EP2-26 RFI Spreadsheet Rev_1.pdf

RFI #

Drawing/Spec

Category Page Number Question Response Attachment

1 Past Experience 102 Please consider allowing the past 10 years of experience in lieu of the past 5 years. This would allow for additional relevant experience, specifically for Smithsonian, to be included for evaluation.

In such fast-evolving market, 5 years of recent experience may be more valuable.

2 Key Personnel 100-101 Please advise if the quality control manager and historic preservationist roles can be filled by the same person, if they meet the requirements of both roles.

Both roles can be filled by the same person provided the person meets the requirements for both roles.

3 Key Personnel 100-101 Please advise if the requirements for safety manager can be adjusted to 5 years of experience in safety in lieu of 5 years as a project superintendent and 3 years as a safety manager.

Requirements can not be adjusted. They remain as noted in the solicitation.

4 N/A N/A

Executive Order (EO) 14603 indicates that all federal projects valued at $35 million and above will require a project labor agreement (PLA) unless a federal contracting agency expressly grants an exception. Government agencies have the discretion to require PLAs for contracts under the $35M threshold.

Please confirm if a project labor agreement will be required on this project.

Project Labor Agreement will not be required for this project.

5 N/A 02 2900

Specification section 02 2900-1.2-B - Structural Building Monitoring references monitoring drawings SM001 through SM203. These drawings do not appear to be provided in the specifications nor in the drawing set for EP2-26.

Please provide the referenced drawings.

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2

Attachment #2

6 N/A 02 2900

Specification section 02 2900-1.2-B - Structural Building Monitoring references monitoring drawings SM001 through SM203. These drawings do not appear to be provided in the specifications nor in the drawing set for EP2-26.

Please confirm if the structural building monitoring as outlined in the specification section is to be by the Contractor or by

SI.

If by SI, then please define any requirements needed from the Contractor for SI to execute its structural building monitoring.

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2

Attachment #2

7 EP2-26-S001 N/A

Please reference the "Monitoring" section of the "Project Notes" on structural drawing EP2-26-S001. This section requires the Contractor to provide monitoring and to meet vibration criteria be in compliance with Global Monitoring as outlined in a drawings and specifications issued in May 2022. There does not appear to be any documents dated May 2022 outlining the Global Monitoring Systems or requirements.

Please provide the May 2022 documents related to the Global Monitoring or confirm that this scope is not required from the Contractor.

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2

Attachment #2

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

8 EP2-26-S001 N/A

Please reference the "Allowances & Contingencies" section of structural drawing EP2-26-S001. Per this section, the "Contractor shall provide allowances for the following items where additional contingencies are recommended. Only provide unit prices as noted in Division 1 of the specifications.

Repairs

1. Infill existing load bearing masonry walls at all existing mechanical and architectural penetrations where no longer used.

Tooth into existing adjacent masonry. All penetrations not intended for new MEP systems or architectural openings shall be infilled.

2. Infill existing floors at all existing mechanical and architectural penetrations where no longer used. See typical details for floor infill details (both in brick architectural floor systems and concrete slabs). All penetrations not intended for new MEP systems or architectural openigs shall be infilled."

Please provide the following clarifications:

a. SI should establish either an allowance dollar value or an allowance quantity for this work in order for bidders to have comparable scope for evaluation by SI. Please advise.

b. Please confirm "where additional contigencies are recommneded."

a. Assume an allowance of approximately 400 cf of masonry infill for Vertical chases and openings in the existing masonry walls between level 3 and the roof.

In all other locations where existing mechanical and architectural penetrations will no longer be used, the openings do not need to be infilled during EP2-26.

The exception is if removal of MEP piping and ductwork requires additional removal of structural walls or floor framing. In these cases, the contractor will need to notify the COTR to determine if infill is required.

b. Please ignore "where additional contingencies are recommended."

9 N/A 04 0140.62

Specification section 04 0140.62 summary of work appears to reference scopes of work such as repointing of joints in exterior sandstone and exterior brick masonry and at interior rubble stone at Towers all as indicated on drawings.

There are no exterior building elevations included in the documents and none of this scope appears to be indicated on the drawings.

