It was shown that the periods of the free vibration responses at every floor level were almost
identical, but the averages of errors in maximum displacements in six consecutive cycles for the 3rd,
2nd, and 1st floor levels are about 4.4%, 10.2%, and 22.3%, respectively. After the smoothing the
average of errors in maximum displacements in six consecutive cycles for 3rd floor level was reduced
to less than about 3.2%. However, for both the 2nd and 1st floor levels, the average of errors in
maximum displacements in six consecutive cycles was about 5.2%. Taking the range of displacement
range of high-rise buildings into consideration, it may be worth considering application of the
proposed model in monitoring of deformed shapes for high-rise buildings. From the comparison of
deformed shapes obtained from three different methods, even though there are many issues to be
considered for improvement in the measuring distance and the precision of measurements, the
deformed shape measurement model based on a 2D laser scanner can be a promising alternative for
high-rise buildings where installation of laser displacement sensors is not possible.