RFI Responses Part 4.pdf

Request for Information (RFI)

Repair (Sustain) B1994, Child Development Center (CDC) Hanscom AFB

Questions and Answers

1. Q: Will the government extend the proposal due date by two weeks to June 16, to give offerors more time to properly prepare their design-build approach, proposals, and pricing?

A: June 6th

2. Q: Please provide the most recent as-built drawings of the existing building and MEP/FP systems, including the current security system device and equipment layout..

A: Within Sam.gov see T1A redacted version.

3. Q: Please provide the point of contact for the facility’s existing security system contractor.

A: Will be after award.

4. Q: There are varying requirements for FF&E activities required for the project in the RFP and we have the following questions:

•Confirm that the FF&E inventory provided in RFP Part 6 is related to existing items that offerors must carry the removal, storage, and reinstallation of in their Base Bid

- Construction.

A: Concur

•Will additional/new FF&E items be required for the project?

A: Fixtures & Millwork will be provided in the base bid, refer to schedule in the DBRFP.

•If new FF&E items are required, please confirm that procurement of this package by the successful offeror will be via a modification to the contract?

A: Refer to Schedule in DBRFP as part of base bid. All cost should be included in the current proposal.

•If new FF&E items are required, but offerors are expected to carry the design and carrying out of a best value procurement process in their Base Bid – Design, please provide a draft of the items, including types and quantities as a basis of design so offerors can carry this in their Design.

A: Refer to Schedule in DBRFP as part of base bid. All cost should be included in the current proposal.

5. Q: Please provide the product data for the existing mechanical equipment that will remain in place during construction and as part of the renovation.

A: All relevant information provided in the DBRFP. The Contractor must perform their own verification of existing condition and determine with the Designer of Record what equipment needs to be operational during the construction phase as Contractor/DoR phase in the new mechanical system.

6. Q: The scope of work includes “Remove bottom courses of brick down to foundation as required to install weep and through wall flashing.” How many courses are below the existing adjacent concrete sidewalk/apron grade?

A: Please verify the existing conditions documents.

7. Q: Related to the masonry scope, we did not note any damage to the interior of the perimeter walls due to water infiltration. Should offerors assume there is damage in the perimeter wall and to the drywall due to the lack of a flashing system and design accordingly?

A: Offers proposal must be in accordance with DBRFP and existing condition.

8. Q: Section C103002 “Toilet and Bath Accessories” in Part 3 of the RFP indicates that Toilet Paper Dispensers, Soap Dispensers, and Paper Towel Dispensers will be provided by the government. The paragraphs that follow, defining what is required at each room type/area, however, ask offerors to “provide” each of these items along with other specialty items. Please confirm offerors only have carry install the three items above where indicated.

A: Yes.

9. Q: Section 5.0 Room Requirements for laundry room require new sanitary piping for washing machines and new floor drain with trap primer. However, the concept design drawings do not show any sanitary line demolition, and the finish schedule on A-701 shows the laundry floor ETR. We ask the government to clarify the extent of the sanitary pipe demolition for the laundry room.

A: The Contractor/DoR design and construction must include coordination drawings for replacing the sanitary piping any finishes affected by doing so will be replaced.

10. Q: F201002 Exterior Closure and Keynote B2010.A on Sheet A-161 call for localized pointing and brick replacement. We ask the government to provide an estimated square footage to be used as the basis for the cost proposal.

A: Contractor/DoR shall refer to DBRFP note B2010.A showing a dashed line along the floor plan area for the brick replacement and on the elevations, it shows the note B2010.E describing the work required on sheets A-201 thru A-205.

11. Q: B201003 Insulation and Vapor Retarder: This section requires replacement of any insulation uncovered within the wall assembly with mineral wool of equivalent performance.

Since actual quantities can only be determined once the walls are opened, we ask that the government provides an estimated quantity to be used as the basis for the cost proposal.

A: All areas that are required to be repaired should be confirmed with Contractor/DoR based off the DBRFP Concept Design.

