Waterbury Bus Storage and Maintenance Facility

AI is providing construction management and inspection services for the construction of the new 376,000 sf. Waterbury Bus Maintenance Facility. The facility, which meets the Connecticut High Performance Building regulations, is being constructed on a former drive-in movie theater site located on the banks of the Naugatuck river. The project involves limited remediation of the site, as well as raising the elevation of the site. The additional fill requires an accelerated soil compaction regime. Onsite storm water retention and controlled site discharge are required to minimize impact on the river water quality. 

The new multi-level facility has lower-level covered employee parking. The main level will provide inside storage and maintenance for approximately 100 buses and transit vehicles of various types.  The bus parking area of the main floor level of the garage uses a two-way post tension slab to support the vehicle weight and minimize support columns and foundations at the lower level. The main level maintenance and administrative areas are a slab on grade construction. The building is a high bay type using steel trusses to support the roof with minimal interior columns. The attached administration area is conventional steel framing. Facility electrical power is provided by the adjacent medium voltage overhead utility. In addition, the facility is completely backed up by its own diesel driven generator. High efficiency LED lighting is used throughout the facility. The roof mounted custom HVAC systems for the vehicle areas provide constant volume conditioned air and include high efficiency DX cooling with energy recovery systems. The bus areas use 100 percent outside air with the required exhaust systems for safety. The administrative spaces use variable air volume roof top systems with high efficiency DX cooling with economizer sequences. Potable and fire protection water is provided by a new 12 in. gravity water main to the site. The plumbing system uses high efficiency fixtures. Local point of use water heaters provide hot water. All sanitary wastes are gravity collected to a single sewage ejector onsite station which connects to a new 6 in. force main. All vehicle areas have a combination of trench drains, catch basins and floor drains to separate collected effluent into the storm or sanitary flows via grit and oil separators. All roof areas have roof drains connected to the facility storm systems. Separately piped roof overflows discharge to grade. Natural gas is used for heating and a new gas service connection will be provided to the site by the utility company. A gas piping system connects to facility high efficiency condensing boilers that serve a hot water heating system that connects to all the HVAC systems. The facility is fully sprinkled with a combination of wet pipe systems with dry pipe extensions in areas subject to possible freezing. The facility requires five fire department connections and related standpipes to provided full coverage.