TEXAS IRRIGATION LICENSE EXAM 2024 ACTUAL EXAM COMPLETE 100 QUESTIONS WITH DETAILED VERIFI, Exams of Physics

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TEXAS IRRIGATION LICENSE EXAM 2024 ACTUAL

EXAM COMPLETE 100 QUESTIONS WITH

DETAILED VERIFIED ANSWERS (100% CORRECT

ANSWERS) / ALREADY GRADED A+

Absorption Rate/ Infiltration Rate - ANSWERThe rate (or speed) at which soil will accept water. Actual Head Pressure - ANSWERThe 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 - ANSWERSmall 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 - ANSWERRate 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 - ANSWERThe most accurate method to evaluate precipitation rates. You will collect water using catchment devices. Arc - ANSWERThe 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 - ANSWERA corrected or redrawn plan showing the "actual scaled" location of all major components of the system and other information the property owner might require. Zone valves are the most important component to locate. Atmospheric Vacuum Breaker - ANSWERA backflow prevention device that allows air into the piping system, with the use of a float that moves up and down, to prevent

backsiphonage. This is no longer allowed in Texas. Backflow - ANSWERAn unwanted reversal of the flow of water in a piping system which can potentially allow non-potable water to pollute or contaminate the potable water supply. Backpressure - ANSWERAny condition that could create pressure in the discharge side of the piping system that is greater than that of the supply side of the system. This can because by gravity (due to elevation) or a pump. Backsiphonage - ANSWERA form of backflow due to negative or sub-atmospheric pressure within the water system. Caused by a city main like break, or the fire department using water nearby for a fire. Backflow Prevention Methods - ANSWER1. Air Gap

2. Atmospheric Vacuum Breaker (Not allowed in Texas)
3. Pressure Vacuum Breaker
4. Spill Resistant Pressure Vacuum Breaker
5. Double Check Valve Assembly
6. Reduced Pressure Principle Assembly Check Valve - ANSWERA valve which permits water to flow in one direction only. These devices are usually located within the sprinkler head for the purpose of preventing water in the piping to drain out of the sprinkler heads when the system is off. Class Pipe - ANSWERPVC pipe is groups according to the working pressure. All sizes within a class have the same working pressure. Controller - ANSWERAn automatic timing device, which signals the automatic valves to open or close according to the prescribed program. Design Pressure - ANSWERThe sum total of the desired head pressure added to the total of all pressure losses. Formula: Minimum Head Pressure + Total Pressure Losses Distribution Uniformity - ANSWERThe uniformity of the distribution of water over a given irrigated area. It is calculated using a catchment test. Divide the average reading of the driest 25% of catch cans by the average reading of all the catchments, and then multiply by 100. Closer to 100% is better.

Double Check Valve Assembly - ANSWERBackflow prevention assembly, using two shut-off valves and to check valves assembled and pre-tested at the factory, designed to physically block or prevent backflow. Drip Irrigation - ANSWERThe slow application of water to the specific root zone of the plant material using very low pressure. Expressed in gallons per hour. Dry Line Shock - ANSWERThe shock which occurs when a valve is opened and the water travels unrestricted in empty piping. This happens when the water is turned on too fast and the air can damage the pipes. Dynamic Water - ANSWERWater that is in motion through the system as known as working pressure. Electrolysis - ANSWERThe chemical reaction when two dissimilar metals are connected. This reaction results in the deterioration of the piping. Emitters - ANSWERA small mechanical device used in drip irrigation to limit water flow to a drip or slow trickle. Evapotranspiration - ANSWERThe combination of water that has evaporated from the soil and transpired from the plant material. This is the measurement of total amount of water needed for plants to grow. FPS - ANSWERFeet per second Friction Loss - ANSWERPressure loss due to friction as water flows through all components of a system. The rougher the inside of the pipe or component, the more friction loss is encountered. Gauge (in reference to wire sizing) - ANSWERStandards used for wire sizing. The larger the gauge number, the smaller the wire diameter. GPH - ANSWERGallons Per Hour GPM - ANSWERGallons Per Minute Degree of Hazard - ANSWERa measure of the degree of risk or harm to the public's health. Possible hazards are on site sewage & fertilizer injectors. Head to Head Spacing - ANSWERSpacing of heads that is equal to the published radius of the head. Equal to 50% of the diameter of the head.

