I have installed a Railbird XFS subsurface dripline for vine around my home. How do I calculate the inches per hour when setting up a custom emitter?
For example, if the flow rate is 0.6 gph for each emitter, and they are spaced 12 inches apart. What would be the inches/hr of a 100’ length of dripline? what is the formula to use?
Do you know if the Rainbird XFS subsurface you installed is a grid? I only ask because if there are two emitters per square foot that could make a difference on the precipitation rate.
Thanks for your help. One follow up question: Do I need to adjust for subsurface vs. surface drip irrigation? The reason I’m wondering is, although surface emitters are more efficient than spray heads, surface emitters aren’t quite as efficient as subsurface emitters—the latter delivers water right at the root system. Assuming you take runoff into account when determining watering times for spray heads, I want to make sure I do not overwater by just supplementing the flow rate of my dripline for the flow rate of a spray head.
Great question. To correct for subsurface vs. surface drip irrigation efficiency, you would need to make an adjustment to your advanced settings within the zone menu; see this link for more information.
You’ll want to adjust the efficiency of the zone. I’d ballpark a subsurface drip line to be 80-90% efficient. It’s very hard to achieve 100% efficiency.
This was very informative. I have a similar question about the drip line. I have a hunter drip line which is 1.0 gph. Mine is set up for the trees where a line runs behind the trees and in front of the trees. Woul really appreciate help in determining the nozzle to use.
@epelba01, it was a pleasure chatting with you this afternoon. Did you get the support email I sent you with the links on how to calculate your precip rates?
Did you have any other questions we could assist you with in the setup of your Iro? Happy to help with calculating precip rates, reviewing schedules, etc.