Texas Irrigator License Exam 2020: Hydraulics(100% Verified!!)

Texas Irrigator License Exam 2020:
Hydraulics(100% Verified!!)

Hydraulic Design Steps - ANSWER1. 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. Schedule