Yep its called a [Permanent Wood Foundation](https://www.nachi.org/permanent-wood-foundations.htm https://www.nachi.org/permanent-wood-foundations.htm) I had a

Yep its called a [Permanent Wood Foundation](https://www.nachi.org/permanent-wood-foundations.htm https://www.nachi.org/permanent-wood-foundations.htm) I had a house with it, had no problems with it.