DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Plumbing (http://www.diychatroom.com/f7/)
-   -   size of supply lies for new bathroom (http://www.diychatroom.com/f7/size-supply-lies-new-bathroom-165952/)

gwilkrrs 12-08-2012 08:04 PM

size of supply lies for new bathroom
 
i am building an addition with a full bathroom. i am bringing the hot and cold supply lines to it with 3/4" lines. i plan to transition down to 1/2" lines right at each individual fixture. is this ok or should i step down to 1/2" as i come off the main lines and run the individual supplies in 1/2"?

joecaption 12-08-2012 08:09 PM

1/2" off of the main line.

gwilkrrs 12-08-2012 08:54 PM

ok- i was wondering because off the main lines i will run about 16'-20' to each fixture and didnt know if the 3/4" would hold more water for those distances.....

techpappy 12-08-2012 11:09 PM

3/4 lines allow over twice the volume of 1/2 inch however, unless your water pressure is very low the 16 -20 foot 1/2 inch lines should handle the flow easily. UNLESS..you ARE INSTALLING SOMETHING LIKE A SUPER SHOWER WITH 6 HEADS!!:jester:then 3/4 might be required.

gwilkrrs 12-09-2012 06:39 AM

nothing fancy in there- double vanity, ttoilet and standard shower. just dont want to goof this up and wish i had more

techpappy 12-09-2012 10:05 AM

I n my last house where I acted as General Contractor I was on a well and had 3/4 mains in basement with 1/2 inch to fixtures including MB ensuite on second floor which was farthest from pressure tank (65') with no problems. When we sold, the home inspector ran the tub, shower and sink full blast then flushed the toilet with no discernible drop in flow and gave it the ol':thumbsup:

DidIDoThat 12-09-2012 03:21 PM

Quote:

Originally Posted by gwilkrrs (Post 1069337)
nothing fancy in there- double vanity, ttoilet and standard shower. just dont want to goof this up and wish i had more

Just run 3/4" to the bathroom then 1/2" to the fixtures.
The cost difference is minimal for a job this size.


All times are GMT -5. The time now is 02:28 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved