BID - Addendum 6

Description

Alabama Port Authority Project Name McDuffie Terminal Improvements – New Assembly and Shop Buildings Location Mobile, Alabama Project # 11411 Task # 3 April 2, 2026 Addendum 6 1|P a g e ADDENDUM NO. 6 Item Description DIVISION I – BID DOCUMENTS No additions DIVISION II – CONTRACT DOCUMENTS No additions DIVISION III – SPECIAL PROVISIONS No additions DIVISION IV – GENERAL PROVISIONS No additions DIVISION V – CONSTRUCTION SPECIFICATIONS No additions NOTES 1 Drawing ES-101 – Site Electrical Plan – Rev 2 2 Drawing E-300 – Electrical Riser Diagram & Details – Rev 1 3 Drawing E-303 – Fire Alarm Riser & Lighting Schedule – Rev 3 4 Revised HVAC control system description attached. The controls contractor is responsible for installing all of his necessary raceways and wiring needed to accomplish the required work. 1.0 HVAC CONTROL SYSTEM DESCRIPTION A. General: The control system shall consist of a high-speed, peer-to-peer network of DDC controllers, an existing control system server, and integration to the existing Automated Logic WebCTRL web-based operator interface including all system graphics, sequences of operation and integration of the new building’s mechanical equipment HVAC controls. The WebCTRL system server is located in the International Trade center and this addition shall communicate to this system via the Owner’s Local Area Network and/or the Internet as required by the Owner’s IT Department. B. The control system server shall be accessed using a Web browser over the control system network, the owner’s local area network and (at the owner’s discretion) over the Internet. The server shall also act as a “workstation” when running as a server/client platform. No special software other than a Web browser shall be required to access graphics, point displays, and trends, configure trends, configure points and controllers, or to download programming into the controllers from the existing WebCTRL BAS software C. System shall use BACnet protocol for communication between the control modules and web server. Input/Output points, schedules, setpoints, trends, and alarms specified in the project Sequences of Operations for HVAC Controls shall be BACnet objects. D. Thermostats should be BACnet thermostats and be furnished by the HVAC controls contractor. Any ductless mini splits will have factory furnished thermostats but should also have a BACnet communication card furnished with the unit(s) by manufacturer. E.