Courses offered to the students of BS in Agricultural Engineering:

 

IWM 101 Bioresources Engineering Pathway (1+0 Credits)

IWM 162 Fluid Mechanics (2+1 Credits)

IWM 146 Hydraulics (2+1 Credits)

IWM 253 Groundwater Hydrology (3+1)

IWM 301 Hydraulic Engineering (3+1)

IWM 321 Surface water Hydrology (3+1)

IWM 339 Geoengineering and Climatic Models (3+1 Credits)

IWM 342 Irrigation Engineering (3+1.Credits)

IWM 365 Soil and Water Conservation Engineering (2+1Credits)

IWM 385 River Engineering and Basin Management (3+1Credits)

IWM 406 Land and Watershed Management (2+0 Credits)

IWM 415 Pumps and Well Technology (3+1 Credits)

IWM 421 Design of Hydraulic Structures (3+1 Credits)

IWM 433 On-Farm Water Management (2+1 Credits)

IWM 439 Drainage and Reclamation Engineering (2+0 Credits)

IWM 453 Hydraulic Machinery (2+0 Credits)

IWM 101 Introduction to Agricultural Engineering (1+0)

Overview of Agricultural and Biological Engineering discipline: Case studies and engineering design problems. Case studies of engineering applications where these agricultural and biological principles have been leveraged for design.

Introduction to engineering design, and manufacturing processes: Process of design along with approaches to solving engineering problems, manipulations and presentations of engineering data and applied engineering concepts.

Introduction to engineering majors: Career exploration, opportunities of engineering practices within realistic constraints, e.g. economic, environmental, ethical, health and safety, and sustainability; pathways to success in engineering.

Familiarization: Laboratories, workshops, fabrication and computer facilities, internships, and other opportunities.

Communication: Emphasis on technical communication and problem-solving skills.

IWM 162 Fluid Mechanics 2+1

Fundamental properties of fluid: Fluid, Unit used in hydraulics, General properties of fluid.

Principles of hydrostatic pressure: Unit pressure, Resultant pressure, Pascal’s Law, Free surface of a liquid, Atmospheric, absolute and gage pressure, Variation of pressure with depth in a fluid, Pressure head, Vapor pressure, Manometer, Open manometer, Single-tube manometer, Differential manometer, Micro-manometer, Piezometer.

Hydrostatic pressure on surfaces: Total pressure on plane surfaces, Center of pressure on plane surface, Position of center of pressure with respect to center of gravity, Total hydrostatic pressure on curved surfaces.

Fundamentals of fluid flow: Flow of fluids, Path lines and stream tubes, Laminar and turbulent flow, Equation of continuity, Velocity head and total head of a fluid, Steady and unsteady flow, Uniform and non-uniform flow-, One-, two- and three-dimensional flow.

Practical

  1. Distinguishing properties of different liquids;
  2. Determination of viscosity and shear stress of fluids.
  3. Determination of location of center of pressure for a submerged vertical plane surface;
  4. Determination of location of center of pressure for a submerged inclined plane surface;
  5. Demonstration and characterization of of fluid flows

IWM 146 Hydraulics 2+1

Fluid flow equations: Euler’s equation. Bernoulli’s energy equation, Application of Bernoulli’s equation in one- and two-dimensional flow, Flow of gases.

Flow through orifices: Flow through orifice, Coefficient of velocity, contraction and discharge, Head loss in orifice, Standard orifice coefficients and their variations, Submerged orifice, Orifice under low heads.

Flow over notches and weirs: Definitions, Fundamental theory, Standard weir, Standard weir formulas; Rectangular, triangular and trapezoidal weir; Flow over broad crested and submerged weir, Time of emptying reservoir with a rectangular weir

 Practical

  1. Determination of coefficient of orifices;
  2. Determination of coefficient of notches and weirs;
  3. Determination of coefficient of venturi meter;
  4. Verification of Bernoulli’s energy equation;
  5. Demonstration of different types of flow.

 Text Books

  1. Hydraulics by H. W. King, C. O. Wisler, J. G. Woodburn; John Willey & Sons Inc., USA.
  2. Hydraulics and Fluid Mechanics by E. H. Lewitt; Sir Isaac Pitman & Sons Ltd., UK.

