I have a concrete landing and stairway at the back entrance to my home.
Over the past year I've encountered water seeping from the interior foundation.
Today I began to dig around the exterior cement landing only to discover a hole under the slab.
Apparently for what ever reason rain water found a way under the slab.
With further examination I discovered a large space under the slab. I would guess it's about a foot and a half to two feet deep and extends from the outer slab to the foundation wall.
I'm surprised the landing hasn't cracked.
I need your thoughts on how to correct this problem.
Fill this space with new concrete. Or remove the slab, fill the space with soil
and pour a new slab. I really want to avoid the second if all possible.
Thanks in advance!!