Philadelphia mixes some of the oldest building stock in the country with major modern institutions. Old City and Society Hill rowhouses date to the 18th and 19th centuries, with narrow winding stairs and irregular floor plans, while Center City rises into office towers and University City anchors the "eds and meds" economy with hospital and university campuses. Fishtown and Northern Liberties add converted industrial lofts to the mix.
Pennsylvania has no state OSHA plan, so private-sector Philadelphia employers follow federal OSHA, including the 29 CFR 1910.38 Emergency Action Plan rule, with the Philadelphia Fire Department enforcing the local fire code. Buildings in historic districts answer to the Philadelphia Historical Commission for exterior changes, but those rules govern facades, not egress, so the requirement to mark and post evacuation routes still applies.
Cold, snowy winters can block secondary exits and ice over outdoor assembly areas for stretches of the season. OSHAMap converts your floor plan into a clean, posting-ready evacuation map marking exits, routes, and assembly points, so a Society Hill rowhouse office and a University City hospital floor each get a compliant diagram in minutes.