I'm actually scheming to how I could build a 4-6 zone system off a hose bib put the valve box right next to the bib and run 6 valves with poly to each zone, then inside my basement where the bib comes out of the house I have power so I could set a rachio right inside the basement powering the valves. I have 7.5 GPM coming out of the bib and most of the mp rotator seem to use .4ish-.8ish GPM. So hypothetically I could run 5-6 heads per zone giving me 24-36 heads covering 8000k, which I think would give me pretty good coverage. Still have to make sure the head to head coverage is there.
Essentially this gives me the awesomeness of the rachio without having 2 timers hanging off each hose bib on the outside of my house.
Just don't confuse precipitation rate (in/hr) with GPM - a 360° MP2000 flows more like 1.48 GPM at 40psi.
I won't say it can't be done, but I think it would be tedious to irrigate an 8k lawn with 7.5 GPM. Getting 1" of irrigation on 8k ft2 requires nearly 5,000 gallons of water. At 7.5 GPM, that would take over 11 hours of runtime, and that's if the system was 100% efficient - meaning you were using the full 7.5 GPM for every zone and minute of runtime. I promise I'm not trying to discourage you - just throwing some ideas out there for you to consider. :thumbup:
For instance, I almost wish I would have combined zones 2 & 3 on my plan
. I separated them because the MP side strip nozzles have a slightly higher precipitation rate, but in reality it probably doesn't matter much. What it costs me is run time - if it were one zone, I could put down 1" of irrigation on that total area in 2.5 hours (at the MPR precipitation rate of 0.4 in/hr), but instead it takes more like 5 hours because Rachio won't run two zones at one time. Granted, there are some things I could do to get around that, and with flex scheduling the system never tries to put down 1" of irrigation at a time, but you get the idea. :thumbup:
I actually read through your post last night, very helpful. May I ask how many Sq ft you have, more so I can reference it against my yard, I believe I count 54 heads in your yard.
What software did you use to draw that up?
I'm currently irrigating about 7k, but I designed the system to account for a future sidewalk (on the left side of the drawing). It will be more like 6k when it gets built.
I used AutoCAD for my drawing.