33330225RT0010018 Amendment 0007.pdf

(x)

33330225RT0010018

x x

1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

x

OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

OCON

OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

SMITHSONIAN INSTITUTION

220010905/22/20250007

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

04/01/2025

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

A. The Solicitation Number cited above, NMNH: Renovate Baird Auditorium, at the National

Museum of Natural History (NMNH), located in Washington, DC is hereby amended as follows:

A.1. Attached hereto and made part of this Amendment Seven are SI Responses to RFI's for

Questions Number 196 to 200.

A.2. Offerors shall acknowledge receipt of all amendments to this solicitation signed and dated and submit with proposal.

B. The Due Date for Receipt of Proposals is Friday, May 30, 2025, at 3:00 PM EST.

Continued ...

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Christine Grant

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 17

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

33330225RT0010018/0007

C. Except as provided herein, all other provisions, terms and conditions of the

Solicitation remain unchanged.

END OF AMENDMENT SEVEN

NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

22000109 - Renovate Baird Auditorium

NMNH

Bid Phase RFI Response Issued 5/22/2025

Renovate Baird Auditorium Issued 5/12/2025

NMNH

Bid Phase RFIs

Number Date Received Discipline Question Response

1 4/9/2025 General

I wanted to reach out regarding the list of trade partners that were not able to make the site walk today and see if there is a plan to hold a second site walk in the near future. Our recommendation would be to have a second site walk within the next 2 weeks to allow bidders to see the space to develop questions prior to the RFI submission deadline on the 25th.

Additional site visits will be offered 4/16/2025. See communications specific to this offering under separate cover.

2 4/10/2025 General

Can you please set up another site visit, have other people that will need to see so we can get you a better price? See question 1.

3 4/10/2025 General Do you have any as-built drawings?

Known as-built conditions have been incorporated into the demolition and existing conditions drawings. Please specify what conditions you want to see on as-built documents.

4 4/10/2025 General Will the demolition contractor be able to have more than 1 dumpster on site? Demo contractor will be allowed one dumpster on site.

5 4/10/2025 Demolition Is the demolition work going to be accomplished during normal business hours?

See Specifications Section ”CONTRACTOR USE OF PREMISES”. Work creating sounds or vibrations shall be accomplished during the week between start of off-hours and 6:00 am Monday through Friday.

6 4/10/2025 General

Does the building have a 3 phase - 480 volts - 60 amps breaker we could use for the concrete slab removal?

There is a 480 volt-60 amp breaker in the existing mechanical room ME-AUD.

7 4/10/2025 Demolition Will all the equipment be removed from the protection booth?

yes, all equipment will be removed from booth prior to turnover to contractor.

8 4/11/2025 Demolition

On Drawings HD-121-DP & HD-122-DP, Lists the hazardard materials throughout, Are we to remove all items on the drawings or just some? If not all, can you let us know which items will be removed?

All hazardous materials are to be removed per drawings with following exceptions:

- Doors ROTG2 and ROTG3 are existing to remain;

- Follow specifications and drawing notes for protocols related to LBP. Encapsulation is acceptable and preferred in most locations.

9 4/11/2025 Demolition

In the middle of the auditorium, Letter D, List Black Foil Duct Insulation seams.

Are we to remove the auditorium ceiling to access the ductwork?

No. Do not take down auditorium ceiling. Abatement and demolition needs to happen above the ceiling in the cavity space.

10 4/11/2025 Demolition Are there any as-built drawings? See question 3.

11 4/16/2025 Demolition

Can we use scissor lifts in the hallways around the auditorium to access the ceiling tiles? Electric scissor lift can be used inside the building.

12 4/16/2025 Demolition Can we use the emergency exit by the back of the stage, across from the chair lift to remove some debris?

Use of the exit (999 door) can be coordinated with COTR for pumping of concrete only. The use must be approved by COTR 2 weeks ahead of time and take place off hours between 8pm and 6am.

13 4/16/2025 Demolition How many dumpsters are we allowed to have on site at one time? See question 4.

14 4/16/2025 Demolition Will all the employees need to be badged? Will it cost anything?

See 01 0000 Section 54 Identification Badges. There is no cost.

15 4/16/2025 Demolition

Who is responsible for the disconnection, cut, cap, make safe and removal of all the electrical & mechanical conduits, wiring ductwork and panel boxes beneath the auditorium flooring? (All will need to be removed, because the upper slab is going to drop 3' feet onto the lower slab and don’t know what is connected to the rest of the building.)

The contractor will be responsible for the disconnection, cut, cap, make safe and removal of all the electrical & mechanical conduits, wiring ductwork and panel boxes beneath the auditorium flooring.

16 4/16/2025 Demolition Does anyone know the thickness of the concrete slabs (both upper & lower) ?

Based on historic drawings, the assumption is both slabs are 10": 6" base plus 4" topping. This has not been field verified.

17 4/21/2025 Demolition Does the Smithsonian have a electrical panel box with 208 volts, 60 amp 3 phase, near the auditorium?

Yes, there is a 208 V, 60 amp 4 phase panel in mechanical room ME-AUD.

