Texas Irrigator Exam Prep

A licensed irrigator must renew his/her every ______ years.

three

________, _________, and _________ are the goals of the TCEQ.

Enforcement,

Water Quality,

Waste management

Licensed ______ are responsible for obtaining permits and inspections.

irrigators

_______________ can install an irrigation system

Both

( Licensed Irrigator and Technician )

A TECHNICIAN can alter the irrigation design only when he/she ___________.

receives approval from the licensed irrigator

The "Commission" refers to _______

Texas Commission on Environmental Quality (TCEQ)

The Texas Irrigator's Advisory Council is made up of __ members

nine

The members of the Texas Irrigator's Advisory Council are appointed by _________.

the Texas Commission on Environmental Quality (TCEQ)

The Texas Irrigator's Advisory Council must have ___ representatives of the public

THREE

A minimum depth of ____ inches of pipe coverage is needed

NINE

______, _______, and ______ are functions of an irrigation system

Erosion control,

Dust reduction, Irrigation of vegetation

After a license has expired, the only way to obtain another is to __________.

go through the re-examination process again.

Even if TCEQ fails to remind you that your license is about to expire, _______

you will still lose your licence if you fail to renew.

You must be licensed or work under the supervision of a licensed individual in order to install or repair irrigation system for a living

TRUE

In order to renew an irrigator license you must pay a renewal fee and complete at least 16 hours of agency approved continuing education credits

FALSE,

at least 24 hours

If continuing education credits are not completed before the license'd renewal date, the irrigator will ______

lose their license.

A complaint can be filed over the phone if accurate records are taken

FALSE

The "Rules and Regulations for licensed Irrigators" as presented but he TCEQ states that a design of the proposed irrigation system must be provided to the home owner once the jib has been completed.

TRUE

On all installations of new irrigation systems, a licensed irrigator must present the customer a written statement of guarantees for materials and labor furnished in the installation of the system

TRUE

According to the "Rules and Regulations for Licensed Irrigators" an irrigation system MUST be designed and installed in a manner that promotes water conservation.

TRUE

Absorption Rate is also known as ______.

infiltration rate

An atmospheric Vacuum breaker id commonly referred as an ______

anti-siphon

The larger the gauge number,

Smaller the diameter of the wire

__________ ___________ is when all the heads discharge varying amounts of water, combining to produce uniform coverage

Matched Precipitation

Static Pressure - All pressure losses =

Dynamic Head Pressure

AWWA

American Water Works Association

A _______ is valve that permits water to flow in one direction only

CHECK valve

A ______ is one complete operation of a controller through all programed stations

CIRCUIT

______ pressure is the minimus pressure required for a system to operate properly

DESIGN

__________ is a type of damage occurring when water travels unrestricted through empty lateral lines

DRY LINE SHOCKED AND APPALLED

An ________ is a device which allows water to flow out slowly in a drip irrigation system

EMITTER

Emitters use _____ to measure precipitation rate

GAL PRE HOUR (GPH)

Spray heads use ___ to measure precipitation rate

GAL PER MIN (GPM)

Pressure is lost as water moves through the piping is a result of _________

FRICTION

The design pressure should not exceed ________ of the static pressure

90%

Sleeves should be at least ______ larger than the irrigation piping required

two sizes

PVC pipe with the same physical dimensions as iron pipe.

SCHEDULE PIPE

________ is the process of plant material giving off water vapor from their leaves

TRANSPIRATION

A shock wave of water created by a fast closing valve is called _______

Water Hammer

How do you denote the "Designation Code" for PVC pipe

Type# + Grade# + psi/100

([ex]

PVC pipe Type One, Grade Two, 2000 psi DP

=

1220)

The act of chemically fusing PVC pipe and fittings together is called

Solvent Welding

PVC stands for

polyvinyl chloride

The _________ is the flexible part of an automatic valve which regulates the passage of water

DIAPHRAGM

I.P.S. stands for

Iron Pipe Size

MIP stands for

Male Iron Pipe

An irrigation system with any kind of injection device associated with it would be referred as _____

Heath Hazard

A __________ back flow device is required to be used with pumps

(Which ever the state or local codes team required)

The mechanical prevention of reverse flow, or back siphonage, of non-potable water from an irrigation system into the public water system is called_______

Back Flow Prevention

Any pressure, regardless of its source, against the outlet side of the back flow prevention device, which exceeds the supply pressure against the inlet side of the device is _________

Back Pressure

_____________ is most recommended for system with fertilizer injectors

Reduced Pressure Principle

For low hazard applications, ________ is recommended

ANY BACK FLOW DEVICE

The ________________. can be installed below grade ( ground level )

Double Check Valve Assembly

_________, ___________, and ___________ can be under constant pressure

Pressure Vacuum Breaker,

Double Check Valve Assembly,

Reduced Pressure Principle

________ and _______ are acceptable back flow devices where there is a possibility of back pressure

Double Check Valve Assembly,

Reduced Pressure Principle

__________, __________, and _________ are back flow devices recommended to prevent back siphonage

Atmospheric Vacuum Breaker, Pressure Vacuum Breaker,

Double Check Valve Assembly

An atmospheric vacuum breaker is not suitable for ___________

Back Pressure

A pressure vacuum breaker, unlike the atmospheric vacuum breaker,_________

will operate satisfactory under constant pressure

Back flow in the water distribution system can be caused by ________ and _________

Back Pressure and Back Siphonage

A pressure vacuum breaker may be installed with a ___________

control valve immediately downstream

Back flow prevention assemblies on high hazard systems should be repaired ____________

when field test results show failure

A control valve downstream a back flow device may result in ________

Constant Pressure

Where are shut off valves located on an AVB?

There are no shut-off valves

A D.C.A. has ___ test cocks

FOUR

If the AVB is installed in the wrong direction, ____________

water will escape through the top portion of the device

_________________ back flow device will protect against high hazard and back pressure

Reduced Pressure Zone

An atmospheric vacuum breaker must be installed _____ inches above the highest water outlet (spray head, emitters, etc)

SIX

A reduced pressure principle device must be installed ____

twelve inches above ground level (grade)

A dual check valve is approved to protect against

NOTHING, dual check isn't a thing, Double check is

_______ determines which back flow device you install

Degree of Hazard

If water hammer is a problem, then a PVB may be used if _________

a PVB cannot protect against water hammer

_______ ______ have the highest precipitation rate

SPRAY HEADS

_______ ________ ________ would provide the highest precipitation rate for any given property

Triangular Head Spacing

Precipitation rates from most spray heads _____________

exceeds the infiltration rate in most tight soils

________ soil holds the most water

CLAY

_______, _________, and _______ affect the precipitation rate of a rotary head

Erratic Head Spacing,

Nozzle Size,

Head Pressure

With most rotary heads, if you adjust the arc down (for instance, from 360° to 180°), precipitation rate _________

INCREASES

With most rotary heads, if you adjust the arc down, the discharge rate ___________

remains the same

Rotary heads precipitate water more rapidly than other types of heads

FALSE

Irrigation heads should be selected ________

To apply water equal to or slightly below the infiltration rate of the soil.

Frequent watering will result in ______

a shallow root system

______ ________ is not ideal for dissolving surface fertilizer

Subsurface Drip

________ are essential to prevent emitters from clogging

FILTERS

It is never acceptable to run drip Lins and spray heads on the same valves,

because their precipitation rates vary

The licensed irrigator should base his/her design on __________

average nighttime wind speeds

The _____ ____ is the part of a sprinkler system that will be under constant pressure

MAIN LINE

A gate valve will have _________

Less pressure loss than a globe valve of equal size

Schedule 40 fittings can be solvent welded to:

Schedule 40 pipe,

Class Pipe,

schedule 80 pipe,

Potable water is _____

water that suitable for human consumption

the "C" valve

The lower the "C" valve, the greater the friction loss

The main design factor that affects the effectiveness of a sprinkler system is __________

PRECIPITATION RATE

Conventional spray heads discharge a spray pattern that is usually ______ in shape

CIRCULAR

__________ _________ __________ would be most affected by adverse wind

ROTARY TYPE HEADS

A well designed rotary system can be just as efficient as a well designed system with spray heads

TRUE

_________ _________ is resistant to UV light

polythylene tubing

Electric Valves are classified as

NORMALLY CLOSED

The wire to a valve should always be pulled fairly tight to prevent the wire from moving in the ditch

FALSE

Which wire is larger?

18 gauge

14 gauge

16 gauge

12 gauge

12 Gauge;

the smaller the gauge number the larger the wire

Multi-conductor wire such as 18/6 has ______

18 circuit wires and 6 common

Master valves are used to prevent velocities above 7ft/sec.

FALSE

Any connection made to a potable water supply.

cross connection