“…• an underestimation of the vertical load-bearing capacity of the MS, as in reinforced concrete bridges when barriers, sidewalks or diaphragms are excluded from the model [3], or in masonry bridges when fill material and pavement are neglected [4], or in metal roof deck diaphragms of building structures when non-structural roofing components are omitted [5]; • an underestimation of the horizontal load-bearing capacity of the MS, or an inaccurate estimation of its expected response under code-conforming seismic [6] or wind [7] loads, as in moment resisting frame structures where masonry infills are excluded from the model; • a bias in the outcome of vibration-based model calibration, as for a variety of non-structural and secondary structural elements in bridges (barriers, sidewalks and pavement [8], transverse bracings [9]), in footbridges (deck and handrails [10,11], asphalt pavement [12]), in buildings (cladding and internal partitions [13], stairs and elevators [14]), in wharves (non-structural steel frames and piping systems [15]), and in stadia (precast seating deck units [16]). …”