18 4/21/2025 Demolition

If yes, The best way to breakup the slabs in the auditorium would be with a brok.

If we supply a pigtail, would your electrician be able to tie into your panel box closest to the auditorium?

SI electrician will identify the electrical panel location and secure power to the panel , however the contractor will be responsible for providing the wiring and making the connection to the panel.

19 4/21/2025 Demolition Will all of this work be accomplished in one (1) phase? Yes, this is a one phase project.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response 20 4/23/2025 General Please provide the design model if available. Design model will be provided for reference only.

21 4/25/2025 Life Safety

The Public Safety DAS (Life Safety Communication, BDA, Emergency Responder Radio) Network is a mandatory requirement by the Local AHJs (DC’s OUC) for most of new buildings over 25K SF and also any Building Renovation in the Washington DC. Please confirm if this will be a requirement on this project.

This is not required for the renovation of the Baird Auditorium.

22 4/25/2025 010000

Reference specification section 010000. Section 5 indicates that unit prices are to be submitted as part of the RFP proposal; however, the niehter the RFP nor the bid schedule provided include a section for unit prices.

Please confirmed if unit prices are required to be submitted. No unit prices are required at this time.

23 4/25/2025 N/A

Please confirm if there any requirements for full-time or minimum percentage-of-time onsite presence for key personnel, including but not limited to the Sr. Project Manager, Superintendent, CQC Representative, safety manager or Historical Preservation Specialist.

Additionally, can one individual serve in multiple roles (e.g., can the Superintendent also serve as the Historical Preservation Specialist if qualified)?

See 01 0000 Section 21. Site Superintendent, Sr. project manager, and a CQC rep to be onsite fulltime. CQC representative(s) shall not be the same individual as superintendent or project manager (010000 21.3). 21.5.4 CQC specialized supplemental personnel: one individual may hold more than one of the roles listed.

24 4/25/2025 N/A

Please confirm if any temporary systems (MEP, fire protection) are required to maintain occupancy in adjacent spaces.

All adjacent spaces will remain occupied by staff and public. Any shutdown of MEP/FP systems within the construction zone that will affect the adjacent space must be coordinated with the COTR and building management giving adequate notice and done off hours; and spaces must be fully occupiable during regular business hours. We do not anticipate the need for a temporary mechanical unit, generator, pumps, etc. to meeting these requirements.

25 4/25/2025 RFP

The RFP requires that subcontractors be named for specific elements of work. If a subcontractor has not been selected for a particular scope at the time of proposal, is it acceptable to submit a list of prequalified firms under consideration and finalize selection post-award, subject to Contracting Officer approval?

It is acceptable to submit no more than three (3) subcontractors for specific elements of work.

26 4/25/2025 N/A

Given the historic character and structural delicacy of the Baird Auditorium (e.g., Guastavino tile ceiling, bowl-shaped floor slab), are there specific access restrictions or limitations on the use of lifts, scaffolding, or coring methods inside the auditorium?

See question 94. See 01 0000 38. Scaffolding and Platforms. Only electric lifts and equipment inside building.

See question 75 related to monitoring for excessive vibration.

27 4/25/2025 N/A

The drawings note that temporary contractor office space will be provided within the NMNH in an area designated by the COTR. Can the Smithsonian provide a list of potential acceptable locations for the contractor's temporary office space, or identify any specific areas within NMNH that are off limits for use? This will assist in planning and submission of proposed office layout in advance.

Temporary contractor office space can be set up within the footprint of the Baird project space, for example use of the green room.

28 4/25/2025 N/A

Please confirm whether the existing Guastavino tiles containing lead-based glaze (as identified in the hazardous materials report) are to be cleaned, encapsulated, or removed and replaced. If cleaning is required, are there pre-approved methods or mock-up requirements for testing and acceptance?

The hazmat report which is included in the Project Manual documents that the lab was able to demonstrate the lead surface contamination was cleanable from the tile glaze surface and is not integral to the glaze itself. Note #10 on sheet HD-121-DP indicates that the Contractor needs to collect and containerize all waste generated from the cleaning process. Spec 02 8300, “Work Activities Impacting Lead-Containing Materials” dictates minimum training and PPE requirements (OSHA Lead in Construction 29 CFR 1926.62) and waste collection and disposal (EPA 40 CFR Parts 260-279). This work should also be coordinated with the Guastavino tile cleaning procedures outlined in the drawings and spec 04 0110, “Masonry Cleaning”. There are no requirements for testing and acceptance; however, the cleaning of the tile as covered under spec 04 0110, “Masonry Cleaning” needs to be conducted with the knowledge that lead-containing residue is present and proper procedures need to be taken to protect contractors during the process and to properly dispose of the waste generated.

29 4/25/2025 N/A

Should any previously repaired or mismatched tile units be matched in kind (materials, color, jointing, etc.), and will the Smithsonian be providing a reference sample or mockup standard for finish acceptance?

Tiles that appear to be mismatched, previously had coatings applied to the surface. Where noted on the drawings, removal of these coatings is required. For other locations noted on the drawings, the contractor is responsible for matching existing tiles for replication and replacement.

