VIP Exclusive
IA Certified Irrigation Designer (CID) VIP Practice Exam
IA — This exam mirrors the Irrigation Association (IA) Certified Irrigation Designer (CID) certification exam, administered by the Irrigation Association; the real exam consists of approximately 100 multiple-choice questions with a 3-hour time limit and a 70% passing score, covering hydraulics, system design, water management, soils, controllers, and irrigation efficiency.
30
Questions
90m
Time Limit
70.00%
To Pass
Question 1 of 30👑 VIP
A designer is sizing a lateral pipe that must deliver 12 GPM to a zone of rotary heads. The lateral runs 120 feet from the zone valve to the last head. Using a velocity limit of 5 ft/sec, which pipe size should be selected, and approximately what friction loss (PSI) should the designer expect across the full lateral using the Hazen-Williams equation with a C-factor of 150 for Schedule 40 PVC?
Questions 2–30 and full explanations are VIP-exclusive.