When we removed the unreinforced masonry chimney we found rusty small and loose metal brackets holding the chimney to the house! We replaced the second floor fireplace with a zero clearance gas fireplace and installed a reinforced concrete bond beam at 2nd floor level, with straps tying the chimney to floor level capped off with a metal chase top and caps. Lightweight metal vent pipes were installed for both the downstairs fireplace and for the zero clearance gas fireplace. A concrete chimney was poured with reinforcing anchor bolts and the chimney was finished with paper and wire and stucco. The second floor fireplace was finished with a tile job and this house is ready to ride out the next earthquake and look great doing it.