| Description of Project: | Adjacent Central Station Air-Handling Units S-1 and S-2 located in the Basement mechanical space need to be replaced as they are beyond the expected life and are not performing to the Building’s current operational needs. Base Project – Replace all components and sections of each of the air-handling units Performance Hall AHU (S-1) and Classroom AHU (S-2). We anticipate reusing the fans, supply and return (non-adjacent) as they appear to be in good condition. Additional Work under the Base Project:; 1. Removal of associated connected ducts, pipes, dampers, and control elements.; 2. Install new AHU components incorporating panelized construction. Include connections to existing ductwork and piping. Include associated dampers and control elements in design.; 3. Design and install a new steam to hot water heat exchanger with pumps and piping to provide hot water to each new AHU heating coil(s).; 4. Provide sound attenuation (at a minimum) on and / or around the existing return fan (S1 located in the Basement).; 5. Provide direct digital control (DDC) for AHU elements such as fans, hydronic control valves, and humidifiers etc.; Compliance is expected for the UIUC Standards, mandated codes, ASHRAE 90.1; (compliance is expected with ASHRAE 62.4 and 55 guides).; Appropriate professional design and due - diligence is expected for assurance to the Music Department this Project will not only maintain but also, aid and empirically improve the attenuation of the associated Project's mechanical systems. It is our intent that the design of / and replacement of the 'AHUs', required transitions, incremental added equipment etc. produce the same or less noise at the inlet and outlet of each new unit/component based on readings taken at the inlet and outlet of each the existing units (prior to demolition). |