What is the best basement concrete solution for houses with low level of ground at street level?
1. First consult with a qualified structural engineer. The structure may not be as you expect and cause more damage.
2. Determine how much the surface has to be lifted. With a tight rope, make a line from one side to the other. You may find this task easier if you tie it with bricks or something heavy. Repeat this process in many places in the basement. Also make water lines.
3. When you discover the deepest point of the fall, mark it.
4. Build a temporary post using pieces of wood. Make sure the pole is firmly attached to the ground. Alternate position 90 degrees alternately to improve stability.
5. Buy or rent a hydraulic jack. When the space on the temporary pole is adequate to set the hydraulic jack and reach the level it should, it starts to lift it. As it rises it adds smaller blocks to support the center of the structure with each new elevation.
6. When the lowest point has risen to the height of the next lowest point, carefully remove the cat by letting it sit on the temporary pole.
7. Look for problems that may have been caused by the house uprising.
8. Build another temporary post and repeat the process.
9. When the level of the ground is stable in the temporary posts, it is time to put the definitive supports. The brackets that are already can be used with minor modifications. Look at the bottom of the posts looking for cracks or any other problem. If they do not sink they can stay in place.