Progressive collapse fragility of substandard and earthquake-resistant precast RC buildings

•Performance-based robustness assessment of precast RC frame buildings under column loss via nonlinear time history analyses.•Computational procedure based on nonlinear capacity modelling of frame members and beam-column connections.•Investigation of different beam-column connections representative of low-rise European commercial buildings.•Progressive collapse fragility models for precast buildings designed for earthquake resistance with or without horizontal ties in beams.•Comparison between mean-centred (deterministic) and probabilistic robustness assessments.