Chapter 8 of the International Building Code contains detailed requirements for means of egress, the system of travel and passages providing safe routes from any occupied space to the public way. Means of egress includes occupant load calculations, exit capacity requirements, travel distance limitations, interior finishes in egress paths, and specific design standards for stairs, ramps, doors, and signage. Occupant load is determined by dividing floor area by the occupant load factor established for the specific use, with factors ranging from 4 square feet per person for assembly to 500 square feet per person for storage areas. Egress capacity is calculated to ensure adequate width and number of exits to accommodate maximum occupant load, with requirements that buildings have minimum two exits when occupant load exceeds thresholds established by occupancy type. Travel distance to exits, measured along the floor surface, is limited to 200 feet in sprinklered buildings or 150 feet in non-sprinklered buildings for most occupancies, with shorter limits for high-hazard uses. Emergency lighting along egress paths must illuminate exits and signage to minimum 1-foot candle for 90 minutes during power loss. Exit signage must be illuminated with 5-foot candles or provide luminous letters at least 6 inches tall. All exits must be separated from main building areas by fire-resistance-rated walls, floors, and doors. The exit path consists of exit access (area of intended occupancy), exit (passageway through fire-rated construction), and exit discharge (exterior area leading to public way). Emergency voice communication systems are required in certain buildings for occupant notification.