Samples and mock-ups are required per specification section

040180.93 "Guastavino Tilework Restoration." Upon request, a reference sample can be provided for matching texture, glazing, and other properties. However, please note that the tiles range in color and the reference sample provided will not capture that range. The reference sample will need to be returned to the owner upon completion of the project.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

30 4/25/2025 014000

Based on Section 01 4000, the Contractor understands it is responsible for all required quality control testing and inspections, except where noted otherwise. Please confirm whether the following testing and inspection services will be provided by the Owner (or their consultants) or should be included in the Contractor's base scope:

1. Field testing of cast-in-place concrete (e.g., slump, air, cylinders)

2. Testing and inspection of structural steel installation and welding

work (non-abatement scope)

commissioning

7. Final clearance testing for hazardous material abatement All testing requirements will be the responsibility of the contractor and will be reviewed and approved by SI.

31 4/25/2025 AD-110-DP

Please confirm if all seats showing signs of wear and damage should be sent for refurbishment or if preference is to use SI's attic stock. If so, please provide quantity of seats available as attic stock that can be assumed to be used.

Given the new layout of seating, all attic stock (approximately 20 chairs) will be available for use to source all components. All components shall be refinished and any unused components not installed in the new seating layout shall be returned to SI for attic stock.

32 4/25/2025 2/AD-302-SC

Reference 2/AD-302-SC. Please confirm that the client referenced in "Client to remove existing cases prior to work" is SI and that the GC is not responsible for removing, relocating or reinstalling. Confirmed.

33 4/25/2025 057300 & 5/A-442-DT

Reference 057300-4 2.3.A and 5/A-442-DT.

Specifications indicate several manufacturers to provide the solid bronze elliptical handrail; however, it appears these manufacturers' do not offer this exact shape. It is recommended that Julius Blum be used ILO specified manufacturers as they offer a similar broze handrail shape and have previously worked for the Smithsonian. Please confirm if Julius Blum shapes 4539 or 4572 (similar shape and solid) or 6488 (elliptical, but hollow) would be acceptable.

The handrail profile #4539 by Julius Blum is an acceptable alternative.

34 4/25/2025

1. Please clarify per Spec 010000 part 5.6 whether the unit prices listed are required to be provided with the bid or will these unit prices only need to be provided post bid? See question 22.

35 4/25/2025

2. For the unit prices indicated in Spec 01000 part 5.6, please clarify that the unit prices listed as “LI” should be “LF” for linear foot. No unit prices are required at this time.

36 4/25/2025

3. Specification 274116.61 Appendix A has a section titled

"LOOSE EQUIPMENT (ALL OFE)" indicating that section is owner furnished. That section includes four-line items, in

"MAKE" column, “By AV Contractor”. Please confirm OFE is

Owner Furnished and clarify what items are to be provided by the Contractor.

Equipment detailed in the "Loose Equipment" section is owner furnished. AV contractor to provide all cabling required for a fully functional system.

37 4/25/2025

4. Per Detail #2 on M-503-DT, please confirm leak detection will only be required for fire protection piping and not HVAC and Plumbing piping. Also, please confirm leak detection will need to be installed by the Mechanical Contractor and not the Fire Protection Contractor, per note G on FX-121-FP.

Leak detection is only required for sprinkler piping above the dome. Confirmed; leak detection is to be installed by the mechanical contractor.

38 4/25/2025 5. Does SI have any stone attic stock for use? No attic stock exists.

39 4/25/2025

6. Please confirm SI will inspect section 5 ceiling area of auditorium when access is provided. The construction team is not required to provide a survey.

AE team will provide survey on behalf of SI. Per specification section 040180.93 "Guastavino Tilework Restoration" the contractor is responsible for providing hands-on access to the A/E team for survey.

40 4/25/2025

7. Please confirm low pressure water and cleaners are intended for use on the ceiling Guastavino tiles. Please note interior cleaning of ceiling surfaces with water can be problematic for collection/disposal and protection of adjacent surfaces.

Cleaners for Guastavino tile/terra cotta and interior cleaning rinse/vacuum equipment are outlined in specification section 040110 "Masonry Cleaning." The lowest water pressure to achieve the desired level of cleanliness should be used and cleaning mock-ups are required. The contractor is responsible for proving protection of adjacent surfaces and the collection and disposal of runoff.

41 4/25/2025

8. Please provide an updated door schedule with different width and height measurements and door types on A-510-

DT. Dimensions are clarified on sheet A-510-DT.

42 4/25/2025

9. Please provide the details of hardware sets 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 11.0, 12.0, 13.0, and 14.0 as mentioned on A-510-DT.

Please refer to spec 08 7100. The door hardware sets begin on page 08 7100-15.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

43 4/25/2025

10. A-520-DT and A-521-DT show details that reference to louvers, however, there are no louvers called out on the floor plans. Please provide locations for each louver needed.

Please see drawing 1, sheet A-430-EP. A louver is to be installed in an existing masonry opening in the exterior masonry wall south of Restroom 95C.

