Go Back   InterNACHI Inspection Forum > >

Notices

Commercial Inspections / CCPIA Contains discussions about commercial inspections and the International Standards of Practice for Inspecting Commercial Properties.

Reply
 
Thread Tools
  #1  
Old 4/7/10, 6:50 PM
Nick Gromicko, CMI's Avatar
Nick Gromicko, CMI Nick Gromicko, CMI is online now
Active Poster
 
Join Date: Aug 2002
Location: Nederland, Colorado
Posts: 64,499
Default Detecting Corrosion in Steel Encased in Concrete.

Detecting Corrosion in Steel Encased in Concrete.
Reply With Quote
Need a home inspection in Alabama? Check out InterNACHI's listing of Alabama certified home inspectors. Or, find a home inspector anywhere in the world with our inspection search engine.
  #2  
Old 4/7/10, 8:46 PM
Scott Gilligan, CMI's Avatar
Scott Gilligan, CMI Scott Gilligan, CMI is offline
Certified Master Inspector ®
 
Join Date: May 2007
Location: Philadelphia, PA
Posts: 1,862
Send a message via AIM to sgilligan1 Send a message via MSN to sgilligan1 Send a message via Yahoo to sgilligan1
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Change the title to Detecting Corrosion in Concrete Encased Steel. There are to many "in's" in the title and it does not read well.
Reply With Quote
  #3  
Old 4/8/10, 11:39 AM
Kate Tarasenko's Avatar
Kate Tarasenko Kate Tarasenko is offline
InterNACHI Staff
 
Join Date: Jul 2009
Posts: 669
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Thanks, Scott!



Cheers,
Kate

Crimea River, LLC
InterNACHI® Editor-in-Chief

kate@internachi.org
Reply With Quote
  #4  
Old 4/8/10, 11:46 AM
Nick Gromicko, CMI's Avatar
Nick Gromicko, CMI Nick Gromicko, CMI is online now
Active Poster
 
Join Date: Aug 2002
Location: Nederland, Colorado
Posts: 64,499
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Done.
Reply With Quote
  #5  
Old 4/8/10, 1:14 PM
Bob Elliott, 450.0002662's Avatar
Bob Elliott, 450.0002662 Bob Elliott, 450.0002662 is offline
Certified Professional Inspector (CPI) ®
 
Join Date: Aug 2006
Location: Chicago
Posts: 37,741
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Interesting article ,but I must admit that I am left feeling a little lost.
I was just taught how PH levels of the encasing concrete effect the steel rebar lifespan but have been left with a wondering as to how it can apply to Home Inspection or Commercial Inspection for that matter.

Does this new knowledge apply in any way to Foundations,lintels,retaining walls,etc.?

A extra paragraph or two on how we can use this article to benefit our client would help.

My impression from reading this is to gloss over and forget, by delegating this to Structural Engineer territory.

Would love to see a few good illustrations to keep focus also.
Reply With Quote
  #6  
Old 4/8/10, 1:39 PM
Jeffrey R. Jonas's Avatar
Jeffrey R. Jonas Jeffrey R. Jonas is online now
Certified Professional Inspector (CPI) ®
 
Join Date: Feb 2007
Location: Minnesota & Northern Iowa
Posts: 31,209
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Quote:
Originally Posted by belliott View Post
Interesting article ,but I must admit that I am left feeling a little lost.
I was just taught how PH levels of the encasing concrete effect the steel rebar lifespan but have been left with a wondering as to how it can apply to Home Inspection or Commercial Inspection for that matter.

Does this new knowledge apply in any way to Foundations,lintels,retaining walls,etc.?

A extra paragraph or two on how we can use this article to benefit our client would help.

My impression from reading this is to gloss over and forget, by delegating this to Structural Engineer territory.

Would love to see a few good illustrations to keep focus also.
Bob, (I hope you're sitting down)...

Good post. I actually 'got' what you were trying to say for once. I agree with you 100% !!!

Jeff



Jeffrey R. Jonas
Owatonna, Minnesota



"I am not a teacher, but an awakener."
- Robert Frost, American poet (1874-1963).

"We Respect Our Clients Right to Privacy"

Reply With Quote
  #7  
Old 4/8/10, 2:19 PM
Doug Edwards Doug Edwards is offline
InterNACHI Member
 
Join Date: Apr 2004
Posts: 5,091
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Rusting metal, be it rebar, lintels, etc. expands as it oxidizes often causing the concrete it is encased causing it to spall or pop off the facing of the concrete. Here are a couple of examples on a beach front I did some years ago. I have also seen some metal lintels that have separated the bricks on either side of the garage door or windows do the same thing and open mortar joints.






Last edited by dedwards; 2/17/11 at 12:04 PM..
Reply With Quote
  #8  
Old 4/8/10, 2:57 PM
Bob Elliott, 450.0002662's Avatar
Bob Elliott, 450.0002662 Bob Elliott, 450.0002662 is offline
Certified Professional Inspector (CPI) ®
 
Join Date: Aug 2006
Location: Chicago
Posts: 37,741
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Quote:
Originally Posted by jjonas View Post
Bob, (I hope you're sitting down)...

