Atch 7 - Questions and Answers PVD Roof Project.pdf

Questions and Answers

697DCK-25-R-00442 – PVD Roof and Caulk Repair

September 11, 2025

1. The drawings specify Sikalastic® Membrane as the waterproofing system. Should we assume this brand is mandatory (pre-approved), or will equivalent products from other manufacturers that comply with UFC/UFGS standards be accepted?

1a. Waterproofing system meant for flashing and pitch pockets and system must be compatible with roof membrane such that is covered under the system warranty. The drawings call out PVC membrane for the main roof and sikalastic will only be used for flashing such as the cab parapet and pitch pockets. See Polyvinyl-Chloride (PVC) Roofing specification 07 54 19.

2. The SOW calls for Sarnafil Cross Grip Xtra Flexible walkway matting. Would equivalent systems be accepted if they meet slip resistance and durability requirements, and if so, what documentation is required for approval?

2a. Approval will be based on meeting or exceeding the requirements of the walkway mating. See Polyvinyl Chloride (PVC) Roofing Specification 07 54 19 paragraph 2.1 and paragraph 2.10 for requirements.

3. Should the contractor include the costs for temporary utilities (water, power, site internet), or will these be provided on site?

3a. See Temporary Facilities and Controls Spec. 01 50 00 Section 1.2 Charges.

No site internet or power will be provided.

4. What is the approved procedure for bringing lifting equipment (manlifts, boom lifts, scissor lifts) onto the Providence ATCT site at T.F. Green International Airport? Are there specific airport security protocols or FAA access requirements that must be coordinated in advance, or will access be granted on a first-come basis?

4a. See Security Requirements Spec. 01 35 53 for FAA access requirements.

See Summary Spec. 01 10 00 Section 1.10 Permits and Fees for crane permits.

5. For the Tech-Ops building, the SOW mentions stripping and repainting existing door coatings. Please confirm the required paint system (primer, finish type, and color standard).

5a. See Exterior Painting Spec. 09 91 13 Part 3 paragraph 7c. Primer and finish to be Acrylic-Enamel.

6. Is it anticipated that some work may need to be performed outside normal hours (nights or weekends), and if so, will access to the site be allowed during those times?

6a. See Summary spec. 01 10 00 paragraph 1.6.

7. Will the Government provide any materials or equipment, or should the contractor assume responsibility for all?

7a. The Government will not be providing any materials or equipment.

8. Will the lightning protection support poles on the tower roof remain in place during this project? Does the owner require the lightning protection components on these support poles to be replaced?

8a. The current SOW does not call for replacing these poles.

9. The specification calls for a UL letter of findings upon completion of the work. Is the intent to limit the inspection to the roof work and new down conductors shown on the drawings, excluding the existing grounding, utility bonds, and surge protection?

9a. Yes, this is correct.

10. There is a fabric awning at the front entrance of the base building that does not currently have lightning protection. Is this awning excluded from the project scope?

10a. Yes, this is correct.

11. On the Tech Ops building, the current antennas are bonded but are not located within the protection zone of the existing air terminals on this roof level. This complies with NFPA

780 requirements. Will this be acceptable to the owner, or are new air terminals required at a height sufficient to place the Tech Ops antennas within the protection zone?

11a. The requirement in FAA-STD-019G is for the air terminal is to be installed to extend at least 10” above the object they are to protect. New air terminals would need to be installed in this area.

12. The existing lightning protection conduits on the base building and Tech Ops building penetrate the parapet and access the roof less than 1" above the existing membrane. Does the owner intend to install new roof penetration assemblies at these locations to accommodate the roof build-up?

12a. The existing roof penetrations should not be used for the down conductors to transition off the building. A t-style connection should be used and the down conductor fed over the side of the building and eliminate the through wall penetrations.

13. Can exothermic welds be limited to below-grade connections only? There is some indication that exothermic welds may be required above grade in this project, but we do not recommend this due to past incidents of fires on FAA facilities caused by abovegrade exothermic welding.

13a. Exothermic welds are permissible below grade at manned facilities, but should be coordinated with the SSCM prior to performing this work. The use of irreversible c-crimps is recommended for above grade connections to mitigate risk.

14. Can UL96A Class II clamps be used for above-grade cable connections, or does the owner require high-compression crimps?

14a. Irreversible c-crimps are preferred over mechanical connections.

15. Is it the owner’s intention to install one new down conductor on the tower and two new down conductors on the EG building?

15a. Yes, this is correct.

16. On the tower, the notes call for horizontal lightning rods in a loop at 16'-4" above grade.

Does this location require a horizontal Class II copper conductor to connect the horizontal rods, and should the rods be spaced every 20'?

16a. The air terminals are to be placed on the corners of the tower at the 16’-4” level and be interconnected with a horizontal class II copper conductor. The down conductors are to be terminated to this horizontal loop as they continue down to the EES.

17. Are horizontal rods also required at the catwalk and upper tower roof equalization loops?

17a. Yes, horizontal air terminals are required at these equalization loops.

18. The base building, Tech Ops building, and EG building are below standard Class II requirements. Does the owner still require Class II components for these roof areas?

18a. Yes, all lightning protection installed is to be Class II components.

19. Will aluminum components be permitted where required on galvanized, metal, and aluminum surfaces, in order to comply with UL and NFPA 780 requirements?

19a. According to Systems Engineering, tinned copper is acceptable to be used on galvanized surfaces. Aluminum components is to be used on aluminum surfaces.

20. Are industry-standard adhesive fasteners such as the FL4C permitted on this project (see: https://ecle.biz/product/FL4C/)? If not acceptable, is the FL7B fastener (see:

https://ecle.biz/product/FL7B/) allowed as a membrane fastener? This issue has arisen on previous FAA projects, and the cost difference between the two fasteners is significant.

