What Are Deep Foundations? EP 7: Foundation Series In this video, we discuss deep foundations and the working principle of pile foundations. We talk about the two main types of piles - driven piles and bored cast-in-situ piles - and how they are used to support a building’s weight when the surface soil is not strong enough. We also mention the importance of a soil report, pile design, and testing plan for a credible deep foundation job. Next episode, we’ll cover pile caps and ground beams. | Fol