The importance of german or oversite concrete in a building can’t be overemphasized.
There has been a lot of arguments on wether to use a german floor or concrete for your building projects or not.
I have also built too without a german floor in exceptional cases, but this is not the best practise.
In a very solid soil most people tends to forgo german flor because of the cost of concrete especially on a one floor bungallow, however you must not build in a waterlogged place or area susceptible to heavy settlement without doing german floor.
In otherwords german floor is important and very necesssary if you cvan afford it even in a very solid and non-problematic areas. These are the importance.

http://buildingcontractorsecrets.com/2010/07/importance-of-german-or-oversite-concrete/

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