10a. Per FAA-STD-019G 4.3.7.1 prohibits the use of cable holders with fold-over or break-away tabs. Keufler Lightning Protection makes an A711, C711, and C711T that have been used on other LPGBS projects.

21. Do the Superintendent, SSHO and QC Manager need to be 3 separate individuals?

21a. See Project management and Coordination Spec. 01 31 00 Section 1.5.

Project Manager role may also include Scheduler. Project Superintendent role may also include QC manager and Safety manager. If performance is not satisfactory additional individuals may be required to assure quality and safety requirements are met.

22. Are third party inspections required?

22a. Third party inspections may be required for equipment supports per Roof Accessories specification 07 70 00 but not for roof assembly.

23. Can the period of performance be extended after award once the material/equipment lead times are confirmed due to current market conditions for the equipment for this project?

23a. Project to be awarded in the fall and construction to begin in Spring 2026 this should provide ample time for material / equipment.

24. Please provide the site visit attendee sign in sheet.

24a. See attached sign in sheet.

25. Please provide bidding quantities for deteriorated underlayment.

25a. Assume no deteriorated underlayment.

26. Please confirm whether asbestos or lead is present on this project, and if so, provide the relevant documentation.

26a. PVD Specifications Attachment 1 provides the Sika Roof Report. No asbestos present. Lead testing has not taken place FAA will be testing provide pricing for with and without lead.

27. Demolition drawing PVD-1800508-A141 (Sheet 14) calls for 20 year roof warranty. Is it correct we need a 25 year roof manufacturer warranty?

27a. Correct, we need a 25 year warranty.

28. Drawing PVD-1800508-A206 Calls for Dryvit system over concrete block however, the specification 09 24 00 calls for plaster over cmu. Which system do we use? If dryvit, which system within dryvit such as drainable mat system etc?

28a. Use the Dryvit system called out on drawing PVD-1800508-A206. Patching to be compatible with Dryvit. Clean in accordance with manufacturer’s recommendations.

29. Detail 6/A600 calls for R30 Rigid Insulation. Is R30 the correct insulation value that is requested throughout all buildings?

29a. This correct R30 Rigid Insulation to be used.

30. Is the rigid insulation board: Polyisocyanurate (ISO) board, Extruded

Polystyrene (XPS), or Expanded Polystyrene (EPS)?

30a. Rigid Insulation Board to be per manufacturer’s recommendation and meets system warranty requirements.

31. Will all the equipment on the roof require electrical disconnect and reconnect?

31a. The roof will not require electrical disconnect and reconnect. Equipment has flexible connections and will allow equipment to be moved to allow for flashing without disconnecting. Electrical equipment (conduits) can be raised up (cribbed). HVAC units on seats will have to stay and work around.

32. Is there a need for offerors to bring anything up to current codes?

32a. Roofing assembly to adhere to current codes

33. Will shop drawings for the lightning protection be required?

33a. Shop drawings are recommended, but not required.

34. Can the existing ground cores be used for the new lightning protection or will system need to be completely new?

34a. Existing air terminals, bases, and components can be used if in good condition. Damaged components or those with heavy oxidation should be replaced.

35. In order for offerors to present their strongest solution, will the government grant a 10-day proposal extension?

35a. The government will grant a 10-day proposal extension if needed.

36. Is there a requirement for a Site Superintendent, Site Safety and Health Officer and Quality Control Manager to be on site full time?

36a. See Project management and Coordination Spec. 01 31 00 Section 1.5.

Project Manager role may also include Scheduler. Project Superintendent role may also include QC manager and Safety manager. If performance is not satisfactory additional individuals may be required to assure quality and safety requirements are met.

37. Are these three separate roles or can they be filled by one or two people?

37a. See Project management and Coordination Spec. 01 31 00 Section 1.5.

Project Manager role may also include Scheduler. Project Superintendent role may also include QC manager and Safety manager.

38. What is the estimated timeframe for vetting of workforce by FAA?

38a. See Security Requirements Spec. 01 35 53 Section 1.4 for time frames.

Only limited badging will be allowed for key personnel. FAA will provide escorts.

39. Is there a cost associated with offerors receiving security badging?

39a. See Security Requirements Spec. 01 35 53 Section 1.4i. It states “Contractor shall coordinate the badging process with the FAA Regional Office in Burlington, MA. Processing of the forms will be performed by the FAA at FAA expense. The FAA will not pay for fingerprinting service but does offer fingerprinting at the Regional Office at no cost.” FAA will only approve limited badging based on the duration of this contract. Likely only superintendents and project manager.

40. Who is the Incumbent?

40a. There is no incumbent contractor, this project is new.

41. Past Contract Award #?

41a. See answer to 40.

42. Has the budget been approved for this contract?

42a. A specific amount of funding has been set aside for this project for FY 25.

43. Is there a scheduled site visit day, date and time? Apologize if I overlooked it.

43a. The site visit for this project already took place, however, the site visit attendee list is attached.

44. Do you have the pricing template in an Excel, pdf or another form to submit back in a clean format?

44a. No, the offeror is responsible for proving their own template.

45. Are we re-using the existing down-connectors and ground and just installing a new lightning protection and connecting them, or do you want us to replace everything including the down & ground?

45a. I am assuming the question refers to the existing two down conductors and whether to replace them. The existing down conductors are to remain and one additional down conductor installed. The new down conductor would be routed down the tower, connected to a 4/0 AWG copper conductor at approximately 18” above grade extended and bonded to the EES.