References Books

  1. Engineering Fluid Mechanics – by K.L. Kumar, Eurasia Publishing House (P) Ltd., New Delhi, India.
  2. A Text Book of Fluid Mechanics – by R.S. Khurmi, S. Chand and Company Ltd., New Delhi, India.
  3. Fluid Mechanics and Hydraulics – by Jagdish Lal, Metropolitan Book Co. Private Ltd., New Delhi, India.

IWM 253 Groundwater Hydrology (3+1)

Theory

Introduction: Concept and subject matter of groundwater hydrology

Sub-surface Geology: Rocks and minerals, and their types and properties.

Origin and Occurrence of Groundwater: Sub-surface water and groundwater, Vertical distribution of groundwater, Types of sub-surface formation, Types and hydrogeological properties of aquifers.

Groundwater Movement: Darcy’s law for one, two- and three-dimensional flow, Groundwater flow equations, Flow net analysis, Groundwater contour map and flow directions, One-dimensional flow through aquifers

Groundwater Exploration: Surface investigation of groundwater – Geologic and hydrologic methods, Remote sensing and geophysical techniques; Sub-surface investigation of groundwater – Test drilling and geophysical logging techniques

 Practical

  1. Determination of specific yield, specific retention, and hydraulic conductivity of aquifer samples
  2. Determination of transmissibility of aquifer samples,
  3. Measurement of water level depth in monitoring well and tube well using different devices,
  4. Preparation and analyses of groundwater contour map and flow-net,
  5. Collection and analysis of sub-surface formation materials, and
  6. Plotting of grain-size distribution curves and bore-logs

 Textbooks

  1. Groundwater – by H.M. Raghunath, Wiley Eastern Ltd., New Delhi, India.
  2. Groundwater Assessment Development and Management – by K. R. Karanth, Tata McGraw-Hill Publishing Company Ltd., 3rd Edition, New Delhi.
  3. Groundwater Hydrology – by Bouwer, McGraw Hill Book Co., New York, USA.

IWM 301 Hydraulic Engineering (3+1)

Pipe flow: Critical velocities in pipes; Velocity head in a pipe; energy loss in pipes, pipe fittings, and valves; pipe diagrams,

Pipe flow: through bends, parallel, and branches, pipe of different diameters connected in series; Flow in pipe networks,

Introduction to open channel flow, Kinds of open channel, Types of open channel flow, Effects of viscosity and gravity on open channel flow, Velocity and pressure distribution in open channel section., Governing equations for steady one dimensional flow, Specific energy

Critical Flow: Section factor and hydraulic exponent for critical flow computation, Computation of critical flow and depth, Transition problems in open channel

Uniform Flow: Introduction, establishment, velocity distribution, uniform flow formulas, Computation of uniform flow Computation of normal and critical slopes, Channel section with composite roughness, Compound cross section, Computation of flood discharge by slope-area method

Design of channels Introduction to no-uniform flow in open channel, Hydraulic jump and its uses

 

Practical

  1. Study of hydraulically operated gates.
  2. Study of pipe flow phenomenon & determination of head losses in pipes.
  3. Study of different types of open channel flow,
  4. Determination of Manning’s roughness coefficient (including composite roughness coefficient)
  5. Study of velocity distribution in an open channel,
  6. Determination of energy and momentum correction factor,
  7. Design of open channels, and computation of critical flow
  8. Study of flow over a hump and calibration of a broad crested weir,
  9. Study of non-uniform flow (hydraulic jump and fall)

 

Text Book

  1. Hydraulics and Fluid Mechanics – by E.H. Lewitt, 10th Edition, 1963, The English Language Book Society and Sir Issac Pitman & Sons Ltd., London, U.K.
  2. Open Channel Hydraulics – by V.T. Chow, McGraw-Hill, Kogakusha, Ltd., Tokeyo, Japan.

References Book

  1. Flow Through Open Channel – by K.G. Ranga Raju, Tata McGraw-Hill Publishing Company Ltd., New Delhi, India.
  2. Flow in Open Channel – by K. Subramanya, Tata McGraw-Hill Publishing Company Ltd., New

Delhi, India.

