A self-erecting tower crane is a type of crane with tower and boom/jib elements that do not dismantle into component sections. Self-erecting tower cranes can be transported between sites as a complete unit. The erection and dismantling process is a fundamental part of the cranes function.
Self-erecting tower cranes lift themselves from the ground or lift an upper, telescoping section using jacks, allowing the next section of the tower to be inserted at ground level or lifted into place by the partially erected crane. Therefore they can be assembled without outside help, and can grow together with the building or structure they are erecting.