44 4/25/2025

11. There is (1) Access Floor Door shown on A-430-EP in the

Greenroom. Please confirm that this is the only floor door needed for the project.

There is also a floor door in the projection platform. See enlarged plan on sheet A-410-EP.

45 4/25/2025

12. Given the unique nature of the scope of work and special scope requirements for Baird Auditorium Renovation, please extend the time period for the contractor reference projects to eight (8) years.

The time period for reference projects shall be extended to eight (8) years. The SI reserves the right to rate recent projects higher during evaluation.

46 4/25/2025

13. Reference Spec Section 112400 - Fall Protection

Equipment. Please confirm this specification is for the portable davit arm on the mechanical platform indicated on

Sheet A-433-SC.

SmithGroup: Yes, this is correct. This specification covers the portable davit arm to be used to hoist equipment into the Greenroom Mechanical Platform 95M.

47 4/25/2025

14. Reference Spec Section 112400 - Fall Protection

Equipment. Please confirm that no monorails are required.

Fall protection monorails are not required.

48 4/25/2025

15. Reference A-415-EL. The Drawings call for the SW

Elevator Doors to be re-cladded. Are the SE Elevator Doors to be re-cladded as well?

Yes, elevator doors in the SE Lobby and the SW Lobby are to be reclad.

49 4/25/2025

16. Reference Spec Section 126715 (2.1) - Irwin Seating appears to be sole source for the Renovation of Upholstered

Auditorium Seating. Will an alternate manufacturer be acceptable if they can meet performance requirements?

Yes, substitution requests can be made. Also, the spec will be revised to also identify 3 acceptable manufacturers. The following manufacturers will also be listed in the specification:

Great Eastern Seating Company 416 Arrowhead Lane Breinigsville, PA 18031

American Office Services 30257 Clemens Rd., Unit C Westlake, Ohio 44145

50 4/25/2025

17. Reference Specification 126715 para 1.3.A and B - Please clarify if requirements for the submission of a sample chair to be provided at time of bidding is for the successful bidder and not required with bid submission.

Submission of sample chair is not required during bidding; however, there will be shop drawing and sample requirements during construction.

51 4/25/2025

18. Please clarify per Spec 010000 part 5.6 whether the unit prices listed are required to be provided with the bid or will these unit prices only need to be provided post bid? See question 22.

52 4/25/2025

19. Are there any liquidated damages on this project? If so, please provide the cost per calendar day. No. Liquidated damages do not apply.

53 4/25/2025

20. Per spec 010000 part 31, it states that work activities with excessive noise and smells will need to be performed off hours. Please confirm that night or “off hours” work is anticipated on this project & proper supervision we need to be accommodated for this.

Night work or "off hours" work is anticipated for this project and proper supervision during working hours will be expected.

54 4/25/2025

21. Per Spec 019113, please clarify if the commission authority costs are to be picked up by the general contractor or owner?

Commissioning agent will be contracted through Smithsonian.

55 4/25/2025

22. Please confirm Sheet Notes 1, 2 & 3 on drawing AF-602-

FP are the only plaster repair work to carry for this bid and nothing above and beyond or noted elsewhere on the bid documents needs to be covered on top of this quantity indicated.

Yes, this is the estimation of plaster patching, repair, and recreation throughout the project. Please make sure to include this quantity for all areas of the project scope (back of house, ambulatories, etc.), not just within the Auditorium.

56 4/25/2025

23. Please confirm that all the terrazzo & marble floor restoration work is covered on drawing AC-100-FP and there is nothing above and beyond what is shown elsewhere that needs to be covered in this restoration trade.

Correct, all terrazzo and marble flooring restoration work is noted on drawing AC-100-FP. See specification section 090169.91 "Terrazzo Restoration" for additional information.

57 4/25/2025

24. Please confirm what company is the existing HVAC controls contractor within the existing building? Siemens is the existing controls contractor.

58 4/25/2025

25. Please confirm what company is the existing Fire Alarm contractor within the existing building? Siemens is the existing fire alarm contractor.

59 4/25/2025

26. Per drawing FX-001, within "Auditorium Remote Area and

Pump Connection Diagram" there is a note regarding: See

Plans FD-121-DP. Can you please share where this drawing is located within the contract documents or issue this drawing within a future Addenda?

Sheet FD-121-DP is sheet 22 of the combined set of drawings, directly following sheet AD-500-DT.

60 4/25/2025

27. Per drawing FX-001, Fire Suppression General Notes #18, please confirm sprinkler coverage will not be required under the Auditorium floor and within the under-floor HVAC plenum area.

Confirmed; sprinkler coverage is not required under the auditorium floor or within the HVAC plenum.

61 4/25/2025

28. Per drawing FX-001, Fire Suppression General Demolition

Notes #10 & drawing M-001, Demolition Notes #10 & drawing P-001, Demolition General Notes #9, please confirm there will be a place holder for the Credit associated with the

Salvage Valve within the owners bid form.

See 01 0000 Section 25 Salvage. No placeholder for salvage value on bid form.

