When you hire professionals to lay concrete grounds or create concrete structures, the end result is a powerful hard slab of concrete that is not easy to break. However, you will need to saw and/or grind concrete away at times, especially during repair work. To do so requires large diamond-tipped saws that vary in size. For example, small saws are ideal when a relatively small area is to be cut and time is not crucial. Larger saws, almost the size of your average guy or bigger, are used to saw and grind entire floors.