If you are in an area without frost then the form should be backfilled 2 feet to hold it in place when it is being filled with concrete.
How to level floor with concrete piers.
Tie a piece of nylon string between the two nails keeping it taut and positioned visually level with the lower edge of the beam.
Place heavy duty floor jacks under the low spots.
An underlayment is a thin layer of material sandwiched between two other materials.
Assign a person to each jack and raise the jacks slowly and at the same time until the spirit level shows the house is level.
Should rebar be required pour concrete into the system first.
Just make sure the posts are perfectly plumb just grind it level.
Apply concrete leveler primer to the floor with a soft bristle push broom.
Use an underlayment floor leveler or floor patch product to fix low spots in a wood or concrete subfloor.
Different situations call for different tools.
A pier beam foundation can be repaired and leveled by installing steel pilings or concrete pilings under key locations under the concrete perimeter beam.
It s used to help insulate absorb sound and reduce wear on your floor.
Pier beam foundation leveling.
4 or 5 rebar rods into the tube.
You can cut a slight angle at the bottom of the posts or shim the top of the pier with concrete to make a level surface.
Run a line outside the house and mark the low spots in the foundation.
Then with the post anchors properly aligned with your string lines level the piers in both directions.
Soak the piers with a hose and then place them on the footings five to 10 minutes after the footings have been poured when the concrete is stiff enough to support them.
Insert three or four no.
Install your footings 4 to 6 inches below the forst line to avoid potential movement.
Attach a level string line on the sagging girder beam by tacking a nail diagonally into the lower corner of the beam at two points as near to the ends as possible or at a minimum spanning the depressed floor area.
Keep the concrete damp for two days allowing it to cure slowly.