DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   Concrete, Stone & Masonry (
-   -   Breaking out basement floor issue (

Cossack 05-27-2012 02:52 PM

Breaking out basement floor issue
I am installing a French drain in my basement due to water issues. I was successfully busting out the cement floors with a sledge hammer and removing the old clay pipes that were in there. I was doing well till I got behind the platform my hot water heater is sitting on. That floor is like striking iron. I can barely chip it, and I have already done 80% of the basement. I guess I will have to rent the jackhammer after all. What is happening?
Obviously, I do not know very much about cement or concrete.
Also, what kind of mixture do I use to cover the new PVC pipes?

Thank you in advance for your advice.

oh'mike 05-27-2012 08:01 PM

Poured concrete floors are often done over an uneven layer of gravel----

I'd guess that the concrete is deeper in that area----

As to the pipe cover--look at the other post about this subject (from yesterday) one of the concrete pros gave a good simple explanation on pipe gravel--silt screen--vapor barrier and concrete types--Mike--

Cossack 05-27-2012 09:27 PM

I finally made a dent and the concrete is several inches thicker than the rest of the basement. Does the fact that the hot water heater platform is close have anything to do with it? Is a jackhammer adequate?

I did not find the post about cement for the new pipe. Do you recall the name of the thread?

oh'mike 05-27-2012 09:32 PM

I'll see if I can find it---I use Sackcrete a lot---works well for plumbing trenches--

Let me look--

oh'mike 05-27-2012 09:34 PM

Continuing Sump Pump Pipe Questions - Plumbing - DIY Home Improvement | DIYChatroom

Cossack 05-27-2012 09:44 PM

Mike that was my thread. He gave me good info on laying the pipe etc., but I still do not know what kind of cement to put over the whole thing.

oh'mike 05-28-2012 05:30 AM

Regular bag mixed concrete is what I have always used---strength is not a huge issue and Sackcrete works well.

AllanJ 05-28-2012 05:45 AM

(copied from another forum)
I suggest covering the gravel filled trench with weed control cloth or even plastic sheeting before pouring the concrete floor on top.

THis prevents the concrete slurry from de-homogenizing from the new concrete,possibly affecting the quality of the concrete, and also prevents partially saturating the trench with concrete cancelling out the advantage of putting gravel in there.

Cossack 05-28-2012 02:12 PM

Alan, thanks it has been recommended starting from the ground that I lay weed cloth, 2 inches of gravel, the pipe, more gravel, and then 6 mil plastic. I then cement over that last layer of plastic. That seems to be the consensus.

All times are GMT -5. The time now is 02:29 PM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Search Engine Friendly URLs by vBSEO 3.6.1