Go Back   InterNACHI Inspection Forum > >

Notices

Plumbing Inspections Contains discussions about plumbing.

Reply
 
Thread Tools
  #1  
Old 9/19/18, 8:39 PM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Question Water Pressure Measurement Location

I always measure water pressure at an outside faucet. Recently I reported high pressure on new construction. I received an email from the buyer that said:

"The plumber came to the house and measured water pressure at the cloth washer intake and was 75 psi. When I told him that you measured over 100 psi at the outdoor faucet, he said that you cannot do it at that point because outdoor faucets must be anti-siphon valves per code (to avoid sucking dirty water from a water hose in case of a system pressure drop). He added that home inspectors keep taking pressure readings at outdoor valves and that it doesn't work in new construction houses."

I call BS. What say you?



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
Need a home inspection in Vermont? Check out InterNACHI's listing of Vermont certified home inspectors. Or, find a home inspector anywhere in the world with our inspection search engine.
  #2  
Old 9/19/18, 8:51 PM
Dave Fetty, CMI's Avatar
Dave Fetty, CMI Dave Fetty, CMI is online now
Certified Master Inspector ®
 
Join Date: Feb 2014
Location: Naples all SWFL
Posts: 11,524
Default Re: Water Pressure Measurement Location

BS... pressure subject to change on a constant basis... pressure too high was measured at time of inspection.




Dave Fetty Certified Master Inspector
Florida Home Inspection And Property Services LLC
www.FHIAPS.COM
www.NaplesBestInspector.com
www.FortMyersInspector.com
Naples, Marco Island, Ft. Myers, Bonita Springs, Estero, Cape Coral
Dfetty@FHIAPS.COM
http://https://www.facebook.com/pages/Flori...2450912?ref=hl
Florida Radon Measurement Technician R2547
(239)339-7380
Reply With Quote
  #3  
Old 9/19/18, 8:57 PM
Larry Kage, CMI's Avatar
Larry Kage, CMI Larry Kage, CMI is offline
Certified Master Inspector ®
 
Join Date: Jul 2004
Location: NW, MI
Posts: 17,917
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by sfetty View Post
BS... pressure subject to change on a constant basis... pressure too high was measured at time of inspection.
Agree...BS...^^^^^




Awards Committee Officer
SUBMIT YOUR AWARD NOMINATIONS HERE:
http://co.nachi.org/inachiawards/

The InterNACHI Awards Committee is the final authority of the issuance of any award the committee offers and any rules interpretation updates.
____________________________________________

Larry Kage, CMI Lifetime Member
State Licensed Builder since 1973
InterNACHI Lifetime Member
~retired~

The above post represents my personal opinion.
Reply With Quote
  #4  
Old 9/19/18, 9:20 PM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Default Re: Water Pressure Measurement Location

Undoubtedly the front faucet branches off from the service pipe before the PR valve. Plumber is on crack.



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
  #5  
Old 9/19/18, 10:05 PM
Randy Mayo, P.E.'s Avatar
Randy Mayo, P.E. Randy Mayo, P.E. is online now
Certified Professional Inspector (CPI) ®
 
Join Date: May 2006
Location: Rolla, MO
Posts: 1,462
Default Re: Water Pressure Measurement Location

Joe,
Static water pressure is the same at all locations, with two exceptions:

1. Once someone turns on a faucet within the plumbing system you are no longer testing static pressure, the pressure gauge will go down. (If the house is on a private well, turning on a faucet my kick on the well pump raising the pressure)

2. If the house has a pressure regulator some plumbers will plumb the outside faucets before the regulator giving the outside faucets greater pressure than the inside faucets.




