Questions Answers - updated 02272025.xlsx
XLSX spreadsheet 2 MB 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 solicitation W91ZLK-25-Q-EMI2 regarding an HVAC replacement project at Building 456's EMI Chamber B at Aberdeen Proving Ground. The document contains 30 questions and answers covering technical specifications, site conditions, and project requirements.
Key details from the Q&A include: the HVAC unit must provide 4,000-8,000 CFM of conditioned air; original submittals and as-built drawings are not available; programming must be done on-site with no VPN access allowed; the conditioned space temperature requirement is 70 degrees at 50% humidity; contractors should assume a 40-ton unit is appropriate; MegaPress pipe fittings are acceptable for propane piping; new ductwork is required from the HVAC unit through the Quonset hut wall to approximately 6 feet inside; and the existing fuel tank will remain government property after removal. The electrical panel is approximately 76 feet from the unit location, and all control points must be monitored through the Building Control System (BCS) for system control.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| Questions Answers - 02262025.xlsx | XLSX spreadsheet | |
| Questions received and responses.docx | DOCX document | |
| Questions and Answers - RFI for EMI - HVAC Replacement B456.xlsx | XLSX spreadsheet | |
| Questions received and responses.docx | DOCX document | |
| 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 |
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
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 | |
| L | Will the GOV recover the fuel left in the existing fuel tank prior to demo? Will this existing fuel tank need to be removed from the facility or will the GOV keep the tank after it's been removed from the pad? | Oil will be removed. The Gov will maintain ownership of the tank. | |
| M | Once the existing heating and cooling equipment is removed, the chamber will be left without heating or cooling. Depending on ambient conditions, is there a requirement for temporary cooling or heating the chamber during the project duration? | No, depending on ambient conditions the chamber may be off line. | |
| N | Will the GOV accept MegaPress pipe fittings for the new propane piping to and from the new HVAC unit and the propane tank? | Yes | |
| O | Can the GOV confirm the new BAS Controls' touchscreen HMI can be installed on the existing BAS panel door, if space allows? This new item would be installed to replace the existing TAC HMI. | Ok to install new interface on existing panel door. There is 5.5 inches of clearance between the inside face of the panel door and the surface of the existing control board. | |
| P | Since photography was not allowed during site visit, can you please send us some photos of the unit and the tank with their name plate details. | ERROR:#VALUE! | ERROR:#VALUE! |
| Q | Is there any as built available | No | |
| R | Electrical scope is only wiring the new unit, is there the breaker ned to be changed. | Depends on the amp load for the replacement unit | |
| S | Approx how much distance is between electrical panel and unit | Approximately 76' | |
| T | Where does the BCS system located and how far is the distance? Is the BCS controller is there near the unit | Question is unclear. | |
| U | Is the BCS only monitoring the system or all points to be monitored and should be able to control from BCS system | All points need to be monitored so the BCS could control the system. | |
| V | Any fees for security clearance and what level of security clearance is required. | No fees. You are not obtaining a security clearance. | |
| W | Existing unit is only oil fired or gas is used since we saw a propane tank. | Question is unclear. | |
| X | Is this existing tank also to be removed from site along with HVAC unit? | As for the fuel oil tank: No, Gov. will maintain ownership of tank. | |
| Y | what is the scope of ductwork, do we have to replace the entire ductwork with new ductwork. | New ductwork is to be from; new HVAC unit thru Quonset hut wall to duct joint ~6' inside wall. | |
| Z | What software to be used for drawings? AutoCad? | Nothing specified. | |
| AA | Third Party Commissioning is required? Or test and acceptance witnessed by Proving Ground Engineer is Ok? | No. Proving Ground Engineer. | |
| AB | How may copies of drawings and final documentation to b provided? | Three | |
| AC | Do you have any installation and handover commissioning date? or we have to develop after the project is awarded? | Develop reasonable timeline after award. | |
| AD | Do you need any inspectors and supervisor full time on site or need basis. It is understood that project Manager will be assigned by contractors to coordinate site activities and to coordinate with APG COR and CO | Probably not required full time. |
File details come from the government source that posted it. Updated .