DEPARTMENT OF CIVIL ENGINEERING
HYDROLOGY AND DAMS
(B-TECH 7TH SEM)
COURSE CODE : BTCE - 817
External Marks: 60, Internal Marks: 40 Total Marks: 100
UNIT 1
UNIT 1
1) Introduction, Precipitation: Importance of hydrological data in water resources planning. The hydrologic cycle. Mechanics of precipitation, types and causes, measurement by rain gauges, Gauge net-works, hyetograph, averaging depth of precipitation over the basin, mass-rainfall curves, intensity duration frequency curves, depth area-duration curves.
UNIT 2
2)
a) Interception, Evapo-transptration and Infiltration: Factors affecting interception, evaporation from
free water surfaces and from land surfaces, transpiration, Evapo-transpiration.
b) Infiltration Factors affecting infiltration, rate, Infiltration capacity and its determination.
UNIT 3
3) Runoff: Factors affecting runoff, run-off hydrograph, unit hydrograph theory, S-curve hydrograph, Synder’s synthetic unit hydrograph.
UNIT 4
4) Peak Flows: Estimation of Peak flow-rational formula, use of unit hydrograph, frequency analysis, Gumbel’s method, design flood and its hydrograph.
UNIT 5
5) Gravity Dams-Non Overflow Section: Forces acting, Stability factors, stresses on the faces of dam,Design of profile by the method of zoning, elementary profile of a dam.
UNIT 6
6) Gravity Dams-Spillways: Creagers profiles neglecting velocity of approach, profile taking velocity of approach into account, Upstream lip and approach ramp, Advantages of gated spillways, Discharge characteristics of spillways.
UNIT 7
7) Arch and Buttress Dams: Classification of arch dam- constant radius, constant angle and variable radius , Cylinder theory, Expression relating central angle and Cross-Sectional area of arch. Types of buttress dams, Advantages of buttress dams.
UNIT 8
8) Earth Dams: Components of earth dams and their functions, Phreatic line determination by analytical and graphical methods.
REFERENCE
1. Engineering Hydrology - J.Nemec, Prentice Hall2. Engineering Hydrology by Stanley Buttler, John. Wiley
3. Ground Water Hydrology by TODD, John. Wiley
4. Engineering for Dams Vol. II & III by Creager Justin & Hinds. John. Wiley
5. Hydrology by. S.K.Garg, Khanna Pub
6. Hydrology Principles, Analysis and Design by. Raghunath, H M, New Age Int. Pub