Patent ID: 8544238

Claim:
A multi-floor building construction system for progressively constructing floors on load-bearing means of a foundation as the occupational need to do so arises and while sub-floors can be occupied, said system comprising a permanent building roof structure displaceably supported over an uppermost floor of at least an upper one of one or more occupational floor space constructed on the foundation, extensible load support means secured in said roof structure and resting upon and pushing against said uppermost floor to support a total load of said permanent roof structure, means to operate said extensible load support means in synchronization to elevate said permanent roof structure to create a construction zone over said uppermost floor of the building structure where an occupational floor space is to be constructed under said permanent roof structure with said permanent roof structure held elevated from said uppermost floor by said extensible load support means, means to transport construction materials within dedicated and enclosed spaces isolated from said occupational floor spaces, occupant services providing means adaptable to said further occupational floor space and integrated with existing occupational floor spaces and adjustable hoisting means secured inside said permanent roof structure for connection to floor sub-assemblies fabricated in said construction zone, said extensible load support means lifting said floor sub-assemblies connected to said adjustable hoisting means while simultaneously raising said permanent roof structure.