I apologize for lack of info since I am kind of newbie of “home owning”.
The cracks are varied in length. In average its about 10-20" in length.
There is one about 30" which start from the center of the garage entrance and going left to the wall of the house.
But all of them are hairline in wide (less that 1/64 ").
I have been trying to post pics but my camera seems to have problem capturing the cracks. I will post them once I am able to get focus pics of these cracks.
My house is in new development area which are finished last year.
All the houses in this complex are new.
I saw at least 3 houses in the complex have the similar crackings in the slab. However some of them have perfect concrete slab. =(
Will these crackings be getting worse and cause problem to the foundation of the house? Also will they casue humidity problem or leakings (the water from the ground infiltrated these cracks)?
Thanks for the reply guys, I really appreciated.