Attachment 0003B - Drawings_Rev1.pdf

This is a comprehensive bid set of architectural, mechanical, structural, electrical, and hazardous materials drawings for the replacement of five Air Handling Units (AHUs 2, 3, 5, 17, and 19) at the Joseph Maxwell Cleland Atlanta VA Medical Center, located at 1670 Clairmont Road, Decatur, Georgia 30033. The project is designated as 508-24-102 and involves work on the Clinical Addition building across Basement (Level B1), First Floor (Level 1), Fourth Floor (Level 4), and Roof/Penthouse levels, encompassing approximately 8,500 square feet.

The scope includes demolition of existing AHUs and associated ductwork, piping, and electrical systems, followed by installation of new modular AHUs capable of fitting through existing doorways without building modifications. The project requires phased temporary AHU installations to maintain HVAC service during replacement work, with temporary equipment located on exterior patios and roofs. Key requirements include Infectious Control Risk Assessment (ICRA) Class II and III containment protocols, lead paint abatement for AHU exteriors in basement and penthouse locations, fire life safety compliance per NFPA 101, and connection to existing chilled water, steam, and condensate return systems. New control systems must integrate with the existing Climatec Building Automation System via BACnet or approved protocols. Electrical work involves VFD-driven supply and exhaust fans (ranging from 20 to 80 HP), new circuit breakers, fused disconnects, addressable duct smoke detectors integrated with the Siemens Desigo fire alarm system, and temporary 30 kVA transformer installations. The contractor must submit critical submittals within 45 days of Notice to Proceed, and all demolition and installation work is prohibited until approvals are received. Hazardous materials include white lead-containing paint on AHU exteriors requiring containment and decontamination facilities with negative air machines and personal protective equipment protocols.