 

IWM 321 Surface water Hydrology Groundwater Hydrology 3+1

Introduction: Hydrologic cycle and processes; Field, catchment and global scale hydrology; Precipitation and its estimations; Scope and importance of hydrology.

Evaporation: Factors affecting evaporation and transpiration; Measurement of evaporation- direct and indirect methods;

Infiltration and Soil Water Movement: Factors affecting infiltration; Infiltration measurement – Ring, Tension infiltrometers; Infiltration models – Horton, Richards, Green and Ampt, and Phillip equations, Indices.

Runoff and Streamflow: Components of runoff; Factors affecting runoff; Surface runoff estimation techniques; Overland flow and its dimensional analysis; Flow-duration curve and Flow-mass curve; Streamflow – Measurement of stage and discharge, Stage-discharge relationship, Planning of stream flow network.

Hydrographs: Segments of a hydrograph; Factors and shape of hydrograph; Hydrograph separation; Unit hydrograph concept, Derivation and application of unit hydrographs.

Flood Routing: Hydrologic techniques; Channel routing – Muskingum method, Muskingum-Cunge method, Reservoir routing.

Reservoirs: Physical characteristics, yield, capacity, sedimentation and site selection.

Time Series and Probability Analysis: Homogeneity, stationarity, trend, and periodicity in time series data; Probability distributions; Analytical and graphical methods of flood-frequency analysis; Low-flow analysis; and Estimation of dependable rainfall.

 

Practical

  1. Computation of average precipitation over an area, estimation and analysis of rainfall data,
  2. Estimation of reservoir capacity and evaporation,
  3. Measurement of stream flow using current meter, water level sensors and datalogger,
  4. Extension of rating curves,
  5. Derivation and applications of unit hydrograph,
  6. Demonstration of rainfall-runoff simulator,
  7. Computation of outflow through reservoir routing,
  8. Computation of downstream flow through channel routing,
  9. Analysis of time series data, Flood frequency analysis by analytical and graphical methods,

 

Text Books

  1. Hydrology for Engineers – by R.K. Linsley, Max A. Kohler and J.L.H. Paulhus, McGraw-Hill Book Company.
  2. Engineering Hydrology Principles and Practices by Victor M. Ponce, Prentice Hall Inc.
  3. Engineering Hydrology – by K. Subramanya, TATA McGraw Hill Publishing Company Limited.
  4. Introduction to Hydrology- by W. Viessman, Jr., J.W. Knapp, G. L. Lewis and T.E. Harbaugh, Harper & Row Publishers.
  5. Water Resources Engineering – by R.K. Linsley and J.B. Franzini, McGraw­-Hill Book Company

 

IWM 339 Geoengineering and Climatic Models 3+1

Introduction: Climate, and atmospheric processes and instrumentation for geoengineering.

Atmospheric Scales: Time-space scaling, Boundary layers, and Radiation driven Processes.

Atmospheric Turbulence & Near surface turbulence: Navier-Stokes equation for mean motion, turbulent equation of motion, closure technique (local or first degree, and higher order), Roughness, zero-plane displacement, and profiles in plant canopies. Coupling between atmosphere and plant canopy.

Hydroclimatic transport sub-model: ET(P-M) formalism, Detachment equations and overland flow, Saint-Venant equations of continuity and momentum, Sediment Transport model, 2D laminar flow model

Preliminary Climate models: Introduction to Climate Models, Radiant heat transfer model: Box models, Zero-dimensional model for Temperature and Radiative-convective models.

Intermediate Models: Earth-system models of intermediate complexity; Climber-2 and MOM-3 model.

Coupled models: General circulation models i.e., CLIMBER-3α model, HadCM3, EdGCM, GFDL CM2.X, ARPEGE-Climat.

Climate Change and Crop Production: Four scenario families of IPCC (A1, A2, B1, and B2), Predictions related to Bangladesh, Possible impacts on crop production.

 

Practical

  1. Important Measurements: temperatures, relative humidity, vapor pressure, dew point
  2. Important Measurements: radiation – direct, diffused, and net; wind speed and direction;
  3. Estimation of missing values of weather parameters;
  4. Study of preliminary climate models,
  5. Study of EMICs
  6. Working with a coupled AOGCM model (6, 7, 8 & 9th week)
  7. Downscaling for a specific areal grid.

