W911S221B8000 Attachment 4 (RFI Responses).pdf

W911S221B8000 Roofing Requirement Contract Requests for Information

1. Based on the current economic uncertainty, will the contract type be a Firm Fixed Price or Fixed Price with Economic Price Adjustment?

Answer: In accordance with FAR 52.216-1, the Government contemplates award of a Firm- Fixed-Price Requirements contract resulting from this solicitation.

2. ELIN A001 states, “New Metal Roof deck shall match existing decking dimensions”. How is the gauge of the deck to be determined?

Answer: Statement of Work has been revised to reflect 18 gauge.

3. If removing an existing roof results in debris falling between cracks or holes in the decking, what is the procedure to prevent the debris from falling onto equipment or machines bellow?

Who is responsible for containing the debris from falling inside and who is responsible for the cost of cleanup? What ELIN would this fall under?

Answer: Any unique situation(s) encountered during the performance of a Task Order will be assessed if/when encountered. FAR 52.236-2 Differing Site Conditions & FAR 52.236-3 Site Investigation and Conditions Affecting the Work are applicable and have been incorporated by reference.

4. ELIN A007 states, “Existing wood nailers shall NOT be reused”. Can the existing nailers be kept and added onto if they are in good shape?

Answer: As identified in the Statement of Work, existing wood nailers shall NOT be reused.

5. ELIN A010 states, “Repair shall be accomplished by placement of a TPO membrane patch”.

Is the patch to be the same color and thickness of the roofing membrane that it is going to be covering?

Answer: Statement of Work has been revised to reflect the patch shall be the same thickness and color (white or gray).

6. Under ELIN A011, does the new roofing material have to be the same manufacturer of what is on that roof? Will the EPDM and all products have to be the same manufacturer, or can a substitute be used for the replacement of those sections?

Answer: New material does not need to be from same manufacturer but the product does need to meet the material specifications.

7. ELIN A016 it states that Existing wood nailers shall not be reused and if new nailers are used it will be at no additional cost to the Government.

Answer: Statement of Work has been revised to remove “at no additional cost to the Government”.

8. Is the Perimeter Enhancement System required to be installed on every roof project or is this only on certain roofs that are deemed to be higher risk because of location such as the airfield?

Answer: The Government reserves the right to order perimeter enhancement systems on any roof project, however, the most common application will be on High Risk Roofs such Aircraft Hangers on the Airfield.

9. With the current state of the market and extreme lead times/availability, what happens to the schedule if material is not available for extended times past the schedule window?

Answer: If/when a Task Order is issued, a Pre-Construction Conference will be conducted to discuss schedule.

10. Can the Contractor reject a Task Order if an unforeseen circumstances such as a pandemic cause a loss financially?

Answer: Subject to any limitations in the Delivery-Order Limitations clause or elsewhere in this contract, the Contractor shall furnish to the Government all supplies or services specified in the Schedule and called for by orders issued in accordance with the Ordering clause. FAR 52.216- 19 Order Limitations & FAR 52.216-21 Requirements (Alternate I) are applicable and have been incorporated by full text.

11. Will submittal review and approvals be cumulative from the first task order so that future task orders will not require all new submittals for previously approved materials?

Answer: Submittals will be required after award of the contract and will only require resubmission if the product or manufacturer changes.

12. The posted wage rate shows a roofer’s rate as well as a sheet metal rate. Is the awarded contractor required to pay sheet metal rate for work on metal trims and metal roofs while paying at least the lower minimum rate for all other roof work? If the metal rate is required to be paid does that apply to metal roofs only or all metal trims and other metal work?

Answer: All work will be performed under the Roofer wage rate classification.

13. Is the current wage rate applicable for all 5 years of the contract?

Answer: As identified in the Instructions to Bidders, Item 10 (Construction Wage Rate Requirements), the Davis-Bacon Wage Decision will be updated annually

14. According to the drawings (sheet 2 of 2) related to ELIN A006a, 2” x 4” pressure treated nailers are required on top of 2’ x 4” pressure treated nailers. Since pressure treated lumber cannot be in contact with metal roofing as it is corrosive to the metal, shouldn’t a 2” x 4” common nailers be required for the top layer?

