What is the process of moving a form for vertical structures upward as new concrete is added called?

The process of moving a form for vertical structures upward as new concrete is added is called slip forming. This technique involves the use of a specially designed formwork that is gradually raised as concrete is poured into it, allowing for a continuous and uninterrupted flow of concrete to create seamless vertical structures. This method is essential for constructing tall structures like silos, towers, and bridge piers, where maintaining a consistent shape and finish is crucial.

Slip forming also helps in increasing the efficiency of construction by allowing the work to progress without the need for frequent form stripping and resetting. The continuous movement of the forms while concrete is still fresh contributes to excellent bonding between layers, reducing the risks of defects. Overall, slip forming is a highly effective method in modern construction, particularly suited for vertical elements.