Hi, I am an infrequent poster to this site, but really value it as a reference...
I am very interested in buying a house in Alameda, CA. The house has been inspected and found to have a faulty raised perimeter foundation, because of cracked concrete, rotation, and settlement.
A contractor has quoted in excess of $25 k to put it right. They have mentioned using "new steel reinforced concrete t-type foundations".
What does they look like, and what are the alternatives to this type of repair? Any references to diagrams, drawings would be helpful.

thanks!