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<blockquote data-quote="Eric" data-source="post: 9532" data-attributes="member: 108"><p>Using a breaker isn't just point it on the concrete and pull the trigger. Well it can be, but you wont make good progress. There is an art to it.</p><p> How deep and large was the footing? How thick was the slab? Was there rebar in the slab?</p><p>When breaking up a slab, I will start at an edge, or I will make a relief cut with the breaker (break out a line all the way through the slab). This then gives you a weak edge to break behind. Then you keep riding that edge as you work your way backwards. The weak edge allows a relief point for the broken concrete to release to. If you don't do it this way then everything stays some what interlocked and you end up fighting with it longer than necessary.</p><p>Also, dont bite off more than the breaker can chew. With a 4 inch slab bites should be abot 12 to 18 inches unless it has rebar. Then you will be breaking up the entire slab to relase it from the rebar. The thicker the slab the smaller the bites.</p><p>When breaking up a footing I will make a relief cut about every 5 feet as far as I can reach with the breaker through the footing. I also cut as much rebar as I can with the breaker (I use chisel points so this makes it easier to break rebar). Then I pry and snap the 5 foot section out. Sometimes you need to cut the remaining rebar.</p><p>Sometimes if the footing is locked in by the soil, it helps to loosen the soil with a bucket or the breaker bit adjacent to the footing.</p><p>Maybe I should put a video tutorial together and post it on youtube?</p></blockquote><p></p>
[QUOTE="Eric, post: 9532, member: 108"] Using a breaker isn't just point it on the concrete and pull the trigger. Well it can be, but you wont make good progress. There is an art to it. How deep and large was the footing? How thick was the slab? Was there rebar in the slab? When breaking up a slab, I will start at an edge, or I will make a relief cut with the breaker (break out a line all the way through the slab). This then gives you a weak edge to break behind. Then you keep riding that edge as you work your way backwards. The weak edge allows a relief point for the broken concrete to release to. If you don't do it this way then everything stays some what interlocked and you end up fighting with it longer than necessary. Also, dont bite off more than the breaker can chew. With a 4 inch slab bites should be abot 12 to 18 inches unless it has rebar. Then you will be breaking up the entire slab to relase it from the rebar. The thicker the slab the smaller the bites. When breaking up a footing I will make a relief cut about every 5 feet as far as I can reach with the breaker through the footing. I also cut as much rebar as I can with the breaker (I use chisel points so this makes it easier to break rebar). Then I pry and snap the 5 foot section out. Sometimes you need to cut the remaining rebar. Sometimes if the footing is locked in by the soil, it helps to loosen the soil with a bucket or the breaker bit adjacent to the footing. Maybe I should put a video tutorial together and post it on youtube? [/QUOTE]
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