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Discussion Starter · #1 · (Edited)
We are planning to build a 36 x 36 pole garage that will be partially over an area where we removed a tree. Is it necessary to remove all tree roots or can we pour concrete over the leveled ground. Our concern is that over time the tree roots will decompose causing the floor to sag... or worse. I appreciate all help!!
This garage will be in Ohio
 

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If you want to see what a tree root system can do to a garage slab. I can post some pictures tomorrow when I get home.

The original owners of our house planted two Soft Maples in the backyard. The one that is between the Kitchen and Garage is larger and has actually heaved the garage slab in the middle. Lets not forget that it also makes for tough digging when I had to replace the electrical run from the house to the garage.
 

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I think if you post your state you will get a better answer based on freeze lines.
Frost line is not the bad part. It is the tree. Majority of states that have a deep freeze, it can be anywhere from 3 to 6 feet. My area uses Block foundations and poured. The blocks get filled in the cavities as you lay it. It comes out about the same.
 

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Discussion Starter · #8 ·
Thanks for all your help. We have found a way to put it behind where the tree was so we can avoid most of the problems. Now to rent a backhoe and move TONS of dirt and get it tamped down! Yikes!
 
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