Bid document

Question & Answers
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RFI 1 - Sealing Existing Wrapped Ductwork
The Statement of Work requires sealing all ductwork in the attic and mechanical rooms. The existing ductwork is externally insulated with duct wrap, which conceals many joints and connections. Please clarify whether the contractor is required to remove or pull back existing insulation to expose and reseal concealed joints throughout the duct system, or whether sealing is limited to accessible connections and identified leakage locations.

Seal all identified duct leakage points and restore any damaged or missing insulation and insulation components.
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RFI 2 - Existing FSK Tape and Insulation Jacket Repairs Several areas of existing FSK facing tape were observed peeling or partially detached while the insulation remains in place. Please clarify whether all loose or deteriorated FSK tape throughout the existing duct system must be repaired or replaced, or whether repairs are limited to locations where the insulation jacket is compromised.

Seal all identified duct leakage points and restore any damaged or missing insulation and insulation components.
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RFI 3 - Existing Common Return Air System
The Statement of Work requires modification of the existing return air system to eliminate the common return serving both air handlers. During the site visit, we observed that both air handlers are installed side by side on a shared return air platform. The primary return is located in the adjacent hallway and enters the common plenum beneath the equipment. Additional return connections include a 10-inch round duct routed through the attic to a lobby filter grille and a 14 x 14 grille located in the front of the platform within the mechanical room. Due to the existing configuration, installing a partition between the air handlers would restrict one unit’s access to the primary return, potentially resulting in inadequate return airflow. The limited mechanical room space, adjacent doorway, existing piping, ductwork, and electrical components also restrict the ability to expand or relocate the platform.
Please provide direction on how the required separation of the return air systems is to be accomplished while maintaining adequate airflow to both 5-ton systems. If modifications to the existing platform, return ductwork, or building are required, please provide the intended configuration so that all bidders can accurately price the required work.

The contractor is responsible for proposing a solution that eliminates the