SafeEvac προσβάσιμη εκκένωση ΑμεΑ σε δημόσια κτήρια
SafeEvac accessible evacuation for people with disabilities in public buildings

Keywords
Εκκένωση ΑμεΑ ; Προσβάσιμη εκκένωση ; Άτομα με αναπηρία ; Εσωτερική δρομολόγηση ; Έξυπνη πόλη ; BIM εκκένωση ; IFC δρομολόγηση ; Αλγόριθμος DijkstraAbstract
The emergency evacuation of public buildings remains a critical urban safety challenge, particularly
for individuals with mobility impairments who are unable to follow conventional evacuation protocols
designed for the general population. This thesis presents SafeEvac, a prototype mobile system that
addresses this gap by positioning the safe evacuation of people with disabilities (PwD) within the
smart city paradigm.
The system leverages four core technologies: Building Information Modeling (BIM) of the
facility in IFC 2x3 format (ISO 16739), indoor positioning QR codes (with BLE beacons proposed for
full deployment), a Dijkstra algorithm for accessible routing that automatically excludes staircases,
and simulated real time communication within the web prototype (Firebase proposed for production
implementation), a custom STEP/EXPRESS parser was developed to automatically extract the
evacuation graph from the IFC file without relying on external libraries.
The system was evaluated through heuristic evaluation based on Nielsen's principles, usecase
scenarios, and a comparative benchmark of Dijkstra against A*. The benchmark results
confirmed Dijkstra as the most suitable algorithm for this application domain. The thesis further
proposes an extension to the urban scale through a crowdsourced PwD pickup network.


