Questions and Answers.pdf

Questions and Answers associated with 36C24821R0082 NRM (PROJ: 548-18-

605) Replace Air Handling Units 9, 15, 17, 24, 28,29, 34, and 39.

1. Will we be able to use a crane to set up the equipment to floor 2, 3 and 4?

Answer: Yes.

2. What type of temporary cooling equipment will be acceptable? (Spot coolers, temporary AHU, etc?

Answer: Design Temp air system to meet the required air volume, discharge temp as well as static pressure.

3. Please confirm the current BAS system installed.

Answer: Siemens.

4. What are the current AHU’s CFM’s and capacity?

Answer: See solicitation attachment 1.

5. Please confirm if Storage/Office space and Staging area be available.

Answer: Storage/Office and staging location will be determined after award.

6. With working 1 AHU at a time the remaining AHU will need to be stored on site.

Answer: Contractor is responsible for storage of AHUs until they are installed.

7. Please confirm if asbestos is present on building.

Answer: The building was built in 1990 appears to be no asbestos.

8. Please confirm that demolition will be also 1 AHU at a time.

Answer: AHU’s are being replaced one at a time.

9. What are the current DDC to be replaced?

Answer: Please read solicitation. See solicitation, A.4, #2, page 7.

10. Please confirm BAS controllers currently installed. Will they be replaced?

Answer: Please read solicitation. See solicitation, A.4, #2, page 8.

11. Please identify acceptable BAS devices manufacturers.

Answer: BACnet compatible.

12. Please confirm current Cooling Tower Capacity and quantity.

Answer: This is not applicable, AHU capacities are identified within attachment 1.

13. Is TAB being considered in scope of work?

Answer: Please read the solicitation, Technical Information Library Specifications were included in the RFP.

14. How much liability insurance to be considered?

Answer: Please read solicitation, 4.10, page 47.

15. Is bid bonds and payment and performance bond to be included?

Answer: Bid bonds, payment and performance bonds are required as part of phase 2 not phase 1.

16. Please confirm that the SSHO and Superintendent must be two different people.

17. Answer: Yes.

18. Please confirm that the contractor must carry commissioning agent.

19. Please confirm that the contractor must conduct a pre-Test and Balance prior to starting any work.

20. Please confirm if the existing pneumatic controls are to be reused or if electrical controls will need to be installed.

Answer: Please read solicitation. See solicitation, A.4, #2, page 7.

21. Formatting restrictions (Phase I, section i, "Formatting and Other Restrictions", page 11 of 75) indicate 12-point font for the technical approach. Please confirm that this font formatting requirement does not apply to headers, footers, images, or other proposal sections.

Answer: This specification is applicable to i. Technical Approach only.

22. Phase I, Subfactor II on page 12 of 75 identifies that "The response shall include subcontractors meeting the threshold of $250,000.00 or greater, identifying the subcontractor’s overall value of the work along and their primary work activities for this project."

Answer: The expectation is that an estimated value in dollars of overall subcontracted work along and their primary work activities for this project is to be identified for contractors meeting the threshold.

23. Can the experience information sheet (Attachment J) be expanded or in contractor format if it includes the same information?

Answer: No, contractors are to provide in format of attachment J.

24. What mechanical controls system is currently in place? Please provide a point of contact for the existing system, as possible.

Answer: BAS is Siemens.

25. Verify that the Owner will be responsible for removing ALL equipment, unbolted furniture, personal effects, etc. from the affected areas prior to construction.

26. Has the facilities ICRA team assigned classifications to the affected and adjacent spaces to set the level of infection control measures to be put in place by the general contractor?

Answer: ICRA will be determined for each AHU jointly between VA and awarded contractor.

27. Who does inspection and permitting of Infection Control?

Answer: Contractor required to have approved safety infection control program to be inspected daily by Medical Center.

28. What are the work hours during construction?

Answer: Please read the solicitation. Refer to A.4, #2, page 8.

29. Has a Limited Source Justification (FAR 6.302-1(c), 6.303) been prepared for any materials identified under this solicitation? If so, identify which systems to which they apply and provide all related documentation, including any required Approval (FAR 6.304) or Certification (FAR 6.303(b)(12)).

Answer: No, not applicable.

30. Who is the manufacturer of the existing HVAC Controls?

Answer: Not relevant.

31. Provide available system information for subject Air handlers including design schedules.

Answer: Please read the solicitation. Please see attachment 1.

32. Provide facility chilled water data including entering and leaving water temperatures.

Answer: Entering 46 degrees leaving 58. See original Design H3 drawing attached.

33. Provide structural drawings and information pertaining to the low roof areas adjacent to the areas of work.

Answer: No roof work necessary.

34. Provide structural drawings for general building for coordination purposes.

Answer: Additional As-Built drawings will be provided to awarded contractor.

35. It is understood that construction work shall occur after hours to minimize disruption. What is the maximum down time during this period allowed for the operation of system turnover to and from temporary cooling?

Answer: Each unit has unique criticality, down time to be minimal in critical areas during change over to temp air.

36. Are these direct AHU Replacements meaning:

a. No Structural changes?

b. Reuse of existing roof curbs?

c. Electrical feeds remain as is?

Answer: See solicitation documentation.

37. Are existing units VFD driven? If so, are the VFD’s part of the unit or separate?

38. Are existing units part of a VAV system?

39. Do the existing units have an economizer?

Answer: No.

40. Are the units custom built made or “off the shelf” standard products?

Answer: They need to be designed per the specifications on attachment 1.

41. Are existing as-build drawings available, All trades?

Answer: Yes, VA cannot guarantee accuracy.

42. How old is the roof and is it under warrantee? If not, who is the manufacture?

Answer: IB Roof Systems, warranty expires Dec 31, 2027.

43. Should there be any concerns regarding outside air opening locations in proximity to other openings or exhausts?

Answer: No.

44. Are any additional features, such as UV-C disinfection, higher air filtration, or increased ventilation required in lieu of the COVID-19 pandemic?

Answer: See the Technical Information Library Specifications attached to the solicitation. Specifically, section 010000, 1.3 as well as within specifications 001121.

45. Existing controls appear to be pneumatic. Will the new controls be fully pneumatic or electric with pneumatic interface?