 

Textbooks

  1. Hartmann, Dennis L., 1994: Global Physical Climatology, (Academic Press, San Diego).
  2. Climate Change 2001: The Scientific Basis (Cambridge Univ. Press, Cambridge), [IPCC Working Group I Third Assessment Report] http://www.grida.no/climate/ipcc_tar/wg1/
  3. Climate Change 2001: Impacts, Adaptation, and Vulnerability (Cambridge Univ. Press, Cambridge), [IPCC Working Group II Third Assessment Report] http://www.grida.no/climate/ipcc_tar/wg2/
  4. Climate Change 2001: Mitigation (Cambridge Univ. Press, Cambridge), [IPCC Working Group III Third Assessment Report] http://www.grida.no/climate/ipcc_tar/wg3/
  5. https://scied.ucar.edu/interactive/simple-climate-model
  6. https://studyabroad.sit.edu/wp-content/uploads/2021/12/2022SFA-ICC-ENGR3000.pdf
  7. Principles of Environmental Physics– by J.L. Monteith, Edward Arnold Ltd., London, 1980.
  8. Microclimate: The Biological Environment – by J.R. Norman, John Wiley and Sons, New York, 1974.

 

IWM 342 Irrigation Engineering 3+1

Introduction: Necessity, scope and history of irrigation, total and supplemental irrigation, sources of irrigation water.

Soil water-plant-atmosphere continuum: Classes and availability of soil water, Soil moisture characteristics, Mathematical models of water transport along soil-plant-atmosphere system.

Consumptive Use: Factors affecting consumptive use. Mathematical deductions of ET models, effective rainfall, CWR, GWR and NIR based irrigation scheduling. Duty, delta, and base period.

Water Application Methods: Pressurized and non-pressurized systems, suitability criteria and their advantages, Irrigation Efficiencies in Surface irrigation, Subsurface irrigation, Sprinkler and Micro/Drip irrigation.

Farm irrigation System Design: Components and accessories required for different systems and their cost estimation, Water Diversion, Conveyance and Water use efficiencies, DDIR and Management Allowed Deficit.

Farm irrigation System Evaluation: Sampling: difference between pressurized and non-pressurized systems, distribution uniformity, lower quarter distribution uniformity etc.

Cost estimation: Calculation of ADIC for irrigation project elements, Concept of NPV and Amortization in irrigation project design. Estimation of water Charge.

 

Practical

  1. Soil moisture measurements and calibration for sensors and digital devices
  2. Lysimeter vs climatic models for measurement of evapotranspiration;
  3. Estimation of DDIR from climatic information for winter crops.
  4. Demonstration of various irrigation methods and primary requirements;
  5. Calculation of irrigation efficiencies;
  6. Construction of microirrigation systems and identification of its components and trouble shooting.
  7. Construction and troubleshooting of a sprinkler system, and identification of various nozzles.
  8. Field visit of irrigation projects and report writing.

 

Text Books

  1. Principles of Farm Irrigation System Design – by Larry G. James, John Wiley and Sons.
  2. Irrigation: Theory and Practice – by A. M. Michael, Vikas Publishing House Pvt. Ltd.
  3. Irrigation: Design and Practice – by Bruce Withers and Stanley Vipond, Cornell University Press, New York.
  4. Soil and Water Conservation Engineering – by Glenn O. Schwab, Richard K. Frevert, Talcott W. Edminster and Kenneth K. Barnes, John Wiley & Sons, Inc.

 

IWM 365 Soil and Water Conservation Engineering 2+1

Introduction: Importance of natural resource conservation: Principles of Soil Erosion, Causes of Soil Erosion, Types of Soil Erosion, Mechanics of Soil Erosion

Water Erosion and Control: Forms and types of Water Erosion, Factors Affecting Water Erosion, Mechanics of Water Erosion Control, Agronomical Measures of Water Erosion Control

Terraces: Terraces and their Design, Bench Terracing, Types of Bench Terraces, Design of Bench Terraces, Alignment of Bench Terraces, Area Lost for Cultivation due to Bench Terracing, Maintenance of Bench Terraces

