A tiltmeter was placed on the central pier for measuring the amount of tilt on the vertical surface. The maximum measured value of tilt was of the order of 0.3° during the longitudinal test. This tilt is elastic in nature and is observed to have recovered completely on removal of the load.
Read More: http://ascelibrary.org/doi/full/10.1061/%28ASCE%29BE.1943-5592.0000338