Using System Reliability Concepts to Derive Partial Safety Factors for Punching Shear with Shear Reinforcement: An Explorative Analysis

Punching shear-reinforced flat slabs can fail in three modes: (1) inside the zone, (2) outside or (3) at maximum punching shear capacity. By using theory of structural systems reliability, this study investigates how these failure modes combined affect safety level reinforced concrete with reinforcement, and ultimately, variation partial factors. Based on DIN EN 1992-1-1 together German National Annex 1992-1-1+NA(D), by distinct reliability-based methods (i.e., levels II III), system probabilities and, consequently, factors were analysed. The results indicated that fluctuate significantly depending governing ultimate limit state function scatter basic variables. Furthermore, they chosen method had a significant influence resulting level. sensitivity analysis confirmed premise be reduced without compromising socially accepted (e.g., recommended 1990). Ultimate benefits include material cost savings CO2 emission reductions. Finally, approach addressed paper offers new perspective derivation considered engineering practitioners.