Please advise. Please revise and reissue this specification to clarify the requirements.

There is no repointing at joints in exterior sandstone, exterior brick masonry or interior rubble stone. Remove Specification section 04 0140.62 and replace with 042000 Brick Masonry for scope associated with brick repairs in structural drawings.

Attachment #1

10 N/A 04 0140.62

Specification section 04 0140.62-1.3-B indicates that quantities for repointing are indicated on drawings and that unit prices are to be provided.

There does not appear to be any quantities indicated on the drawings. Please advise. Please revise and reissue this specification to clarify the requirements.

Remove Specification section 04 0140.62 and replace with 042000 Brick Masonry for scope associated with brick repairs in structural drawings.

Assume an allowance of approximately 400 cf of masonry infill for Vertical chases and openings in the existing masonry walls between level 3 and the roof.

Attachment #1

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

EP2-26-SD-series;

EP2-26-S521

N/A

General Sheet Note 4 on the EP2-26-SD-series drawings includes a note that states as follows: At existing masonry walls, perform crack repairs where damage is uncovered due to removal of finishes.

Structural detail EP2-26-S521 provides a typical repair in brick masonry.

As there is no way to quantify the potential extent of crack repairs, please provide guidance on how Contractors shall price this item to SI or confirm if SI will establish an allowance dollar value or an allowance quantity upon which pricing should be based.

Crack repairs at existing masonry walls are not required in EP2-26. However, infill of existing vertical chases between level 3 and roof is required.

a. Assume an allowance of approximately 400 cf of masonry infill for vertical chases and openings in the existing masonry walls between level 3 and the roof.

In all other locations where existing mechanical and architectural penetrations will no longer be used, the openings do not need to be infilled during EP2-26.

The exception is if removal of MEP piping and ductwork requires additional removal of structural walls or floor framing. In these cases, the contractor shall notify the COTR to determine if infill is required.

12 EP2-26-H-series N/A

Note 3 on the EP2-26-H-series drawings indicates that window systems hazardous materials removal is to occur during building package phase. Item EE in the asbestos containing materials schedule on these sheets indicates window system caulk.

Please confirm that abatement of window system caulk (interior or exterior) is NOT included in EP2-26.

Abatement of window systems (asbestos and lead) does NOT occur during EP2-26.

Refer to H series drawings which identify locations of hazardous materials that exist in the building and may be encountered during the course of construction.

13 N/A N/A

Due to the significant overlap between the EP2-26 bid and the SI's Cheetah bid and SI's Bezos Learning Center project, the subcontracting community is requesting that the bid date for the EP2-26 project be revised from 07/09/24 to 07/23/24.

Please advise.

Due to the tight schedule, we are unable to extend the deadline.

14 N/A N/A

Due to the significant overlap between the EP2-26 bid and the SI's Cheetah bid and SI's Bezos Learning Center project, the subcontracting community is requesting that the due date for RFIs for the EP2-26 project be revised from 06/06/24 to 06/28/24.

Please advise.

Due to the tight schedule, we are unable to extend the deadline.

15 1/EP2-26-CS100

Please provide detail of required vehicular matting protection that is to be utilized for the exterior construction drive/area.

For pricing, the basis of design for the construction protection matting are:

-DuraDeck for greenspace:

https://www.signature-systems.com/duradeck -Matrix HD for hardscape:

https://www.signature-systems.com/hardscape-protection-mats

16 Commissioning Please confirm that all commissioning activities with be by an agent contracted directly by the Smithsonian Institution. Confirmed

17 EP2-26-S001 Please confirm that all 3rd party testing and inspections, including special inspections, will be by the Owner. Confirmed

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

18 EP2-26-S001

The language of the required monitoring is consistent with the previous Castle Solicitation, which included extensive SOE and Pile work for the building foundations that are not present with the current solicitation. Please confirm the extent of the monitoring, local & Global, that is required and if this can be reduced to reflect the current scope of work for EP 2-26.

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2 Attachment #2

19 EP2-26-CS100

The Drawing Legend notes that the Tree Protection location is only for reference and that we should refer to additional Tree Preservation plans & details in addition to the specification. Please provide these drawings and details.

