AI8501 Irrigation and drainage engineering

                                                      


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Important questions 
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AI8501 Irrigation and drainage engineering

Unit 1
UNIT -1 
1. Development and Utilization in India and Tamil Nadu
2. Irrigation requirement ,frequency,efficiencies.**
3.duty and delta-Rooting characteristics
Unit 2 
1. Underground pipeline irrigation system
2. Kennedy" s and Lacey" s theories,**
3. Drip and Sprinkler**
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Unit 3

1. Weirs and Barrage-Types of impounding structures
2. Factors affecting, location of dams -Forces on a dam••
3. Earth dams, Arch dams
Unit 4
1. Design of irrigation canals,Regime theories,Head works,Canal regulators,Cross drainage works Canal Outlet**
Or 
2. On Farm Development works, Farmer" committee - its role for water distribution and system operation***
Unit 5 
1. Darcy's law infiltration theory, Surface drainage systems
2. Leaching requirements irrigation and drainage water quality - recycling of drainage water for irrigation

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**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }
mostly asked from unit 2, 5(OR) a situation given and you have to answer on your own

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SYllabuS
UNIT I
WATER RESOURCES AND IRRIGATION REQUIREMENT
Water Resources- River basins-Development and Utilization in India and Tamil Nadu-Imigation - duty and delta-Rooting characteristics - Moisture use of crop, Evapotranspiration - ET plot-Crop water requirement - Effective rainfall - Scheduling - Irrigation requirement - Imigation frequency. Irrigation efficiencies.
UNIT II METHODS OF IRRIGATION
Methods of Irrigation - Surface and Subsurface methods - Drip and Sprinkler - Hydraulics and design-Erodible and non-erodible, Kennedy" s and Lacey" s theories, Materials for lining water courses and field channel, Water control and diversion structure - Underground pipeline irrigation system
UNIT III
DIVERSION AND IMPOUNDING STRUCTURES
Head works -Weirs and Barrage-Types of impounding structures - Factors affecting, location of dams -Forces on a dam -Design of Gravity dams- Earth dams, Arch dams - Spillways -Energy dissipaters
UNIT IV CANAL IRRIGATION AND COMMAND AREA DEVELOPMENT
Classification of canals- Alignment of canals - Design of irrigation canals- Regime theories Canal Head works- Canal regulators Canal drops - Cross drainage works Canal Outlet, Escapes -Lining and maintenance of canals Excess irrigation and waterlogging problem - Command area Concept, Components of CADP- On Farm Development works, Farmer" committee - its role for water distribution and system operation-rotational irrigation system.
UNIT V AGRICULTURAL DRAINAGE
Agricultural drainage Drainage coefficient, principles of flow through soils. Darcy's law infiltration theory, Surface drainage systems Subsurface drainage Design of subsurface drainage - Pipe materials mole drains, drainage wells. Leaching requirements irrigation and drainage water quality - recycling of drainage water for irrigation.

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