Probable Maximum Loss (PML) Studies

Probable maximum loss (PML) investigations provide an estimate of the level of earthquake losses, which could be anticipated for site buildings, given the calculated level of seismic hazard. PSI assists in the coordination of the PML study by subcontracting the services of a structural engineering firm specializing in the completion of this type of work. To complete the PML, both PSI and its subcontractor will gather information and complete the following tasks:

  • Review data to determine the building structural classification and structural vulnerability; the structural engineer will review soils reports provided.
  • Estimate the level of earthquake losses, which could be anticipated for the site buildings, given the calculated level of local seismic hazard. Specific observable features of each building, which may result in an increase or reduction in earthquake damage with respect to other buildings of the same construction class, will be identified and their effects factored into the damage assessment.