See attached EP2-LJ-500 TREE PRESERVATION DETAILS. Attachment #3

CPM Summary

Schedule

All references for the Contractor's schedule are for MS Project Gantt Chart format. Please confirm that we are able to submit out construction schedule in Primavera P6 as this format provides clear activities, critical path, and milestones as well.

For the solicitation phase, contractor's Schedule should be in Gantt Chart Format submitted as a PDF file.

During the project construction phase, Contractors Schedule should be in Gantt Chart Format submitted as a PDF file. MS Project or P6 files will be accepted along with pdf of the Gantt Chart submittal.

010000 14.4 - Job

Site Security Please provide clarification of what security the Contractor is providing 24/7.

Provide a minimum of 1 person at any entrance that is utilized during work hours + 1 site rover, and 1-2 people (1 at desk, 1 rover during non-work hours.)

Existing electronic security systems (access control and CCTV) for areas other than the areas of demolition, shall be maintained in operable condition, as well as systems on existing exterior doors. See also spec section 01 0000, 57.1 & .2, and drawings EP2-26-TD-104-106 for additional requirements. SI will remove moveable security screening equipment prior to start of construction.

22 EP2-26-M-430 Please confirm if existing steam piping vaults are to be considered confined spaces for both the street vault and vault next to the AIB.

They are both considered permit required confined spaces.

23 3/EP2-26-M-430

There is a rectangle bold box indicated at the top of the vault but no information or identification of this is provided.

Please clarify the intent of this box.

Box is an electrical disconnect switch within the vault. Switch is indicated on detail 2 of sheet EP2-26-EP110.

Civil work in

Jefferson Drive Civil drawings do not show vault work for utilities in Jefferson drive. Please confirm that all requirements and information needed for work in Jefferson Drive is covered via the MEP drawings only.

There will be no site disturbance in Jefferson Drive. All steam work will take place within an existing vault and steam tunnel under Jefferson Drive.

Temporary

Conditioning Please confirm that the mechanical sequence shown in the drawings is sufficient for temporary conditions that will be needed for all spaces or will we need to bridge gaps in the service.

We are assuming the Contractor is referring to the Temporary Conditioning notes on drawings MH104 thru MH106. If so, the intent of the mechanical sequence to meet the requirements for temporary conditioning is confirmed.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

26 Fire Dampers Please indicate the locations of any required fire dampers at duct penetrations as none are currently indicated on the mechanical drawings.

Any new ductwork entering existing shafts require new fire dampers as shown on plans. Refer to general note on EP2-26- MH122 and EP2-26-MH123.

27 Elevator Please provide the dimensions of the elevator cab that we will be able to utilize for contruction.

The three existing elevators are scheduled for demolition in this contract, at a time convenient to the contractor. Existing dimensions are: South Elevator is 4'-9" W x 4'-6" D x 7'-6" H. East Wing Elevator is 3'-4" W x 3'-0" D x 7'-6" H. North Tower Elevator 3’-11”W x 3’-9”D x 7’-5”H

28 Smoke Detectors Please provide the locations of all required smoke detectors for the AHUs as these do not appear to be shown on the mechanical drawings.

Please refer to the EP2-26 fire alarm drawings EP2-26 FA116, FA120, FA122, FA123.

29 Fan Coil Valves Please confirm that isolation valves are required only at the Fan Coil Units.

Confirmed. All hydronic coils as indicated on the mechanical details require isolation valves.

30 EP2-26-MP120

Please confirm that noted piping in grey is for information purposes only and the notes indicating piping sizing at risers denotes existing piping sizing only that we are to tie into.

All annotated piping in grey is for reference purposes only, and pipe sizing noted is reflective of the existing hydronic systems meant for potential reuse/reconnection.

31 EP2-26-MP123 Please confirm that the 25 (1") DHW piping noted is actually condensate piping.

The 25 (1") DHW pipe in question is condensate drain pipe. Size as depicted on the drawing is accurate.

32 EP2-26-M-603 Please confirm the work associated with CU-1, CU-2, BC-1, BC-2 units that is required to be included in our scope of work. The drawings indicate this equipment is existing to remain.

EP2-26-PD118

Keynote 1 Please clarify the extent of the work required for faucets and flush valves with an assumed quanitity we should include or is there an allowance for this work that can be provided?

