Could I use this blade to cut my basement floor?

[TechBoyJK]

http://www.homedepot.com/p/DEWALT-7...PIPHorizontal1_rr-_-202579871-_-100018091-_-N

I'm going to have a plumber come out and move a sewer stack for me, and most of the cost is messing with the concrete. They suggested I DIY to save money. 2/3 of the bid was removing the concrete.

The area that needs to be cut out has already been filled once, so I just need to cut along the same line. Is this a blade I could use to do so?

I know to wear goggles, a mask, and have ventilation.

 

[MagnusTheBrewer]

The blade will work IF, you have a good saw.

 

[Humpy]

No cut, big hammer, you smash.

If you do have to cut you'll need a 12" blade to cut through a 4" slab. Rent a saw with a wet kit.

 

[TechBoyJK]

The blade will work IF, you have a good saw.

My dad has several nice Dewalts I can use if mine doesn't cut it. (no pun intended)

 

[TechBoyJK]

No cut, big hammer, you smash.

If you do have to cut you'll need a 12" blade to cut through a 4" slab. Rent a saw with a wet kit.

the plumber said to cut it because we'll be pulling out a concrete patch that was filled in. If I can just trace out the patch with the saw, it should separate from the rest of the floor much easier than if it were original slab.

 

[Humpy]

Cutting where it was already cut will maybe help a little, at the cost of a big mess. I promise you, if you cut it you want a big saw and you want to wet cut it.

Assuming it is the full thickness of the slab, the patch will not be significantly bonded. It will easily separate along the original cut, the hard part will be blasting out a chunk to get started. I'd usually drill a few holes with a rotary hammer, to create some relief in a small area to get started, and then break it up with a sledge hammer. Concrete breaks easily once there is a place for it to go as it breaks away.

I enjoy breaking shit with big hammers though. If it doesn't hurt the pride one might rent an electric jackhammer. If it's only 10 feet or so of trench it's about the same amount of work in the end.

 

[TechBoyJK]

I read online last night that it might help just to drill a bunch of holes around the perimeter of the patch. That it could make a big start in breaking it up, maybe enough that a big hammer might be able to break up the rest.

If my basement is dry at the moment, and I plan on getting it taken out either way, even if I ultimately end up having a pro do it, should I give the drill idea a try? I have a contractor friend willing to come out this weekend with a small jack hammer, but he's $30 per hour. So anything I could plug away at the next few days could help with that.