11-1204B_Site Visit RFI List of Questions.pdf

FA461018R0015

XUMU 11-1204B, Repair HVAC, Bldg. 13730

Site Visit RFI List of Questions:

1) Will the area be occupied during construction? Phasing required?

Answer: The area will be occupied always, contractor needs to accommodate their work and schedule to comply with the building mission.

2) On sheet E-100, the existing power pole is shown to be in the future expansion area, however the actual location is on the edge of the future expansion area. Will the power pole need to be moved or remain in place?

Answer: The power pole will remain in place.

3) Can the Superintendent act as the QC and SSHO?

Answer: No, in accordance with the Statement of Work paragraph 2.4.1 “The SS and QCM shall be two separate individuals unless expressly allowed for otherwise according to the

30CES PM and 30CONS Contracting Officer.”

4) Are after hours, weekend, or night work required?

Answer: No, contractor will work regular hours.

5) Can 4-ten hour days be worked?

Answer: 5-eight hour days are preferred, but 4-ten hour days may be approved.

6) Will security escorts be required during construction?

Answer: No

7) Is there currently a DDC system in place? Will the new system be required to be connected to a DDC system?

Answer: No, only local wall thermostats will work for this project.

8) Is commissioning required for the new HVAC system? If so does commissioning need to be completed by a 3rd party?

Answer: Yes commissioning is required. Contractor needs to comply with commissioning standards for the unit set by manufacturer and comply with all applicable codes.

(1) All design/construction shall comply with DoD Unified Facility Criteria (UFC) and

Unified Facility Guide Specifications (UFGS)

(2) All Design/construction shall comply with the VAFB Facilities Excellence Standards

(3) All design/construction shall comply with local, State and Federal standards included but not limited to those outlined in attached specifications

9) Does BC-1, BC-2, and BC-3 need to comply with the class 1 Div. 1 explosion proof requirement? EF-3 references explosion proof specs on the supplied drawings that serves the same space as BC-3. Please confirm that the EF-3 unit will be the only explosion proof

HVAC equipment required for this project.

Answer: AE is responsible to verify all the information from drawings in the field, the SOW states: (1) Review, revise, update and complete the current design.

AE needs to comply with all codes that apply for the building.

(1) All design/construction shall comply with DoD Unified Facility Criteria (UFC) and

Unified Facility Guide Specifications (UFGS)

(2) All Design/construction shall comply with the VAFB Facilities Excellence Standards

10) Will the vault require AC or ventilation?

Answer: Yes it has to have ventilation with a switch to close outside air, switch needs to be inside dispatch center

11) Will temporary AC or Heating be required in any space in this building during construction or after demolition?

Answer: Yes, contractor needs to Consult with the NFPA and comply with all the requirements for the building.

12) Will duct security bars be required for trunk lines entering any spaces in the building?

Answer: AE needs to comply with all codes that apply for the building.

(1) All design/construction shall comply with DoD Unified Facility Criteria (UFC) and

Unified Facility Guide Specifications (UFGS)

(2) All Design/construction shall comply with the VAFB Facilities Excellence Standards

13) Will fire dampers be required for trunk lines or registers entering any spaces in the building?

Answer: The building occupant requested emergency controls in the operations room to permit closing of outside air intakes to server and Comm room, the contractor needs to

Consult with the NFPA and comply with all the requirements for the building.

14) BC-3 on the drawings is located where currently in the filed a fire riser is located and fire alarm panel. We are assuming this was an error on the drawings and those items will not be relocated to accommodate BC-3. Please confirm BC-3 will need to move its current location from what’s on the drawing.

Answer: AE is responsible to verify all the information from drawings in the field, the SOW states: (1) Review, revise, update and complete the current design.

15) Will the servers in the comm. room be relocated during construction? If not, will they require temp AC?

Answer: The servers are not moving, temporary cooling will be needed.

16) Is a factory startup and testing required for the HVAC units? Can the Mechanical Contractor perform the startup?

Answer: Yes commissioning/startup is required. Contractor needs to comply with commissioning standards for the unit set by manufacturer and comply with all applicable codes. If contractor can comply with all the codes needed and can certify the equipment, they can perform the startup.

17) Are aluminum marine coated condenser coils sufficient for the outdoor units?

Answer: It’s not required, but it would be good idea to coat the condenser.

18) Are the indoor evaporator coils to be marine coated the same as the outdoor units?

Answer: No need to coat the indoor unit (Evaporator)

19) Does the TAB contractor need to be a direct sub to the GC?

Answer: The testing adjusting and balancing contractor needs to be a certified contractor that will provide the services in a timely manner and will not delay the project. The AE is responsible to manage the risk of the project and maintain control of the critical path of the project.

20) Is it known if ACM or lead based paint is present at this facility pertaining to the mechanical scope? Items to be demolished? Is there a hazardous material survey report available?

Answer: Environmental compliances will provide any environmental surveys to the contractor of the building 13730 during their site investigation.

21) We are requesting that the period of performance be changed from 270 calendar days to 365 calendar days due to Design requirement and long lead procurement items.

Answer: Per the SF1442 the 270 calendar days is negotiable.

22) Will a third party Fire Protection Engineer be required?

Answer: AE is responsible

23) Please provide LBP/ACM survey for this project.

Answer: Environmental compliances will provide any environmental surveys to the contractor of the building 13730 during their site investigation.

24) Is there any As built Drawing available for this building?

Answer: See attachments

25) Is a Network-type BACnet DDC System (HVAC Control System) required, desired or acceptable?

Answer: Local thermostats will work for this building.

26) If an HVAC Control System is utilized, is a connection tie-in to the Base EMCS/UMCS required?

27) If an HVAC Control System is utilized, which manufacturer(s) is (are) preferred and/or acceptable?

28) Would a 100% redundant Variable Refrigeration Flow (VRF) system be an acceptable

HVAC option?

Answer: AE is responsible to install and HVAC system that complies with requirements establish in the SOW and comply with all the codes that apply for the building.

(1) All design/construction shall comply with DoD Unified Facility Criteria (UFC) and

Unified Facility Guide Specifications (UFGS)

(2) All Design/construction shall comply with the VAFB Facilities Excellence Standards

29) Future Expansion of Bldg 13730 was discussed, is there any design work needed to prep for future expansion?

Answer: No.

30) Floor plans vary between mechanical and electrical floor plans. Does one floor plan take precedence or is it up to the designer?

Answer: Up to designer

31) In the mechanical room there exists a fire protection panels and fire riser. On sheet M101 the

Blower Coil Units (BC-3) are shown where the fire equipment is currently located. Is the intent to relocate fire equipment to make room for the BC units?

Answer: AE is responsible to verify all the information from drawings in the field, the SOW states: (1) Review, revise, update and complete the current design.

Use of existing condition data provided by the Air Force conveys acceptance and as such does not relieve the Contractor of liability associated with performance as the Engineer of

Record. The Contractor shall be solely responsible for verification and validation of existing conditions, coordination of existing conditions in parallel with proposed requirements, and above and below-grade condition assessment.