62 4/25/2025

29. Spec Section 09 8433 Sound Absorbing Wall Units note that the edge profile is to be a custom profile as indicated on drawings. (paragraph 2.3.A.6). No profile is shown in drawings. Please provide.

SmithGroup: The basis of design assumed a standard 1" square edge detail by Novawall Systems; however, the panels will be custom shaped (not rectangular) and the installation wil be finished with a custom painted wood trim at the perimeter.

63 4/25/2025

30. Are the 2 sets of doors and frames leading to the Hall from East and West stairs to be salvaged or just "carefully removed" and demolished per AD102 note on AD111-DP?

SmithGroup: These doors, 1A, 1B, 1C, 1D are to be replaced. The existing wood doors, wood frame, and wood trim do not need to be salvaged, but care should be taken to not damage the surrounding construction.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

64 4/25/2025

31. Contract Drawing AF-602 lists multiple materials that are not referenced in the specifications or the finish schedule.

Please provide the basis of design for the following: RB-1, STN-1, STN-2, TL-02, and TL-03.

SmithGroup: RB-1 has been identified in the finish schedule. TL-02 and TL-03 have been removed from the schedule and finishes in the Greenroom Vestibule and Greenroom have been clarified. STN-1 is used in reference to (E)STN-1 which is existing marble installed at the perimeter of the existing terrazzo flooring in Baird Lobby and the South Lobby. STN-2 is used in reference to (E)STN-2 which is existing granite panels installed in the exterior walls of the Carriageway. See sheets AF- 601-SH and AF-602-FP issued with Bid Addendum #1.

65 4/25/2025

32. The specification for RF-1 lists heat welding and flash coving. The basis of design, Armstrong Excelon SDT, cannot be used as flash coving or be heat welded. Please provide an additional basis of design for a vinyl cove base to be applied, if desired.

SmithGroup: The Armstrong rubber coved wall base may be used in Room 92.

https://www.armstrongflooring.com/assets/specifications/afi/FP7440F 10440-1024_Wallbase_SpecSheet_V2.2.pdf

66 4/25/2025

33. A-303-SC notes to "patch and repair frames and trim" at new entry doors. Please provide additional information as to the extent of the frame repair. On AD-111-DP the frames are noted to be removed as part of the demo scope.

SmithGroup: Assume the existing doors and frames at 1A, 1B, 1C, and 1D will be replaced. The note on sheet A-303-SC will be removed.

67 4/25/2025

34. Reference drawing A-414 EP, please provide details of the trim at Entry Vestibules, where trim is to be repaired.

SmithGroup: See question 63.

68 4/25/2025

General

Cost proposal Bid Schedule requests costs by division to be submitted by material, labor, and equipment. Please consider accepting a combined cost by division. Collecting broken down costs from subcontractors on bid day will be a challenge within a time constraint.

Please provide combined cost per division. Material, labor, and equipment breakdowns are not required at this time.

69 4/25/2025

General

RFP Key Personnel and Subcontractors paragraph 2.C states

“structural floor placement and structural work” element of work is to be a listed subcontractor. Please confirm if this requirement applies to structural concrete and/or structural steel framing considering “concrete work” is also listed separately.

This requirment applies to the structural steel framing and structural concrete.

70 4/25/2025

Temp.

Protections

Please clarify how high wall protections are to be installed as indicated on G-100. Please also confirm that temporary protections can remain in place during the course of construction.

No specific wall and floor protection are required along the egress corridor in the SW Quad to access the West Loading Dock. SI will keep the areaway clear and the Contractor is required to return the site to its original condition following construction.

71 4/25/2025

General

G-100 Access Notes states office space will be provided within NMNH. Please clarify if this space is intended to be used as a construction field office and what temporary measures need to be considered to make the space functional for a field office. See question 27.

72 4/25/2025

Temp. Protection

Drawing G-100 calls out obstructions in corridor along the construction egress path. Please confirm the size and extent of temporary protections necessary for obstructions. See question 70.

73 4/25/2025

Demolition

G-101and G-104 indicates work zone 1 floor demolition and work zone 4 lobby demolition and renovation to occur during evening hours. Please clarify what is to be considered evening hours. Clarify work zone 1 evening hours is only applicable to the floor structure demolition. Clarify work zone 4 evening hours is applicable to the entire scope of work in this area.

Evening or "off-hours" hours are defined in Specifications Vol 1 page 128, Section 14.2 a. “Off hours” shall be defined as those hours when the museum is not open to the public, off-hours normally begin at 6:30 pm, except during spring and summer months when off hours begin at 8:00 PM. Please refer to the drawing notes for Work Zone 1 and 4 for scopes and inclusions. All demolition that will produce noise or vibrations will be performed during off-hours as specified.

74 4/25/2025 General

Please confirm this is a single phase renovation and work zones are provided for applicable working hours only. Confirmed.

75 4/25/2025

Building

Monitoring

G-series Drawings refer to specification section 02 2900

Structural Building Monitoring, but this is not found in the provided specifications. S-001 notes monitoring to be by others. Please confirm that all monitoring is to be provided by Others.

