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Discussion in 'Irrigation' started by sheshovel, Jun 16, 2005.
this was at a new commercial I happened to be checking out,the whole install is a big joke.
That must be trick photography because it looks like nothing more than 1/4" distribution tubing, or perhaps laser drip tubing.
Lets see... if you run forty feet of this stuff, branch once, then branch again, you could probably end up with a nice low gallonage drip at the ends. "Look ma, no need for emitters."
I saw a guy's garden last month that was the same way... All 1/4 inch tubing and I'd bet there was a mile of it on this 40' x 40' garden plot. All of it snaked back to this "distribution hub" that was nailed to the fence and hooked to a garden hose. I guess if he just left it on 24/7 it may drip enough to water a few things... Just kinda stupid if you ask me.
My tech went to one job this spring that had 7 zones full of microsprays. He said there were about 30 per zone, so about 210 microsprays sticking up 12" all over this guy's property through the beds. There are way better options for what was done there.
I have never done drip irrigation before, but will need to in a few months when we put in our flower/shrub bed. Sorry for being a newbie here, but could anyone explain what exactly is wrong with this and/or what you should/shouldn't do for drip irrigation?
Well there are alot of things,have to get back to you tommorrow on this though,gotta go now,read back tommorrow afternoon and I will try to give you some answers.
Surge, as Sheshovel said, there is a lot to drip irrigation. Drip irrigation is sort of an all-generic term that includes a number of things, which also include a whole lot of products from a number of manufactures. Proper design shouldnt be taken lightly. Just as in designing a regular sprinkler system, drip also has similar requirements and calculations to consider. In a standard lawn irrigation system you wouldnt expect to see ¼ tubing, like in the picture above, winding around from sprinkler to sprinkler. If you did see such a setup, youd probably laugh and say that obviously isnt going to work! But knowing why it wouldnt work is a bit different than just seeing that it wont.
Ive installed a lot of drip systems, and just got through with one last week where after I tested the system I noticed that I screwed up. Instead of drips coming out of some of the emitters I put on, it was more like streams of water. Well, what the hey??? I found out that my eyes tricked me and instead of installing some 1 gph emitters around a number of plants, I had actually just installed some unrestricted flow bugs. Oops! That was about as good as installing some emitters backwards.
Bottom line is that it doesnt take a whole lot to make a system not work, or not work correctly. Sheshovel can probably explain further on the picture, and whats wrong with the design, but Surge if I were you Id start researching some of the basics on the subject. If I find a good link Ill post it.
Try to get a hold of Rainbird's Xerigation Manual (D39030) and you will have a detailed overview of the process and products.
This is the link for Rainbirds Drip Design Guide. They also have a Low Volume Guide that is more technical.
Thanks guys, especially for that link. Looks like I have alot of reading ahead of me