When you drive over a void you will hear the shallowness of the space under the floor.
Is there a void under basement floor.
You may also feel a slight tremor in the concrete as well.
Filling hollows under a concrete floor is done through a process called slabjacking.
In this situation the lower level is called lower ground the main floor is called upper ground and floors above it are numbered serially from 1.
There may also be a storage floor called cellar below lower ground.
As the floor slab heaves slightly usually after repeated heavy rains or due to the spring thaw it can crack and will rarely recede all the way back to its original position.
Garage floors show the least visible sign that there is a void under them.
Slabjacking is used to prevent everything from porch floors to patios and basement floors from shifting.
Tile is available in many different sizes and styles and the price range is equally broad.
You can usually tell there is a void under your garage floor by hearing it or feeling it.
Sometimes floor number 1 may be the lowest basement level.
Small cracks may also be visible in.