Timeline for 14k gal/week irrigation system design -- am I missing anything? Who can I pay to review it?
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14 events
| when toggle format | what | by | license | comment | |
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| Aug 3, 2022 at 16:20 | vote | accept | materialDefender | ||
| Jul 31, 2022 at 22:44 | comment | added | Jurp | @Gyrfalcon - thanks. True for some of the plots, especially the entire right-hand zone, but the center zone plots are unspecified, as is one of the left-hand plots. Not a huge deal, I'd say, especially since crop-rotation would only apply to the center zone, if at all. | |
| Jul 31, 2022 at 21:38 | comment | added | Ecnerwal | If only one zone is active at a time, the fertilizer injection location is fine, if it can be turned on/off or have correct material for the plot put into it, I think. You pay for these folks already, might as well use them: extension.wsu.edu/snohomish | |
| Jul 31, 2022 at 21:35 | comment | added | materialDefender | @Ecnerwal thanks for bringing my attention to the pipe sizing! We will be running the system as you say, with one zone active at a time. I was using a pipe size calculator based on the flow rate, but I was unreasonably hesitant to lose pressure. You're right, it's worth saving $$$ for a 6 PSI loss when the well outputs 50-60 PSI. I'll reconsider the fertilizer injection location, we're not sure yet if we'll be doing liquid fert at all but it would make sense to have per-plot control over that. We're in NW Snohomish County in WA. | |
| Jul 31, 2022 at 21:27 | comment | added | materialDefender | @Gyrfalcon thanks for pointing out that I should be thinking about water delivery systems! My fiancée says she'll want some wobbler sprinklers, I was previously thinking everything would be drip. | |
| Jul 31, 2022 at 20:21 | comment | added | Ecnerwal | Where on the planet is this? Not so detailed as to drive by, but enough detail (country, state/province, possibly county) to point to local agricultural support resources would be useful, given the question. | |
| Jul 31, 2022 at 19:59 | answer | added | Ecnerwal | timeline score: 4 | |
| Jul 31, 2022 at 19:29 | comment | added | Ecnerwal | Will you plan to run this system in a manner where only one zone is open at a time so your apparent maximum flow rate is 18 GPM? Since that only amounts to 13 hours out of 168 to run your 14,000 gallons, it should be easy enough to schedule the application that way (even with the lower flowing zones.) That rate only amounts to 14 ft head (6 PSI) in 500 feet of 1.5" plastic pipe, so if the pump has adequate flow and pressure, 2" may be overkill. | |
| Jul 31, 2022 at 19:14 | comment | added | Ecnerwal | Pipe sizes should start large and may get smaller near the ends (if economically sensible) and size of pipe relates more to flow and how long than the apparent Rule of Thumb you list relating size only to length, and not at all to flow through the pipe. Black polyethylene pipe may be more cost effective than PVC for your underground runs, depending on delivered cost - it's certainly more damage and freeze resistant. The fertilizer injector location seems to think all crops get the same fertilizer, which seems wrong. | |
| Jul 31, 2022 at 14:26 | comment | added | Gyrfalcon | @Jurp Yes. I read "blueberries", "perennials", and "trees" which I do not relate to crop rotation. | |
| Jul 31, 2022 at 13:33 | comment | added | Jurp | @Gyrfalcon - not a bad methodology, but the OP has to take crop rotation into account. IIRC, water needs for Solanaceae are different from those of Brassicaceae. Maybe use the water requirements of the thirstiest crop as the baseline? | |
| Jul 31, 2022 at 13:25 | comment | added | Gyrfalcon | Personally, I would approach the project in another way: Define which plants occupies which areas and what are the need for water per day. Then investigate which system (dripper hoses, water cannons) is optimal for each area. Then you will know the required pressure, and then you can choose pipe dimensions and pump performance. | |
| S Jul 31, 2022 at 0:06 | review | First questions | |||
| Jul 31, 2022 at 13:34 | |||||
| S Jul 31, 2022 at 0:06 | history | asked | materialDefender | CC BY-SA 4.0 |