12. Q: Section B3010 Roof Coverings – Per UFC 3-110-3, all roofs with a slope greater than 3:12 shall have permanently installed fall protection. Based on the ANSI/ASSE Z359 Fall Protection Code, structural modification may be required for the fall protection system. Should the contractor allow for fall protection systems and their associated structural modifications?

A: See attach PDF files (01 Guardian Anchor Testing Report), (03 GAF manufacturers warranty)

03 GAF

manufacturers warra

01 Guardian Anchor Testing Repo

13. Q: Does the lightning protection system need to be extended to the new equipment and enclosures?

A: Yes.

14. Q: Per Section D30370, will Duct Air Leakage Testing (DALT) be required for the new ductwork?

A: Yes.

15. Q: UFC 1-200-02 Section 2-3.1.1 requires compliance with ASHRAE 90.1-2019 for this project. Appendix G of ASHRAE 90.1-2019 introduces baseline building energy models that are more stringent than previous versions. In many cases, achieving a 30% reduction in energy consumption is not life-cycle cost (LCC) effective. Please advise whether the government will require a detailed LCC analysis for the new HVAC systems outlined in the RFP, specifically the two ground-mounted rooftop units and the two dedicated outdoor air units.

A: Yes.

16. Q: B201001 Exterior Closure, F201002 Exterior Closure, and Keynote B2010.C in the concept drawings require the replacement of the base of the brick wall and the installation of through the wall flashing and weeps. The keynote requires repairs to adjacent construction. We request the government to verify that the scope of work does not include the replacement of the exterior sheathing at these locations.

A: Refer to note B2020.C in Concept Design documents the description is included.

17. Q: B201001 Exterior Closure, F201002 Exterior Closure, and Keynote B2010.C in the concept drawings call for replacement of the base of the brick wall, installation of through-wall flashing and weeps, and repairs to adjacent construction. If additional unforeseen conditions are discovered during demolition—such as extensive rot, mold, or corrosion of structural members—what is the government’s expectation regarding repairs that may fall outside the defined scope of work?

A: Any differing site conditions shall be submitted as an RFI in construction.

18. Q: The sentence located in Section 1.1 – Project Scope, under Part 3 – Project Program in Part 1 of the specifications (File page 312), states: “Electrical system improvements include…replacing branch electrical panels.” However, Section D5010 – Electrical Service and Distribution, found on file page 373 of Part 1, states that “existing…branch panelboards will remain.” We request clarification on whether the existing branch panelboards are to remain with new circuit breakers as needed, or if they are to be fully replaced as part of the project scope.

A: Follow section 1.1

19. Q: The sentence located in Section D202003 – Domestic Water Equipment, under Part 3 – Chapter 1 of the specifications (Page 50 / file page 360 of Part 1), states: “Provide new electric water heater for heating of domestic water…” However, Section 3-

4.1.7.15 – Water Heaters, found in Chapter 3 – General Design Criteria (Page 50 / file page 394 of Part 2), states that “Water heater shall be fuel-burning gas-fired.” We request clarification on whether the domestic water heater should be electric, or gas fired as part of the project scope.

A: Electrification is not mandatory, the contractor is responsible for equipment selection, technical approach and means and method to meet the applicable local, state, and federal codes, standard, and regulations. Contractor/DoR technical approach should be included in their Proposal.

20. Q: Drawings M102,103, and 104 (100% submission) are referenced for new work. The drawings are very difficult (.25 difference in font) to distinguish new work. Can these drawings be updated to clearly show new work?

A: The DB Contractor/DoR must provide detailed coordinated design documents in accordance with the Hanscom Design Guide applicable local, state, federal codes, standards, regulations, to clearly show new work..

21. Q: Is pre-tab required on HVAC systems?

A: The DB Contractor/DoR must determine means and method for any survey and investigation.

The Technical Approach and means and method are the responsibility of the contractor.

22. Q: Is TAB reports from prior projects available?

A: Not currently.

