Texas Irrigator License Study Guide
2025/2026 Exam Questions and Verified
Answers | Already Graded A+
Absorption Rate/ Infiltration Rate - 🧠ANSWER ✔✔The rate (or speed) at
which soil will accept water.
Actual Head Pressure - 🧠ANSWER ✔✔The operating pressure measured
at the base of a sprinkler head. It must be equal to or greater than minimum
head pressure to function correctly.
Formula: Static Pressure-Total Pressure Loss
Air Relief Valve - 🧠ANSWER ✔✔Small device used on some drip irrigation
that allows air into the dripline when the system is not running which
, eliminates any vacuum that could result in debris or contaminants being
sucking into the line.
Application Rate/Precipitation Rate - 🧠ANSWER ✔✔Rate at which water is
applied by sprinkler heads in a certain pattern. Measure in inches per
hours, gallons per hours, or gallons per day.
Formula: 96.3 X Total GPM/ Total Area
Water Audit - 🧠ANSWER ✔✔The most accurate method to evaluate
precipitation rates. You will collect water using catchment devices.
Arc - 🧠ANSWER ✔✔The surface area of the landscape to which a sprinkler
head will provide water. Described in degrees or part of a full circle (360
degrees).
Example: a 90 degree arc would be a quarter circle head, a 180 degree arc
would be a half circle head, a 360 degree arc would be a full circle head.
As-Built Plan - 🧠ANSWER ✔✔A corrected or redrawn plan showing the
"actual scaled" location of all major components of the system and other
2025/2026 Exam Questions and Verified
Answers | Already Graded A+
Absorption Rate/ Infiltration Rate - 🧠ANSWER ✔✔The rate (or speed) at
which soil will accept water.
Actual Head Pressure - 🧠ANSWER ✔✔The operating pressure measured
at the base of a sprinkler head. It must be equal to or greater than minimum
head pressure to function correctly.
Formula: Static Pressure-Total Pressure Loss
Air Relief Valve - 🧠ANSWER ✔✔Small device used on some drip irrigation
that allows air into the dripline when the system is not running which
, eliminates any vacuum that could result in debris or contaminants being
sucking into the line.
Application Rate/Precipitation Rate - 🧠ANSWER ✔✔Rate at which water is
applied by sprinkler heads in a certain pattern. Measure in inches per
hours, gallons per hours, or gallons per day.
Formula: 96.3 X Total GPM/ Total Area
Water Audit - 🧠ANSWER ✔✔The most accurate method to evaluate
precipitation rates. You will collect water using catchment devices.
Arc - 🧠ANSWER ✔✔The surface area of the landscape to which a sprinkler
head will provide water. Described in degrees or part of a full circle (360
degrees).
Example: a 90 degree arc would be a quarter circle head, a 180 degree arc
would be a half circle head, a 360 degree arc would be a full circle head.
As-Built Plan - 🧠ANSWER ✔✔A corrected or redrawn plan showing the
"actual scaled" location of all major components of the system and other