Bunding: Mechanical Measures for Water Erosion Control, Bunds (Contour Bunds, Graded Bunds) and their Design, Design Specification of Bunds, Construction of Bunds

Gully Erosion: Development of Gullies, Classification of Gullies, Principles of gully Control Measures, Classification of Gully Control Measures or Structures

Drop Spillway: Permanent Gully Control Structures (PGCS), Salient Features of PGCS Planning for Design, Design Procedure, Basic Components of PGCS, Drop Spillway, Design of Drop Spillway

Drop Inlet Spillway: Design of Drop Inlet Spillways, Components of Drop Inlet Spillway

Chute Spillway: Components of Chute Spillway, Applicability, Material for Construction, Design Features

Wind Erosion, Estimation and Control: Wind Erosion, Factors Affecting Wind Erosion, Mechanics of Wind Erosion, Estimation of Soil Loss Due to Wind Erosion. Control Measures: Vegetative Measures, Tillage Practices, Mechanical Measures, Sand Dunes Stabilization

Sediment Yield Estimation: Estimation of Soil Loss, The Universal Soil Loss Equation (USLE), Use of USLE, Limitations of Universal Soil Loss Equation, revised (RUSLE), and Modified Universal Soil Loss Equation (MUSLE), Assumptions and Estimation of USLE Parameters

Erosivity and Erodibility: Erosivity of Rainfall, Soil Erodibility, Relationship between Rainfall Energy and Soil Erosion

Sedimentation of Water Resources: Sediment Transport and Measurements, Mechanics of Sediment Transportation, Types of Sediments Transported Along with Streams.

Reservoir Sedimentation: Distribution of Sediments in Reservoirs, Distribution and Estimation of Reservoir Sedimentation, Factors Affecting the Sedimentation of Reservoirs, Reservoir Sedimentation Control

Grassed Waterways: Purpose of Grassed Waterways, Design of Grassed Waterways, Selection of Suitable Grasses

Construction Procedure and Maintenance, Water Harvesting, Importance of Water Harvesting, Types of Water Harvesting, Water Harvesting Technique.

 

Practical:

  1. Design of Bench Terraces for a design flood
  2. Design of a Drop Spillway
  3. Design of a Drop Inlet Spillways
  4. Design of a Chute spillway
  5. Solved problems on Modified Universal Soil Loss Equation (MUSLE)
  6. Methods of in Stream Sediment Measurements
  7. Calculation of Sediment Delivery Ratio and Trap Efficiency
  8. Design of Grassed Waterways

 

Text Book

  1. Soil and Water Conservation Engineering (Edn- 2, 3 and 4) – by Glenn O. Schwab, Richard K. Frevert, Talcott W. Edminster and Kenneth K. Barnes, John Wiley and Sons, Inc. New York.
  2. Land and Water Management Engineering – by V.V. N. Murty, Kalyana Publishers, New Delhi Ludhiana.
  3. Hydrology for Engineer – by R.K. Linsley, M.A. Kohler and J.L.H. Paulhus. McGraw Hill Book Company.
  4. Irrigation Engineering and Hydraulic Structures – by Santosh Kumar Garg. Khanna Publishers, New Delhi, India.
  5. Irrigation: Theory and Practice – by A. M. Michael, Vikas Publishing House Pvt. Ltd.

 

IWM 385 River Engineering and Basin Management 3+1

Rivers: Types of rivers and their behavior; Characteristics of rivers on alluvial plains; River survey; Rivers and their behavior in Bangladesh.

River Training and Control Works: Objective and theories of river training works; Planning and design of training works; Guide bank; Groyne; Cut-off, pavement pitching, brick revetment; Pitched island, slope grading; Vegetal cover, sheet pile, percupine and other miscellaneous works.

Flood Problems: Floods in Bangladesh; Types and causes of flood; Economic losses for floods; Estimation of flood

Flood Control Measures: Flood mitigation reservoirs; Channel improvement works; River dike or embankments; Diversion channel; Flood ways, flood plain zoning – land or watershed treatment; Spreading grounds, evacuation and insurance.

