Cutting into concrete slab


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Old 11-10-14, 11:04 AM
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Cutting into concrete slab

I need to cut into my basement slab to move some pvc drains. I originally thought I'd rent a jackhammer. Looking online I see that some SDS rotary drills (Bosch models for example) can be equipped with chisel bits to perform the demo and could be easier to control but with similar results. Any suggestions on the SDS rotary drill idea would be appreciated - Thanks.
 
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Old 11-10-14, 11:44 AM
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How much concrete do you need to break?

Those two tools are almost a world apart though they do the same thing. One weighs less than 10 pounds while the other usually comes on a hand truck with wheels because it's so heavy. I would use a concrete saw to cut as deep as possible and to leave cleaner edges. Then bust the concrete out of the center with the jackhammer. A rotary hammer set to hammer can break concrete but it's much slower than a jackhammer.
 
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Old 11-10-14, 01:10 PM
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I was thinking that was probably the case. Thanks for the information.
 
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Old 11-11-14, 04:55 AM
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while we do this item often, we'll generally use a demo saw w/14" blade & dustmuzzle ( or wet mister attachment ) to diamond saw the trench +make cross-cuts to ease conc removal,,, you could use a 4" grinder w/conc blade to outline trench to 1" depth then ' sds-max ' size chipping gun w/point OR 1" chisel bit,,, just my $.03
 
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Old 11-13-14, 04:23 AM
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Stadry, thanks for the reply. I think I'll use the idea of scoring lines with grinder before chipping out the concrete.
 
 

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