This paper addresses axial shortening prediction o
f the vertical concrete elements of tall buildings
with a particular focus on developing a reliable mo
del for high strength concrete (HSC). An establishe
d
reinforced concrete column shortening model used fo
r normal strength concrete (NSC) is modified to pre
dict
axial shortening in vertical elements made of HSC.
To compare with the theoretical model, the axial sh
ortening
measurements taken from the 83 storey World Tower B
uilding, Sydney (WTS), obtained during the
construction period, are used. The theoretical mode
l having the best match with the actual measurement
s are
recommended for predicting axial shortening of vert
ical elements using HSC.