Urbana Library & Senior Center serves the community of Urbana, located in Fredierick County, Maryland.

The HVAC system design is a four-pipe central plant with a variable air volume air distribution system. The four-pipe central plant consists of an air-cooled chiller, two cast iron sectional boilers and associated pumps. The air cooled chiller is located on the roof and the heating plant and chilled water pumps are located within the Penthouse. A smoke control system was incorporated and included four smoke exhaust fans and one make-up air fan. The additional make-up air for the smoke control system was introduced through the motor operated doors. The air distribution system contains two central station air handling units located in the Penthouse. Primary supply air is ducted to series fan powered air terminal units with hot water reheat coils. The series fan powered air terminal units provide a constant supply air to the diffusers while allowing the primary air to vary with the space load. The return air is fully ducted within the building.

The domestic hot water is generated by a high efficiency gas fired water heater. The domestic hot water is tempered through the use of a high/low tempering valve assembly and then delivered to the fixtures. The storm water is collected by roof drains and piped to the foundation where it leaves the building. Roof scuppers were used as the secondary storm water system. A sanitary and vent system was provided.

The building is fully sprinklered and contains two standpipe risers. A fire pump was used to maintain the standpipe pressure requirements listed in NFPA. The project includes power distribution, energy efficient indoor lighting, special systems, exterior lighting and an emergency generator for the emergency power system.

Construction Cost: $5.8 million