QA4 - 103.pdf

Q4. Can the government extend the RFI deadline to Monday, July 28th, to give contractors time to send RFIs following the site visit?

A4. In accordance with Section L.5.1.1. and Section L.5.1.2. all questions shall be submitted via email to Angela LeRoy at angela.leroy@us.af.mil and Amanda Smith at amanda.smith.70@us.af.mil NLT Wednesday, 30 July 2025 by 2:00 PM CDT.

Q5. The Statement of Objectives Item #2 states that the roof slope shall be ¼” per foot.

UFC 3-110-03 Change 5 recommends ½” per foot slope. Confirm that the roof slope for this project will be ¼” per foot.

A5. The SOO states “All requirements need to meet UFC 3-110-03” which would be ½” slope.

Q6. Can the government provide as-builts for B457? If so, are the CADD files also available to be provided?

A6. The as-builds PDFs are being posted to www.SAM.gov . If CADD is available, then it will be provided after contract award.

Q7. Can the Govt provide existing as-built drawings?

A7. The as-builds PDFs are being posted to www.SAM.gov .

Q8. Can core cuts be performed at the site visit to determine the condition of the existing deck?

A8. As indicated during the site visit, 55th Civil Engineering was to take core samples for the benefit of all Offerors. The core sample results were posted on www.SAM.gov on 28 July 2025.

Q9. Can access be provided to inspect the underside of the existing deck?

A9. Not at this time. Access will be provided once the contract is awarded.

Q10. Is the new roof system to be fully adhered?

A10. Please Question and Answer 48 on install per UFC.

Q11. What are the specifications for the windows?

A11. Overall approximate measurement is 22 ft for top angles and 29 ft at bottom. This is a triangle, and windows are in 4 different sections per window.

Q12. Is the complete gutter heating system to be replaced – i.e. cables, controls, sensors?

Or is the work limited to replacing the heating cable only?

A12. Replacing the heating cable only back to electrical box tie in at each gutter location.

Q13. Is it the Govt’s intention to replace the entire gutter or will cleaning and lining with EPDM be an acceptable option?

A13. Cleaning and lining with new EPDM is the requirement.

mailto:angela.leroy@us.af.mil mailto:amanda.smith.70@us.af.mil http://www.sam.gov/ http://www.sam.gov/

Q14. Can the Offeror use the past experience of a major subcontractor to satisfy the requirements of Subfactor 3 – Experience?

A14. In accordance with Section M.8.2.3. Subfactor 3 evaluates the adequacy of the Offeror's past experiences on an acceptable/unacceptable basis. It also evaluates the adequacy of the Offeror's approach to provide information on diverse experience, inclusive of design and construction. The Offeror's experience will be required through the Contractor Performance Assessment Reporting System (CPARS). The Offeror must demonstrate recent and relevant experience and technical competence in roof repair/replacement construction, roof repair design and project superintendent/overseer at the thresholds set forth in the solicitation.

Q15. Given the current potential fluctuations in market prices for materials due to availability and tariffs, would the Government reduce the number of days for the Government acceptance period to 90 days?

A15. No.

Q16. Is it possible to post the sign-in-sheet from the site visit on this project?

A16. The site visit attendance sheet was posted to www.SAM.gov on 28 July 2025.

Q17. What is the cover board thickness?

A17. The cover board is ½”.

Q18. Is the new roof system mechanically fastened or adhered?

A18. Please Question and Answer 48 on install per UFC.

Q19. What is the required warranty length?

A19. 20-25 years on the roof system.

Q20. What is the wind rate for the new roof?

A20. That calculation will need to be figured out by the A&E Design firm because of the different variables involved.

Q21. Is 90 mil EPDM black acceptable for the new roof as an alternative for white EPDM?

A21. No.

Q22. Is 80 mil TPO white acceptable for the new roof as an alternative for white EPDM?

A22. No.

Q23. Can you specify the equipment or linear footage that requires walk pads?

A23. Approximately 1190 LF, please see drawings posted on www.SAM.gov.

Q24. Is a crane allowed to be used for this project?

