| 3/10/2021 | 28 31 00 - Alarm Detection | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 36 00 - Data and Voice Equipment | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 16 00 - Communications Connecting Cords Devices and Adapters | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 15 00 - Communications Horizontal Cabling | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 13 00 - Communications Backbone Cabling | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 11 00 - Communications Equipment Room Fittings | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 27 05 43 - Underground Ducts and Raceways for Communications Systems | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 26 24 13 - Switchboards | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 25 51 00 - Integrated Automation Facility Controls | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 73 00 - Air Handling Units | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 36 16 - Variable Air Volume Units | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 25 00 - HVAC Water Treatment | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 09 33 - Variable Frequency Drives | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 05 93 - Preparation for Testing, Adjusting, and Balancing for HVAC | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 05 93 01 - System Testing | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 23 00 00 - Heating, Ventilation & Air Conditioning (HVAC) | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 3/10/2021 | 22 00 00 - Plumbing General System Designs | Section replaced | Section updated/added to 2021 version | Addendum #6 |
| 12/1/2020 | 07 52 16 - Bituminous Membrane Roofing | Section replaced | Section updated | Addendum #5 |
| 3/11/2020 | 23 09 03 - VFD Specifications | Section replaced | Section updated | Addendum #4 |
| 2/17/2020 | 10 14 02 - Building Name Exterior Signage | Section replaced | Section updated | Addendum #3 |
| 2/17/2020 | 10 14 01 - Exterior Site Signage | Section replaced | Section updated | Addendum #2 |
| 2/7/2020 | 01 78 23 - TXST FM Data Requirements | Section replaced | Section updated | Addendum #1 |
