  University buildings are significant closed built environments for COVID-19
spreading. As universities prepare to re-start in-class activities, students'
adherence to physical distancing requirements is a priority topic. While
physical distancing in classrooms can be easily managed, the movement of
students inside common spaces can pose higher risks due to individuals'
proximity. This paper provides an experimental analysis of unidirectional
student flow inside a case-study university building, by investigating
students' movements and grouping behaviour according to physical distancing
requirements. Results show general adherence with the minimum required physical
distancing guidance, but some spaces, such as corridors, pose higher exposure
than doorways. Their width, in combination with group behaviour, affects the
students' capacity to keep the recommended distance. Furthermore, students
report higher perceived vulnerability while moving along corridors.
Evidence-based results can support decision-makers in understanding
individuals' exposure in universities and researchers in developing behavioural
models in preparation of future outbreaks and pandemics.