Flood forecasting and warning: Flood frequency analysis, estimation of design flood, flood simulation models. Forecasting and early warning systems

Economics of Flood Control Projects: Estimation of flood damages and control benefits; Cost-benefit analysis

Basin Concept: River basin concepts; Major issues in river basin management; Environmental and ecological aspects; Transboundary river problems: Trans boundary issues, water diplomacy, water treaties, water right, water law, conflict resolution and management.

 

Practical

  1. Investigation and problem solving on river training works (Guide bank; Groyne; Cut-off, pavement pitching)
  2. Investigation and problem solving on brick revetment; pitched island, slope grading; Vegetal cover and sheet pile
  3. Traditional river bank protection works in Bangladesh.
  4. Estimation of flood loss and design flood
  5. Investigation and problem solving on flood mitigation works
  6. Evaluation of emergency evacuation and insurance schemes for flood damage
  7. Flood forecasting and warning

 

Text Books

  1. Flood Control and Drainage Engineering– by SN Ghosh, AA Balkema and Rotterdam.
  2. River Engineering and Flood Protection– by BZ Kinori, Part I, Hand III: Elsevier Publishing Company, Amsterdam, London, New York.
  1. Principle of River Engineering– Edited by P. Th Jensen, Piman.

IWM 406 Land and Watershed Management 2+0

Introduction: Concept and objectives of watershed management, Importance of watershed management. Macro and micro watersheds characteristics and discharge models.

Landscape Grading and Forming in Watersheds: Factors influencing the design for land grading, Methods of computation of land grading, quantity surveying, and estimation of earth work volumes, Construction, and maintenance of land grading.

Sedimentation: Riverine sedimentation process and dynamic models (HEC-HMS), Factors affecting movement of sediment, Sediment measurement, Sediment yield from watersheds.

Integrated Watershed Management: Background, Strategy and conceptual teamwork, Data requirements for planning and economic analysis, Participatory processes.

Data management: Basics of temporal and spatial data; Understanding input, output, parameter and model’s internally generated data; Data pre-processing – compilation, missing values, exploratory analysis, and format; GIS treatment of spatial data – Remotely sensed digital data (elevation, land use, soil etc.) and quality check, Reclassification, Watershed delineation, and Manual digitizing of hydrographic features.

Model setup, Parameter estimation and Uncertainty: Time period selection for calibration and validation; Manual vs automatic calibration; Initial and boundary conditions; Sensitivity analysis; Model performance evaluation – subjective and objective approaches; Uncertainty issues in modelling; and Ancillary information and model results interpretation.

Hands on Training on any of the following models: HEC-RAS/HEC-HMS/MOD-WET/MODFLOW

 

Text Books

  1. Land Use and Water Resources – by H.C. Pereira, Cambridge Univ. Press. U.K.
  2. Watersheds: Processes, Assessment, and Management – Paul A Debarry, 2004, John Wiley & Sons. Inc., Hoboken, New Jersey

 

IWM 415 Pumps and Well Technology 3+1

Irrigation water lifts: Principles of lifting, Classification, selection, and characteristics of pumps,

Positive displacement pumps: types, work done by pump, power requirements, and functions of air vessel

Variable displacement pumps: classification, centrifugal pumps – types, selection, fittings, electrical connections, power requirement, operation, and maintenance.

Tube wells: types, selection, components of tube well assembly, commonly used prime movers. Verticality test, Installation of tube well accessories.

Design: Design of strainer, housing pipes, casing, and gravel packs; Objective and methods of well development

Drilling methods – their principles of operation, advantages, and limitations, Choice of drilling method.

Management: Radial wells and infiltration galleries, Tube well interference and spacing. Testing of well yield and well performance, well losses and efficiency;

Tube well failure – causes, troubleshooting and remedies; Evaluation of well performance and rehabilitation of problem wells

 

Practical

  1. Study of reciprocating and centrifugal pumps: problems and troubleshooting;
  2. Determination of efficiencies of different pumping devices;
  3. Determination of power requirements of different types of centrifugal pumps and their energy cost;
  4. Determination of characteristics curve of centrifugal pumps (single, series and parallel);
  5. Analysis of pumping test data by Theis, Jacob and Chow methods,
  6. Preparation and analysis of grain size distribution curve,
  7. Design of well screen and gravel pack,
  8. Performance evaluation of a tube well: specific capacity, efficiency and verticality,

 

Text Book

  1. Water Well and Pump Engineering- by AM Michael, SD Khepar and SK Sondhi; Tata McGraw Hill Publishing Co. Ltd. New Delhi, 1992.
  2. Water Well Technology- by M D Campbell and J H Lehr; MeGraw Hill Book Co., N.Y. 1973.