A24. Yes, but you will need to get a FAA Waiver before work can begin.

Q25. Can CAD or PDF drawings be provided?

A25. Yes, PDF drawings are being posted on www.SAM.gov.

Q26. After reviewing the Statement of Objectives, it was noted that the contractor is to replace rotten or damaged nailer as needed. Since the quantity is unknown, in order to ensure each response is apples to apples, please advise if there can be a defined quantity or unit price to ensure that all responses are aligned.

A26. Estimate 500 LF of nailer for replacement.

Q27. After reviewing the Statement of Objectives, it states that the new lighting protection system is to be "certified". Please confirm that the testing is ONLY to include the new lighting protection system installed as part of this project and does NOT require certification of the entire grounding system for the building to obtain a UL Master Label.

A27. Testing of the new system in work area only but also to take ohm readings at each ground rod to get new base readings on the system for the Government Electrical Shop.

Q28. It was observed during the site visit that there are multiple trees that overhang the existing roof system. These trees also appear to be depositing much organic material in the internal gutters and clogging the drainage. Please advise if we should include trimming the trees back so that they are clear of the roof line.

A28. Trimming of trees in work zones will be taken care of by the Government, if required. It is out of scope for this requirement.

Q29. During the site visit, it was observed that the perimeter edge metal is comprised of two pieces. There is a fascia/closure piece and then there is a drip edge installed on top of that fascia/closure piece. Please advise if both pieces are required to be removed and replaced or only the drip edge piece is to be removed and replaced?

A29. Both need to be replaced.

Q30. It is noted in the Statement of Objectives that the contractor is to provide and install

(62) roof drain inserts (i.e. Hercules or equivalent). After reviewing the existing roof drains, they appear to be in good condition. However, they do appear to be clogged with organic debris, but trimming back the trees should resolve this issue. Please advise why it is the intent of the Government to install new drain inserts?

A30. Install roof drain inserts per SOO.

Q31. It was noted during the site visit that there are (28) translucent skylights currently installed. They appeared to be original to the PVC roof installation. Please advise if these should be included to be removed and replaced?

A31. Replacing skylights with new ones is not part of this project.

Q32. During the site visit, it was observed that there are multiple Obstruction Lights installed at the corners and perimeter of the roof area. Associated with these Obstruction Lights, there is a continuous conduit, mainly on the airfield side, screwed through the roof flashings. Please advise if this can be reinstalled as currently installed or if this conduit should be secured to the drip leg of the drip edge flashing on the outside of the roof so that it does not penetrate the roof flashings?

A32. Reinstall as currently installed.

Q33. During the site visit, it was noted that there were multiple antennas that were no longer standing upright. Most likely these were blown over due to wind. Please advise if these are to be re-secured or if they can be removed?

A33. Need to be re-secured.

Q34. It was noted during the site visit that there are several exhaust fans where the rain shrouds have blown off of the exhaust fan unit. This is allowing water to enter the fan assembly and collect. Please advise if these fans are to be repaired or if they can be removed and then an insulated curb cap installed in their place?

A34. None of the fan units repair/replacement are part of this project.

Q35. When reviewing the Statement of Objectives, there is no warranty duration provided.

Please advise what warranty duration is desired?

A35. 20-25 years on roof system.

Q36. When reviewing the Statement of Objectives, there is no hail coverage indicated.

Please advise if there is a desired hail coverage desired as this will affect the system installation.

A36. No hail coverage is desired unless it is covered in the 20–25-year warranty.

Q37. It was observed that there appears to be an elevated stair tower or structure that has its own roof installation. Please advise if this roof is to be included within this project?

A37. Tower is not part of this project.

Q38. We noted that there was an old roof curb that had previously been capped, but there is now one pipe penetration through it. Please advise if this curb is to be removed, deck infilled, and then the opening roofed over and then flashing the pipe penetration accordingly?

A38. Curb is not to be removed.

Q39. Please advise if there is any obsolete equipment that needs to be removed from the roof system prior to the installation of the new roof system?

A39. There is no obsolete equipment that needs to be removed prior to installation of the new roof system.

