Advice on Demolition hammer use

[NorthWest1]

Hi,
Would a demolition hammer be suitable for cutting a trench through a concrete slab ? I need to trench about 8'' wide for about 2M inorder to run a duct . I had a test run of using a diamond blade on a grinder, on my outside path ( this too needs a trough) but had to abandon due to dust going all over the road/neighbouring properties.
Would the demolition hammer with a pointed bit cut a reasonable channel or will it cause massive damage to slab ?

 

[DAZB]

Cutting a trench with the grinder and diamond blade will do the best job and you just need to get a hosepipe trickling a stream of water onto the blade as you cut which will keep all the dust down. You can hire the disc cutter with the attachment from a hire shop if that is better for you but that option will work well.

 

[foxhole]

It would likely shatter the slab.
Proper tool for job.

 

[^woody^]

Ahem ...

 

[noseall]

Ahem ...

View attachment 335445

Bloody hell Woody, you get about! Is that you doing roadworks in the Far East?

 

[noseall]

Would the demolition hammer with a pointed bit cut a reasonable channel or will it cause massive damage to slab ?

'Damage' is their middle name.

All depends how thick the slab is. You'll need to start a lot wider than 8" if the slab is thick, in order to maximise the width of breakage, lower in the concrete.

 

[^woody^]

Bloody hell Woody, you get about! Is that you doing roadworks in the Far East?

Yeah, from the agency - 85,000 Won a day plus expenses! Snapped it up.