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I am planing to install water lines as you can see in the picture. Right now I I have a water hose that runs along the house, I am referring to the segment that goes along the wall between the patio and the house.

The other two segments together with this one are what I am planing to install.

For now I just have a water hose that I run along the line above described. There is a gap space between the house and the patio where a pipe/water hose fits just fine. My plan would be to install the first segment of the future irrigation system and to connect the water hose to it for now (no sprinklers so no water pressure loss) because I want to cover that gap with peanut size decorative stone. Later I would disconnect the water hose and fully install the irrigation system. As an alternate solution I would love to leave the water hose there till I proceed with the irrigation system plans but I am afraid that the water hose is not winter resistant, so my question is: can I put an irrigation system segment there and connect the water hose to it at at the point where the irrigation line reaches the corner of the house?

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  • Why not just install another hose bib on the wall with the two basement windows? – longneck Jul 11 '16 at 17:05
  • Too much work and I am not going to need it anymore when the irrigation system is in place – MiniMe Jul 11 '16 at 17:55
  • I have both my front and back yard irrigation fed with garden hose that attaches to a 1/4 drip line per shrub. I use two maybe three 5 port adapters in the front to help with pressure drop as it is fairly large. Also use a pressure reducers at main spigots. Been doing this way for over 6 years and minor problems but easily fixed. – Kris Nov 26 '16 at 11:25
  • I plan to use sprinklers – MiniMe Sep 28 '17 at 10:29
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I'm actually wanting to do this myself. I've looked into it for quite awhile. There is one video on youtube that is amazing. His system has been up for nearly 5 years without any problems. I'm at work and cant search youtube, but if you look up "150$ diy irrigation system" you will find it.

Some things to consider.
1. Water pressure from the garden hose won't be able to support more than 1 (maybe 2) sprinklers at a time. Depending on the type and GPM you get at your house. Test this with a 5 gallon bucket, I'm able to run one rotor 50ft throw and 2 very tiny low pressure nozzles at the same time.

  1. If The larger pipe or hose you use, the more pressure you get. I just bought 1 inch irrigation hose with an adapter to 3/4 inch for the sprinkler. I have a smaller yard, so I can get about 90% of the yard with one 50ft throw sprinkler. The smaller the diameter of the main, and hose the lower GPM you will have.

Edit Okay for people who think smaller water pipes will increase water pressure, no. It's about fiction, volume and speed. Below is a great read about it, with some quotes.

https://www.irrigationtutorials.com/using-a-smaller-pipe-to-increase-water-pressure/

Grab your thinking caps for this. As you well know, Bernoulli’s Principle essentially says (paraphrased) that as the speed of a fluid increases, the pressure of that fluid decreases.

Obviously as you force a given amount of water through a smaller size pipe, the velocity of the water must increase for it to get through the smaller pipe. According to Bernoulli’s Principle that will decrease the water pressure! This is called the Venturi effect. By suddenly forcing the water through a narrow passage you can actually create enough of a pressure decrease that it creates suction. This is how many fertilizer injectors work. It also is another reason why using a smaller pipe would not increase the pressure– it would actually decrease it!

  • 2
    #1 is likely true but #2 is wrong. Fluid Dynamics 101 - for a given volume of water and given flow rate, the larger the diameter of the pipe, the lower the pressure. If your house feed is 3/4", and you connect a 1" hose to it, there will be a pressure drop. If you then connect a 3/4 adapter on the other end of the hose, there will be a pressure increase back to the original level. – The Evil Greebo May 11 '17 at 13:39
  • Umm no. For a given flow rate the larger the pipe the less pressure is lost along the pipe. Pipes and fittings never increase pressure. – Peter Green Sep 25 '17 at 3:29
  • Read edits please. – BigElittles Sep 27 '17 at 15:41

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