ABSTRACT
A new design of a high-rise building exceeding 100 m in height is considered. The superstructure was planned to rest on a five-level underground structure, the construction of which was interrupted some years ago. The intermittent low reinforcement of the foundation slab, the uncertain mechanical behavior of the foundation slab and adjacent excavation enclosure, deflection of the foundation slab and defects of the previously erected underground structure, as well as areas of frozen soil affected the design and construction processes. It was decided to increase structural stiffness of the underground construction and apply corrective measures during the construction of the superstructure. An observational design method performed with using geotechnical monitoring instrumentation proved the efficiency of the adopted design solutions.