Hydrozone - ANSWERAn irrigation area of plant material with similar watering requirements Isolation Valve - ANSWERgenerally a gate or ball valve serves as a main shut-off device for the complete irrigation system as needed for servicing or repair Lateral Piping - ANSWERPiping between the remote control valve, not subject to constant main line pressure, and the sprinkler heads Main Line - ANSWERLocated between the back flow and the remote control valves. always has pressure Master Valve - ANSWERautomatic valve installed at the supply point which controls water flow into the system main line piping Matched Precipitation (MPR) - ANSWERall sprinkler heads within a watering zone will produce similar precipitation rates, regardless of the pattern they cover Non-Potable Water - ANSWERWater not suitable for human consumption Nozzle Tree - ANSWERinterchangeable nozzle assortment, with different GPM, provided with many rotary heads POC- Point of Connection - ANSWERWhere a connection is made on the service line Polyethylene Pipe - ANSWERflexible plastic pipe which uses insert fittings Pressure Compensating - ANSWERmaintaining a constant discharge pressure regardless of inlet pressure. Pressure Regulator - ANSWERA mechanical device that lowers the water pressure on the downstream side of the unit PVC Pipe - ANSWERPoly Vinyl Chloride Pipe Types of Sensors - ANSWERRain, Freeze, Wind, and Soil Moisture (Rain is mandatory on new systems) Service Line - ANSWERthe piping from the city main line all the way to the back flow device

Sleeves - ANSWERPiping or conduit under hardscapes (driveways, sidewalks) for the purpose of running pipe or wiring Slope - ANSWERA measure of the rate of change of elevation over a prescribed distance Static Water - ANSWERWater that is not moving Swing Joint - ANSWERA flexible joint or pipe connecting a sprinkler head to a pipe. This is to prevent damage to the head due to heavy foot traffic, equipment, etc. Water Hammer - ANSWERexcessive flow velocity and a fast closing valve A properly designed irrigation system can: - ANSWERsave water, time, and money Basic irrigation dates back - ANSWERthousands of years The impact sprinkler head was introduced by Rain Bird in - ANSWER Landscape irrigation as we know it has been around since - ANSWERthe turn of the 20th century The issue of top priority in irrigation today is - ANSWERwater conservation The shortage of water is a result of - ANSWERwater being a fixed resource Possible solutions to the scarcity of water include - ANSWERpromoting xeriscaping Which is not a possible solution for the scarcity of water - ANSWERconstruction of more dams One of the seven basic landscaping principles of Xeriscaping is - ANSWERmulching Efficient irrigation is geared towards - ANSWERmanufacturers, irrigation contractors, homeowners, and proper education Manufacturers can impact water conservation by producing - ANSWERbetter low volume irrigation products Pressure compensating devices help save water because they - ANSWERhelp eliminate misting or fogging at the sprinkler head For irrigation contractors, water conservation starts with - ANSWERa great design

The proper watering time is early in the morning because - ANSWERsprinkler patterns are generally less distorted from the wind What is the most critical part of the system to locate? - ANSWERZone valves Greater PSI equals - ANSWERgreater flow and throw Excessive pressure equals - ANSWERfogging and misting at the head If a full head produces 4GPM what would a half, and quarter produce? - ANSWER2, 1 When diffusing a spray head do not exceed - ANSWERa 25% difference What product do you use in small to medium turf and shrub area? - ANSWERSpray Head What product do you use for large, open areas? - ANSWERRotor Heads What is operating pressure for a spray head? - ANSWER15 to 25 PSI What is the operating pressure for a rotor head? - ANSWER20 to 60 PSI True or False: Precipitation Rate is higher for a spray head than a rotor head. - ANSWERTrue When would you use a bubbler? - ANSWERAround trees to get water directly on roots When do you use drip irrigation? - ANSWERIn small areas like flower beds, it uses emitters to trickle or slowly water small areas. Why do you have to cover PVC Pipe? - ANSWERIt is not UV resistant What type of copper pipe has the heaviest wall thickness? - ANSWERType K What are the two types of pressure regulators? - ANSWERAdjustable and Fixed Which backflow devices do not prevent Back Pressure? - ANSWERPVB, SRPVB Which backflow devices do not prevent health hazards? - ANSWERDouble Check Which of the backflow devices can be under the ground? - ANSWERDouble Check

