Property owners should look to the older repair company that has been in business for more than thirty years, has minimal advertising, hiring salespeople, because they tend to be a bit of information about the principles of construction and look only at the selling job. The old lot experienced companies are generally based on the family, have a great "word of mouth" following and do a better job, because of their commitment to quality.
Homeowners should always look at the company's license may have. Most cities have allowed the company to a Class "C" license for foundation repair. You can also hire the best and top-ranked American foundation Repair Company to fix foundation cracks.
Really it is a requirement that is not adequate, the majority of companies that have this kind of license are not experienced enough to really determine the build weigh the load, "key" in determining the requirements type, number and spacing of the dock will be installed.
Do not fall into the trap of smoke and mirrors in which the company will bring a laser to determine how much of your foundation has settled. Lasers' work at height are known to accurately determine the horizontal plane, the levelness. If you allow yourself to get suckered into the hands of a little-of-this fool you will be forever at their mercy.
Finally, not all systems are created equal piercing. A pier pipe diameter of.278 "with a minimum wall thickness of.165 or greater would be a good place to start.