Q40. With regards to the optional CLIN 0002 (i.e. window replacement), it was noted that the existing windows are surrounded by flush seam metal wall panels. The flashings for the windows appears to tie in behind the metal wall panels. Please advise if the contractor should also include replacement of the metal wall panel system along with the windows in this Optional CLIN?

A40. There is no obsolete equipment that needs to be removed prior to installation of the new roof system.

Q41. Please consider changing the NAICS to 236220.

A41. Government market research and consultation with the small business representative confirm NAICS 238160 is the correct NAICS Code for this solicitation.

Q42. Will there be a location map of the AFB released to assist with locating B457?

A42. Will provide as needed.

Q43. 90 mil EPDM can be difficult to source at times; would the Government consider using 80-mil PVC roofing system instead?

A43. No.

Q44. Are existing as-built drawings available?

A44. PDF drawings are being posted on www.SAM.gov.

Q45. What is the required duration of the Roof manufacturer's system weathertightness warranty?

A45. 20-25 years on roof system.

Q46. Will this project follow UFC Guidelines? If so, the UFC prohibits mechanical attachment of EPDM membranes. Is the new roof system to be Fully Adhered?

A46. Please Question and Answer 48 on install per UFC.

Q47. What ASCE is to be used to determine uplift calculations? ASCE 7-16 or ASCE 7-22?

Per the UFC ASCE 7-22 is required. Is that the case with this project?

A47. Yes, use ASCE 7-22 to determine uplift calculations for this area.

Q48. The "Statement of Objectives" does not mention a vapor retarder. Per the UFC 3-110- 03, the climate zone, and ASHRAE, a vapor retarder will be required to prevent condensation from occurring inside the new roof system.

Accordingly, the recommended roof system per UFC 3-110-03 should consist of the following (or similar):

1) ½” Dens Deck mechanically attached to metal deck

2) Vapor retarder

3) ISO adhered

4) ½” Dens Deck Prime coverboard adhered

5) EPDM adhered.

Does the Govt concur that this is the basis on which to bid?

A48. Concur, follow this UFC guideline above and the Contractors A&E Design.

Q49. What ASCE 7 occupancy Category is this building? III or IV? In ASCE 7-22 Tornado Pressures are required for Occupancy Categories III and IV. Will this be required for this project?

A49. This will need to be determined by the A&E during design.

Q50. What is required of the new Lightning Protection System? Roof only? Roof and new ground leads?

A50. Roof only but if the Design Build calls for new leads, then new leads are required.

Q51. What lightning protection certification is required? Letter of Findings or Master Label?

A51. Master Label.

Q52. There are two drains side by side in each of the drainage trough sections. Is one of these an Overflow?

A52. No, all are drains.

Q53. There are several abandoned curbs and stanchions throughout the roof system. Are these to be removed down to the deck and the deck repaired or are they to remain and be flashed into the new roofing system?

A53. Remain and flashed into the new roofing system.

Q54. Is a layout available for where walkpads will be required? How many lineal feet?

A54. Please see the posted drawings on www.SAM.gov for approximate layout and LF.

Q55. What is the specification for walkpads?

A55. 30” in width and approximately 1190 in LF.

Q56. Please confirm White 90 mil EPDM required.

A56. White 90 Mil EPDM is required.

Q57. From the photos of the roof cores, it appears as if there is moisture in the roof system which may have resulted in deterioration of the deck. Does the Govt want a cost of replacement the roof deck to be included? If so, what quantity?

A57. No cost for deck replacement should be in a proposal.

Q58. What specification of roof deck to be used? B-deck? 20-gaugae? 16-gauge? Primed or Galvanized steel?

A58. There is no replacement of decking in this requirement.

Q59. For bidding purposes, what is quantity of rotten/ damaged nailer to be replaced?

A59. Please estimate 500LF for your proposal.

Q60. Will Submittal Exchange be required for this project?

A60. Yes.

Q61. Are heat trace cables to be re-installed in metal track as currently exists? Or can glue down clips be used as is current practice?

A61. Glue down clips is fine.