30% repair/replacement allowance should be carried in the Bid. Repairs would include replacement of internal parts, faucet cartridges, diaphragms and trim.

Total existing quantities: 14 Lavatories, 14 Water Closets & 8 Urinals.

34 Hazmat/Demolition Drawings indicate that all plaster is to be removed from the 3rd and 4th floor levels. Is Lead based paint anticipated on the interior brick of the exterior walls?

Based on inspections of accessible, exposed, perimeter (exterior) brick walls located on the 3rd and 4th floor levels, no lead based paint was encountered/observed under plaster/drywall.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

35 EP2-26-H118/9

Per first floor Haz drawings EP2-26-H118 and EP2-26-H119, scheduled fan coil units are denoted by a square field with a dot within the field and associated lettered key notes. Within the main hall the these shapes are not specifically identified by the associated lettered key notes. Please confirm scope for these items are governed by the associated key notes for HAZ. Additionally, will these areas need to be specific spot removals or contingent with gross removal?

Hazardous Material drawings identify the listed hazardous materials within a given area as well as the quantity.

For EP2-26, each area where hazardous materials work will be required, materials are listed. During EP2-26 within the Great Hall Level 1, work is limited to fan coil unit replacement and only those hazardous materials being impacted by fan coil replacement work are to be removed, as noted under General Hazardous Materials Notes #2 and #3.

All remaining hazardous material abatement is to be addressed during a later phase. Refer to Architectural/Mechanical demolition drawings for the extent of work required.

The square field with a dot represents the fan coil unit impact areas/location.

36 Demolition There seems to be a lack of identifying key notes for window removal on levels 3 and 4. Please confirm scope of work. No window removal is required in EP2-26.

37 Demolition Work to take place within elevator shafts is scheduled for this project. Please confirm expectations and level of protection required to protect existing to remain shaft walls.

Elevator hoistway walls are going to be removed during the building package.

Protect the exterior of the hoistway walls that are in public areas and will be visible to visitors during 2026. There are no specific requirements for protection of the hoistway walls that are in public areas.

There are no specific requirements for protection on the interior of the shaft other than the walls shall remain structurally stable.

38 Demolition Ceiling demolition of level 5 is unclear. Please confirm extent of scope of work or verify associated key note jurisdiction.

There are no ceilings on level 5 of the main building. The space is open to the roof trusses above. Reference note on

2/EP2-26-AD156.

39 Bid Due Date Extension

Due to the close proximity of the July 4th Holiday, we are requesting a bid extension to the week of July 15th, 2024.

Due to the tight schedule, we are unable to extend the RFP deadline.

40 Key Personnel The safety manager is listed as key personnel. Is this person required to be onsite full time?

As stated in the RFP, "Once construction starts, this shall be a full-time position located on the project job-site until the project is accepted for beneficial occupancy."

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

41 EP2-26-SD-122

Keynote D1004 notes that “after base plate is removed, patch floor with concrete.” Please provide a patching detail or provide clarity on whether any doweling or reinforcing will be necessary.

For this condition, there is an existing topping slab that encases the base of the column and the column base plate. The column base plate sits on top of a concrete cap. Only the topping slab should be locally removed to remove the column and column base plate. The topping slab should be locally poured back with 6x6 W1.4xW1.4 W.W.R. No need to dowel between this and the existing topping slab.

42 EP2-26-SD-124 Keynote D1007 states to “make repairs as necessary at mullion.” Please clarify this scope.

Per existing documentation, there is an angle that supports the edge of the existing slab at the face of the window which is scheduled for removal. Care should be taken to not damage the window or mullion to remove this angle, but it is anticipated that there may be minor repairs to the masonry mullion after removing the angle.

43 EP2-26-AD-118/122

Multiple key notes require salving and turning over materials to the Smithsonian (ie notes, 481, 486, and 480). Please clarify if protective packaging, crating or delivery to an offsite location is required as part of this scope.

See packing and crating requirements in specification section 02 4200 - 3.4.C .

Deliver material to SI's facility in Suitland, Md.

