The Project includes work related to civil, structural, mechanical, electrical, plumbing, fire protection, and architectural elements. The project scope can be summarized as follows: (a) The project includes the demolition and total replacement of the mechanical / HVAC systems and select services for the existing Airport Traffic Control Tower (ATCT). This stand-alone structure comprises approximately 4,800 square feet over six (6) stories. Functions include common horizontal and vertical circulation, personnel break and office space, restrooms, data/communications, electrical and elevator control rooms to support the ATCT “Cab” at the top of the structure. (b) A water-sourced heat pump (WSHP) will serve as the primary HVAC replacement system. The ATCT’s electrical rooms, data/communications rooms, and elevator control room will be served by WSHP units for primary conditioning, and with parallel dedicated ductless split AC systems on at least three (3) floors, including redundancy Invitation to Bid: Airport Traffic Control Tower (ATCT) HVAC Replacement Project 8 and standby. An independent exterior concrete pad will be required to support a cooling tower. Additionally, the ATCT Cab will be provided with redundant/ back-up primary HVAC in the form of a pair of 3-Ton VRF systems dedicated to that space, using ceilingcassette units which fit into a 2x2 foot ceiling grid system. These primary HVAC systems in parallel with the base-building system will be console-type ducted WSHP units for back-up primary cooling and heating, final conditioning of ventilation outside air and supplemental capacity base-loading as needed.
