This permit is to remove and replace 12 existing fire alarm duct smoke detectors with 12 new duct smoke detectors and the installation of a control module used to shut down the Air Handling Units. Building Permit BLD06-02690 is to perform selective demolition of specified HVAC equipment and associated ducts, controls and utilities and at all four corners of Building #3 HP in preparation for expansion of existing corner equipment mezzanine floor area by approximately 375 sq. ft. each; reinstalling existing sunscreen against wall of new build-out. Work includes construction of new reinforced footing and pier, new structural steel columns, floor & roof beams and strengthening of specific existing columns; new steel deck & concrete overlay at mezzanine level and steel deck with single ply roof membrane; modify specific structural framing to allow new openings for ducts at mezzanine & roof; installation of 4 HVAC units, 4 circulating hot water units and all associated equipment and utilities to make new systems operate; complete all exterior finishes (new & reinstalled) & glazing. Special Inspection is required. This building is fully sprinklered for allowable area increase. Expansion area is not normally occupied, mechanical equipment mezzanine. DRH06-00360. drs