44 EP2-26-AD-169/173

Keynote 181 on drawings AD169 and AD173 states to “REMOVE FLAT PLASTER AT CEILING DOWN TO BRICK MASONRY.”

This same note is denoted by a triangle hatch pattern. However, the triangular hatch pattern and note 181 are not consistent across the drawings. For instance, there are spaces that have both the hatching and the note while other spaces only have the hatching. Please provide clarification on whether keynotes or hatching should be followed where there is a discrepancy.

Keynote 181 is a typical note. Follow the triangular hatch pattern in the legend for scope of flat plaster removal.

45 EP2-26-AD-169 Keynote 870 is on drawing AD169 but not included in the keynote description. Please confirm that these vestibule doors are to be salvaged for reinstallation later.

Keynote 870 is to read: "REMOVE AND

SALVAGE FOR RE-INSTALLATION."

46 EP2-26-AD-169

On drawing AD169, note 183 is noted in Corridor 127. This keynote is not included in the notes on this page. On other pages, this note states to “REMOVE EXISTING SUSPENDED GYPSUM BOARD OR PLASTER CEILING.” Please confirm that this is in the design intent in Corridor 127.

On drawing AD169, add Keynote 183:

"REMOVE EXISTING SUSPENDED GYPSUM

BOARD OR PLASTER CEILING."

47 EP2-26-A-127

On drawing A127, there are some darker line weights around E3ST2 and 4ST2 doors but no clear indication of scope.

Darker lines typically indicate new work. Please provide clarification on if there is any new work in this area.

There is no new work at Campanile Tower on Level 5 or above.

48 EP2-26-AF-118

On the Level 1 finish plans (AF118), keynote 442 is noted in all the restrooms and states “REPAIR ANY TOILET ACCESSORIES AND PARITIONS AT RESTROOMS AS REQUIRED.” Please quantify this scope for pricing purposes.

Assume 30% replacement of existing toilet partition locking mechanisms, toilet tissue dispensers, seat cover dispensers, sanitary napkin disposal, baby changing stations, and hand dryers, and paper towel dispensers.

Existing Furniture/SI item removal Please confirm that all furniture, boxes, owner items, and any wall hanging art work will be removed by Smithsonian prior to the contractors commencement of demolition activities.

All items will be removed before demolition activities begin.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

EP2-26-SD-119/S-

There are areas where it appears work is required and indicated by darker line weights or boxes, but no callouts or item descriptions are provided. An example is on SD119 & S119 at the exterior wall just the the right of the "Existing Stair" callout on S119. Please clarify the scope of work that is being indicated or if these areas without clearly identified scope can be excluded and assumed as existing materials to remain.

For structural scope, these areas are assumed as existing materials to remain.

No additional structural work is being indicated with these areas. All structural work is called out with keynotes (and see sheet notes for additional information).

See Architectural drawings for removal of finishes.

51 EP2-26-MP-140 Detail 1 notes that the new steam piping shall run below the new 6 way electrical ductbank. Can a cut through elevation be provided to shown the depth and proximity of this intersection of piping/ductbanks?

A cut through elevation has been provided on EP2-26-M-430 detail 2.

52 EP2-26-MP-140 Please provide a elevation/cut detail of the existing slab we are to saw cut and run piping underneath as noted in Detail 1.

The requested elevation/cut can be located on EP2-26-M-430 detail 2.

53 EP2-26-MP-140

Detail 1 shows a hatched wall (near the center of the detail) just before the new steam piping penetrates the exterior wall.

There are also several grey boxes which appear to be mounted to, or near, this hatched wall but no scope or notes are provided. Please clarify what work we are to provide at this wall.

Contractor to remove wall that is hatched as well as the existing de-energized electrical panels mounted on that wall to allow for trenching. Contractor to verify with SI and field testing that panels are de-energized.

54 RFP L.2

Section L.2. Key Personnel and Subcontractors states, "Special consideration will be given to firms and individuals with experience on projects involving listed, nationally significant historic buildings, historic campus, and urban campus settings." Please consider updating this statement to say, "Special consideration will be given to firms and individuals with experience on projects involving listed, nationally significant historic buildings, historic campus, and/or urban campus settings."

Update statement to read: "…historic campus, and/or urban campus settings."