 

IWM 421 Design of Hydraulic Structures 3+1

Hydraulic structures used for irrigation: Types hydraulic structures. Classification and Advantages of different dams, Selection of site and type of dams;

Stability of Dams: Forces acting on gravity dam, Modes of failures, Stability analysis, Design of gravity dam;

Earthen Dam: Classification of earth dam with description, shearing strength of soil, pore water pressure, causes of failure, design criterion, safe design;

Seepage: Analysis, seepage discharge with isotropic soil, determination of phreatic line, failure of hydraulic structure on pervious foundation, safety against piping and uplift; Seepage control measures, Stability analysis;

Rubber Dam: Applicability of rubber dam, salient features and major technical aspects, advantages of rubber dam;

Canal head works: Site selection, constituent parts and their functions;

Weir: Description of weir, weir classification, and data required for the design, design of a vertical drop weir,

Barrage: Salient features of barrage, advantages and disadvantages between weir and barrage.;

Cross drainage works: Types with description, factors affecting design,

Aqueduct: Components of aqueduct, classification of aqueduct, design of aqueduct and siphon aqueduct;

Introduction to water conveyance structures, description of spillways, types of spillway with description, factors affecting design, dynamic forces on spillway; Introduction to energy dissipation devices, types with description, factors affecting design.

 

Practical

  1. Determination of forces on gravity dam;
  2. Stability analysis of gravity dam; Design of earth dam;
  3. Determination of phreatic lines (with filter);
  4. Determination of phreatic lines (without filter);
  5. Estimation of seepage discharge using FLOWNET;
  6. Design of sheet pile using Bligh’s and Lane’s theory;
  7. Design of weir and determination of discharge under different heads;
  8. Determination of forces on large spillways;
  9. Design of energy dissipaters.

 

Text Books

  1. Water Resources Engineering – by R.K. Linsley and J.B. Franzini, McGraw­Hill Book Company.
  2. Irrigation Engineering and Hydraulic Structures – by S.K. Garg, Khanna Publishers, Delhi, India.
  3. Design of Hydraulic Structures – by D.V. Varshney and M.V. Varshney; Khanna Publishers, Delhi, India.
  4. Introductory Irrigation Engineering – by B.C. Punmia, Standard Publishers Distributions New Delhi, India.

 

IWM 433 On-Farm Water Management 2+1

Introduction: Necessity, scope and problems of on-farm water management, Major components of a pump irrigation system

Flow Measuring Devices and Techniques: Purpose of irrigation water measurement, Techniques of measuring pump discharge and water flow in distribution system; Use of portable weirs and flumes

Water Loss in Irrigation Water Distribution System: Causes and types of water losses, methods of measuring water losses

Water management in Hotspots: Risks and uncertainty in hotspots, Irrigation and drainage management in drought-prone region, Haor region, coastal zone and hilly areas, Community based water management in hotspots

Diagnostic Analysis of Irrigated Farming System: Concept, purposes and approaches of diagnostic analysis

Socio-cultural and Economic Aspects of On-farm Water Management: Need of socio-cultural considerations, Socio-cultural factors, Social groups and farmer’s organization, Equity, equality and gender issues, Conflicts over water use, Construction and operational costs of field irrigation systems, Techniques for economic evaluation of irrigation projects, Economic optimization of crop production under irrigation

Performance Evaluation of Irrigation Project: Need and purpose of project performance evaluation, Performance indicators and factors, Fundamental approaches of project performance evaluation, Design of evaluation study

 

Practical

  1. Calibration of notches and weirs, Measurement of discharge from a pump/tubewell,
  2. Measurement of flow in an irrigation canal by – float method, rectangular notch, V-notch, cut-throat flume and current meter,
  3. Measurement of water loss in canal by – inflow-outflow method, ponding method and slope gauge;
  4. Diagnostic analysis of a water conveyance system;
  5. Field visits and report writing on problems of on-farm water management;
  6. Performance evaluation (case study) of a small irrigation project.

