ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
600 KW 120/208 3 Phase Y protection
by SteveFehr. 07/23/17 09:46 AM
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,262 Are you busy
174,702 Re: Forum
167,097 Need opinion
Who's Online Now
0 registered members (), 63 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#117196 - 05/28/04 07:05 PM Asbestos Pipe  
Admin  Offline

Administrator
Member
Joined: Oct 2000
Posts: 3,447
NY, USA
Quote
On the subject of asbestos, this is another hazard that still exists in a LOT of underground installations. The picture may let someone know if they find this while digging that they are dealing with a hazard.

George Corron
[Linked Image]

(also posted in Photos Submitted area)


Tools for Electricians:

#117197 - 05/30/04 10:10 AM Re: Asbestos Pipe  
DougW  Offline
Member
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
IIRC, that stuff is called "Transite". Used for years for sewer piping.

Makes sense that somebody would use it for ductwork. Wish I had my 'American Electrician's Handbook' at work today!


#117198 - 05/30/04 02:43 PM Re: Asbestos Pipe  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
“Transite” was Johns-Manville’s trademark for asbestos-cement pipe. Miles of smaller sizes [3-4 inch?] were made for telecomm duct. The recipe for the slurry to mold into finished pipe was kind of old and a bit secretive, like that of a sixth-generation winemaker.

There was a little old lady there that made raceway sweeps {long-radius bends} to order, and she would lay them out in one spot on the plant floor where they were least likely to be destroyed by rolling stock {forklifts.}

Another major US producer was CertainTeed.

[Aside — J-M was the first plant I worked that had 277V lighting. The plant electrical system was a phenomenally precise copy of Donald Beeman's 1955 Industrial Power Systems Handbook.]




[This message has been edited by Bjarney (edited 05-30-2004).]


#117199 - 05/30/04 04:18 PM Re: Asbestos Pipe  
DougW  Offline
Member
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
I live a few miles south of the old Johns-Mansville plant on the shores of Lake Michigan.

I remember sneaking around the fence one evening in college, and seeing this pit, (seemingly several hundred feet deep)into which the semi-trucks were off-loading asbestos.

We got the heck outta there pronto.


#117200 - 05/30/04 06:56 PM Re: Asbestos Pipe  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
My stint was in NorCal. Out back was a pond shored with miles of Transite scrap. The water had a distinctive spruce-green tint, apparently from soluble magnesium(?) salts.




[This message has been edited by Bjarney (edited 05-30-2004).]


#117201 - 05/30/04 07:45 PM Re: Asbestos Pipe  
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
I've put miles of that stuff in in the 4-5" size for high voltage ductbanks. We used to cut it with skilsaws [Linked Image] .

One ugly story on myself, one day at the Pentagon, they called me and said they'd hit something, wanted me to see it and give a ruling. "We think it may be asbestos" they said. I got there to see about 8 of these transites laying there..... I stopped a second, got my bearings, and said "yup, it's asbestos" "How can you be sure" they ask...... "cause I put it in about 74 was my reply" hee, hee, that one tried to kill me twice.

I was wondering where I could get a pic of this stuff to go with my MV cable one I sent a few weeks back. One of the guys that works for me (in the plumbing shop) stopped by my office and said "Hey George, is this what I think it is?" I had my pic, any yes, that was being used as a sewer pipe. He had been doing a side job the weekend before, and had to cut that out of the way to install new PVC. Well, now he knows what transite looks like.

Thought I'd pass that along so you younger guys would know what it looks like, if you see it, go around.



Member Spotlight
richard
richard
L.I. New York
Posts: 95
Joined: August 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.013s Queries: 14 (0.003s) Memory: 0.7779 MB (Peak: 0.9236 MB) Zlib enabled. Server Time: 2017-07-24 02:42:30 UTC