FALL 2013
Foundations for Tall Buildings
by
Mohammed Hossain Raju
& Md. Shariful Islam
Good foundation design is important in all buildings, and even more so in the
case of tall buildings. This work represents a study of the design of foundation
for tall buildings (i.e., 50- and 100-storied Framed Tube and Diagrid systems)
subjected to static vertical and wind load calculated by ETABS.
From the base reactions obtained, pile, mat and combined pile-mat foundation are
designed. Among them the combined pile-mat foundation is found to be the most
economical. Among the earth-retaining systems; i.e., cantilever type retaining
wall and braced excavation are also designed.
Since ground floor column
reactions of the Diagrid system are much higher, its foundations are thicker and
require more reinforcements.