 

Textbooks

  1. Irrigation of Agricultural Lands – by R.M. Hagan, H.R. Haise, and T.W. Edminster, no.11 in the series Agronomy, American Society of Agronomy, Madison, Wisconsin, USA, 1967.
  2. Principles of Farm Irrigation System Design – by Larry G James, John Wiley and Sons.

 

 

IWM 439 Drainage and Reclamation Engineering 2+0

Basics of Agricultural Drainage Lesson: Introduction to Land Drainage, Objectives of Drainage, Drainage Problems in Bangladesh

Design of Surface Drainage Systems: Components of Surface Drainage System, Design Consideration for Land Grading, Land Grading Calculation, Design Consideration for Field Drains and Field Laterals, Maintenance of Surface Drainage System

Design of Subsurface Drainage Systems: Purpose and Benefits of Subsurface Drainage, Types of Subsurface Drainage Systems, Design of Pipe Drainage Systems, Computer Modeling for Drainage Design

Investigation of Drainage Design Parameters: Drainage Coefficient and Its Determination, Determination of Hydraulic Conductivity, Concept and Determination of Drainable Porosity

Subsurface Flow to Drains and Drainage Equations: Steady-State Drainage Equations, Application of Steady-State Drainage Equations, Unsteady-State Drainage Equations, Application of Unsteady-State Drainage Equations, Comparison of Steady-State and Unsteady-State Equations,

Special Drainage Situations: Drainage of Sloping Land, Inceptor Drains, Artesian Relief Wells, Drainage of Heavy Clay Soils

Construction of Pipe Drainage Systems: Materials for Pipe Drainage Systems, Drain Envelopes, Layout and Installation of Pipe Drains, Alignment and Grade,

Drainage Machinery: Backfilling, Installation of Collector Drain, Operation and Maintenance, Drainage for Salt Control Drainage of Irrigated, Humid and Coastal Regions: Problematic Soils and Salient Terminologies, Vertical Drainage and Biodrainage Systems

Salt Balance of Irrigated Land: Salinisation and Alkalisation Problems, Salt Balance of Irrigated Land Lesson, Reclamation of Saline Soils, Reclamation of Alkali Soils, Reclamation of Acid Soils

 

Textbooks

  1. Land Drainage – by Lambert K. Smedema and David W. Rycroft; BT Batsford Ltd., London.
  2. Land Drainage – by E. Farr and W. C. Henderson, Longman Handbooks in Agriculture.
  3. Soil and Water Conservation Engineering – by Glenn O. Schwab, Richard K. Frevert, Talcott W. Edminster and Kenneth K. Barnes, John Wiley & Sons, Inc.

 

IWM 453 Hydraulic Machinery 2+0

Fundamentals of hydrodynamic principles: Flow and work done over radial vane, Jet propulsion

Centrifugal Pumps: Minimum starting speed, Water pressure, Specific speed and characteristic curves, Design of a turbine pump, Cavitation and self-priming, Multi-stage pump

Reciprocating Pumps: Types, Force pump, Work done by pump, Functions of air vessel

Rotodynamic Pumps: Axial flow pumps and mixed flow pumps

Small Hydraulic Machines: Hydraulic ram, Hydraulic accumulator, Hydraulic intensifier, Rotary piston pump, Hydraulic valves, Water meters, Jet Pump, Gear pump, Air lift pump, Differential pump, Pulsometer pump and Bucket pump

 

Books Recommended

  1. Hydraulics and Fluid Mechanics – by E.H. Lewitt, 10th Edition, 1963, The English Language Book Society and Sir Issac Pitman & Sons Ltd., London, U.K.
  2. Hydraulic Machines Including Fluidics – by J. Lal, 6th Edition, 1975 (Reprinted 1979), Metropolitan Book Company Private Ltd., Booksellers & Publishers, 1-Netaji Subash Marg, New Delhi-110002, India.
  3. Fluid Mechanics – by A.K. Jain, 6th Edition, 1990, Khanna Publishers, 2-B, Nath Market, Nai Sarak, New Delhi-110006, India.