TEXAS LANDSCAPE
IRRIGATION EXAM STUDY
GUIDE. GRADED A+.
QUESTIONS AND 100%
VERIFIED ANSWERS. LATEST
2025/2026 UPDATE
Pressure compensating devices help save water because they? - Ans✔✔-Help
eliminate misting or fogging at the sprinkler heads
Landscape Irrigation - Ans✔✔-The art and management of applying water to
landscape in a manner to encourage growth of plant material and support
water conservation
Irrigation sensors - Ans✔✔-(Measure rain, wind, soil moisture, and freeze) that
save water and eliminate liability issues concerning ice related accidents during
freeing weather
Pressure Regulation Device - Ans✔✔-Devices which eliminate misting or
fogging at the sprinkler heads, thus achieving better uniformity and saving
water
,Hydrozoning - Ans✔✔-The practice of zoning an irrigation system based on
similar plant material with similar watering reguirements due to environmental
and or geographic influences including, but not limited to, soil type, slope, site
orientation, and solar radiation
Licensed landscape irrigators - Ans✔✔-Responsibility to educate, promote,
support and practice water conservation in the landscape irrigation industry in
order to preserve one of out most precious resources on earth
Absorption Rate - Ans✔✔-The speed at which water can penetrate or infiltrate
the soil
Actual Head Pressure - Ans✔✔-The operating pressure measured at the base of
a sprinkler head.
Actual head pressure formula - Ans✔✔-(Static pressure) - (Total pressure lost) =
Actual head pressure
air gap - Ans✔✔-an approved Air gap is the unobstructed vertical distance
through free atmosphere between the lowest point of a water supply outlet
and the flood level rim of the fixture or assembly into which the outlet
discharges. Physical seperation must be at least twice the diameter of the
water supply outlet but never less than 1"
Most common air gap? - Ans✔✔-Kitchen sink
, Application Rate (Precipitation rate) - Ans✔✔-Rate at which water is applied by
sprinkler heads in a certain pattern.
For irrigation contractors, water conservation starts with? - Ans✔✔-A great
design
Three methods to evaluate application rate - Ans✔✔-Densogram, Precipitation
rate formulas, Water audit
The proper watering time is early morning because? - Ans✔✔-Sprinkler
patterns are generally less distorted from the wind
arc - Ans✔✔-Degrees of coverage of a sprinkler from one side of a pattern to
the other
The art and management of applying water to the landscape to encourage the
growth of plant material and support water conservation is? - Ans✔✔-
Landscape Irrigation
Atmospheric Vacuum Breaker (AVB) - Ans✔✔-Backflow prevention device that
allows air into the piping system, with the use of a float that moves up and
down, to prevent backsiphonage.
Cannot be under constant pressure for more than 12 hours in one 24 hour
window.
A minimum of 6" higher than all down stream piping.
A separate AVB must be installed on the discharge side of each control valve,
between the valve and all emission devices.
IRRIGATION EXAM STUDY
GUIDE. GRADED A+.
QUESTIONS AND 100%
VERIFIED ANSWERS. LATEST
2025/2026 UPDATE
Pressure compensating devices help save water because they? - Ans✔✔-Help
eliminate misting or fogging at the sprinkler heads
Landscape Irrigation - Ans✔✔-The art and management of applying water to
landscape in a manner to encourage growth of plant material and support
water conservation
Irrigation sensors - Ans✔✔-(Measure rain, wind, soil moisture, and freeze) that
save water and eliminate liability issues concerning ice related accidents during
freeing weather
Pressure Regulation Device - Ans✔✔-Devices which eliminate misting or
fogging at the sprinkler heads, thus achieving better uniformity and saving
water
,Hydrozoning - Ans✔✔-The practice of zoning an irrigation system based on
similar plant material with similar watering reguirements due to environmental
and or geographic influences including, but not limited to, soil type, slope, site
orientation, and solar radiation
Licensed landscape irrigators - Ans✔✔-Responsibility to educate, promote,
support and practice water conservation in the landscape irrigation industry in
order to preserve one of out most precious resources on earth
Absorption Rate - Ans✔✔-The speed at which water can penetrate or infiltrate
the soil
Actual Head Pressure - Ans✔✔-The operating pressure measured at the base of
a sprinkler head.
Actual head pressure formula - Ans✔✔-(Static pressure) - (Total pressure lost) =
Actual head pressure
air gap - Ans✔✔-an approved Air gap is the unobstructed vertical distance
through free atmosphere between the lowest point of a water supply outlet
and the flood level rim of the fixture or assembly into which the outlet
discharges. Physical seperation must be at least twice the diameter of the
water supply outlet but never less than 1"
Most common air gap? - Ans✔✔-Kitchen sink
, Application Rate (Precipitation rate) - Ans✔✔-Rate at which water is applied by
sprinkler heads in a certain pattern.
For irrigation contractors, water conservation starts with? - Ans✔✔-A great
design
Three methods to evaluate application rate - Ans✔✔-Densogram, Precipitation
rate formulas, Water audit
The proper watering time is early morning because? - Ans✔✔-Sprinkler
patterns are generally less distorted from the wind
arc - Ans✔✔-Degrees of coverage of a sprinkler from one side of a pattern to
the other
The art and management of applying water to the landscape to encourage the
growth of plant material and support water conservation is? - Ans✔✔-
Landscape Irrigation
Atmospheric Vacuum Breaker (AVB) - Ans✔✔-Backflow prevention device that
allows air into the piping system, with the use of a float that moves up and
down, to prevent backsiphonage.
Cannot be under constant pressure for more than 12 hours in one 24 hour
window.
A minimum of 6" higher than all down stream piping.
A separate AVB must be installed on the discharge side of each control valve,
between the valve and all emission devices.
