Stamford Parking Garage in the City of Stamford

The Base Technical Concept establishes the following methods and elements: 1. Stamford Parking Garage - A new parking garage for the Stamford Transportation Center for approximately 929 vehicles. The proposed parking garage will be located west of Washington Boulevard, between I-95 (to the north) and the railroad tracks (to the south), and will span above South State Street. The garage is to be framed with precast concrete members including columns, double-tee floor members, girders, and spandrel beams/panels. The lateral force resisting system for the garage is to be precast concrete shear walls. The stairs are to be weather-protected. The elevator core is to provide three machine room-less elevators in shafts with conditioned machinery spaces. The garage is to be connected to the west end of the Track 5 platform with an elevator stop and stairs from the second floor of the garage; this connection is to replace the existing concrete stairs from the platform to Washington Boulevard. There is to be management offices on the ground floor level that shall be conditioned space. Covered bike storage racks are also to be included on the ground floor of the garage. The parking garage is to be clad with custom fabricated perforated metal panels attached to secondary vertical framing members on all four sides. The four corners of the garage at the stairs and elevator core are to be clad in a combination of architectural panels and glazing. The aesthetic design is to include an LED facade lighting program. 2. New approximately 320-foot long enclosed pedestrian bridge - Connecting the fourth floor of the new parking garage to the existing station at the concourse level. This pedestrian bridge is to span over Washington Boulevard from the east facade of the new garage to a new portal in the west facade of the north stair tower of the existing station. The structure of the pedestrian bridge shall be a steel thru-truss with a precast concrete floor slab system supported by floor beams. The pedestrian bridge trusses shall be supported by built-up structural steel columns. The exterior walls of the pedestrian bridge are to be full-height glazing. Structural isolation joints shall be utilized between the pedestrian bridge and adjacent building structures. 3. Station Renovations - Renovation of the existing station to accommodate the new pedestrian bridge connection. Structural modifications shall include a new structural steel and concrete interior landing and walkway connecting the pedestrian bridge portal to the existing landing outside the concourse-level vestibule. Architectural renovations shall include replacing existing glazing on the west facade of the north stair tower with exterior envelope modifications that are coordinated with aesthetic design of parking garage and pedestrian bridge. . 4. Site and Roadway Work - Demolition is required of the existing on-site parking lot, existing South State Street within the project limits, site lighting, and overhead utilities crossing the site. South State Street is to be realigned with full-depth roadway reconstruction. The on-site storm drainage system is to be reconstructed. Construction of new retaining walls in the embankments of I-95 and the railroad tracks are required. The project requires new utility connections including water, sewer, storm sewer, gas and electric. 5. South State Street Intersection Improvements - The existing traffic signal at the intersection of South State Street and Washington Boulevard is to be removed and replaced in conjunction with intersection modifications and pedestrian crossing improvements.

1 Parking Garage, New Construction.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Concrete Forming and Accessories, Concrete Reinforcing, Cast-in-Place Concrete.
Division 04 -	Masonry, Unit Masonry.
Division 05 -	Metals, Structural Metal Framing.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing.
Division 10 -	Specialties, Signage, Fire Protection Specialties, Fire Protection Cabinets, Fire Extinguishers.
Division 11 -	Equipment, Vehicle and Pedestrian Equipment.
Division 21 -	Fire Suppression.
Division 26 -	Electrical, Lighting, Emergency Lighting, Exit Signs, Exterior Lighting.
Division 28 -	Electronic Safety and Security, Electronic Surveillance, Electronic Detection and Alarm.
Division 31 -	Earthwork, Site Clearing, Clearing and Grubbing, Grading.
Division 32 -	Exterior Improvements, Flexible Paving, Asphalt Paving, Rigid Paving, Concrete Paving, Curbs, Gutters, Sidewalks, and Driveways, Paving Specialties, Parking Bumpers, Pavement Markings.