I took off my floor board in my kitchen and I uncovered a big hole/ crack in the middle of kitchen floor. They are a couple poles in the floor part on the concrete flooring. Is this something to worry about? How can I fix the hole in the floor? Will cement be appropriate? If so what type of cement is appropriate for a floor? What the procedure for fixing the problem.?
Additional Details
1) Is it a concrete floor that you are worried about? Yes partially.
2) Is it a hole or a crack? A hole
3) Is the kitchen on a ground floor with a solid floor underneath or on a higher floor with rooms underneath? The kitchen is on a ground floor with a solid floor underneath.