Using rebar as earthing.

[Geoffsd]

The reg. (542.2.3 (v))does say the rebar should be welded.

Does that mean it can only be used if it is planned and intended to be used as an electrode?

 

[telectrix]

not too well up on the subject of rebar. more my style would be FUBAR. :shuriken:

 

[mayfair]

Someone pinched my job LOL.

 

[Engineer54]

The reg. (542.2.3 (v))does say the rebar should be welded.

Does that mean it can only be used if it is planned and intended to be used as an electrode?

I've yet too see any foundation slab re-bar installation that was welded!! Probably nor has the author's of that Reg, and why it states ''Should'' and not ''Must''!! ...lol

 

[Geoffsd]

The reg. doesn't say 'should' - that was me, sorry.


542.2.3 Suitable earth electrodes shall be used...

(v) Welded metal reinforcement of concrete (except pre-stressed concrete) embedded in the ground.

 

[La Poste]

How would you connect the concrete floor to the MET?

How would you make a nice strong joint?

I guess this method would also bond the floor very well.

Great if there was livestock present, it would stop the old Udders from jittering.

 

[Engineer54]

The reg. doesn't say 'should' - that was me, sorry.


542.2.3 Suitable earth electrodes shall be used...

(v) Welded metal reinforcement of concrete (except pre-stressed concrete) embedded in the ground.

In that case take the ''SHALL'' with a very large pinch of salt then!!! I've never seen foundation re-bars welded in the 40 years i've been in the industry... lol!!! They will all be tied together with thin steel wire, like they are everywhere else in the world!!!

 

[Rampage]

Usually tied together with stainless steel wire.

As for connecting to it: drill into the top of a piece purposely left sticking out, tap a thread then connect with a ring crimp and a bolt, cover with grease to stop rusting. Is how I'd do it.

 

[Engineer54]

Usually tied together with stainless steel wire.

As for connecting to it: drill into the top of a piece purposely left sticking out, tap a thread then connect with a ring crimp and a bolt, cover with grease to stop rusting. Is how I'd do it.

That's not the correct way of connecting to a Ufer earth. There are made for purpose clamps, (see Furse website) if you are using clamps rather than the preferred welded connection (exothermic or brazing) A nice covering of amalgamating tape seals and finishes the job...

 

[Rampage]

Although American this is quite interesting reading:

http://www.tchams.org/FILES/Grounding.pdf

(page 17 onwards)

 

[Knobhead]

Although American this is quite interesting reading:

http://www.tchams.org/FILES/Grounding.pdf

Not what you would term "light" reading!

It explains some of the things I've been doing since starting in the industry.

Also an appology to Herb Ufer for keeping on spelling his name wrong.

 

[mayfair]

Good one to read in the loo. Interesting .

Not what you would term "light" reading!

It explains some of the things I've been doing since starting in the industry.

Also an appology to Herb Ufer for keeping on spelling his name wrong.