TEXAS IRRIGATOR LICENSE :
HYDRAULICS QUESTIONS WITH
VERIFIED ANSWERS [2026/2027]
Hydraulic Design Steps - Correct Answers -1. Layout heads
2. Head inventory
3. Group in Zones
--Determine limiting gpm from WM & service line
4. Layout Pipe
--Put valve in middle & closer to side with less gpm to make the critical head calculations easier.
5. Size pipe
--Start at a dead end.
--Work towards the water source.
--Don't size a pipe unless everything downstream has been sized.
--Make mainlines 1" or larger
6. Check Critical Head
--L. F. D. 100. I. A. (Ladies Fall Down 100x In Abeline)
--Length of pipe, Flow, Diameter of pipe, pressure loss per 100', Item loss, Accumulated loss
--LFD. Use Design
--100. Uses Reference Charts
--I. Use #s from LFD & 100 for Item loss.
--A. Add losses from I.
, --Other Equations. Use DP (Design Pressure) & AHP (Actual Head Pressure) to determine if the
zone works.
7.BScheduleB
--DetermineBprecipitationBrate
C-FactorB-BCorrectBAnswersB-RatingBofBtheBsmoothnessBofBtheBinsideBofBtheBpipe.B
HigherBC-factorB=Bsmoother
PVCBisB150.BCopperBisB140.
GenerallyBdecreasesBoverBtimeBmeaningBtheBpipeBgetsBrougherBandBmoreBfrictionBloss.
DensogramB-BCorrectBAnswersB-GraphicBviewBofBprecipitationBtoBcheckBuniformity.
HigherBratesBareBdarker.
DistributionBUniformityB(DU)B-BCorrectBAnswersB-
UniformityBofBdistributionBofBwaterBoverBaBgivenBareaBasBaB%.B
FoundBbyBdoingBaBcatchBcanBtest.
CloserBtoB100%BisBbetterBwithB75%-80%Bexcellent,B65%-75%BgoodBandB<65%Bpoor.
DynamicBWaterB-BCorrectBAnswersB-WaterBinBmotion
HYDRAULICS QUESTIONS WITH
VERIFIED ANSWERS [2026/2027]
Hydraulic Design Steps - Correct Answers -1. Layout heads
2. Head inventory
3. Group in Zones
--Determine limiting gpm from WM & service line
4. Layout Pipe
--Put valve in middle & closer to side with less gpm to make the critical head calculations easier.
5. Size pipe
--Start at a dead end.
--Work towards the water source.
--Don't size a pipe unless everything downstream has been sized.
--Make mainlines 1" or larger
6. Check Critical Head
--L. F. D. 100. I. A. (Ladies Fall Down 100x In Abeline)
--Length of pipe, Flow, Diameter of pipe, pressure loss per 100', Item loss, Accumulated loss
--LFD. Use Design
--100. Uses Reference Charts
--I. Use #s from LFD & 100 for Item loss.
--A. Add losses from I.
, --Other Equations. Use DP (Design Pressure) & AHP (Actual Head Pressure) to determine if the
zone works.
7.BScheduleB
--DetermineBprecipitationBrate
C-FactorB-BCorrectBAnswersB-RatingBofBtheBsmoothnessBofBtheBinsideBofBtheBpipe.B
HigherBC-factorB=Bsmoother
PVCBisB150.BCopperBisB140.
GenerallyBdecreasesBoverBtimeBmeaningBtheBpipeBgetsBrougherBandBmoreBfrictionBloss.
DensogramB-BCorrectBAnswersB-GraphicBviewBofBprecipitationBtoBcheckBuniformity.
HigherBratesBareBdarker.
DistributionBUniformityB(DU)B-BCorrectBAnswersB-
UniformityBofBdistributionBofBwaterBoverBaBgivenBareaBasBaB%.B
FoundBbyBdoingBaBcatchBcanBtest.
CloserBtoB100%BisBbetterBwithB75%-80%Bexcellent,B65%-75%BgoodBandB<65%Bpoor.
DynamicBWaterB-BCorrectBAnswersB-WaterBinBmotion