Randy Mayo, P.E.
573-201-8162
www.rlmengineers.com
Reply With Quote
  #6  
Old 9/19/18, 11:49 PM
Larry Kage, CMI's Avatar
Larry Kage, CMI Larry Kage, CMI is offline
Certified Master Inspector ®
 
Join Date: Jul 2004
Location: NW, MI
Posts: 17,917
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by rmayo View Post
Joe,
Static water pressure is the same at all locations, with two exceptions:

1. Once someone turns on a faucet within the plumbing system you are no longer testing static pressure, the pressure gauge will go down. (If the house is on a private well, turning on a faucet my kick on the well pump raising the pressure)

2. If the house has a pressure regulator some plumbers will plumb the outside faucets before the regulator giving the outside faucets greater pressure than the inside faucets.
Must be a regional thing. I've never seen that.

Learn something new every day.

Thanks, Randy!




Awards Committee Officer
SUBMIT YOUR AWARD NOMINATIONS HERE:
http://co.nachi.org/inachiawards/

The InterNACHI Awards Committee is the final authority of the issuance of any award the committee offers and any rules interpretation updates.
____________________________________________

Larry Kage, CMI Lifetime Member
State Licensed Builder since 1973
InterNACHI Lifetime Member
~retired~

The above post represents my personal opinion.
Reply With Quote
  #7  
Old 9/20/18, 12:55 AM
Stephen W. Stanczyk's Avatar
Stephen W. Stanczyk Stephen W. Stanczyk is online now
Certified Professional Inspector (CPI)
 
Join Date: Dec 2005
Location: Kapowsin, WA
Posts: 10,494
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by rmayo View Post
If the house has a pressure regulator some plumbers will plumb the outside faucets before the regulator giving the outside faucets greater pressure than the inside faucets.
Exactly how my house in Santa Barbara is done. Nice 100 psi for hoses and sprinkler system and 65 for interior.




Stephen Stanczyk
Washington State Licensed Home Inspector # 221
President, Washington Association of Property Inspectors (WAPI)

RETIRED


Pierce County -Thurston County - King County - Kitsap County
Reply With Quote
  #8  
Old 9/20/18, 9:31 AM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by rmayo View Post
Joe,
Static water pressure is the same at all locations, with two exceptions:

1. Once someone turns on a faucet within the plumbing system you are no longer testing static pressure, the pressure gauge will go down. (If the house is on a private well, turning on a faucet my kick on the well pump raising the pressure)

2. If the house has a pressure regulator some plumbers will plumb the outside faucets before the regulator giving the outside faucets greater pressure than the inside faucets.
Sure. The plumber was saying that you can't check the pressure at an anti-siphon valve. That's what I called BS on.



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
  #9  
Old 9/20/18, 9:32 AM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by sstanczyk View Post
Exactly how my house in Santa Barbara is done. Nice 100 psi for hoses and sprinkler system and 65 for interior.
They do it to save piping. It's a code violation. The main shutoff valve doesn't shut off all water and the pressure at distribution piping is > 80 PSI.



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
  #10  
Old 9/20/18, 1:38 PM
Stephen W. Stanczyk's Avatar
Stephen W. Stanczyk Stephen W. Stanczyk is online now
Certified Professional Inspector (CPI)
 
Join Date: Dec 2005
Location: Kapowsin, WA
Posts: 10,494
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by jfunderburk View Post
They do it to save piping. It's a code violation. The main shutoff valve doesn't shut off all water and the pressure at distribution piping is > 80 PSI.
From the UPC / California Plumbing Code that is used:


Where static water pressure in the water supply piping is exceeding 80 psi (552 kPa), an approved-type pressure regulator preceded by an adequate strainer shall be installed and the static pressure reduced to 80 psi (552 kPa) or less. Pressure regulator(s) equal to or exceeding 1 1/2 inches (40mm) shall not require a strainer. Such regulator(s) shall control the pressure to water outlets in the building unless otherwise approved by the Authority Having Jurisdiction.



My front exterior hose bib and sprinkler system backflows / distribution are installed on the exterior, prior to the water line entering the building. They are within code. My rear hose bibs come off the main line after it enters the building and are covered by the pressure regulator.




