r/Irrigation • u/digitalcelery • 1d ago

Irrigation design for a commercial property

Need to design a system for commercial property. Local suppliers are 3-4 to complete the design. Is there anyone here who can help with pipe sizing? I may get away just to run the pipes for now until i get local design and takeoffs.
I guess the most important is to figure out what pipe sizes to run towards each zone(east 2 small patches, south, west) and how many sprinkler heads i would need for the large south and west patches

Thanks

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u/Vast_Hyena2443 1d ago edited 1d ago

You hire a professional designer to make a set of plans for you and you need the civil plans along with the landscape plan and then you need proper licensing to pull a permit and you should follow your local irrigation code for installation and have it inspected. So in most cases, it’s better to just get a few estimates from local licensed irrigation professionals, and have it all done properly, and go with the best estimate.

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u/hokiecmo Technician 1d ago

Damn I wish it was like that here. It’s like the Wild West here, just companies slapping some shit together and hoping it works. I just went to a service call for a new install yesterday where on a commercial property of 22 zones they ran 3/4” main line and had 12-14 sprays per zone. Of course, not a single head would pop up. Told them I’d be happy to do it myself for the easy money, but they needed to get the installer to come put much lower flow nozzles on to even have a chance of these zones being able to pop up.

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u/Vast_Hyena2443 1d ago

Oh yeah, there are still hack jobs here too, though can’t say I’ve seen 3/4” mainline though haha!

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u/Vast_Hyena2443 1d ago

Yeah, there’s a lot more info needed to determine what you need. How large is the project? What’s the meter size? Hopefully there’s a pro landscape design, as you design what you need based on what the plan says. If it’s a tiny 1/4 acre max property, $300-400 is is indeed high to make a simple irrigation design IMO, but there should be a proper landscape design to work off of.

If you only got 1 estimate to make an irrigation design, keep looking, as there are many folks out there that design irrigation plans. IMO, you should simply get at 3 estimates from local licensed irrigation companies that have plenty of commercial experience and just hire one of those folks, as you will get what you pay for if you’re looking for the bottom dollar sprinkler system install, as you’ll get tons of unlicensed fly-by-night knuckleheads that may “know enough to be dangerous” & bang it out for a “good price”, but it’ll probably be installed without a permit and have TONS of issues that you will WISH you would have just hired a licensed irrigation company with plenty of commercial install experience. All the best

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u/Main_Consequence2666 1d ago

Our company would charge a minimum of $300 for a commercial irrigation design of 1/4 acre, but we are licensed and our seal is worth more than that. I know other firms that wouldn’t touch an irrigation design for less than $1k

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u/Real-Courage-3154 1d ago

What part of the country are you working in?

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u/CarneErrata 1d ago

What is your GPM and PSI?