Confirmed; monitoring is provided by others. Refer to notes on

S-001 and S-003 for information on extent of monitoring during construction and contractor responsibility. Note on G-series should be amended to reference S-001 and S-003 instead of 02 2900.

76 4/25/2025

Elevators

Detail 3/A415 notes to reclad existing elevator doors. Are these elevators currently under a service agreement with a particular manufacturer that can be used to solicit pricing from? What are the specification requirements for the paneling?

Service contract does no cover elevator finishes. Service contract is held by Elcon.

77 4/25/2025 General Does the loading dock used for construction deliveries have a pallet jack available for trade use? SI will not have a pallet jack available for use.

78 4/25/2025 Millwork

Is there the ability to store materials delivered to site in a conditioned space prior to installation?

Contractors can use the space within the Baird Auditorium footprint for storage of materials requiring conditioned space.

79 4/25/2025

Millwork Can there be a designated space, close to the work area, for casework/millwork activities?

Operations space can be set up inside of the Baird Auditorium footprint. Any additional space requests may be considered, but no additional space will be guarenteed.

80 4/25/2025

General

Within specification 01 0000 a schedule of required unit rates is provided but does not appear on the provided bid form.

Please confirm what unit rates are to be submitted on the bid form. See question 22.

81 4/25/2025 RFP

Can the Historic Preservation specialist and QCM be the same person? See question 23.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

82 4/25/2025

Masonry

Restoration

Per the brick barrel vaults in the dressing room and the

Electrical/Telecom/AV & Lighting Control Room are supposed to be painted. Will there be any restoration work for those brick barrel vaults prior to painting?

No damage to brick or mortor was observed. We do not anticipate the need for restoration work to the brick barrel vaults. Properly prep surfaces to receive new paint.

83 4/25/2025

General How much laydown space will there be for staging?

Space within the Baird footprint will be available for contractor allocation. Additional unconditioned/uncovered laydown space may be provided in the East Parking Lot area.

84 4/25/2025

General

Please verify per G-101-FP Work Zone Consideration Notes that all hazardous materials should be removed through the

East Loading Dock instead of the West Loading Dock as the rest of the project requires. If this is correct, please clarify the access route and temporary protection requirements for the East Loading Dock.

All hazardous materials should be removed from the building through the East Loading Dock. Please provide same protections as outlined on sheet G-100 and in the specifications. Refer to spec 01 0000 SUPPLEMENTARY CONDITIONS FOR CONSTRUCTION, Section 16.5.

85 4/25/2025

Fall Protection

Specification 11 02400 Suspended Fall Protection is included in the bid documents. On the drawings fall protection is only noted on XE-001 under the Fall Arrest Note that “Fall

Protection Potentially Required”. Please clarify if fall protection is required and the extent of the system requirements. See question 46.

86 4/25/2025 General

Please confirm that during major demolition activities multiple dumpsters will be allowed to be staged with additional space to pull and swop dumpsters.

Multiple dumpsters may be allowed during demolition operations by request and based on space available.

87 4/25/2025

Site Access

Can the carriageway entrance and 999 doors be used for access when concrete must be placed in the auditorium? It will be nearly impossible to pump concrete from the loading dock because system friction will be excessive over that distance. Full size Georgia buggies will not fit in the corridor from the loading dock to the auditorium. Smaller buggies to convey concrete will reduce efficiency, limit pour sizes and increase cost because it will still need to be conveyed by some other means onto the risers and sloped surfaces of the space. Ideally a system pump could be staged near the carriageway entrance and a shorter run of pump hose be run directly to the space. The carriageway could be kept clear and egress available and this would only take place on certain days. Please consider if staging a concrete pump outside near the carriageway and pumping into the building either through the 999 door or existing window openings is acceptable. See question 12.

88 4/25/2025 Site Access

If pumping is not allowed, please provide weight restrictions for the proposal steel structure to determine what or if equipment could be used for placing concrete. See question 12.

89 4/25/2025

Concrete

For determining pour sequence, please confirm if a construction joint is permissible at the bottom of the seating area turn downs.

Confirmed, the proposed pour joint location will be acceptable. Pour sequence information should be provided during CA as a submittal for final review by EOR.

90 4/25/2025

Metal Restoration

On sheet AD-121 note AD112 appears to be asking for window grilles to be removed for restoration. Please confirm if grilles are anchored into masonry or if they can be unbolted. If anchored into masonry please provide instructions on intent for removal.

Most of the bolts used to secure the grilles are in the mortar joints between the glazed brick in the carriageway. They may be unbolted; however reinstallation should use the existing bolt locations to avoid further damage to the historic glazed brick.

91 4/25/2025

Masonry

Restoration

Please confirm the granite base cleaning on A-201 is limited only to the carriageway.

Yes, the granite base cleaning is limited to the carriageway only, generally between column lines 7.0 and 9.0.

92 4/25/2025

General

Please confirm that approximately 180 special events from

9pm-midnight a year should be considered in productivity when working in off hours for work zone 1 and 4 activities.

On average there will be 5-10 events that last until 11pm and an additional 50 lasting until 10pm. Vendors will remain in the building after the events but will not effect contractor work.