Answer: Statement of Work has been revised to identify the correct installation.

15. In reference to the Base Period’s ELIN A009 please provide additional detail in regards to the material and materials specifications for the new roof coping.

Answer: Statement of work has been revised to identify a minimum 24 gauge material.

16. Is the Bid Compact CD requirement mandatory? Is emailing the bid package or submitting a flash drive acceptable?

Answer: As identified in the Instructions to Bidders, Item 7 (Bids), all bids must be submitted in hard copy along with documents in digital format on a Compact Disk (CD). Failure to provide this information in hard copy and CD with the bid may render the bid nonresponsive and NOT eligible for award.

17. Please clarify what the makeup and thickness of the roof system to be removed is for each system pertaining to the multiple roof systems indicated. This includes the shingle roofs, metal roofs, EPDM roofs, ballasted roofs, Built-Up Roofs. What is the thickness of existing wood blocking to be removed? What is the type of deck the new materials will be going on?

Answer: The thickness of wood blocking can vary (either 4.5” or 9”). Make up of roof system varies, but examples may include but are not limited to the following:

- Shingled Roof: Wood deck could be ¾” plywood, tongue and groove, vapor barrier and shingles

- EPDM Roofs: Steel deck could be R-24 or R-48 Insulation factor

- Ballast Roofs: Steel deck R-24 Insulation factor with either Hot Tar or EPDM with stone

- Built-Up Roofs: Steel deck R-24 Insulation factor with cold applied tar and rolled granular woofing material possible double layers

18. Is there any hazardous material to be abated?

Answer: There will be no abatement performed under this contract.

19. Will you be securing the communication radio for control tower communication for work that may take place near airfield?

Answer: The Contractor will be required to coordinate with the Airfield Safety office to sign out a communication radio or gate access remote when necessary. A driver safety training will be required to access roofs on the airfield. If/when a Task Order is issued for work to be performed on or near the airfield, additional information will be provided during the Pre-Construction Conference.

20. Please clarify if the new roofs in ELIN A007 and ELIN A008 are to be Thermoplastic Polyolefin roofs or if they are to be PVC?

Answer: Thermoplastic Polyolefin

21. Exhibit C, Drawing 2 of 2 has details indicating typical Ice Panel Details, Typical Flashing Detail, Attic Ventilation Repair, and typical Water Barrier Installation Plan, all dealing with Shingle roofs. Is there any work in the ELIN’s on the shingle roofs or is the only shingle work at areas where shingle roofing will be removed and metal roofing installed as in ELIN A006?

Answer: The Government is converting shingled roofs to metal roofs if/when a shingled roof requires replacement.

22. Attachment 1, SW-5 Training identifies the required training. In addition to man-hours, are there costs associated with the multiple required trainings? How long should each training take?

Answer: There are no costs for the training and each will take approximately 1 hour to complete.

23. Exhibit F - Spec Section 075323 EPDM Roofing, page 11 part 1.4.3 indicates Qualifications for Photovoltaic (PV) Rooftop Applicator. Are any solar panels going on the roofs?

Answer: No solar panel work is required under this contract.

24. Is the EPDM Roofing spec section included for repair work on EPDM roofs since the new membrane roofs are indicated as either TPO in the ELIN’s or PVC in the Spec Section 075313 for ELIN’s A007 and A008?

Answer: Yes

25. Is ELIN A001 pertaining to metal deck replacement on a roof where the roof system is being replaced in one of the other ELINs?

Answer: ELIN A001 is for replacement of defective steel decking if identified after the roof system is removed. FAR 52.236-2 Differing Site Conditions & FAR 52.236-3 Site Investigation and Conditions Affecting the Work are applicable and have been incorporated by reference.