Q62. What is the existing substrate? Is it metal deck or is it metal roof panels over which the current single-ply roof was install?

A62. Metal deck.

Q63. UFC 3-110-03 1-8.6 Elimination, Prevention and Control of Fall Hazards (Chapter 1):

Building fall protection is assumed to not be included in the scope of design services. Is this correct?

A63. Yes, that is correct.

Q64. New roof access ladders, roof hatches, roof crossovers, etc. to meet the requirements of UFC 3-110-03 1-8.6 will not be provided. Is this correct?

A64. Yes, this is correct.

Q65. Will the Design Professional be allowed access to the 55th Civil Engineering Squadron document archives to search for original drawings related to B457 to accommodate future design?

A65. Yes, after contract award.

Q66. M.8.4.4. Since the building was constructed in 1985, is hazardous materials abatement required?

A66. Not to the Government’s knowledge.

Q67. What is the requirement regarding the perimeter...flag system or hard rail?

A67. Flag system is fine.

Q68. Is there a specific wind speed, hail rating, and fire rating to meet the roof assembly?

A68. This will be left up to the A&E for design to calculate on specifics.

Q69. According to the RFP, lightning protection and hazardous material subs are required...are these specific to Offutt or can we choose the sub?

A69. All Offerors may choose their own subs.

Q70. The cores pictures provided don't show the decking. I'm assuming the deck is metal.

Can you please provide the gauge and/or make up of the metal deck?

A70. PDF drawings are being posted on www.SAM.gov.

Q71. Are all (62) roof drains/internal pipes the same size? If so, please provide a size?

A71. Yes, all are 10”.

Q72. During the site visit, before we had access to the roof, it was mentioned to provide unit pricing for the potential unforeseen wood nailer. Is that still the expectation?

A72. Please estimate 500LF in your proposal.

Q73. Where are walk pads needed? Can you please provide a linear foot or the major roof top equipment referenced?

A73. See drawings posted on www.SAM.gov and 1900 LF of walk pads.

Q74. Is new sheet metal required as part of the gutter/drain replacement?

A74. No.

Q75. Are the existing expansion joints needed?

A75. Yes, keep expansion joints.

Q76. Does the entire roof have metal decking?

A76. Yes.

Q77. Are the service walk pads a requirement? If so, how should this be included in the proposal? Price per ft?

A77. See drawings posted on www.SAM.gov and 1900 LF of walk pads.

Q78. Has the roofing materials been tested for hazardous materials (asbestos or lead)? If not, is it to be assumed there are no hazardous materials which need to be remediated?

A78. Has not been tested and the Government assumes no hazardous material needs to be remediated in your proposal.

http://www.sam.gov/

Q79. Per UFC 3-110-03 (Change 5 dated 12 June 2020); Chapter 3, Section 3-4. 3-5, 3.6 lists asphalt, tile, and slate respectively as approved roofing materials for steep-slope roofs.

EPDM is not an approved roofing material for use on steep-sloped locations which are found at the long area with the skylights and the five dormers. Is EPDM or a different roofing material to be used in these 2 areas?

A79. Please use EPDM in all areas of roof.

Q80. Are SpecsIntact specifications required for the project? The design submittal requirements on page 6 of the solicitation only calls for drawings, product cut sheets, and construction schedules?

A80. Yes.

Q81. Please provide a sketch / drawing of the paths which require walk-pads. We attended the walk through where it was going to be pointed out, but the path was either not covered or we did not hear which equipment needed walk-pads.

A81. See drawings posted on www.SAM.gov and 1900 LF of walk pads.

Q82. Does the Bid Bond go in the Price Proposal or Technical Proposal? Or does it go into a document by itself? If the Bid Bond goes in the Price or Technical, does it count towards the page limit?

A82. All Contract Documentation, i.e. Representations and Certifications, Joint Venture and/or Teaming Arrangement Documents, Bid Guarantee/Bid Bond are to be in Volume I and do not count against the page limitation.

Q83. Do Joint Venture documents (Agreement/Exhibits) need to go in the Price or Technical Proposal? Do those documents count toward the page limit?

