Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 8th Sem Old 180601 Design Of Hydraulic Structures Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VIII (Old) EXAMINATION ? WINTER 2019
Subject Code: 180601 Date: 27/11/2019
Subject Name: Design Of Hydraulic Structures
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a)
Explain the classification of dams based on hydraulic design and structural
design.
07
(b) Enlist various causes of failure of an earth dam. Discuss only structural
failure causes in earth dam.
07
Q.2 (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
(b) What is spillway? What are the requirements of spillway? Explain any two
spillway with neat sketch.
07
OR
(b) Discuss factors affecting for the selection of dam site in detail. 07
Q.3 (a) Define energy dissipaters. What are the needs to provide it? 07
(b)
Design practical profile of a gravity dam for the given data:
? R.L. of base of dam = 49 m
? R.L. of H.F.L. = 98 m
? Safe compressive stress in concrete = 2450 KN/m2
? Specific gravity of concrete = 2.4
? Height of waves = 1.5 m
OR
Q.3 (a) Explain the procedure for designing a Straight Glacis Fall . 07
(b)
A homogenous earth dam has water depth of 25 m in the reservoir. The dam
has free board of 3 m. The top width of earth dam is 6 m. The upstream slope
of dam is 3 H to 1 V and downstream slope is 2 H to 1 V. The dam is
constructed on an impervious strata. The coefficient of permeability of dam
material (K) is 7 x 10
-8
m/s. Plot the corrected seepage line on graph paper and
estimate the seepage loss per unit length of the dam.
07
Q.4 (a) Write a short note on inspection galleries and contraction joints in gravity
dam.
07
(b)
Draw a neat sketch of rock-fill dam. How is the seepage of water controlled
through the body of rock-fill dam?
07
OR
Q.4 (a)
Explain for an earth dam the function of (i) cut-off trench (ii) horizontal filter
and (iii) riprap with neat sketches.
07
(b) Explain how the storage capacity of reservoir and height of dam are
determined.
07
Q.5 (a)
Explain with a neat sketch the functions of head regulator.
07
(b) Explain how the ogee spillway is designed . 07
OR
Q.5 (a) Explain stability requirements of a gravity dam. 07
(b)
Discuss the effect of inertia force and hydrodynamic pressure on gravity dam.
07
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This post was last modified on 20 February 2020