23. Q: Is kitchen hood to be replaced?

A: DoR/Contractor to confirm existing conditions. The kitchen hood and controls are to meet FC 4-470-17F and UFC 3-600-01 for Fire protection.

24. Q: Is walk in cooler/freezer to be replaced?

A: No

25. Q: D102 (100% submission) drawings call for demo of AC4. M402 &601 only show work with AC1,2,and 3. Is AC4 to be replaced? If so can the nameplate info be provided.

A: Refer to MXRD 160009 posted on SAM.GOV, AC 4 has been removed.

26. Q: Demo drawings call for demo of fin tube and hydronic unit heaters. Can location and qty of these be provided?

A:Refer to the file drawings provided in DBRFP, T1A.

27. Q: What is sow for Kitchen?

A: See Part 3 section E1090.

28. Q: Part 3-Chapter 1-Page 52 indicates that (2) variable volume and (2) DOAS units are included in the scope of work. Currently there are (4) AC units. Is the intent to reduce to (2) units and duct through the building?

A: The intent is to replace the current HVAC system and controls with new HVAC system and controls in accordance with the current standards. Technical Approach, Equipment selection, means and method is responsibility of the DB Contractor/DoR.

29. Q: Can the DOAS units be integral with the ac units as a single package?

A: NO, DOAS units must comply with Air Force standards in UFC 3-410-01.

30. Q: The scope indicates the equipment will be seismically braced. No indication if the existing building is designed as seismic.

A: Refer to the file drawings provided with DBRFP. The independent evaluation of existing conditions is responsibility of the Contractor/DOR. Seismic bracing required in accordance with the current codes.

31. Q: Some confusion as 3-4.4.1 indicates that individual DX units are not acceptable for building HVAC systems, yet the selected basis is D.X. variable volume?

A: The technical approach, Means and Method and equipment selections are the responsibility of the Contractor/DoR in accordance with the applicable local, state, federal standards, codes and regulations. No refrigerant piping or coils can be installed in the interior of the building due Safety hazards of the refrigerant.

32. Q: It appears that all return systems for AC units will be ducted. Please confirm.

A: All supply and return for HVAC system must be ducted.

33. Q: Design standards indicate that winter time humidity levels in the child rooms needs to be between 35% and 50%. This would require humidification systems to be included in the HVAC design. Please confirm.

A: The technical approach, Means and Method and equipment selections to comply with the Design Criteria are the responsibility of the Contractor/DoR in accordance with the applicable local, state, federal standards, codes and regulations.

34. Q: Per C-4-740-14F, radiant floors are to be considered in some child rooms. Please confirm that requirement.

A: No.

35. Q: Design guide indicates economizers are not allowed. Please confirm and if its acceptable to run mechanical cooling (if its required) during economizer season.

A: DOAS system is required.

36. Q: SMMA report indicates that DOAS outside air is to be ducted directly to each room.

Please confirm its acceptable to provide a package system running fresh air through the AC unit.

A: The DOAS outside air is to be ducted directly to each room.

37. Q: Will successful bidder be allowed to utilize 3D LiDAR scanning of the existing facility to document existing conditions?

A: Means and method is responsibility of the contractor with the approval of the CDC after the Award. Contractors must provide their work plan for approval by the government.

38. Q: Project Description says doors and louvers must be replaced to meet ATFP. Are all exterior doors and louvers to be replaced?

A: Contractor/DoR must comply with ATFP UFC 04-010-01

39. Q: There are anti-pinch devices on some doors in the preschool areas. Can you tell us the manufacturer and model numbers for these devices?

A: Manufacturers’ information is not available. Contractor to verify on-site.

40. Q: Is working second shift, after 5:00pm when the children leave, acceptable on this project?

A: With approval from Contracting and Customer.

41. Q: Would it be acceptable to substitute vinyl siding for aluminum siding on the areas where the siding is being replaced?

A: See Part 3 section B201001

42. Q: 1.0 Project Description says all security system components will be reinstalled or installed at new locations by the DAF Security Contractor. Will this include door hardware?