A83. All Contract Documentation, i.e. Representations and Certifications, Joint Venture and/or Teaming Arrangement Documents, Bid Guarantee/Bid Bond/Performance and Payment Bond/Offer Guarantee are to be in Volume I and do not count against the page limitation.

Q84. It states that the Contract/Representations and Certifications need to be in the Price Proposal. Does that count towards the page limit?

A84. All Contract Documentation, i.e. Representations and Certifications, Joint Venture and/or Teaming Arrangement Documents, Bid Guarantee/Bid Bond/Performance and Payment Bond/Offer Guarantee are to be in Volume I and do not count against the page limitation.

Q85. Will an Electrical Engineering design be required for the placement of the snowmelt wires in the gutter or can the contractor replace the lines as circuited?

A85. No, just have a note in Design to spell out what needs to be done with replacement of heat cable unless A&E sees differently.

Q86. Is a bid bond required? If so, should we use the SF 24? What amounts are required?

Is a paper copy required to be delivered, and if so to what address?

A86. Yes, a bid bond is required. In accordance with FAR 52.228-1, included in the solicitation, the amount of the bid guarantee shall be 20% of the bid price or $3,000,000.00, whichever is less. A Standard Form 24 (SF24) should be utilized to submit the bid bond, which shall be submitted electronically with Offeror’s proposal.

Q87. What provisions are made for weather which is poor enough to prohibit work?

A87. The contractor will need to capture all poor weather days which prohibit work, and those days will be added on to the contract performance period, if needed.

Q88. What vetting procedures are necessary for contractor or subcontractor employees?

Can non US citizens work on Offutt AFB?

A88. You will need to fill out and email back to CE a request form, which will be sent to the contractor once the contract is awarded. Non-US citizens can work on base if they have a Permanent Resident Card (Form1-551).

Q89. Can a bid option be added for 60 mil TPO roof system for the facility?

A89. No.

Q90. Are as builts available for the building to determine the deck attachment and construction and to aid in design?

A90. See drawings posted on www.SAM.gov of the roof system.

Q91. What gauge decking is present under all roof systems/areas?

A91. See drawings posted on www.SAM.gov of the roof system.

Q92. Can existing down leads for the Lightning Protection system be reused to certify the new system?

A92. If the A&E of your Design sees fit.

Q93. Can the CE provide core cuts for all facets to determine tear off requirements?

A93. The core sample results were posted on www.SAM.gov on 28 July 2025.

Q94. Have the interior drains been scoped for obstructions? Are there any interior drainage pipes scoped for repair/replacement?

A94. Drains have not been scoped and no interior repair or replacement is in scope of this project.

http://www.sam.gov/

Q95. Please clarify where walk pads are to be installed. Are they only to be placed around RTU's that are operational? Do walk pads have to connect from hatch to each unit?

A95. See drawings posted on www.SAM.gov and 1900 LF of walk pads.

Q96. Is any decking scoped for replacement?

A96. No.

Q97. Will containment be required for construction/demolition activity to contain debris with the flightline adjacent to the facility?

A97. Yes, the contractor will need to control material from flying off the roof and entering the flightline area.

Q98. Can the Period Of Performance for construction be extended from the 240 days currently allotted?

A98. For proposal purposes, it is 240 days but the period of performance can be discussed after award, if needed.

Q99. Can the roof be accessed from the north, west and south sides during construction?

A99. Yes, it has to be coordinated with Facility Managers once the project begins.

Q100. Can a crane be utilized on the project? If so where is the set up location?

A100. Crane can be utilized with project, but you will need to get a FAA Waiver before work can begin. Crane locations will be determined and worked out during meeting prior to start of the project.

Q101. Will MEP drawings be required for the design package?

A101. Only if it applies to the Design.

Q102. Are there any anticipated delays for USAF activities during the construction period?

A102. The only delays may be when x-rays are being taken inside of the building during which we cannot be on the roof.

Q103. What requirements for personnel are required to be onsite by the prime contractor during construction?

A103. The Prime Contractor Superintendent/Overseer is required to be on site each day work if being performed.