When evaluating demo hammers, it is important to keep weight class and removal rate in mind, Burdick said. “The industry most often references demolition hammers by their weight class and impact energy, which can range from 13 to 60 pounds and from 5.6 foot-pounds impact energy to 43 foot-pounds,” he said.
How big of a jack hammer do I need?
Paving Breakers (Jackhammers) To determine which tool is best for you - you want to determine what work you will normally be doing with the tool. Generally speaking – a 40lb breaker is good for 4” concrete, 60lb for 6” and a 90lb for 9”.