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-   -   Cutting hole in basement wall (http://www.diychatroom.com/f15/cutting-hole-basement-wall-46479/)

bladesj 06-12-2009 12:21 PM

Cutting hole in basement wall
 
Looking for suggestions and techniques. I will be doing some remodeling and relocating a bathroom to an add-on of a house. The plumbing will need to be routed under the floor and into the basement so it can connect with the other plumbing. Drilling a hole for the water lines will be no problem, but what I'm not sure of is the best way to cut a hole for the drian pipe, this drain pipe will serve a bathtub, two sinks and a toilet.
Once I get all the prep work done, I will then bring a plumber onsite to make the final connections and verify that what I have done is safe and secure. Any suggestions on cutting the drain pipe hole in the outside basement wall?
Thanks for your insight.

Daniel Holzman 06-12-2009 12:42 PM

I think I understand what you are doing. You are planning to run the new drain under the new addition, under ground, and into the existing basement of the house where it will connect to the existing drain. This will likely be a 4 inch PVC line, at least it is at my house.

I had to do something similar for a 2 inch diameter sump pump connection. I rented an electric hammer drill, put a two inch diamond core bit on it, and went through the 8 inch thick concrete wall in about 1/2 an hour. For a four inch hole, it is likely to take at least an hour, but the process is the same. The hammer drill is pretty heavy, so make sure you get one with a stand. You don't want to be holding this device up for an hour. Also, make sure you rent a bit deep enough to get through your wall.

jogr 06-12-2009 01:37 PM

It's a lot easier if you can arrange the plumbing to pass through the rim joist.

Ron6519 06-13-2009 09:35 AM

They do have core bits you can use. You can rent the drill for the bit and it will cut whatever size hole you need. You can probably go with a 4" bit for for a 3"PVC pipe.
Rim joist would be easier, but the distance from the wall will dictate the pitch needed and the hole location.
Ron

Paragon 06-14-2009 05:41 PM

Bladesj,

I think what you need to do is forgo the will then and bring the plumber in now. It is foolish if you are going to have them trim the project out if the rough in is wrong and trust me they will let you know and so will their invoice to correct it!

Find a reputable plumber and talk with them now to prevent a huge headache for all later.

Also, Jogr is right if you cann go through the rim joist that is the way to go!

Don't be penny wise but pound foolish get the professional in now if you don't know how to do something find someone who does you will be money ahead in the long run.

jogr


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