93 4/25/2025

General

For determining the sequence of events, should work zones 1 through 4 be considered phases of construction? Would it be acceptable that work zones 1 and 4, which note off hour working activities, to occur concurrently?

Zones can occur concurrently as long as all other criteria for safety and egress are met per specifications and drawings.

94 4/25/2025

General

For the scope of work in the mezzanine level and above the auditorium Guastavino ceiling, are there loading and/or weight restrictions within this space?

Limit construction live loading to 40 psf within mezzanine and 25 psf above Guastavino vaults within accessible chambers. Material storage on Guastavino is not permitted.

No live load permitted on the stage dome hemisphere aside from individual workers.

95 4/25/2025 Roofing

Is there an existing warranty and/or service agreement in place that can be considered for the limited roofing repairs scope of work? No there is not.

96 4/25/2025

Doors

The 999 door is called to be available at all times for egress, but the plans call for the door to be replaced. What is the procedure to follow when it comes time to replace this door?

The schedule for the door replacement is to be coordinated with the COTR and SI Security Officer. Work to occur off-hours so that door remains operable during all normal working/ business hours without exception. Contractor to assure all materials available prior to removal of existing door and beginning of work to minimize duration of work to the greatest extent possible.

97 4/25/2025

Structure

Drawing SF-461-MP note calls for “post locations to be set by allowable slab spans”. Please confirm that post locations have been structurally designed and delegated design is not required.

Confirmed, posts have been structurally designed and delegated design is not requried. The exact coordinates and dimensioned locations of posts is to be set by the contractor based on the provided edge of slab dimensions by the architect and max spacing guidelines provided on SF-

461-MP.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

98 4/25/2025

Structure

Will sleeves be acceptable in the slab on metal deck for the floor diffusers instead of core drilling? Core drilling will generate excessive noise and water. If sleeves are acceptable, please confirm what material type is acceptable.

Confirmed; intent is to use sleeves for metal deck floor penetrations as noted per structural keynote 41 on SF-411-MP. Refer to details 3 and 4 on SF-501-DT.

99 4/25/2025

Masonry

Restoration

Detail 10 on SF-503 shows how the existing openings in the

Guastavino need to be filled. There is a note that says, “Finish tile installed as part of future work, N.I.C.” The floating tile repair detail (Detail 1/AC-200) calls out sound tiles which will float over cracks in the structural vault; if a new finish tile is installed for this repair, should a new finish tile be installed over the infill?

The floating tile repair (1/AC-200) is independent of the small diameter infill detail (10/SF-503-DT). The note stating “Finish tile installed as part of future work, N.I.C.” is incorrect and instead should reference AC-series drawing for finish tile repairs. Please note that detail 10/SF-503- DT is included for reference only if field conditions reveal any existing openings that require infill and is not keyed on plan drawings at any locations.

100 4/25/2025

Doors

What is the extent of the scope for patching/repair? Please confirm if the door restoration spec is applicable to the project.

Historic wood doors to remain should be cleaned and all loose and flaking paint removed to a sound substrate for refinishing. See Section 09 0391 "Historic Treatment of Plain Painting" for paint removal, surface preparation for refinishing, and refinishing historic wood doors.

Replacement of damaged or deteriorated components that should be repaired or replaced according to Section 08 0314 "Historic Treatment of Wood Doors".

101 4/25/2025

Plaster

Restoration

Detail 1/AF-601 and Detail 2/A-414 call for the installation of

Acoustical Wall Plaster on top of the historic plaster barrel vault, but the Room Finish Schedule calls out the wall finish as ACW and the ceiling as plaster. Please clarify the intent for

ACW installation. Please also confirm whether or not restoration work is needed on the historic plaster barrel vaults before ACW installation.

The barrel vaulted ceiling should be finished in Remove existing non-historic acoustical plaster/ treatment from the existing barrel vault. This treatment does not continue along the walls. The existing plaster wall with reveals should be patched, repaired, and repainted.

102 4/25/2025

Adjustable

Acoustics

Pittsburgh Stage is not listed as an approved acoustic traveler drapery manufacturer per section 2.1B in specification 116112. Pittsburgh Stage fabricates their own curtains and could provide a stage curtain that meets the specified requirements and fabrics. Would a substitution request be accepted?

Yes, a substitution request would be considered, but curtain needs to match architect's sample for fabric type and color. The basis of design is to match the color of Architex Admiral Evergreene.

103 4/25/2025

Auditorium

Seating

Specification 126715 lists only one acceptable manufacture per section 2.1A. Can an alternative manufacturer be considered for this scope? What information would be required to submit a substitution request? See question 49.

104 4/25/2025 Masonry

Restoration Does SI have any stone attic stock for use?

See question 38.

105 4/25/2025

Masonry

Restoration

Please confirm SI will inspect section 5 ceiling area of auditorium when access is provided. The construction team is not required to provide a survey. See question 39.

