Patent ID: 8297025

Claim:
A method of building a hybrid tower, comprising: erecting a metal mast connected to a foundation; building a concrete structure having a plurality of superimposed concrete segments around the metal mast by using the metal mast as a support; disconnecting the metal mast from the foundation; lifting the metal mast by telescoping and guiding the metal mast along the concrete structure; and connecting the lifted metal mast to the concrete structure, wherein building of the concrete structure comprises: a) installing at least one first segment of the concrete structure; b) lifting the installed segment(s) of the concrete structure along the metal mast by guiding the lifted segments of the concrete structure using the metal mast, so as to clear a space having a sufficient height to receive a next segment of the concrete structure; c) installing the next segment of the concrete structure in said space; and d) repeating steps b) and c) until a last segment of the concrete structure is installed at a bottom part of the concrete structure.