Helical anchors contain an extendable steel shaft with helical bearing plates. Heaps or piers refer to strong base aspects that hold up against or transfer vertical/horizontal lots. Supports are stacks used only in stress applications like limiting wall tiebacks or upright ground supports made to withstand rescinding pressures. Bored heaps are concrete stacks that have been cast in the ground and after that tired to a chosen diameter. They are generally used for structural foundations for buildings, bridges, piers and also anchors. The primary advantage of bored stacks is their ability to move lots from one end of the pile to the various other.