Ambient Vibration Testing of 10 Story Residential Building (Building 3)

This building was located in a newly developed residential district of Santiago in the north-east of the city and represents a 10-story reinforced concrete shear wall building with one level of underground parking. At the time of deployment (March 2010) only floors 2 and 9 were unoccupied and chosen for instrumentation. Aside from floors 2 and 9, additional sensors were placed at the subterranean level and the roof. A total of 10 accelerometers and four linear voltage differential transducers (LVDTs) were installed in the building. The building suffered moderate structural damage at the subterranean parking level which consisted mainly of concrete cracking and rebar buckling at the column- and wall to ceiling interface. Between March 18th and May 5th, a total of 30 aftershocks were recorded in this building with peak ground horizontal accelerations ranging from 0.5cm/s2 to 7 cm/s2 (0.05% to 0.7%)g. Several days of ambient vibration were recorded as well and serve as baseline analysis.