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Rain Bird Factory Trained
Drainage Technician

Class Code 1504 - 8 hours

This course is designed for any irrigation professional ready to learn about the basics and beyond of landscape drainage systems. Participants in this course will be presented with the common indicators and causes of drainage problems on a site and the products available to correct the issue. Learn to use industry standard tools for setting proper grade and slope for gravity fed drainage.  

Course Objectives

Upon completion of this course, students will be able to:

  1. Identify common drainage system components
  2. Identify site soil conditions
  3. Utilize industry standard tools to measure slope and set proper grade
  4. Design drainage systems
  5. Install drainage systems
  6. Manage and maintain drainage systems

Course Outline

  1. Determining if drainage problems exist
    1. Indicators of a drainage problem
      1. Standing water (typically 24 hours or more after rainfall or irrigation)
      2. Water stains on buildings, fences, or other hardscape surfaces
      3. Fungus or weed growth (dollar weed prefers a wet soil)
      4. Poor plant health
      5. Debris accumulation (leaves, mulch, mud, etc…)
      6. Foul odor
    2. Common causes of drainage problems (water source)
      1. Surface Issues
        1. Improper grading or other natural obstacles
        2. Plant root systems
        3. Hardscape items (Driveways, sidewalks, landscape timbers or edging material)
      2. Subsurface Issues
        1. Poor soil conditions
        2. Inefficient irrigation system components
        3. Buried structures (pool, septic tank, etc…)
        4. Neighboring properties
    3. Type of problem present
      1. Nuisance
      2. Minor potential for damage
      3. Imminent damage
  2. Soils and their effect on drainage conditions
    1. Soil & water relationship
      1. Available Water
        1. Absorption vs. Capillary Storage
        2. Field Capacity to Permanent Wilting Point
      2. Adhesion & Cohesion
      3. Infiltration rate and percolation rate
    2. Soil texture & Structure
      1. Sand, Silt, Clay content
      2. Granular, Blocky, Prismatic, Columnar, Platy, Single Grained arrangement
      3. Soil Testing
      4. Compaction
        1. Causes
        2. Correction
  3. Grading and slope
    1. Tools
    2. Procedures
      1. Measuring slope and grade
      2. Setting grade stakes
  4. Grading and Drainage plans
  5. Drainage System Components
    1. Grates and Basins
    2. Basin adapters
    3. Pop-up valves
    4. Pipe
  6. Drainage system design basics
  7. Installation Methods

 

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