A: No

43. Q: Page C-101 references Bit. Concrete to be removed at various areas around the building.

We believe these areas are not bituminous concrete but are currently Cement Concrete. Are the notations incorrect?

A: Contractor/DoR should verify existing conditions and provide a report.

44. Q: Will we be able to utilize 3D LiDAR scanning to document existing conditions of the facility?

A: Means and method is responsibility of the contractor with the approval of the CDC after the Award. Contractors must provide their work plan for approval by the government.

45. Q: Are the site planning components of the Anti-Terrorism Force Protection requirements not applicable due to site planning being out of work scope?

A: Contractor/DoR must comply with the requirement of ATFP UFC 04-010-01.

46. Q: Will we be able to locate HVAC units on grade adjacent the building?

A: Yes, this will depend on the Contractor and DoR technical approach.

47. Q: Will the exterior walls be required to be blast resistant?

A: No, this is within the base enclosure and meets ATFP; Contractor and DoR are to verify the final design meets all said requirement in the understanding that this is an existing building renovation not new construction. DoR/Contractor will complete the ATFP checklist to confirm all ATFP standards.

48. Will the windows and door glazing required to be anti-fragmentation?

A: Confirm requirements with the FC 4-470-14F.

49. Q: Will the windows and doors have a blast/ballistic design requirement?

A: Confirm requirements with DBRFP and FC4-470-14F.

50. Q: Concrete

• Assuming site pads are 8” thick and not meant to be 8’ thick as noted. Please confirm A: Yes, the comment if based off C-102 should be 8 inches. The DoR/Contractor are to confirm all thickness of pads based off design calculations.

51. Q: Framing:

• What are the preferred framing materials for dormers / exterior duct chases

• Are we doing any work to exterior walls to increase r-value

A: This is dependent on Contractor/DoR and technical approach.

52. Q: Siding:

• What is the preferred vinyl siding material of choice.

• What gauge metal for fascia trim

• What gauge / size gutter system and downspout

A: This is dependent on Contractor/DoR and technical approach in accordance with applicable code requirements.

53. Q: Doors:

• Will existing sidelights be reused or are we to carry new (shown in Plan Part C, not in door schedule)

• What manufacturer of safety doors are preferred at the active shooter accordion detail 4.1.1.9

A: All assemblies shown to be replaced/removed are new (see sheets A-101A through A-101C) A: For the active shooter doors see Part 3 section C102008 of the DBRFP.

54. Q: Equipment:

• Are we including kitchen equipment (as listed in FFE Rooms Typical) A: Contractor/DOR is responsible with the FF&E see Part 3 E109002 for Kitchen equipment.

The fire protection measures should be confirmed with FC 4-470-14F, and UFC 3-600-01

55. Q: Do you expect the cost of this project to exceed 50% of the replacement value of the building?

A: Yes.

56. Q: Please clarify what specific issues make each of the bathrooms non-ADA compliant? A breakdown of the non-compliant items for each location would be helpful (i.e fixture heights, missing handrails, insufficient turnaround space, or door access limitations) A: See Part 6 T1A Report and Existing Conditions.

57. Q: Please clarify the extent of the painting scope for the walls. Sheet A-701 indicates various paint finishes; however, the individual floor plans do not specify the exact locations where painting is required (e.g., full wall coverage throughout each classroom, limited to areas behind removed cabinetry, etc.).

A: Comply with DBRFP Part 3 C3040.

58. Q: Please confirm whether a designated lay-down area or onsite storage space (e.g., for Conex boxes or storage trailers) will be made available for contractor use during the period of performance. If onsite storage is not available, please clarify whether the Offeror should plan for offsite storage of equipment and materials.

A: The contractor/DoR must provide a laydown site plan in a designated area for lay-down area outside of the Child Development Center perimeter. The laydown area must be child proof fenced (in accordance with FC 4-470-16F) in locked and always protected with a large weatherproof signage with description of Contractor’s emergency contact. The site plan must be submitted for approval. After the completion of work the area must be restored to its original condition.

