As an example of what an air-driven jackhammer can accomplish if used properly, this is a photo of a driveway in my neighborhood getting replaced.
Less than an hour after pulling up to the house, one jackhammer and one bobcat have essentially removed the entire driveway, roughly 20' wide and 30' long. In this picture, the hammer is already done and put away and the bobcat is piling up what's left of the pieces. 30 minutes after this photo was taken, the pile was loaded and gone.
This is why I think electric hammers are essentially toys and why you should
rent the biggest thing you can from a
rental shop, once in a blue moon for whatever removal you need to do. Buying an inexpensive hammer drill for installing tap-cons and the like is fine, as they don't cost much more than a regular drill and can be used for other things.