Stephen Stanczyk
Washington State Licensed Home Inspector # 221
President, Washington Association of Property Inspectors (WAPI)

RETIRED


Pierce County -Thurston County - King County - Kitsap County
Reply With Quote
  #11  
Old 9/20/18, 3:14 PM
Chuck Evans's Avatar
Chuck Evans Chuck Evans is online now
Certified Master Inspector ®
 
Join Date: Sep 2006
Location: Stagecoach, TX
Posts: 10,450
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by jfunderburk View Post
Sure. The plumber was saying that you can't check the pressure at an anti-siphon valve. That's what I called BS on.
Don't expect the builder to understand and quote the plumber any more accurately than they quote what you say.

Builder probably doesn't know a pressure regulator from an anti-siphon from a mixing valve.



Chuck Evans (TREC #7657)
Level III Infraspection Institute Certified Infrared Thermographer (#8402)
HomeCert Houston Home Inspections & Thermal Inspections Find us on Facebook
The Woodlands Home Inspections
Magnolia TX Home Inspections & Thermography


Houston, TX
_______________________
Awards Committee Member

SUBMIT YOUR AWARD NOMINATIONS HERE

The InterNACHI Awards Committee is the final authority of issuance of any award the committee offers.
Reply With Quote
  #12  
Old 9/20/18, 5:56 PM
William B. Ogletree's Avatar
William B. Ogletree William B. Ogletree is online now
Certified Professional Inspector (CPI) ®
 
Join Date: Apr 2017
Location: Grapevine, Texas
Posts: 1,174
Default Re: Water Pressure Measurement Location

Mulling all this over and having the following thoughts:

I can see no way that an anti-siphon device would give an erroneously high reading.

I can see that it would be possible for hose bibs to be under a different amount of pressure than other plumbing if the other plumbing is subject to regulation.

I can also imagine you would have slightly lower water pressure on the second floor than on the first floor, and that how much would depend on the height of the tower supplying the water.




William Bruce Ogletree
Ogletree Inspection Services

214-287-4630
www.ogletreehi.com
ogletreehi@gmail.com
Reply With Quote
  #13  
Old 9/20/18, 10:03 PM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Default Re: Water Pressure Measurement Location

According to the 2015 IRC, the exterior faucet is part of the water distribution system and its pressure shall not be higher than 80 psi. There is no exclusion for fixtures not "in the building" in the IRC.

Water Pressure Measurement Location-capture2-jpg



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
Need a home inspection in Vermont? Check out InterNACHI's listing of Vermont certified home inspectors. Or, find a home inspector anywhere in the world with our inspection search engine.
  #14  
Old 9/20/18, 11:43 PM
Stephen W. Stanczyk's Avatar
Stephen W. Stanczyk Stephen W. Stanczyk is online now
Certified Professional Inspector (CPI)
 
Join Date: Dec 2005
Location: Kapowsin, WA
Posts: 10,494
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by jfunderburk View Post
According to the 2015 IRC, the exterior faucet is part of the water distribution system and its pressure shall not be higher than 80 psi. There is no exclusion for fixtures not "in the building" in the IRC.

Attachment 203626
The vast majority of exterior faucets are from the main line distribution after it enters the home. Mine are not. Also, the IRC is not applicable for my home. I posted the codes in use so your's mean nothing.




Stephen Stanczyk
Washington State Licensed Home Inspector # 221
President, Washington Association of Property Inspectors (WAPI)

RETIRED


Pierce County -Thurston County - King County - Kitsap County
Reply With Quote
  #15  
Old 9/21/18, 12:28 AM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is online now
Certified Master Inspector
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 10,778
Send a message via Yahoo to jfunderburk
Default Re: Water Pressure Measurement Location

Quote:
Originally Posted by sstanczyk View Post
The vast majority of exterior faucets are from the main line distribution after it enters the home. Mine are not. Also, the IRC is not applicable for my home. I posted the codes in use so your's mean nothing.
I posted the IRC for other's edification.



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CBO, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
Angie's List Super Award Winner 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010.
Ph: 704-351-1776
www.aohomeinspection.com

Reply With Quote
Reply

Thread Tools

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


All times are GMT -4. The time now is 7:51 PM.
no new posts