THE PROJECT IS LOCATED AT 18-20 TRINITY STREET IN HARTFORD, CT AND CONSISTS OF TWO BUILDINGS THAT ARE STRUCTURALLY CONNE

Project overview

Hartford commercial permit COM-ALT-24-000420 (Commercial Alteration Permit): THE PROJECT IS LOCATED AT 18-20 TRINITY STREET IN HARTFORD, CT AND CONSISTS OF TWO BUILDINGS THAT ARE STRUCTURALLY CONNECTED. 20 TRINITY IS A 4-STORY BUILDING ORIGINALLY CONSTRUCTED IN 1905. 18 TRINITY IS A 6- STORY BUILDING WITH A BASEMENT AND WAS ADDED TO THE REAR OF 20 TRINITY IN 1921. BOTH BUILDINGS WERE SUBSTANTIALLY RENOVATED IN 1959. AT THAT TIME, THE ORIGINAL DOME OF 20 TRINITY WAS REPLACED WITH A MECHANICAL PENTHOUSE, AND THE ATRIUM AND THE LIGHT WELL AT 18 TRINITY WAS INFILLED WITH NEW FLOOR AREAS. THE GROUND FLOOR AT BOTH BUILDINGS IS PARTIALLY BELOW GRADE, BUT LEGALLY IS CONSIDERED STORIES ABOVE GRADE. THE ORIGINAL FIRST FLOOR OF 20 TRINITY IS FRAMED WITH STEEL BEAMS AND GIRDERS INCASED INTO THE EXTERIOR MASONRY WALLS. STEEL BEAMS AND INTERIOR COLUMNS SUPPROT A TERRACOTTA FLAT ARCH FLOOR SYSTEM. A MAJORITY OF THE ORIGINAL SECOND FLOOR WAS DEMOLISHED DURING THE 1959 RENOVATION. THE ORIGINAL PORTIONS THAT REMAIN ARE LOCATED AT THE NORTH END OF THE BUILDING. THE 1959 SECOND FLOOR FRAMING CONSISTS OF 36" DEEP WIDE-FLANGE GIRDERS SPANNING EAST-WEST TO STEEL WIDE-FLANGE COLUMNS IN THE EXTERIOR WALLS, CREATING A COLUMN-SPACE ON THE FIRST FLOOR. THE FLOOR FRAMING SUPPORTS A 4" CONCRETE ONE-WAY SLAB. THE DEEP GIRDERS ALSO SUPPORT THE COLUMNS FOR THE UPPER FLOOR FRAMED WITH STEEL WIDE-FLANGE BEAMS SUPPORTING A 4" CONCRETE ONE-WAY SLAB. MOST OF THE ORIGINAL ROOF FRAMING OUTSIDE THE FOOTPRINT OF THE PENTHOUSE REMAINS INTACT, INCLUDING THE STEEL TRUSSES THAT SUPPORTED THE FORMER DOME. FLAT ROOF FRAMING IS COMPRISED OF STEEL BEAMS SUPPORTING TERRACOTTA FLAT ARCH TILES. AT THE NORTH END OF THE BUILDING, THE BEAMS SPAN BETWEEN THE CORRIDOR WALLS AND THE NORTH EXTERIOR WALL. 18 TRINITY IS A STEEL FRAMED STRUCTURE. COLUMNS ARE STEEL WIDE-FLANGED SECTIONS ENCASED IN CONCRETE FOUNDED ON CONCRETE SPREAD FOOTINGS. BASEMENT WALLS ARE CONCRETE. FLOOR FRAMING IS COMPRISED OF STEEL WIDE-FLANGE GIRDERS SPANNING BETWEEN COLUMNS IN BOTH DIRECTIONS. THE CONCRETE ONE-WAY SLAB SPANS. THE STEEL INFILL BEAMS ARE ALSO ENCASED IN CONCRETE FOR FIRE-RATING PURPOSES. THE ROOF CONSISTS OF A FLAT ROOF FRAMED WITH STEEL BEAMS SUPPORTING A CONCRETE SLAB. THE ORIGINAL FLOOR BEAMS WERE WRAPPED IN PLASTER ON LATHE TO CREATE A FIRE-RATING. THE EXTERIOR WALLS ARE COMPRISED OF THREE WYTHES OF SOLID BRICK WITH 4" TERRACOTTA BLOCKS AT THEIR INTERIOR SIDE. THE PROPERTY WAS LISTED IN THE NATIONAL REGISTER OF HISTORIC PLACES IN 1984 AS A CONTRIBUTING RESOURCE TO THE ELM STREET HISTORIC DISTRICT. A PERIOD OF SIGNIFICANCE (POS) IS ESTABLISHED AT 50 YEARS BEFORE THE NOMINATION WAS LISTED (1934). AS A RESULT, ALL ALTERATIONS AND REPLACEMENTS COMPLETED AFTER 1934 FALL OUTSIDE THE BUILDING’S POS AND ARE NOT CONSIDERED HISTORICALLY SIGNIFICANT. THE BUILDING WILL BE ADAPTED TO THE RESIDENTIAL MULTIFAMILY USE AND IS CONSIDERED AS CHANGE OF OCCUPANCY FROM B TO R USE IN ACCORDANCE WITH THE INTERNATIONAL EXISTING BUILDING CODE. THE NEW PROGRAM INCLUDES 61 STUDIOS & 1-BEDROOM DWELLING UNITS. AMENITY SPACES INCLUDE FITNESS ROOM, COWORKING SPACES, AND COMMUNITY SPACE AT TH ESTH FLOOR WITH ACCESS TO THE LANDSCAPED ROOF DECK. ADAPTIVE REUSE OF THESE BUILDINGS WILL COMBINE TWO STRUCTURES INTO ONE MEETING THE MOST RESTRICTIVE CONSTRUCTION TYPE AS DESCRIBED BELOW.. 20 TRINITY ST, HARTFORD, CT 06106.

Key specs

• Commercial Alteration Permit
• 20 TRINITY ST, HARTFORD, CT 06106
• Permit COM-ALT-24-000420

Manufacturer watch list

• hvac
• roofing
• lighting
• concrete
• fire suppression