Making a sump pump pit bigger.

[merc_man]

Ok looking for avice on best way to make a sump pit bigger. Its at my grandparents. They wanna put a backup in for power outages. Anyhow looking for ideas to break up the cement around the current hole to make higher one. I have one idea and drill bunch of holes little bigher then new one and try breaking out with a slege hamme. Anyone else have any ideas that dont involve renting a quick cut saw for cement.
Thanks for any advice.

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[N8TE]

Could you just install this water powered backup pump above the existing unit?

https://www.supplyhouse.com/Liberty...er-Powered-Sump-Pump-Back-Up-Emergency-System

 

[merc_man]

The current hole is so small the pump that in ther barley fits. And durring a good rain it comes on ever 30 seconds.
The hole is maybe 6 or 7 inchs round by 14 ish inchs deep

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[N8TE]

Gotcha

 

[Homemade]

Both will work. Depending on how clean you want the cut to be.


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[Ronaldo]

I've used the drill and break method. Ain't pretty but it works.

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[stihl livin]

Grinder and cement cutting wheel. You only need to cut down so far so your top line is clean looking. Then you can use a bfh to break up the concrete

 

[ktmtigger]

Hammer drill every half inch and bust it out

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[Wilhelm]

As sump pumps are next to non existing here in Croatia I have no idea what the current sump of Your parents looks like, nor can I imagine what You are aiming to get.

That been said, I have had very good results sectioning concrete by cutting it up with a 230mm/9" angle grinder and a diamond cutting wheel.
I tend to break the cut up sections with my pickax.

I got the diamond wheel at my local supermarket for ~14$, it is cutting very well.

If You try this, use all imaginable PPE, overall, gloves, glasses, mask, ear plugs . . .
Move any close by vehicles far away, close any house windows and doors . . .
You'll create a huge dust cloud and You'll earn the name Casper when You're done.

 

[merc_man]

Well here is how i made out. I rented a hammer drill and made a lot of holes lol.
Cement was only about 2 to 3 inch thick was kinda surprised at how thin it was. My basement is about 6 inch thick. But it did go pretty good. Gonna pick up a battery backup probly tomorrow and put it in monday.

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[Ronaldo]

That turned out really nice. Good job!

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[merc_man]

Thanks. I was pretty happy with how turned out too.

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[Wilhelm]

Well here is how i made out. I rented a hammer drill and made a lot of holes lol.
Cement was only about 2 to 3 inch thick was kinda surprised at how thin it was. My basement is about 6 inch thick. But it did go pretty good. Gonna pick up a battery backup probly tomorrow and put it in monday.

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That is not what I imagined it looked like, at all!

In hindsight, a drill is definitely the way to go.

 

[Homemade]

Nice work


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[ktmtigger]

Nice work come out clean looking should be good for years

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[merc_man]

All finished. Backup is in. Hopfully no more worying about power going out for the grandparents. Ther too old to loose sleep over that lol

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[bigbadbob]

Good work.
I have a manual concrete breaker, like a tall slide hammer used it to make my sump like yours. Did the drill holes first