Deck the office halls ... but safely The Baltimore City Fire Code requires that decorations and artificial trees be certified as flame retardant or flame resistant. Most noncombustible decorations are labeled as such. Natural cut (live) trees are not permitted inside buildings on campus. However, living trees with roots protected in an earthen ball are permitted provided they are maintained in a fresh condition and are not allowed to become dry. Balled trees may be replanted. Trees or other such decorations should not be allowed to obstruct exits, corridors or stairs. Only U-L listed interior and/or exterior lights and associated wiring should be used. Electrical lights are prohibited on metal trees due to shock and fire hazard. Spotlights may be used to illuminate metal trees. Electrical extension cords should be used in accordance with accepted safe practices and must not be placed under carpets or in walking paths. For further information, call the Office of Safety and Environmental Health at (410)955-5918 or (410) 516-8798.