106 4/25/2025

Masonry

Restoration

Please confirm low pressure water and cleaners are intended for use on the ceiling Guastavino tiles. Please note interior cleaning of ceiling surfaces with water can be problematic for collection/disposal and protection of adjacent surfaces. See question 40.

107 4/25/2025 Demolition

For the demolition debris removal, please consider allowing the use of the 999 Door to remove materials in off hours while also maintaining egress. See question 12.

108 4/25/2025

Wheelchair Lift

Wheelchair lift specification 14 4216 2.2.N notes that the metal finish is to be selected by the manufacturer’s available options and notes bronze and aluminum. There will be a price difference in various metal materials. Please clarify what the metal finish is intended to be for the wheelchair lift.

The material and finish for the wheelchair lift should be aluminum in a custom color. For example, the basis of design was the Ameriglide Hercules 1000 lb lift which is offered in a custom color based on the RAL universal color chart.

109 4/25/2025 AV

Item #1 – Loose Equipment in Appendix A Section 274116, Appendix A, “Loose Equipment (All OFE)” Section is indicated to be all owner furnished equipment. However, the “25’ 8-Channel Fan to Fan XLR Snake”, audio fan cables, and W1 Stage Box are labeled “By AV Contractor.” Please confirm that the forementioned equipment is to be provided and installed by the awarded AV contractor.

Any equipment detailed in the "Loose Equipment" section does not need to be provided by the AV contractor. Any an all cabling required to provide a fully functioning system to be provided by the AV contractor in the base bid.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

110 4/25/2025 AV

Item #2 – Recessed Ceiling Mounted Projection Screens Specification Section 274116, Appendix A specifies that the PSVC systems contractor is to provide ceiling mounted projections screens. Projection screen manufacturer indicates that there is be a case or enclosure for the projection screen housing. However, there is no mention of who is to provide the recessed enclosure/cut out for the projection screens. Please confirm that the General Contractor will provide all projection screen housing and finish trim for these screens. If AV Contractor to provide housing/mount, please provide additional projection screen mounting details.

AV contractor to provide Draper Paragon V motorized projection screen complete with screen and motorized casing. The screen will be mounted from the primary and secondary support structure shown in the drawings and detailed on sheets A-403-FP, A-404-CP, A-405-SC, and SF- 413-MP. Final mounting designs for the projection screens are the responsibility of the AV Contractor. See question 112 for clarification on rigging submittals.

111 4/25/2025 AV

Item #3 – Acceptance and Commissioning Duration for PSVC System Section 274116, item 1.12-D states, “Allow minimum four days on site, with two technicians with and test equipment to demonstrate and adjust systems at the direction of the consultant.” However, in Section 274116, item 3.5-B-5 states “Allow minimum five days on site, with two technicians….” Please confirm whether 4 or 5 days are needed for on-site commissioning or testing.

Four days will be needed for on-site AV commissioning.

112 4/25/2025 AV

Item #4 – Missing Reference Specification Specification 274116.61 Appendix A note A.1.2 states for rigging design required by this integrator to reference spec 274100. However, Specification 274100 does not appear to have been provided. Please provide this document.

Typo. Should refer back to Spec Section 274116.61 - Performance Sound, Video, and Communications Systems and Equipment. Specific details regarding the rigging submittal are detailed in section 1.5-C-2-a.

Bid Phase RFI Response Issued 5/22/2025

Number Date Received Discipline Question Response

113 5/7/2025 Demolition

I’d like to request that copies of the as-built architectural and structural as-builts would be shared with the bidding contractors. It’s difficult to know what conditions we want to see further detail on without actually seeing a copy of the as-builts to start with.

We will provide select sheets from the original 1909 documents for reference only. Please note that the in a building of this age, not every alteration over it's 120 year lifespan has been documented. Contractor is responsible for field verification of conditions. See:

Historic Drawings for Distribution 1 - Select Original Dwgs.pdf Historic Drawings for Distribution 2 - 1978 Stage Reflector & Alcoves.pdf

114 5/7/2025 Demolition

If as-builts are not going to be shared then we would like to know the following information;

- Demolition drawings reference existing brick piers and concrete piers;

o Can we get details of the construction of these brick piers?

hollow block construction?

masonry spread footings to remain?

o Can we get details of the construction of the existing concrete piers?

AD-110-DP or do they vary in some way?

existing masonry spread footings to remain?

o Which piers are brick and which piers are concrete? See question 113.

115 5/7/2025 Demolition

Which slabs from RFI #16 are assumed to be 6” base plus 4” topping slabs? The demolition drawings show slab ranging from the following thicknesses;

assuming this is the answer to RFI #16, but we’re assuming this isn’t accurate for all slab requiring demolition?

Auditorium and mud slab are assumed 6"+4" based on historic drawings. Following documents for all other assumed slab thicknesses.

116 5/7/2025 Demolition

What structural elements are supporting existing scissor projector lift?

o Sizing + layout of existing steel if it’s a steel girder construction. If not, then we need to know what exactly this support system is constructed from.

The existing projector lift suspended above the existing wheelchair lift is supported from steel beams on the underside of the mezzanine slab above.

117 5/7/2025 Demolition

What is the construction of the existing partition…