🏗️ Structural Demolition Simulator: Progressive Collapse Lab - Load Path, Column Capacity, Wind, Seismic and Impact

Build a 3-20 storey reinforced-concrete frame, choose concrete strength, column size and load concentration, then load it (gravity, wind, earthquake, vehicle impact or a removed column) and watch load redistribute, columns buckle, slabs punch and debris pancake - with a live stress map.