26. Is ELIN A002 pertaining to wood deck replacement on a roof where the roof system is being replaced in one of the other ELINs?

Answer: ELIN A002 is for replacement of defective wood decking if identified after the roof system is removed. FAR 52.236-2 Differing Site Conditions & FAR 52.236-3 Site Investigation and Conditions Affecting the Work are applicable and have been incorporated by reference.

27. What type of wood deck, thickness, style, etc. is associated with work performed under

ELIN A002?

Answer: The type of wood deck includes but not limited to ¾” plywood or tongue & groove.

28. In ELIN A004, is there a spec for the metal soffit? It doesn’t appear to be in Exhibit D pages 21-29, and it is indicated as vinyl soffit in Exhibit C detail for Typical Fascia/Soffit detail. The detail for Metal Roofing – Typical Section of Standing Seam Metal Roofing appears to indicate that it is a continuous flashing metal closure from the metal roof to the siding all as one piece forming the fascia/soffit area. Which is correct (Metal or Vinyl) soffit?

Answer: The soffit must be metal and will be separate from the fascia.

29. Are the fascia covers under ELIN A005 to be replaced on Shingle Roofs or Metal Roof systems?

Answer: Metal Roof Systems

30. Are the panels for new metal roofs under ELIN A006 required to be snap seam or field formed seams? Please clarify which MBCI panel is to be used as MBCI is indicated in attachment D pages 21-29 as the color option?

Answer: The panels are required to be snap seam. There are two different colors of Standing Seam Metal Roof colors; Grey Tweed for North Post and the Airfield or Medium Bronze for South Post.

31. In ELIN A006, is there any insulation, cover board, or vapor barrier going beneath the new metal roofing?

Answer: The specific makeup of the metal roof system will vary for each building.

32. In exhibit D pages 21, 24, 28, in the Roof Section for Colors & Materials, is the flat referring to the membrane roofs, suggesting that the TPO/PVC would be grey colored?

Answer: Gray Thermoplastic Polyolefin is required on all flat roofs.

33. In ELIN A006, are we to presume there are existing penetrations through the roof that would need to be flashed into the metal roofs? Approximately how many and what type should we figure per square for pricing correctly?

Answer: There are existing penetrations through metal roofs. The quantities and sizes will vary for each building.

34. Are the buildings FM Global Insured?

Answer: No

35. Please clarify the makeup of the different roof systems required.

Answer: The specific makeup of the different roof system will vary for each building

36. The Insulation section indicates a thermal barrier but none is indicated in the ELIN’s. The EPDM spec indicates 3 different types of membrane, Energy (Cool Roof) Performance, ballast/pavers, paver supports, protection mat, etc. Please clarify.

Answer: No thermal barrier is required.

37. What is the mechanically fastened ½” cover board to be, gyp or high density polyiso?

Answer: The cover board material will be determined based on the Contractors choice of manufacturer in order to achieve the 105 mph wind resistance and the 20 year warranty.

38. ELIN A007 indicates a new Retrofit Roof Drain. Is it only one drain, how many drains are to have new retrofit drains for the 356 SQ or 712 SQ areas indicated?

Answer: The amount of drains will vary based on size of roof.

39. In ELIN A007, is the R-48 roof insulation to be a minimum thickness, is it an average R-48 if the roof gets tapered insulation, is the roof structurally sloped to get flat R-48 with some tapered crickets, and is the deck flat requiring fully tapered insulation?

Answer: For flat roofs not structurally sloped, the R-48 will be an average since tapered insulation for proper drainage is required. Flat roofs structurally sloped will be R-48 minimum thickness where some crickets will be used to provide positive drainage.

40. ELIN A007 indicates replacement of existing EPDM in accordance with EPDM section 075323, but then it goes on to indicate the roofing with 60 mil TPO. Please clarify if it’s to be TPO or EPDM and if the EPDM is .060 or .090 thickness?

Answer: Existing EPDM will be replaced with 60 Mil Thermoplastic Polyolefin.

