JNTUH B.Tech 3rd year (3-2) Irrigation and Drainage Engineering gives you detail information of Irrigation and Drainage Engineering R13 syllabus It will be help full to understand you complete curriculum of the year.
Unit —I
Introduction Irrigation Engineering, advantages of irrigation, necessity and development of irrigation’) in India and AP and classification if irrigation projects, Irrigation terminology-GCA,CCA, Base period, crop period, Delta, Duty, Relationship between Duty and Delta (Delta= (864B) / Duty cm), Introduction soil-water plant relationships, soil physical properties such as soil texture, soil structure, capillary conductivity, soil consistency-volume-mass relationships of soil constituents, Water relations of soil, kinds of soil water-Hygroscopic, Capillary and Gravitational movement of water into soils, Infiltration, factors affecting infiltration, procedure for measurement of infiltration rate and development of infiltration equations (Kostia-Kov equations-curve fitting) Ic=KT”-i-b), Soil moisture characteristic curves, difference between soil moisture stress and soil moisture tension, soil moisture constants such as saturation capacity, field capacity moisture equivalent and permanent wilting point.
Terminology related with movement of water within soils-water intake, percolation, inter flow, seepage, permeability, hydraulic conductivity and hydraulic gradient- Measurement soil moisture by different methods, Evaporation, transpiration and evapo-transpiration-Estimation by Blaney-Griddle Thornthwaite, penman and modified Penman equations only-Potential ET.
Unit-II
Water requirements of crops-Importance of water in plant growth, procedures of working out the net irrigation requirement (depth of irrigation) gross irrigation requirement, irrigation frequency and Irrigation efficiency (conveyance, application, storage, distribution, water use efficiency) with few numerical examples, Water application methods-classification, border irrigation, components of border irrigation-Width, Length and Slope for different soils for different soils. Hydraulics of border irrigation(Advance curve, Recession Curve and Opportunity time through Time and Distance Curve) design of border irrigation.
Derivation of israelson’s equation for the width of the border (X= (QNV.1) (1-eity), Furrow irrigation system-advantages and disadvantages, determination of infiltration depth in furrows by infiow-outflow method (Steam size, Distance Advance time, CS area and Wetted Perimeter data problem on computation of infiltration depth), Check basin irrigation— advantages and disadvantages, estimation of infiltration under check basin conditions, adaptability and design considerations.
Unit – III
Methods of conveyance of irrigation water-assessment of design capacity of irrigation channels. Design of irrigation canals using Lacey’s and Kennedy’s theories and problems, Measurement of irrigation water-units of measurements, methods of measurement, direct and indirect methods, measurement of velocity using current meter-indirect methods such as area velocity method and coordinate method for measuring discharges form pipes- dethridge meter, tracer method, Direct methods of measurement of discharges-different devices such as weirs flumes and notches and their installation procedures — Equations for Rectangular Triangular and Trapezoidal notches, Explanation on RBC flumes (critical flow flumes) Underground pipe lines for irrigation water distribution-types of pipes used for underground pipe lines, testing of pipes for its water absorption and pressure requirements, estimating the discharge capacity of pipe lines, Installation procedures of underground pipe lines and study of different structures associated with underground pipe lines.
Drainage-definition, objective and types, familiarization with the drainage problems (twin problems of water logging and salinity) and extent of areas in Irrigated areas in the state, Surface drainage, effects of poor drainage, areas requiring drainage, factors affecting drainage requirement, drainage coefficient, determination of drainage coefficient based on different criteria, Types of surface drainage-random field drain system, bedding system, parallel field drain, parallel lateral open ditch, cross slope drain system Interception system, design of open drainage channels using Manning’s equation and alignment of open ditches (radius of curvature), Investigations on design parameters, hydraulic conductivity, drain able porosity fluctuations of depts.
To water table in the areas, methods of determining hydraulic conductivity-single auger hole method and derivation of Hooghoudt’s equation for ‘K’ with assumptions and inverse auger hole, Sub-surface drainage systems purpose and benefits, types of sub surface systems tile drains, mole drains, drainage wells, deep open drains and combinations and their suitability for different conditions and limitations.Components of Sub-surface drainage system Layouts and types —Random type herring bone, grid iron cutoff or interceptor drains, depth and spacing of drains, size of the pipe drains using Manning’s equation, drain materials of burnt clay. Perforated corrugated and solid PVC and cement concrete, slope/grade for the drains, Envelope materials for sub-surface drains and selection criteria for uniform soils and graded soils, geo-textile and nylon mesh, outlets for sub surface drainage, gravity, gravity and pumped outlets.
TEXT BOOKS
- Irrigation Engineering, Muzumdar S K, 1983, Tat-McGraw Hill Publishing’s. Co. Ltd., New Delhi.
- Irrigation Theory & Practice, Michael A M, 2008, Vikas Publishing House, New Delhi.
- Drainage Engineering, Luthin J M, .187,D, Wiley Eastern Ltd., New Delhi
- Soil and Water Conservation Engineering, Schwab G 0, Frevert R K.
- Edminister T w and Berner K K, 1981, John-Wiley and Sons, New Delhi.
REFERENCE
- Land & Water management Engineering. Murthy V V N, 2004, Kalyani Publishers, New Delhi.
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