Building steps

Posted by fftt on May 19, 2009, 9:15 pm

> > wrote:

> > >I would like a link to that! I was told non magnetic stainless doesnt
> > >rust.

> > I'll see what I can dig up. This is 'common knowledge' among boat
> > builders, but not others. Problem being that the stainless looks
> > really good on the exposed surfaces, then when you try to remove it,
> > you find a 'ton' of rust on the burried parts. You could also try
> > searching various marine sites too, I'm sure you will find it.
> > FWIW, I didn't believe it when I was told first about the problem,
> > then managed to see it as I did work on boats.

> Oxygen is inseparable from oxidation (rusting). =A0I think it's more
> likely that moisture was getting into those hidden areas and staying
> there longer.
> R

........ Oxygen is inseparable from oxidation (rusting).

yup

..... I think it's more likely that moisture was getting into those
hidden areas and staying
there longer.

yup, again

first of all the term "stainless steel" though popular & widely used
is not the "correct" term for the material under discussion

the more correct terminology is "corrosion resistant"

btw all "stainless steels" will rust / corrode under the "right"
conditions

another little know fact, so called "non-magnetic", 18-8 stainless
steels (typically 300 series) can, when "worked" by certain processes,
in fact, exhibit magnetic properties

cheers
Bob

Posted by TheRebarGuy on May 19, 2009, 10:45 pm

>> I used the words tendency, would, tend to - there is nothing there
>> that says in all occasions all steel rusts. ?I also put the rusting
>> issue in second place in my short list of reasons. ?You made a massive
>> assumption that I was somehow referring to all situations and you got
>> snarky about it.
>> Your two comments;
>> "How are they going to get bigger while they're encased in concrete?"
>> and
>> "Oh, for heaven's sake. Haven't you ever heard of rebar?"
>> imply that you equated an engine block dumped in a hole in the ground,
>> with engineered and correctly installed reinforced concrete. ?I took
>> exception to that.
>> I appreciate that you think the OP - a guy who wants to toss a
>> considerable quantity of scrap iron into a set of steps as filler - as
>> being so clued in to the correct amount of concrete coverage, and
>> would know how to suspend an engine block to insure that amount of
>> coverage. ?I have no such illusions.
>> R

>ideally all rebar should be non magnetic stainless, which never

rusts...........

I'm late to the party but if they are really concerned about corrosion in
the rebar maybe they should look into getting some of the (fairly) new stuff
called MMFX rebar. It is five times as corrosion-resistant and up to three
times as strong as conventional steel. He could use less steel and it would
last longer than just about any other comparable product. Ameristeel is
advertising a product called "Z-Bar" that is better (per their claim, not
mine) than just plain epoxy coated bars, but I have not been involved with
any project that used this material, so I can't say anything one way or the
other about it.

Posted by creative1985@gmail.com on May 20, 2009, 10:48 pm

> >> I used the words tendency, would, tend to - there is nothing there
> >> that says in all occasions all steel rusts. ?I also put the rusting
> >> issue in second place in my short list of reasons. ?You made a massive
> >> assumption that I was somehow referring to all situations and you got
> >> snarky about it.
> >> Your two comments;
> >> "How are they going to get bigger while they're encased in concrete?"
> >> and
> >> "Oh, for heaven's sake. Haven't you ever heard of rebar?"
> >> imply that you equated an engine block dumped in a hole in the ground,
> >> with engineered and correctly installed reinforced concrete. ?I took
> >> exception to that.
> >> I appreciate that you think the OP - a guy who wants to toss a
> >> considerable quantity of scrap iron into a set of steps as filler - as
> >> being so clued in to the correct amount of concrete coverage, and
> >> would know how to suspend an engine block to insure that amount of
> >> coverage. ?I have no such illusions.
> >> R

> >ideally all rebar should be non magnetic stainless, which never

> rusts...........
> I'm late to the party but if they are really concerned about corrosion in
> the rebar maybe they should look into getting some of the (fairly) new st=

uff

> called MMFX rebar. It is five times as corrosion-resistant and up to thre=

> times as strong as conventional steel. He could use less steel and it wou=

> last longer than just about any other comparable product. Ameristeel is
> advertising a product called "Z-Bar" that is better (per their claim, not
> mine) than just plain epoxy coated bars, but I have not =A0been involved =

with

> any project that used this material, so I can't say anything one way or t=

> other about it.

Whats the green rebar I saw a while back, was it a coating?

Posted by RicodJour on May 20, 2009, 11:27 pm

wrote:

> Whats the green rebar I saw a while back, was it a coating?

Yep. It's an epoxy coating. It's used in construction where the
rebar will be subjected to harsh conditions and rusting is an issue.

R

Posted by RicodJour on May 21, 2009, 5:50 pm

> If rebar is supposed to be encased inside of the concrete and not
> exposed to the elements. =A0Isn't all rebar more or less exposed to the
> SAME conditions (ie being embedded in concrete)? =A0Wouldn't almost
> anything that would bother the rebar also bother the concrete?
> Wouldn't a better solution be to protect the concrete?

The main culprits in attacking the rebar, salt and water, don't have
nearly as much effect on concrete. Protecting the concrete would
require protecting large areas, and periodic reapplication of whatever
it was you were using to protect it. The epoxy coated rebar has a
much smaller area (in general) and it's a one shot deal.

Your bones are encased in meat, but you can still break your bones
even through the meat. That's why Wolverine has an admantium skeleton
- I'm amazed I have to tell you this!!!! ;)

R

R

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Building steps - Page 6