sorry there is the pic

Ani T-

The solution to your situation will depend on the thickness
of the stone you are using, and the overall design that you'll
be using for the supports.

MIA Specs call for 2CM stone (3/4" thick) to have no more
than 6" of unsupported span. 3CM stone (1 1/4" thick) to have
no more than 10" of unsupported span.

What this means to you is this:
Let's say you want to duplicate the 16" overhang that you are used to...
If you use 2CM stone with a 5/8" plywood subtop, you'll need
to have 10" deep corbels.
If you use 3CM stone, you won't need any plywood subtop, and
the corbels that you'll need to use will only need to be 6" deep.

An optional "plan B" would be to use 1" x 1" box steel ILO
the corbels, but then you'd need to extend your laminations
to hide the box steel.

Your situation is not at all out of the ordinary, and there
are a number of solutions to your issue. Hopefully, you have
a Fabricator that is "dialed in" to these options, so you'll
have a great looking finished product.

hope that helps you

kevin

Kevin M. Padden MIA SFA
Fabricator, Trainer & Consultant to the Natural Stone Industry
www.azschoolofrock.com

Kevin,
thankyou for the detailed reply.
From what I understand of your post, I dont NEED a ponywall if the granite is well supported by corbels - of the right size and material ?

I dont yet have a fabricator. The problem is that our contractor is going to hang the cabinets himself and has been reluctant to do anything other than what we previously had. I dont think I can get another contractor at this point since this is an insurance issue.
One solution that I read about was to have a pony wall- behind the cabinets, but its out of question because he wont build it.

I can get someone else to do it after he has hung the cabinets but I need to be sure what to do.

Thanks
Ani

Hi Kevin,

This is really helpful information to me also. Could you also comment on how close together these 6" corbels need to be? For instance, if I had a 8'-4" long 3cm soapstone overhang that is 15" deep, how many corbels would I need across that span?

Thanks so much! Jaymie

I don't quite understand if you want a raised 16" overhang like the one in the picture you posted or if you want one that is at the same level as your island. It looks like the one in the picture has some kind of stainless box beam supporting it which is how they get away with the span. Or maybe it is some other kind of support covered by a shiny metal.

If you want a counter level overhang - one that is an extension of the counter material, another option is to have a plywood subtop with steel bars embedded in it to support the granite overhang. We have a 15" overhang supported that way. Here is the subtop with the steel before the granite went on.

A closer look:

Here is what it looks with the granite on - this is 2 cm granite with a laminated edge that covers the plywood subtop. If one had 2 cm without the laminated edge or 3 cm one might want a bit of molding to cover the plywood subtop edge:

I'm not really sure what you have in mind, but does this help?

http://www.fantasysteel.com/bracket/bar-brackets.html