learned the handle holding trick rather quickly. thank god the concrete pad i had to bust up was only 3X3, but it was 12" thick! i feel like someone beat me with a lead pipe, good thing i am actually in shape or i would be in the bed by now.
The electric must have been a big excercise in frustration on a 12" thick slab; they are designed for no more than 4" thickness even though the Bosch it the one to use if going electric.
The 110 lb air-driven hammer and compressor outfit would have been a huge pain in the ass in logistics alone, but using the proper pre-cutting techniques the time and effort would have been much less.
in my past life i found myself using an electrick jackhammer just like the picture above... they are a pain. your forearms will hate you after a day of jackhammering. my teqnique was to employ my beer gut to sit right on top of the jackhammer and use my hands just to accuate the trigger. my flabby belly would jiggle all day by my forearms were happier. if you arent equipped with a gut you might consider a diet of bacon, cheese and beer and limit exersize untill a sufficent potbelly can be established. just make sure the wife/girlfriend(if applicable)will approve.hopefully your only using the damn thing for a short amount of time.
The electric breakers (they're not jackhammers) are designed for inside use, say in an area that you don't want to 'blow up' with dust and debris. We use them when building tenant improvement works, or in areas that would be a bitch to clean up.
As 4x stated a few demo cuts and knowing how to make the tool work for you would have done you wonders. Next time any of you rent a breaker don't get gready with wanting to break big chunks( takes too long, easy way to get the bit stuck as well) and when the bit gets in an inch to two inches twist the gun in either direction. This 'locks' the bit in and disperses more energy into the concrete, not your upper body. Once the bit is 'locked' you can run a 90lb breaker one handed if you want to rest either side of your body.
If any of you need to break out a solid floor first break a hole, then 'chip' pieces into that. The method is called 'breaking a chase.'
Not that anybody asked, but I'm just a cesspool of knowledge
Yer bringing back memories. In college I worked for a contractor building a strip mall. I had to hammer out all of the beam pockets on the top of the foundation and hammer holes for the utilities in the walls. I got REALLY good with a hammer.