Effect Of Buoyancy On Stitched Raft Of Building Having Three Basements In Presence Of Ground Anchors
Buildings with deep basements and without substantial weight of the super-structure, when constructed within
highly fluctuating rise and fall of underground water level, experiences significant uplift pressure due to buoyancy effect.
Use of pre stressed rock anchor is a prominently accepted technique to fix the structure to the ground against the excess
hydrostatic pressure, when the sound rock is available at the level of basement stitched raft. The efforts are made in this
study to suggest a suitable design approach and arrive at appropriate constitution of various parameters like locking of
anchors to partial capacity, residual load in anchors, spacing of anchors, raft thickness and reinforcement consumption in
raft, to achieve practical and economical solution which will help maintain structure in position.