41. ELIN A008 indicates replacement of existing EPDM in accordance with EPDM section 075323, but then it goes on to indicate the roofing over the existing insulation with 60 mil TPO. Please clarify if it’s to be TPO or EPDM and if the EPDM is .060 or .090 thickness?

Answer: Existing EPDM will be replaced with 60 Mil Thermoplastic Polyolefin.

42. In ELIN A009, is the coping to be replaced on low slope flat membrane roofs, or on steep pitch metal roofs possibly requiring work from Man-Lifts.

Answer: ELIN A009 is not specific to any type of roof.

43. In ELINs A020 and A021, is the 4” insulation to go on low slope roofs, or steep slope roof decks?

Answer: The 4” insulation requirement is primarily intended for steep pitched roof decks but quantities can be ordered for low slope roofs if determined necessary. Not all steep roof decks have insulation under the metal roofing and not all steep slope roof decks require insulation under the metal roofing material.

44. Please clarify the makeup of the existing roof systems to be removed, particularly for ELINs A007, A015 and A016?

Answer: The makeup of existing roof systems to be removed vary, and include but are not limited to the following:

- EPDM Roofs: Steel Deck, R-24 or R-48 Insulation factor

- Ballast Roofs: Steel Deck, R-24 Insulation factor with either Hot Tar or EPDM with stone

- Built-up Roofs: Steel Deck, R-24 Insulation factor with cold applied tar and rolled granular woofing material possible double layers

45. For ELIN A024, where broken drains are to be replaced, are the buildings accessible for interior access to attach the new drains, are the ceiling drop ceilings for easy access to the drains or are they hard ceilings to be cut out and patched in?

Answer: There are buildings with drop ceilings but may be limited to ladder only. There are also buildings with roof drains accessible with a lift. Removal and replacement of hard ceilings is not a requirement under this contract.

46. Are some of the ELINs duplicates, such as ELINs A001 and A002 possibly being for the same area that the deck type might not be known for the roof indicated in ELIN A011?

Answer: There are no duplicate ELIN’s.

47. Please provide the As-Built drawings to show location of the Buildings referenced in the

ELINS.

Answer: As-Builts will be provided if/when a Task Order is issued.

48. How do the Out Years connect to the Base Period Pricing?

Answer: There is no connection between the Base Year Period pricing and each Option Year Period pricing.

49. Do we use a Multiplier or Escalator Factor (TBD) to connect the Base Bid Scope to the “option years”?

Answer: Determining the method to establish proposal costs for each ordering period is the Contractors responsibility.

50. Does the whole ELIN List need to be priced for the BASE BID Period or is the ELIN list to be priced for Base Period and First Option time period?

Answer: As identified in the Instruction to Bidders (Item 13), complete bid price will equal the sum of CLINs 0001, 0002, 0003, 0004, 0005, 0006, 0007, 0008, 0009 and 0010.

51. Attachment 1 SW-7 indicates visiting the site to survey the existing conditions and verify portions of work to be done. SW-4 Principle Features statement appears to indicate that we will not be able to verify what needs to be removed, or what the existing makeup, thicknesses, deck types (metal, concrete, wood, etc.), structurally flat or sloped decks, etc. are, Which condition is correct (site visit or no site visit to confirm conditions prior to bid)?

Answer: There will not be a Site Visit associated with Invitation for Bid W911S221B8000.

If/when a Task Order is issued, the Contractor is responsible to visit the site to survey the existing conditions and verify all portions of work to be completed. FAR 52.236-2 Differing Site Conditions & FAR 52.236-3 Site Investigation and Conditions Affecting the Work are applicable and have been incorporated by reference

52. Scope of Work SW-23. Para a. Exclusionary Period. Will the initial Base Bid be awarded during the November to April period?

Answer: The Base Ordering Period is currently projected to be 1 November 2021 through 30 April 2022 but is subject to change if necessary.

53. Does the “Detailed Pricing Schedule” A001 to A024 include winter thermal protection?

Answer: Winter thermal protection is not required.