
(c) Describe the factors on which selection of site for a dam depends 07
Q2
(a) What do you understand by the elementary profile and a practical profile of gravity dam? 03
(c) Enlist various causes of failure of an earth dam. Discuss only structural failure causes in earth dam 04
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(a) Calculate the seepage through an earth dam resting on an impervious foundation. The relevant data given below: 07
Height of dam = 60.0 m
Upstream slope =2.75 : 1 (H:V)
Free board =2.5 m
Crest width=8.0 m
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Length o drainage blanket = 120.0 m
Coefficient of permeability of the embankment material
in X-direction =8 x 107 m/s
Y-direction =2 x 107 m/s
OR
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(a) Define phreatic line in earthen dams. Also discuss procedure for locating phreatic line‘in a homogeneous earth dam with a horizontal drainage filter 07
Q3
(a) What are the different types of earthen dams? 03
(b) Differentiate' High dam and low dam. 04
(c) The figure 1" gives profile of a gravity dam with reservoir level as shown. If the coefficient of friction is 0.75, is the dam safe against sliding? Take weight density of concrete = 2.4 tonnes/m? 07
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