Modification History
Not Applicable
Unit Descriptor
Unit descriptor |
This unit covers determining hydraulic parameters for an irrigation system and defines the standard required to: calculate water volumes and pressure required to deliver water; and select system components to deliver the required rate of irrigated water. |
Application of the Unit
Application of the unit |
This unit applies to irrigation installers and designers. |
Licensing/Regulatory Information
Not Applicable
Pre-Requisites
Prerequisite units |
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Employability Skills Information
Employability skills |
This unit contains employability skills. |
Elements and Performance Criteria Pre-Content
Not Applicable
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Confirm water delivery specifications for irrigation system |
1.1. Soil characteristics are confirmed and hydraulic properties determined. 1.2. Plant/crop water requirements are gathered for various stages of growth. 1.3. Peak water requirements are determined for each area to be irrigated. |
2. Determine pressures required to deliver required amount of water over specified area |
2.1. Static pressures between water source and delivery points are determined. 2.2. Dynamic pressure necessary to achieve required water volume is calculated. |
3. Analyse technical drawings to determine pressure losses through system |
3.1. Losses resulting from fittings, laterals and elevation differences are calculated. 3.2. Losses resulting from flow through canals, culverts and pipes of varying sizes and diameters within a system are determined. 3.3. Total friction loss is calculated. 3.4. Hydraulic parameters for system are determined. |
4. Select system components to deliver water efficiently |
4.1. Water delivery components are selected to achieve the most efficient delivery rate and pressure. 4.2. Flow direction and control components are selected to be compatible with pipes and to achieve minimal friction losses. |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
This section describes the skills and knowledge required for this unit. |
Required skills |
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Required knowledge |
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Evidence Guide
EVIDENCE GUIDE |
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The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. |
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Overview of assessment |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:
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Context of and specific resources for assessment |
Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances. |
Range Statement
RANGE STATEMENT |
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The range statement relates to the unit of competency as a whole. |
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This standard covers: |
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Irrigation systems may include |
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Unit Sector(s)
Unit sector |
Irrigation |
Co-requisite units
Co-requisite units |
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Competency field
Competency field |