presented by- assistant executive engineer, water resources department government of maharashtra. 15...
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Presented by-
Assistant Executive Engineer,
Water Resources Department
Government of Maharashtra.
15th Induction Training: WALMI A’bad.
29 April 2008
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PREPARATION OF EXCEL WORKSHEETS
Er. Pravin Kolhe
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Worksheets for- Computation of BCR according to CWC
Guidelines. Preliminary Irrigation Programme. Design of Drip & Sprinkler Irrigation
System. Land leveling. Rate of Infilteration
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CONTENT
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Feasibility tests: Engineering/Technical
feasibility Economic feasibility Financial feasibility Social feasibility Political feasibility Environmental
feasibility
Discounted Cash Flow Techniques: Benefit-Cost Ratio
(BCR) Method Net Present Worth
method Internal Rate of
Return (IRR) Method
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1. COMPUTATION OF BCR ACCORDING
TO CWC GUIDELINES
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BCR continue… Compounding:
It is the process by which future values of the present payments can be determined with certain interest rate.
Discounting:It is the process by which future payments can be converted to present by a discount rate.
Worksheet for BCR computation
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Worksheet for PIP
2. PRELIMINARY IRRIGATION PROGRAMME.
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Design of Sprinkler Irrigation Method
Design of Drip Irrigation Method
3. DESIGN OF DRIP & SPRINKLER IRRIGATION
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Objective Better Aeration Efficient Water
Application Better drainage,
without erosion.
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What is Land Forming: Process of
providing planned grade for better aeration and efficient water application on farm.
4. LAND FORMING
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Land Forming Techniques
1 •Land Smoothening
2 •Land Grading
3 •Land Leveling
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Land Smoothening: Process of forming uniform slope in the direction of irrigation without changing the natural land slope.
Land Grading: Process of developing desired land slope in the direction of irrigation by changing natural land slope
Land Leveling: It is the process of giving zero slope in the direction of irrigation and as well as in cross direction.
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Land Leveling This technique is
mainly used for basin irrigation where low land paddy is grown and field-to-field irrigation is practiced.
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Worksheet for Land Leveling
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Infilteration: It is the downward entry of water into the soil.
Infiltration rate (Ir): The actual rate at which the water enters the soil under specified conditions
Cumulative Infiltration (Y): It is the quantity of water that enters the soil in a given time
Measurement of Infilteration:
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1 •Concentric Cylinder Infiltrometer
2 •Basin Ponding Test.
3 •Blocked Furrow Infiltrometer
5. RATE OF INFILTERATION
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Concentric Cylinder Infiltrometer
Worksheet for Rate of Infilteration
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DOWNLOAD THESE WORKSHEETS FROM…
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Thank You…!
© Pravin Kolhe, 2008 http://www.pravinkolhe.com/
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