53 Pa. Stat. § 14532
The Fire Marshal, his chief assistant and inspectors, may examine all buildings upon which any fire-escapes may be erected, shall see that it is kept in good order and repair, and no person shall at any time, place any incumbrance of any kind whatsoever upon any of said fire-escapes or passageways constructed or intended for the escape of persons from the premises in case of fire. Any owner or occupant of buildings or premises, failing to comply with the orders of the authorities above specified, shall be deemed guilty of keeping and maintaining a nuisance detrimental to life and property, and on conviction before any magistrate be fined twenty-five dollars, or, in default of such payment, imprisoned in the county prison not more than thirty days.
53 P.S. § 14532