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AR15.COM
10/29/2016 7:35:57 PM EDT
I've got some guys over today installing baseboards and they hit a cold water line with a nail.  Weird thing is, this is the second group of water lines going upstairs.  This wall has 2 cold and one hot line.  They hit a cold line. The other group of pipes under the stairs has 2 cold and 2 hot. Near my water heater I've got the cold water line incoming from the street with a shutoff valve.  House is on a slab and all of the hot and cold lines going upstairs are coming out of the slab.  House was built mid 90s.

So I have 4 cold lines and 3 hot lines going upstairs, why so many?  With 2 full baths upstairs is this normal?
10/29/2016 7:39:25 PM EDT
[#1]
You should have Hot and Cold potable water,
Hot feed and return for heat.
10/29/2016 7:39:43 PM EDT
[#2]
Sure, all depends on where the hot/cold is needed & where it is available/easiest to feed it from...







...remember the golden rules of plumbing: 1) Shit flows downhill 2) Don't put your fingers in your mouth
10/29/2016 7:42:28 PM EDT
[#3]
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Sure, all depends on where the hot/cold is needed & where it is available/easiest to feed it from...







...remember the golden rules of plumbing: 1) Shit flows downhill 2) Don't put your fingers in your mouth
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3)  Payday is Friday
10/29/2016 7:44:10 PM EDT
[#4]
one cold line could go to a point of use water heater, sort of like a very small water heater.
10/29/2016 7:50:07 PM EDT
[#5]
Here's another.



Why don't you guys pull the belt in one more notch and try to eliminate the amount of visible crack?
10/29/2016 7:51:31 PM EDT
[#6]
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Here's another.

Why don't you guys pull the belt in one more notch and try to eliminate the amount of visible crack?
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suspenders are key
10/29/2016 7:52:53 PM EDT
[#7]
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Quoted:
one cold line could go to a point of use water heater, sort of like a very small water heater.
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I don't think so.  We've been in the house 7 years and unless they put it inside a wall, I think I would have found that by now.
10/29/2016 7:55:40 PM EDT
[#8]
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I don't think so.  We've been in the house 7 years and unless they put it inside a wall, I think I would have found that by now.
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Quoted:
one cold line could go to a point of use water heater, sort of like a very small water heater.



I don't think so.  We've been in the house 7 years and unless they put it inside a wall, I think I would have found that by now.

well we have no clue from your post what fixtures  are "upstairs"
10/29/2016 7:55:58 PM EDT
[#9]
My guess is the plumbers were paid by the fitting.
10/29/2016 7:57:16 PM EDT
[#10]
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My guess is the plumbers were paid by the fitting.
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maybe they ran some futures
10/29/2016 8:09:03 PM EDT
[#11]
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well we have no clue from your post what fixtures  are "upstairs"
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Quoted:
Quoted:
Quoted:
one cold line could go to a point of use water heater, sort of like a very small water heater.



I don't think so.  We've been in the house 7 years and unless they put it inside a wall, I think I would have found that by now.

well we have no clue from your post what fixtures  are "upstairs"


That might be helpful.

Master bath:  2 sinks, bathtub, shower, toilet.
Guest bath: 1 sink, bathtub w/shower, toilet

10/29/2016 8:10:04 PM EDT
[#12]

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maybe they ran some futures

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Quoted:

My guess is the plumbers were paid by the fitting.


maybe they ran some futures

The "extra" cold line could actually be a return line for a recirc pump.

I've run into that before. Made installing one a breeze. I often try to think ahead and prewire or plumb when doing remodels. It doesn't cost much compared to doing it after.



 
10/29/2016 9:31:54 PM EDT
[#13]
First thing I learned as a plumber
  1. Stink goes up

  2 Shit goes down
 
   3 And payday is on Friday ??
10/29/2016 9:44:56 PM EDT
[#14]
Cold is on the right



Don't look up with your mouth open
10/29/2016 10:03:57 PM EDT
[#15]
Unused hot water "run around" loop?

Did you or do you have a small pump around your hot water tank?