Self elevating formwork installation with variable geometry for making concrete surfaces, particularly very high concrete surfaces

Self elevating form work installation with variable geometry for making concrete surfaces or walls, particularly very high concrete walls, these walls being formed by successive lifts or constant height over the whole length of the work until the desired height is obtained, this installation comprising essentially means for temporarily fixing working platforms on an underlying part of the wall which has already been cast and hardened, means for shuttering the next lift over said under lying part, and elevating means adapted to produce self elevation of the whole of the platforms, which installation is characterized in that said fixing means comprise series (2) of main uprights extending substantially in vertical planes, these series being evenly spaced apart along the length of the wall, said main uprights (2.sub.1 . . . 2.sub.4) serving essentially, on the one hand, as elements for maintaining the shuttering forms in position and, on the other hand, as means for guiding and securing self elevating mobile brackets supporting said platforms and transfer means having pivot means on one side and elevation adjustment means on an opposite side of at least one of said uprights.