Best Water Pipe From Meter to Home?

[Anonymous]

Posted by: Jimbo (old forum transfer)
Posted - 04/09/2002 : 21:11:21

To bring county water from road up to house, probably 250', alongside a slowly curving driveway, should I use heavy poly tubing, 3/4" Shed 40 PVC, or what? As far as I know, the water district leaves it up to me, totally, on my side of the meter

[Anonymous]

Posted by: Jimbo
Posted - 04/09/2002 : 21:39:22

PS This is Oregon coast, so freezing below surface is not an issue

[Anonymous]

Posted by: Wgoodrich
Posted - 04/09/2002 : 22:50:30

The minimum working pressure rating of your water supply line must be at least rated for 160 PSI @ 73 degree F. Minimum static pressure rating must be 40 PSI. ABS plastic Pipe sch. 40 or 80. You would have to calculate your fixture unit values to be able to know your minimum normal water supply line size. Then you must adjust that size larger as you increase and experience friction in that line due to the length of your line that you are running. The size of the inlet pipe is determined by the fixture unit values. The water supply line is then calculated from that water supply inlet pipe size then adjustments must be made making the pipe larger due to the distance your water supply line must travel.

Hope this helps

Wg

[Anonymous]

Posted by: Jimbo
Posted - 04/11/2002 : 10:39:41

Wg, you are suggesting that ABS is the pipe of choice, over PVC? I always thought PVC for supply, ABS for waste.

And, what do you know about flexible poly tubing? Some around here seem to favor it, especially the heavier gauge type.

Hard to say what diameter "should" be, as we're starting out w/ tiny house and may later build larger. Might ought to switch to 1", just to be safe.

[Anonymous]

Posted by: Wgoodrich
Posted - 04/11/2002 : 15:30:05

The polyethethylene flexible plastic piping is the most commonly used in this area, too. I am not issuing a preference to what I would use just what is accepted. As long as the piping is approved for 160 psi working pressure and 40 psi static pressure and proper listed and labled connections are used you can use a large variety of piping material as a water supply.

Just make sure not to kink the piping and leave methods for ground heave if a condition exists.

Sizing depends on the fixture units your are using.

If you have the following in your home or plan to use the following;

two baths 5.2
kitchen group 2.5
laundry group 2.5
hose bib 2.5

You should have a minimum size of 11.7 water supply fixture units converted to a supply line size of 3/4".

Considering the distance you are talking and possible future load I would use a 1" to a 1 1/4". I oversizing the supply line you will offset friction concern due to distance served by the supply line and provide plenty of future use concerns without increasing cost formidably.

Hope this helps

Wg

[Anonymous]

Posted by: Jimbo
Posted - 04/15/2002 : 21:40:25

Wg,

I think you're right about line size (1 or even 1 1/4"), especially after I actually measured distance. It's more like 350', and probably rises 12-15'.

Thanks for input, as usual.

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