Classes > Designer/Manager

Designer/Manager School of Irrigation


At ITRC, safety comes first. We are monitoring guidelines for COVID-19 and will announce future schedules as soon as we are able.


The Designer/Manager School is a comprehensive educational program offering a variety of classes designed for both agricultural and landscape irrigation professionals, taught by the very people who developed them - Charles M. Burt (Ph.D., P.E., CID); Stuart Styles (D.Engr., P.E., CID); Franklin Gaudi (Ed.D., CID, CAIS), and Dan Howes (Ph.D., P.E.). The classes are held at the ITRC facilities at Cal Poly State University, San Luis Obispo. Our objective is to offer you an excellent opportunity to receive practical information on key irrigation design and management concepts, increase your competitive edge by learning what is essential versus interesting, work with state-of-the-art management software, gain "hands-on" technical experience with exceptional indoor and outdoor facilities, and experience a comprehensive, intensive course structure that substantially improves technical expertise.


Click the links to find out about:


Classes Offered

Agriculture Courses

All fees include class materials and software.

Basic Soil, Plant, & Water Relationships     TBD

Soil texture and structure, water holding capacity, retention, intake rates, evaporation, transpiration, soil classification, measurement of soil moisture and tension

Irrigation Scheduling, Salinity, & Drainage    TBD

(Suggested prerequisite: Basic Soil, Plant & Water Relationships)
ETo and crop coefficients, practical irrigation scheduling, how efficiency and uniformity influence scheduling, drainage concepts and layouts, salinity, leaching reqeuirements, reclamation.

Fertigation    TBD

The class will cover new techniques in the control and application of fertilizers through irrigation systems and strategies to conform with the intent of the new nitrogen regulations in California. Other topics will include nitrogen fertilizers, challenges with phosphorus and potassium applications, growth enhancers, and organic-compliant ways to keep drip systems clean. Increasing yields per acre-foot of evapotranspiration (ET) through better fertility management, will also be discussed.

Row Crop Drip Irrigation     TBD

Design layouts, flushing, fittings, how design relates to management, hose installation, retrieval

Drip/Micro Irrigation Design     TBD

(Suggested prerequisites: Basic Soil, Plant, & Water Relationships, Basic Hydraulics I & II, Pumps I)
Topics will include: filtration, step-by-step design procedure of hardware selection and hyraulics, drip/micro system design, SDI for trees and vines, plugging prevention. Features ITRC book Drip and Micro Irrigation for Trees, Vines, and Field Crops (4th Ed.) and software, Drip Hydraulics.

Sprinkler, Border Strip, and Furrow Irrigation     TBD

Topics will include: the unique aspects of proper irrigation timing with these irrigation methods; how to control the amount of water that infiltrates; reducing losses; tailwater return systems; pressures, sprinkler types, and spacings for sprinklers; how to get a uniform irrigation with all the methods; modifying infiltration rates; common possibilities for improving efficiencies (along with their limitations).

Drip System Troubleshooting     TBD

Drip system troubleshooting

Drip System Specifications     TBD

Drip system specifications


Agriculture/Landscape Courses

All fees include class materials and software.

Basic Pipeline Hydraulics I     TBD

Pipe material & sizes, energy equation, friction, elevation changes, and basic spreadsheet operations.

Basic Pipeline Hydraulics II     TBD

Mainline computations, tapered pipe, branches, hydraulic grade lines, problems using spreadsheets, minor losses.

Pumps I (Summer)    TBD

Types of rotating pumps, pump terms, pump curves, pumps in series and parallel, system curves, TDH computations for vertical and booster pumps, efficiency, WHP, BHP, input HP, pump selection from catalogs, trimming impellers, answers to common pump questions.  This class is also offered every summer as part of our Irrigation District School of Irrigation series.  Click here for more information.

Pumps II (Summer)     TBD

This class is sponsored by the USBR, Mid-Pacific Region (Suggested preprequisites: Basic Pipeline Hydraulics I & II, Pumps I)
Net positive suction head, submersible pumps, well screens, shaft losses, shaft sizing, maintenance and troubleshooting, variable frequency drive (VFD) basics, retrofitting VFDs on existing motors, affinity laws for variable speed operation, how to estimate savings from VFDs, hands-on VFD application, power factor correction, inlet and sump design.  This class is also offered every summer as part of our Irrigation District School of Irrigation series.  Click here for more information.

Landscape Sprinkler Design     TBD

Hybrid course covers irrigation system components, soil/plant/water relationships, distribution uniformity, application rates, sprinkler placement & selection, and irrigation scheduling. Online portion will cover necessary prerequisites in preparation of a 2-day design example in class. The 2-day class at Cal Poly is optional.

Landscape Irrigation Auditor     TBD

(Suggested prerequisites: Basic Soil, Plant, & Water Relationships, Basic Pipeline Hydraulics I & II)
Steps performed in an audit to determine distribution uniformity (DU) including site inspection and tune-up, system test, calculating system performance and using performance values to schedule irrigations. An irrigation audit will be conducted in class.




How to Register

There are several ways to register: You can register online here or you can download and print this registration form, which contains instructions for mailing, faxing, or phoning in your registration. (Note: Links are currently disabled)

Cancellation Policy

When cancelling one or more classes, a refund will be given only if the cancellation is made 10 business days prior to the date of the first class registered for. Call ITRC at (805) 756-2434.


Class Details

All classes are a full day (8:00 AM - 4:30 PM) unless otherwise noted. Please bring your laptop. Many of the classes have a software component. It will be an advantage for you to bring in your laptop computer to the clases so you can try the software during the training.


IA Certification Exams

You must complete the application and registration form before selecting an exam date. Contact the Irrigation Association by phone (703-536-7080) or by email ( Paper copies of the IA exams are availabe during Designer/Manager courses. For more information about the IA's certification programs, please visit the IA website.


Online Landscape Irrigation Classes

ITRC has partnered with the Irrigation Association to offer nine online "modules" for CEU credit that cover the basics of Landscape Sprinkler System Design and Landscape System Auditing. Registration is available through the Irrigation Association. For descriptions of the available modules and registration links, please visit our Online Landscape Irrigation page.


Directions & Housing Info

ITRC is located on the campus of Cal Poly State University in San Luis Obispo, California. You can find campus maps here, and download printable driving directions and parking information for ITRC. Short course participants are responsible for their own meals and accommodations. For more information about lodging, dining, or activities in and around San Luis Obispo, click here.