Physical Wavefield & Multi-Story Masonry Oscillator
P-Wave (6.0 km/s)
S-Wave (3.4 km/s)
Rayleigh Wave (3.0 km/s)
Sim Elapsed:
0.00 s
P-Wave Arrival
19.2 s
Hypocenter 120.2 km
S-Wave Arrival
33.8 s
S-P Lag: 14.6 s
Site Amplification
1.75x
Volcanic Ash & Alluvium
Estimated Peak PGA
0.38 g
Observed MMI: VII (Strong)
Resonant Period (T₀)
0.28 s
2-Story Masonry Frame
Inter-Story Drift
0.00 %
Shear: 0 kPa
European Macroseismic Scale (EMS-98) & Collapse Risk Grade 4: Very Heavy Damage
Simulated ground acceleration exceeds unreinforced masonry tensile limits. High shear cracking along diagonal load-bearing brickwork, partial roof separation, and significant life-safety hazard without reinforced confining elements.
Event Presets
Seismic Source Parameters
7.4
115 km
35 km
Seismic Retrofitting Workbench
Apply seismic mitigation interventions to improve ductile shear resistance of the masonry dwelling:
Estimated Collapse Probability
78.4 %
Unreinforced baseline structure