Texas Irrigator License Exam 2020: Hydraulics Exam Questions And Answers

Texas Irrigator License Exam 2020: Hydraulics Exam Questions And Answers Hydraulic Design Steps - ANS 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 Abilene) --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 --Determine precipitation rate C-Factor - ANS Rating of the smoothness of the inside of the pipe. Higher C-factor = smoother PVC is 150. Copper is 140.