Texas Irrigation Technician Exam
questions and answers
Who composes the Irrigator Council? - ANSWER>>6 Irrigators, 3 Public members,
all from the same state
What is the purpose of the Irrigator Council? - ANSWER>>Provide advice on
matters concerning irrigation
Possible consequence of installing a system w/o a license? - ANSWER>>Being
charged with a Class C misdemeanor
Absorption Rate - ANSWER>>How fast a rate at which the soil will accept water
Actual Head Pressure - ANSWER>>The operating pressure measured at the base
of a sprinkler head
How to CALCULATE Actual head pressure? - ANSWER>>subtract all pressure losses
from static pressure
air gap - ANSWER>>A complete physical separation between the free flowing
discharge end of a potable water supply pipeline and an open or non-pressure
recieveing vessel
Application Rate - ANSWER>>Rate that a head applies water to the area it's
spraying
What term is Application rate synonymous with? - ANSWER>>Precipitation Rate
Arc - ANSWER>>The surface area of the landscape that the head will provide
water (half, full, 90, 25)
, as-built plans - ANSWER>>A corrected or redrawn plan, showing location of all
major components of a system
A.W.W.A. - ANSWER>>American Water Works Association
Backflow - ANSWER>>The UNDESIREABLE reverse flow of water in a piping system
Back pressure - ANSWER>>Condition that can happen due to elevation pumps,
pressure
Back siphonage - ANSWER>>backflow due to a sub atomic pressure (break in city
main, fire hydrant being used
Backflow prevention - ANSWER>>A mechanical means to prevent a backflow
A backflow device - ANSWER>>Any approved device that prevents an
undesireable reversal of flow of water
1 column foot of water - ANSWER>>.443 psi (pretty close to 5 ft.
1 psi - ANSWER>>requires a column of water 2.31 feet tall (or 3 ft.) (or 27.75 in.)
max flowrate for 1/2 in pipe (to stay below 5 fps) - ANSWER>>5 gpm
max flowrate for 3/4 in pipe (to stay below 5 fps) - ANSWER>>10 gpm
max flowrate for 1 in pipe (to stay below 5 fps) - ANSWER>>15 gpm
max flowrate 1 1/4 in. pipe (to stay below 5 fps) - ANSWER>>25 gpm
max flowrate for 1 1/2 in pipe (to stay below 5 fps) - ANSWER>>35 gpm
Key requirement for RPZ backflow - ANSWER>>minimum of 12" above grade
questions and answers
Who composes the Irrigator Council? - ANSWER>>6 Irrigators, 3 Public members,
all from the same state
What is the purpose of the Irrigator Council? - ANSWER>>Provide advice on
matters concerning irrigation
Possible consequence of installing a system w/o a license? - ANSWER>>Being
charged with a Class C misdemeanor
Absorption Rate - ANSWER>>How fast a rate at which the soil will accept water
Actual Head Pressure - ANSWER>>The operating pressure measured at the base
of a sprinkler head
How to CALCULATE Actual head pressure? - ANSWER>>subtract all pressure losses
from static pressure
air gap - ANSWER>>A complete physical separation between the free flowing
discharge end of a potable water supply pipeline and an open or non-pressure
recieveing vessel
Application Rate - ANSWER>>Rate that a head applies water to the area it's
spraying
What term is Application rate synonymous with? - ANSWER>>Precipitation Rate
Arc - ANSWER>>The surface area of the landscape that the head will provide
water (half, full, 90, 25)
, as-built plans - ANSWER>>A corrected or redrawn plan, showing location of all
major components of a system
A.W.W.A. - ANSWER>>American Water Works Association
Backflow - ANSWER>>The UNDESIREABLE reverse flow of water in a piping system
Back pressure - ANSWER>>Condition that can happen due to elevation pumps,
pressure
Back siphonage - ANSWER>>backflow due to a sub atomic pressure (break in city
main, fire hydrant being used
Backflow prevention - ANSWER>>A mechanical means to prevent a backflow
A backflow device - ANSWER>>Any approved device that prevents an
undesireable reversal of flow of water
1 column foot of water - ANSWER>>.443 psi (pretty close to 5 ft.
1 psi - ANSWER>>requires a column of water 2.31 feet tall (or 3 ft.) (or 27.75 in.)
max flowrate for 1/2 in pipe (to stay below 5 fps) - ANSWER>>5 gpm
max flowrate for 3/4 in pipe (to stay below 5 fps) - ANSWER>>10 gpm
max flowrate for 1 in pipe (to stay below 5 fps) - ANSWER>>15 gpm
max flowrate 1 1/4 in. pipe (to stay below 5 fps) - ANSWER>>25 gpm
max flowrate for 1 1/2 in pipe (to stay below 5 fps) - ANSWER>>35 gpm
Key requirement for RPZ backflow - ANSWER>>minimum of 12" above grade
