Slipform & jumpform
Rising formwork casts cores, silos, piers, and towers continuously or story by story.
Slipforms climb slowly during continuous placement. Jumpforms cast, secure, release, and rise in repeated cycles, especially in tall cores.
Reinforcement, embedded items, and elevator tolerances accumulate vertically, making precise surveying part of the method.
Supertalls such as Burj Khalifa show how vertical form systems can determine the entire construction schedule.
Wind, worker safety, and concrete supply set limits. Interrupted placement can create structurally weak cold joints.
