Core Drilling and Floor Drain Question

I have been tasked many times over the years with installing additional floor drains where core drilling is involved. I have done this many different ways with mixed success. I am not a plumber, i am a Facilities Manager with 20 years experience and have capable staff and decent equipment, we do a lot of plumbing. Here is my question:

What is the proper way to install a floor drain in a commercial setting where the floor has to be cored? Do you core a 4" hole followed by a 6" down a couple inches, chip out the concrete and set the drain? What is the right material to set it in? What is the best drain to use?

Any help is greatly appreciated!

Brian

Coring twice is nice.
I use a cast drain in that situation with an adjustable top.
I've let the flooring installers worry about the the back fill on the drain. Maybe someone here does flooring and can answer that.

Not sure if this will help or not, but seemed pretty good to me. Not sure on the core drilling part though.
http://www.plumbingsupply.com/adjustable-drainage-products-install.html

Drilling a lorge hole for the drain's flange, and a smaller one for the drain pipe is the only way to provide support for it. But the larger hole is usually drilled first, then the smaller one. This gives better control of the water into the lower level.

Core drilling for floor drains

Well, for someone who doesn't know about core drilling you hit it right on the head.
For recessed floor drains that is exactly how you would proceed. We often have core drilled holes of this nature to set something back into the concrete like it was made to go there.
This also works great for grates and floor lighting.

But first drill the large hole so you have material (the concrete floor) to work with as far as getting the recess as flat as you can, this is where the chipping hammer comes in. Once you got it the depth you want then drill the smaller hole for the piping.

We are professional core drillers in North Carolina

Charlotte core drill
http://www.charlottenccoredrilling.info

I find it interesting that random professionals come out of the wood work, create an account, and advertise for themselves like this...

dlarrivee said:

I find it interesting that random professionals come out of the wood work, create an account, and advertise for themselves like this...

Click to expand...

I couldn't agree more...

(I'm actually here reading some articles and came across this thread. Thought I would register and hang out for awhile)

Like "how"?

dlarrivee said:

I find it interesting that random professionals come out of the wood work, create an account, and advertise for themselves like this...

Click to expand...

I find it interesting that people sign up for accounts to respond to 7 year old threads to say this: I really thought he was just listing his business details to show that he is knowledgeable, there are not many large SC towns near Charlotte NC, and the OP mentioned having tools and skills. So it would be pretty unlikely that his post would lead to a job.