Foundation (engineering)
A foundation is the element of a structure which connects it to the ground, and transfers loads from the structure to the ground. Foundations are generally considered either shallow or deep. Foundation engineering is the application of soil mechanics and rock mechanics (Geotechnical engineering) in the design of foundation elements of structures.
House in the Woods
The cards on the tableau are built either up or down by suit; the player can have the cards go both directions at the same pile. However, an ace cannot be placed on a king and vice versa; an ace should be transferred to the foundations. Furthermore, when a pile becomes empty, it cannot be filled. All eight foundations are built up in suit starting from aces.