59. Q: The Project Program in section D20 General System Requirements states all plumbing fixtures are to be replaced in kind; however, Conceptual Drawings (PD sheets 101a–101c) show that some fixtures are receiving low-flow retrofits instead of full replacements. Please clarify whether all fixtures are to be replaced or if retrofits are acceptable in select cases.

A: All plumbing fixtures for child development shall be replaced with Lead free fixtures.

60. Q: Additionally, please clarify whether it is the Air Force's intent to have all domestic water distribution piping completely replaced under this contract or only demolished. Section D20 indicates full replacement, while the Conceptual Drawings appear to show only demolition extents with "Future Connection."

A: Yes, the domestic water lines will be replaced with new lines. The Concept Drawings are not coordinated drawings. The Contractor/DoR shall provide and must provide coordinating design and construction documents in accordance with Hanscom Design Guide and applicable codes.

61. Q: Please clarify if the exterior lighting fixtures (W, R, & U) are also to be replaced. Per concept drawings ELD101E and ELD101W there are some fixtures on the border of being in the bubble and others that have no notes associated with them.

A: Those fixtures are not within scope.

62. Q: Please confirm if title pages or volume dividers for the technical proposal will count towards the maximum allowable page count of 15. For example, if including a page that says Volume II and no other information, will this count towards our 15 allowable pages?

A: No

63. Q: Please clarify the scope of work related to the existing air handlers located outside the facility. Project Program Section 1.1 states that “exterior air conditioning and ventilation units…are being replaced under the current HVAC replacement project (MXRD 16-0009)” and instructs to “remove exterior air conditioning and ventilation units,” but does not reference the installation of new units under this scope. However, Project Program Section 6.0, specifically under D303002 and 304008, states that the Design-Builder shall “provide rooftop package units.”

To clarify, is it the Government’s intent that only the exterior air conditioning units serving the kitchen are excluded from the scope of work?

A: Nothing is excluded.

64. Q: Please confirm whether the reuse of existing ductwork and hydronic piping is permissible, provided that the infrastructure is determined to have remaining service life and can support the requirements of the new design. Clarification on this matter will inform demolition scope and system replacement planning and ensure all firms are on even terms.

A: Follow the DBRFP for all new ductwork and Piping.

65. Q: Section D202003 Domestic Water Equipment (Part 3, Chapter 1, Page 50 / file page 360 of Part 2 File) says, “Provide new electric water heater for heating of domestic water;” however, Section 3-4.1.7.15 Water Heaters (Page 50 of Chapter 3 General Design Criteria / file page 394 of Part 2 File) says, “Water heater shall be fuel-burning gas-fired.” Which is correct?

A: Contractor/DoR is required to determine equipment selection based on economic analysis, benefits, operation maintenance and serviceability (LCCA).

66. Q: The concept drawings state replace existing aluminum siding in kind, another section of the RFP states replace vinyl siding in kind. Please clarify.

A: See Part 3 section B201001

67. Q: Ceiling removal will be required for mechanical & fire suppression scope. Should we consider existing to be removed and put back or new ceiling tile & grid?

A: No, the Contractor/DoR must provide new in accordance with DBRFP Refer to Concept Drawings A-151A through A-151C.

68. Q: Since this is an existing CDC building should we consider new work to meet updated scope or will it apply to existing? Ex: We need to patch existing wall in area of removed door – does the infill need to match existing wall or new code/STC ratings?

A: Yes, Match existing wall and Upgrade to meet current codes.

69. Q: The RFP Specifications appear to limit the power wiring method to conduit only, with no allowance for cable. In cases where existing partitions are to remain and are not stripped down to open stud condition, will Type MC Cable be allowed to be fished into these walls or will these walls be required to be channeled to allow for conduit installation and then patched?

A: The concept drawings are not coordinated construction documents. DoR/Contractor are to provide complete function and operational system.