A little on the Commercial side of things.

[Marcel R. Cyr]

Pictured below are granite steps that are peeling and ugly after only 10 years of use.
Replacement cost= $16,000.
Found the cause and solution to salvage.

Attachment 12577 Attachment 12578 Attachment 12579 Attachment 12580

In the third picture, there is a two foot section of a tread that was done for a sample.

Marcel

[rcooke]

Originally Posted by mcyr

Pictured below are granite steps that are peeling and ugly after only 10 years of use.
Replacement cost= $16,000.
Found the cause and solution to salvage.

Attachment 12577 Attachment 12578 Attachment 12579 Attachment 12580

In the third picture, there is a two foot section of a tread that was done for a sample.

Marcel

Thanks Marcel do you think this repair will last .
How was the repair on #3 done ?
what was the cause of these steps not lasting ,Salt?

[Marcel R. Cyr]

Need the right tools Roy.

By using various bushing tools with your pneumatic hammer, it is possible to rough out, finish carve and texture many types of stone. This valuable stoneworking technique not only saves time, but also produces a wider variety of surface finishes than is possible with conventional hand tools.
Some important things to remember:
Do not hold onto the bushing chisel. Hold the pneumatic tool perpendicular to the stone so the chisel moves freely, bouncing and spinning over the surface in a random pattern (called "dancing").

The 4-point chisel (above left) is ideal for roughing out your work and will leave a course texture. The 9-point chisel (center above) removes less material but leaves a finer surface. The cup chisel (above right) will not dig and is excellent for curved areas; use it to achieve a smoother texture prior to final finishing.
In my case, I used a diamond tip bushing head on a Hilti electric hammer drill set on drilling and hammer mode. This spins the bushing head around instead of direct impact.

The cause of the de-layering was initially due to the process of over thermal.

Granite like many other stones, undergo a process of smooth glossy finish, a honed finish where the stone is smooth and not glossy, and the thermal finish which is used for steps and what not. This process is done with an external flame and roughens the surface to give it a texture.
During this process, if the external heat applied is to hot, it will layer the stone as shown in my previous post.

Bushing down the stone with the right head, can bring the stone back to it's original state and harder layer of the stone matrix.

Hope this helps a few.

Marcel

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[rcooke]

You are the MAN thanks Marcel , Much appreciated ......
....
Seen it done but had no idea what was happening.

[Marcel R. Cyr]

Installing an underground propane tank.

Attachment 12584Attachment 12585Attachment 12586

What is that little bag on the ground?

What is that man doing with that little wire on the tank?

Key words; Cathodic, and Cad-----

Hope some like.

Marcel

[Peter C. Russell]

Marcel, will that tank be insulated before being buried?

[Marcel R. Cyr]

Was a long winter putting this one together.

Attachment 12588Last week

Attachment 12589Last week

Attachment 12590 Last year

Attachment 12591 Last week

Marcel

[Marcel R. Cyr]

Originally Posted by prussell

Marcel, will that tank be insulated before being buried?

No Peter; I see very few tanks here that get insulated in or out of the ground.
Preference would be in the ground so they do not frost up as much and affect the gas pressure.

Their will be very little draw on this 1000 gal. tank and should not be a problem.
Grills for College Kids. Oh and don't forget the Pizza Oven. ha. ha.

Marcel

[Peter C. Russell]

Marcel, the reason I asked was I see many commercial tanks insulated with spray foam, Icynene, I believe to control moisture.

[Marcel R. Cyr]

Originally Posted by prussell

Marcel, the reason I asked was I see many commercial tanks insulated with spray foam, Icynene, I believe to control moisture.

Frost from a heavy draw causes loss in pressure.

Moisture causes rust, that is why that little bag in the picture is there.

Marcel

[Peter C. Russell]

I was wondering about that, how does it work?

[Marcel R. Cyr]

Originally Posted by prussell

I was wondering about that, how does it work?

Check this out Peter, that should answer your question.

http://www.anodesystems.com/pro1.html

Marcel

[Peter C. Russell]

Thanks Marcel, very good info.

The anode seems somewhat technical but very simple at the same time.

I do not have very much experience with underground tanks and very rarely see the so you info. is helpful. Thanks again

[phinsperger]

Originally Posted by mcyr

What is that little bag on the ground?

What is that man doing with that little wire on the tank?

Key words; Cathodic, and Cad-----

...uhmm....CATHATER!

[Marcel R. Cyr]

Originally Posted by phinsperger

...uhmm....CATHATER!

Funny Paul

The word was CadWeld or another term would be Thermite Weld.

Marcel