Questions and Answers - RFI for EMI - HVAC Replacement B456.xlsx
XLSX spreadsheet 9 KB Posted
- Attached to
- EMI Chamber B HVAC Replacement
- Solicitation number
- W91ZLK-25-Q-EMI2
About this file
This is a Questions and Answers document for RFI W91ZLK-25-Q-EMI2 regarding an HVAC replacement project at Building 456's EMI Chamber B. The document contains 11 contractor questions and government responses addressing technical specifications and project requirements.
Key details from the Q&A include: the HVAC unit must provide between 4,000-8,000 CFM of conditioned air, though original submittal and as-built drawings are not available. Programming must be performed on-site with no VPN access allowed. The conditioned space temperature requirement is 70 degrees at 50% humidity, and contractors should assume a nominal 40-ton unit is appropriate. The government will not accept alternative duct protection methods to FlexClad or phenolic duct systems in lieu of sheet metal ductwork. The government denied requests for additional site visits with controls subcontractors and bid date extensions.
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Other files
| File | Type | Posted |
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| Questions Answers - updated 02272025.xlsx | XLSX spreadsheet | |
| Questions Answers - 02262025.xlsx | XLSX spreadsheet | |
| Questions received and responses.docx | DOCX document | |
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| ACC SOW ChB HVAC revised 2-25-25.docx | DOCX document | |
| APG Chamber B HVAC pictures.docx | DOCX document | |
| ACC SOW ChB HVAC revised.docx | DOCX document |
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Questions
| EMI - HVAC Replacement B456 | ||
| project: W91ZLK-25-Q-EMI2 | ||
| Tag | pre-bid question(s) | comments |
| A | Does the GOV have the original submittal for the unit being replaced? We would like to know the exact design CFM and static pressure [and / or range for both] that the replacement unit is expected to achieve. | No, the original submital with static pressure data is not obtainable. The original requirement was for the HVAC unit to provide between 4~8000cfm of conditioned air. |
| B | Does the GOV have a copy of the as-built mechanical drawings for this chamber? If yes, can it be shared prior to bid date? | No, the original drawings are not obtainable. |
| C | Is there a GOV preferred or go to Schneider Electric BAS integrator at this facility that is already familiar with the existing controls for this project? | None. |
| D | For the purpose of programming and commissioning the BAS Controls on this project, will a contractor deployed, temporary remote [VPN] connection be allowed to provide access to an offsite programmer or will this all have to be accomplished at site? | No VPN. Programming to be performed on site. |
| E | Given that the facility is near an operational airport, will the Contractor be required to file an FAA Obstruction Evaluation for crane operations? | No |
| F | In lieu of the FlexClad detail noted in section 4.2.3, can other type of exterior duct protection methods be used such as assembled Tuffduct systems? Will phenolic duct systems be acceptable in lieu of sheet metal ductwork? | No |
| G | If known, what is the R value of the exterior duct's insulation? | Unknown |
| H | The temperature/humidity requirements of 70 deg and 50%- is that space temperature or supply air conditions? | Conditioned space |
| I | There isn't enough information to perform load calculations for the space- is the proposer to assume nominal 40-ton unit is appropriate for the space load? | Yes |
| J | Is it possible to have an additional site visit with a controls subcontractor? | No |
| K | Is it possible to extend the bid date? | No |
File details come from the government source that posted it. Updated .