In ,
Mike typed:
On 2016-03-30, DerbyDad03 wrote:
On Wednesday, March 30, 2016 at 3:06:32 PM UTC-4, Mike wrote:
I have this brick/tile stuff that is structural for this build. The
building is 70+ years old. Home Depot has a bit that I can bore
through the brick/tile that is just a hair over 4" OD. I have a
scrap of steel pipe I want to put through the hold to reinforce the
brick/tile after I bore the hole. This steel pipe is about 4.5" OD.
I can rent the bit and drill from Home Depot to make the initial
hole, but still need to increase the hole diameter for the steel
pipe. I thought of using some sort of grinding stone to make the
hole bigger for the steel pipe. Is there a better way to make the
hole or to widen the hole for the pipe?

Once the pipe is in the hole I plan to concrete around the pipe and
fill the voids in brick/tile. Once the concrete (Sackrete Sand Mix)
hardens I'll run a 3" schedule 40 septic pipe through the steel and
spray foam the space between PVC pipe and steel pipe.

TIA

Mike

"brick/tile stuff"

You might want to be just a tad more specific so that we know what
kind
of hole saw you should be using.

For the folks that asked, here are some pictures (I hope this works)
of the brick/tile. Also, these tiles are 5" thick.

Mike

http://imgur.com/TkSLKCg

http://imgur.com/Hb475uq

http://imgur.com/2C7ZelN

I have exactly that type of terracotta masonry in all of the exterior
structural walls of a property that I own. I posted pictures of it
previously when you had a different question in the past.

I have no doubt that you can just cut the hole however you want and just put
the PVC through it without the steel pipe or anything else. There will be
no structural problem in doing it that way. On one of my exterior walls,
there used to be a large kitchen vent fan through the wall to the outside.
The hole was about 12 inches in diameter and the vent fan went through the
hole and there was no special structural support around the kitchen vent fan
hole. There was no problem at all with that in terms of structural
integrity.

You can use the hole saw that you have now or even just carefully chisel out
an opening, and then use whatever mortar etc. you choose to close up the
hole around the PVC pipe.

Again, the steel pipe is not needed for any structural purpose.

Good luck.