Return to the Plumbing Forum | Post a Follow-Up

 o
Correct pipe size

Posted by lameduck (My Page) on
Fri, Sep 3, 10 at 18:34

I am in the planning stages of plumbing a 2200 sq. ft. single story home. Home has kit., utilty with sink, 2 baths, 4 hose bibs. Will be using flowguard gold cpvc. Will 3/4" for the supply lines @ 1/2" for the branch lines be ok for volume and pressure? Thanks


Follow-Up Postings:

 o
RE: Correct pipe size

Can't say without knowing the :

1. street pressure

2.the developed length of the pipe from the street to the farthest fixture.

3. Total number of all fixtures in house. (What? No laundry? How many sinks in baths?How many shower heads in showers?)

4. Plans for any future development like lawn sprinklers, baths, fire-sprinkler systems, etc...

Please provide.


 o
RE: Correct pipe size

THANKS FOR THE REPLY MANHATTEN42: Water supply from well app. 300',1 1/4" line. good volume and pressure. If needed I will install tank at house for correct pressure.

From the 1 1/4" line or new tank I was going to reduce to 3/4"(30') to hotwater heater.

Fixtures: 1 sink each in kitchen and laundry. Mb rm 1 toilet,2 lav.,1 tub no shower. Guest br. 2 lav.,1 toilet, 1 tub 1 shower. Outside 4 hose bibs. Thanks again


 o
RE: Correct pipe size

I came up with 22.2 water supply fixture units for the current load on the system.

Presuming a 50psi water pressure at the pump, and a 60 ft maximum developed length of pipe to the furthest fixture, the Tables from the IRC/IPC require a minimum of a 3/4" to 1" distribution pipe branches to all fixture groups with 1/2" pipe to individual fixtures.

Other codes or methods of determining the load may vary.


 o
RE: Correct pipe size

manhattan42 THANK YOU VERY MUCH.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Plumbing Forum

Instructions

  • You must be a registered member and logged in to post messages on our forums.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review the contents and make changes.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • It is illegal to post copyrighted material without the owner's consent.
  • HTML codes are allowed in the message field only.
  • No advertising is allowed in any of the forums.
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.



 
Click here to learn more about in-text links on this page.