Which of the backflow devices has to be installed 12" above grade? - ANSWERRPPA How high does a PVB have to be installed? - ANSWER12" above the highest head True or False: Water is compressible - ANSWERFalse How many pounds per gallon is water? - ANSWER8. How much does a cubic foot of water weigh? - ANSWER62.4 pounds True or False: The higher the column of water the greater the pressure - ANSWERTrue How much pressure does one foot of water have? - ANSWER.433 PSI If one foot of head is equal to .433 PSI, how many feet of head is equal to 1 PSI? - ANSWER2. What is the only way to test uniformity accurately? - ANSWERWater audit TCEQ - ANSWERTexas Commission on Environmental Quality IAC - ANSWERIrrigator Advisory Council Irrigation System - ANSWERAssembly of parts permanently installed for the controlled distribution & conservation of water to irrigate plants, reduce dust or control erosion. License Exemptions for Landscapes (SubCh A) - ANSWERPlumber Engineer, Architect or Landscape Architect where irrigation is incidental to their profession. Work by homeowner on an area owned or occupied by them as their home. Maintenance person at the property they maintain. Agriculture department Anyone working under a licensed irrigator on site.

Business owner that employs an irrigator, but must follow rules. Commision Powers & Duties (SubCh B) - ANSWEREnforce:

1. Connection of irrigation systems to any water supply
2. Design, install and operation of systems.
3. Water conservation.
4. Duties & responsibilites of licensed irrigators. Irrigator Advisory Council (SubCh D) - ANSWER9 members appointed by commission. 6 irrigators and 3 public members. Council provides advice to the commission. Must have license if: Licensing Requirements (SubCh F) - ANSWER1. Sell, design, install, maintain, alter, repair, or service irrigation system.
5. Provide consulting irrigation services.
6. Connect irrigation system to any water supply.
7. Inspect irrigation system. Training (Occupational Licensing & Registration; Ch 37) - ANSWERRequire 24 hrs of continuing education credits every 3 years (8 hrs per year). Minimum pressure requirement for Backflows (290.44 Water Distribution) - ANSWERMaintain min pressure of 35 psi at all points within distribution network with flow rates at least 1.5 gpm per connection (Very low standard). Backflow & Siphonage (290.44.h) - ANSWERAll water connections from public drinking water must be protected from contamination where potential hazard exists. Install at the meter through air gap or back flow preventation device.

Cross Connection Control Program (290.44.i) - ANSWERAnnually inspect & test backflow prevention device. Must be inspected upon installation Irrigator-in-Charge (344.1.25) - ANSWERIrrigator responsible for all irrigation work performed by an exempt business owner. Display of Licenses (344.33) - ANSWERMust prominently display license # at employment and must be able to present license if asked. Duties & Responsibilites of Irrigators (344.35) - ANSWERComply with the rules. Be knowledgeable of and responsible for all permits, contracts, agreements, advertising & irrigation services performed with the license. Supervise all irrigation services. Using stamp or seal correctly. Obtaining permits & inspections to install system. Follow local rules. Use correct backflow prevention device. Maintain irrigation system records. Conserve water. Develop & follow irrigation plan for each new system. Design system that complies with rules.

Provide on-site supervision. Provide supervision to tech when connecting water supply or any other work. Complete irrigation system with 1. walk through, 2. inspection checklist, 3. irrigator's sticker on ctrl or inspection, 4. design plan. Sell, consult, maintain, alter, repair or service by rules. Give advertisements, contracts and warranties that follow rules. Install irrigation system that follows rules. Records (344.38) - ANSWERKeep records for 3 years from date that can be available within 10 days. Seal Display (344.42) - ANSWERMust be clearly visible. May use electronic format of the seal. Seal Use (344.43) - ANSWERApply seal above irrigator's signature and the date of signing. Irrigator's seal on any document gives acceptance of responsibility of document & work performed. Maintain for 3 years all documents. Seal on both edges of page with a start and stop to clearly identify responsibility.

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