657-21-106JB - RFI Prebid Jan-2023 Questions.docx

RFI’s Pre-Bid

1. Infection control on the roof – please clarify

a. Page GC113, Infection Control Note 1. See Exterior ICRA document (attached)

2. Infection control – Are ICRA walls required?

a. Page GC111, GC112, GC113, Infection Control Note 1.

3. Are there structural drawings available?

a. Yes, See attached documents from when buildings were built.

4. Will new structural steel be required for any of the units as we see no new structural steel plans.

a. Provide additional support frame steel for units: 53-AH-2, 53-AH-3.

b. Steel to match existing beam sizes, welded as extensions onto existing frames, half of needed extension length added to each end to minimize distances.

c. For other units the existing steel support structure for air handling units is to be reused.

d. If final approved air handlers differ from basis of design and exceed existing conditions, then refer to “Sheet M-400 Air Handler Schedule Note 1” to provide additional steel and/or curb adaptors.

e. Basis of design dimensions. Exact dimension to be field verified.

5. Please specify new curbs or curb adapters for units on BLDG 53.

a. Provide new curb for units: 53-ERC-5, 53-AH-4

b. Provide curb adaptor for units: 53-ERC-5. 53-ERC-1

c. For other units provide curb adapters if needed, as the existing roof curbs are to be reused.

d. If final approved air handlers differ from basis of design and exceed existing conditions, then refer to “Sheet M-400 Air Handler Schedule Note 1” to provide additional steel and/or curb adaptors.

6. On drawing GC107 shows an ALT for TEMP AHU BLDG 53 PHASE 1 – How would you like this priced as there is no alternate bid listed in the bid form.

a. Bid item added to page 5. Please replace page 5 in the solicitation with the attached.

7. Can we use grooved steel in lieu of welded steel for the chilled and glycol water?

a. No. Welded is a site-specific requirement. Per specifications 23 21 13.

8. Can we use Press fittings for copper tubing in lieu of solder on the chilled water?

a. No. Solder is a site-specific requirement. Per specifications 23 21 13.

9. Can you provide piping sizes for the chilled water lines serving Units 52-AH-1, 52-AH-S2 and 52-AH-4?

a. 52-AH-1: 2-1/2” supply and return.

b. 52-AH-S2: 1-1/2” supply and return.

c. 52-AH-4: 2” supply and return.

10. Can you provide sizes for the steam and the steam condensate return serving the humidifier coils in Units 53-AH-2, 53-AH-3, 53-AH-4 and 53-AH-5?

a. 53-AH-2: 2” LPS and 1” LPR

b. 53-AH-3: 2” LPS and 1” LPR

c. 53-AH-4: 1-1/2” LPS and ¾” LPR

d. 53-AH-5: 1-1/2” LPS and ¾” LPR

11. Can the Site Superintendent serve as the Site Safety Officer and on-site Quality control manager?

a. No, Production positions may not be mixed with Quality or Site Safety positions.

12. Is there currently a roofing warranty on any of the roofs we will be working on for this project?

a. Unknown at this time.

13. Is there a NESHAP survey available currently for this project?

a. See Reports attached.

14. Four hours listed for unit swap over on the plans is not feasible to get the items running correctly. For things to be correct we are requesting an 8-hour swap over timespan.

a. Yes, an 8-hour swap over timespan is acceptable. Ensure patient rooms maintain proper air exchanges and conditioned air. Ensure swap over timespan is during moderate climate season.

15. Please clarify the project duration as multiple dates are listed in several places. We believe that the larger equipment will have a led time of approximately a year. This would cause the project to be a two-year duration.

a. Project duration depends greatly on the lead times of equipment. Please indicate a proposed schedule duration, as this will be part of the proposal review by the board. There will be a maximum of 2 year completion for this project.

16. Will temp units be required for the units that were found not to be running during the site visit?

a. Yes, temporary units will be necessary during the replacement time frame for units that were found not to be running during the site visit.

17. Isn’t is a conflict of interest for the GC to carry the commissioning agent. Typically we see the VA carry the commissioning agent.

a. The cost of the Commissioning Agent will be under the Construction Contractors Cost.

18. What size do the generators for the temp units need to be?

a. Reference sheet E-400 for temp generator sizes. Exact generator sizes shall be coordinated with mechanical contractor for unit furnished.

19. What areas will after hours or weekend work be required?

a. As these are 24/7 patient areas the working hours must be coordinated with Service in the buildings. Expect a 21 day coordination time prior to start of project. Weekends and after hours will be necessary throughout the project.

20. Please provide Electrical Data for Bldg 52, Temp -AHU.

a. Basis of design listed below. Exact generator sizes shall be coordinated with mechanical contractor for unit furnished.

21. No pipe sizes are indicated on the plans. Please request updated plans with pipe sizes or schedule a site visit.

a. Pipe sizes indicated in keynotes and above responses. Updated construction plans will be provided after award of project. Estimate pipe sizes per VA design standards and per site investigation.

22. Detail #3 on 52-FD100 appears to indicate (2) disconnection points which leads me to believe the piping in question supplies areas outside the scope of work. Will there be a need to keep those areas (outside the scope of work) in service throughout the duration of the project? Please verify

a. Yes, all existing operating areas outside of the scope of work are to remain operational throughout the duration of project.

23. It is assumed the other areas Detail #1 on 52-FD100, Detail #1 on 52-FD101 can remain out of service for the duration of the project. Please verify.

a. Non-service is to be limited to minimum time required for demolition of existing sprinkler system and installation of new sprinkler system.

24. According to the plans, Fire Protection scope has been identified in building #52 only. Please verify.

a. Correct.

25. What is the expected start date for our demolition?

a. Expected start date for demolition is pending replacement equipment availability and agreed upon construction schedule.

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