Texas Irrigator License Exam Hydraulics Questions With Complete Solution 2025/2026

Texas Irrigator License Exam Hydraulics Questions With Complete Solution 2025/2026 Hydraulic Design Steps - answer-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. Schedule --Determine precipitation rate C-Factor - answer-Rating of the smoothness of the inside of the pipe. Higher C-factor = smoother PVC is 150. Copper is 140. Generally decreases over time meaning the pipe gets rougher and more friction loss. Densogram - answer-Graphic view of precipitation to check uniformity. Higher rates are darker