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.
Stalactites (solitaire)
Before the game starts, the player can decide on how the foundations should be built. Building can be either in ones (A-2-3-4-5-6-7-8-9-10-J-Q-K) or in twos (A-3-5-7-9-J-K-2-4-6-8-10-Q). Once the player makes up his mind, he begins building on the foundations from the cards on the tableau. The foundations are built, as already mentioned, up regardless of suit, and it goes round the corner, building from King to Ace (if building by ones) or from Queen to Ace (if building by twos) if necessary. The foundation cards turned sideways, though not necessarily be done, is a reminder of the last card's rank on each foundation.