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