Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-18-2012, 11:01 AM   #1
Newbie
 
Join Date: Dec 2012
Posts: 2
Share |
Default

Copper pipe sizing


Hello all, and thank-you in advance for any replies!
I'm about to start replumbing my house and would like a little piece of mind that what I'm planning is OK to do. Currently I have a 3/4 main line coming into my single story home. Immediately after the water heater both the cold and hot supply lines drop down to 1/2. I'm kinda getting tired of getting burn when someone flushes the toilet while taking a shower I'm planning on bumping the supply lines up to 3/4 and adding a water softener. The result will be something like this. 3/4 coming into the house and branching of 3/4 for the softener and heater, then having 3 separate 3/4 supply lines. 1 for hard water, 1 for soft cold and 1 for soft hot water. I will be branching off the supply lines with 1/2 for each fixture. My main worry, would be over taxing the single 3/4 main coming into the house by dividing it into 3 lines. Would this cause any problems? If it matter, all 3 supply lines will be about 20' long and each line will supply as follows:
Hard line - 1 outside spigot, toilet, cold kitchen sink/ice maker.
cold soft - 1 bath, 1bath sink.
hot soft - 1 bath, 1 bath sink, 1 kitchen sink w/ dishwasher.
3/4 might be over kill, but I'm getting some from my Bro that I would like to use. Also leaves room for upgrades

Gclark423 is offline   Reply With Quote
Old 12-18-2012, 11:10 AM   #2
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 25,761
Default

Copper pipe sizing


The ony line I would connect up to hard water would be the outside faucet, you do not want rust stains in the toilet and in the ice.
Using 3/4 for all your main runs will have no bad effects, and will increase the avalible flow.
Why copper and not Pex? Cheaper, a whole lot faster to install, far less fittings used, less likly to burst if it freezes.

joecaption is offline   Reply With Quote
Old 12-18-2012, 11:16 AM   #3
Roofmaster
 
Join Date: Oct 2012
Location: Maryland
Posts: 3,439
Default

Copper pipe sizing


Why dont you use Pex and a home run manifold system? You say "some" pipe from your Bro. enough to offset the savings for a complete replumb with Pex?

If you only have 3/4 coming in, I would just run 3/4 mains, and branch to 1/2 for the fixtures. Acidic water? use Pex, not copper
__________________
" A lot of men build things, and a lot of things fall down "

jagans is offline   Reply With Quote
Old 12-18-2012, 11:29 AM   #4
Member
 
Join Date: Oct 2009
Location: Minneapolis, MN
Posts: 490
Default

Copper pipe sizing


You may want to check with your local inspector on pex limitations. When my local permit inspector was out checking my copper rough in, I asked him about pex. He said the only limitation was that I, as the homeowner, had to be certified to install pex. He seemed to indicate that HD or Menard's offered classes that you could get certified through. Copper rough is always a bugger. I had a few pinhole leaks. Plus, even though I take the proper protection, open flame in the house is worrisome. I sweat as much as possible in the garage.

B
Beepster is offline   Reply With Quote
Old 12-18-2012, 01:12 PM   #5
Newbie
 
Join Date: Dec 2012
Posts: 2
Default

Copper pipe sizing


Thanks for such quick replies! Last I had heard, copper was my only option with local code, but that was a year or two ago when I first heard about PEX. I'll have to ask.

Now there's something I've never considered. Beepster mentioned pin hole leaks. I'm sure I'll have a few with that many joints (If I stay with copper anyway). So when this thing starts leaking like the titanic, is it usually required to take the joint completely apart? I have done some sweating in the past, but only a few joints and never really ran into that.
Gclark423 is offline   Reply With Quote
Old 12-18-2012, 01:17 PM   #6
Member
 
Join Date: Jan 2004
Location: Charles Town, WV
Posts: 81
Send a message via AIM to Rich Send a message via Yahoo to Rich
Default

Copper pipe sizing


Quote:
Originally Posted by Beepster View Post
He said the only limitation was that I, as the homeowner, had to be certified to install pex. B
Must be something local. Neither the IRC or UPC say you have to be certified to install it. They do say for CSST (for gas lines) you need to be certified. Also the PEX manufacturer may also only honor warranty when installed by a certified installer.
Rich is offline   Reply With Quote
Old 12-18-2012, 01:46 PM   #7
Roofmaster
 
Join Date: Oct 2012
Location: Maryland
Posts: 3,439
Default

Copper pipe sizing


Someone who knows how to sweat copper never "expects" anything to leak, and it usually dosen't. In hearing your experience level, you would have to be daft to go with anything but PEX. There really are no iffs with PEX.

I was taught right with copper and can honestly say I have never had a leak.

Acidic water is hell on copper, so if you have it, forget copper.
__________________
" A lot of men build things, and a lot of things fall down "

jagans is offline   Reply With Quote
Old 12-18-2012, 02:20 PM   #8
Member
 
Join Date: Oct 2009
Location: Minneapolis, MN
Posts: 490
Default

Copper pipe sizing


And to add, if i had to do copper again, I would use the MAP gas torches, not the propane.

B
Beepster is offline   Reply With Quote
Old 12-18-2012, 04:46 PM   #9
Special User
 
Join Date: Jul 2012
Location: Idaho, US
Posts: 551
Default

Copper pipe sizing


Another active thread on sizing pipes:

Supply Line Sizing with PEX

__________________
The above post is for entertainment purposes only. Its contents may, and probably will, lead to legal liability and damage or loss of property, life, or limb. Use at your own risk.
tylernt is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How To Bring Copper Pipe Through Concrete Block Starlight Plumbing 14 12-15-2012 07:48 AM
PVC air admittance value and copper waste pipe diy888 Plumbing 2 02-16-2011 07:48 AM
Copper to Black Pipe Gas Connection dwolek HVAC 1 03-15-2010 05:02 PM
sizing gas pipe SNC Plumbing 3 12-10-2008 07:33 PM
copper strap around copper pipe? analogmusicman Plumbing 3 06-04-2008 10:55 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.