Good post. I actually 'got' what you were trying to say for once. I agree with you 100% !!!

Jeff
Funny ,guy.
Reply With Quote
  #9  
Old 4/8/10, 3:02 PM
Bob Elliott, 450.0002662's Avatar
Bob Elliott, 450.0002662 Bob Elliott, 450.0002662 is offline
Certified Professional Inspector (CPI) ®
 
Join Date: Aug 2006
Location: Chicago
Posts: 37,741
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Quote:
Originally Posted by dedwards View Post
Rusting metal, be it rebar, lintels, etc. expands as it oxidizes often causing the concrete it is encased causing it to spalt or pop off the facing of the concrete. Here are a couple of examples on a beach front I did some years ago. I have also seen some metal lintels that have separated the bricks on either side of the garage door or windows do the same thing and open mortar joints.
Yeah,I think we all see that at times Doug,but how would that relate to concrete with a parge coat over Lintels,or foundations ,where we actually Inspect.?

I often see and have pics somewhere of rebars rusting out through concrete, but just notate and move on.
Reply With Quote
  #10  
Old 6/30/11, 3:43 AM
Muhammad Fawad Baig Muhammad Fawad Baig is offline
New User
 
Join Date: Jun 2011
Posts: 1
Please Note: Muhammad Fawad Baig is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Detecting Corrosion in Steel Encased in Concrete.

for complete article visit www.enggpedia.com
The basic problem in Reinforced concrete structures is the corrosion of steel reinforcement. The main cause of this corrosion is intrusion of water inside the RC structures. The corrosion of steel reinforcement can be judged by peculiar cracking of concrete structures.

At last stage of corrosion, the steel reinforcement becomes exposed and the extent of corrosion can be seen as rust.

Corrosion of steel reinforcement usually occurs more in externally located RC members as compared to internally located RC members.



__________________________________________________ ________________________

www.daenotes.com
Reply With Quote
  #11  
Old 8/8/18, 3:30 PM
im civil im civil is offline
New User
 
Join Date: Aug 2018
Posts: 1
Please Note: icivil is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Detecting Corrosion in Steel Encased in Concrete.

I think you should visit CivilSeek and read this article for more details about reinforced cement concrete Reinforced Cement Concrete | Advantages, Uses, Types, & Purpose.
Reply With Quote
  #12  
Old 9/24/18, 8:21 PM
Kenton Shepard, CMI's Avatar
Kenton Shepard, CMI Kenton Shepard, CMI is online now
Certified Master Inspector
 
Join Date: Aug 2004
Location: Boulder, CO
Posts: 6,654
Send a message via ICQ to kshepard
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Quote:
Originally Posted by belliott View Post
Interesting article ,but I must admit that I am left feeling a little lost.
I was just taught how PH levels of the encasing concrete effect the steel rebar lifespan but have been left with a wondering as to how it can apply to Home Inspection or Commercial Inspection for that matter.

Does this new knowledge apply in any way to Foundations,lintels,retaining walls,etc.?

A extra paragraph or two on how we can use this article to benefit our client would help.

My impression from reading this is to gloss over and forget, by delegating this to Structural Engineer territory.

Would love to see a few good illustrations to keep focus also.
I was doing a lot of research on concrete when I wrote that and it struck me as one of those things that may not be of direct benefit, but the better you understand the processes that steel, concrete, and water go through together, the greater the chances that you may pick up on something that you might otherwise have missed, or you may be better able to answer a client's questions on a concrete issue.

When you can display depth of knowledge about a subject that goes beyond that of most inspectors it tends to impress people.



Kenton Shepard, CMI Inspector/Instructor


Designer/Builder: House of Horrors 1&2
Author: InterNACHI Narrative Library

Reply With Quote
  #13  
Old 10/1/18, 10:33 PM
Dan Bowers, CMI, ACI's Avatar
Dan Bowers, CMI, ACI Dan Bowers, CMI, ACI is online now
Certified Master Inspector
 
Join Date: Oct 2003
Location: Shawnee Mission, KS
Posts: 10,246
Default Re: Detecting Corrosion in Steel Encased in Concrete.

Good information



Dan Bowers, CMI
Licensed Contractor / Builder
Certified IAQ2 Mold Inspector
Licensed HVAC Service Technician
EDI Certified Stucco / EIFS Inspector
Certified Commercial Building Inspector
iNACHI – US Member of the Year 2010
ITC / FLIR - Level I Infrared Thermographer
FHA - 203k Inspector / Compliance Inspector
ICC Code Inspector (Plmbg, Elec, Mech, Bldg)
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Post tension slab labeling rchorey Structural Inspections 36 6/15/17 8:15 PM
Steel post question sspradling Structural Inspections 45 3/8/15 10:25 PM
Moisture in slabs mcyr Structural Inspections 7 8/20/07 7:33 PM
bbbb mcyr Structural Inspections 1 8/19/07 10:26 PM
Moisture control for slab on grade in protecting floor finishes mcyr General Inspection Discussion 2 8/13/07 7:53 PM

All times are GMT -4. The time now is 9:45 AM.
no new posts