55 RFP L.3 Please confirm that projects submitted in response to Section L.3. Past Performance may be in progress.

Yes, project past experience can be considered even if the project is still in progress. When referring to past experience, it typically means the work and achievements you have accomplished up to the current point, regardless of whether the project is complete or ongoing.

56 030130 Reference Spec Section 030130 - Maintenance of Cast-In-Place Concrete. Please confirm that the only concrete repair is at those areas indicated by Mark D1004 (floor patching at removed steel column base plates). There is currently no work shown involving crack repair, spall repair, rebar corrosion replacement, etc.

Correct: currently, there is very limited concrete repair work anticipated for EP2-

26. Similar to the typical repair in brick masonry (see RFI 59), this specification section has been included in case additional concrete repair work is identified during construction.

57 040140.62 Reference Spec Section 040140.62 - Masonry Repointing. Please confirm that there is no masonry repointing required for the Early Package since none is shown on the interior or exterior walls.

Remove Specification section 04 0140.62 and replace with 042000 Brick Masonry (attached) for scope associated with brick repairs in structural drawings.

Attachment #1

58 042200 Reference Spec Section 042200 - Concrete Unit Masonry. Please confirm that there are no CMU walls required for the Early Package and the CMU at the East Wing elevator shaft will be constructed in future work.

Confirmed, there are no CMU walls required for the Early Package and the CMU at the East Wing elevator shaft will be constructed in future work.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

59 EP2-26-S521 Reference Detail 2 - Typical Repair in Brick Masonry. Please provide locations where brick wall crack repairs are required.

Specific locations for brick crack repair have not been identified due to the presence of finishes, but the detail is provided in case cracks in the brick masonry are exposed during construction.

60 EP2-26-S001

Reference Structural Notes - Allowances & Contingencies. Repair Note 1 says to infill load-bearing masonry walls at existing mechanical and architectural penetrations where no longer used. For bidding purposes, please provide an allowance quantity of wall openings requiring masonry infill.

Vertical chases and openings in the existing masonry walls between level 3 and the roof should be infilled with new masonry. Assume an allowance of approximately 400 cf of masonry infill. In all other locations where existing mechanical and architectural penetrations will no longer be used, the openings do not need to be infilled during EP2-26. The exception is if removal of MEP piping and ductwork requires additional removal of structural walls or floor framing. In these cases, the contractor will need to notify the COTR to determine if infill is required.

61 EP2-26-MD118

Reference the HVAC Demolition Plans. It appears that all of the existing fan coil units will be demolished. Please provide a section detail which shows the floor / wall penetrations for the supply and return piping. Are all the penetrations vertically through the floor?

Refer to keynote 1 and general note 1.

Both requiring reuse of existing penetrations. Confirm installed condition in-field.

EP2-26-AD-104-thru-

Note 19 refers to stencil documentation of the decorative paint schemes. Please confirm which rooms have decorative paint schemes that are to be documented. If the paint schemes are not presenting (visible), please confirm if exposure windows (removal of post-historic paint layers) are required and the extent to which the paint investigation is to occur (e.g., 4 foot wide drops including ceiling, multiple significant campaigns, stratigraphy, binder composition).

General note 19 can be removed from project. If additional decorative elements are uncovered during demolition, coordinate with COTR prior to any further removal.

EP2-26-AD-104-thru-

Note 19 refers to documentation of decorative plaster. Please confirm room locations of decorative plaster removal and if molds are to be taken.

General note 19 can be removed from project. If additional decorative elements are uncovered during demolition, coordinate with COTR prior to any further removal.

64 EP2-26-AD446

Note 809 refers to retaining decorative plaster wall elements, however there are no locations depicted. Please provide locations.

Keynotes are done with written text on the AD400 elevations provided. "RETAIN

DECORATIVE PLASTER WALL ELEMENTS,

TYP" is a written note on multiple elevations. Generally areas that are shown without a wall pattern that are dimensioned (typically 5" holdoff) are zones with decorative plaster.

65 AD105 & AD106

Reference Demolition General Note #15. Confirm flat plaster walls on masonry substrate at Levels 3 & 4 of the main building are to be removed and no 24" x 24" areas are to be retained for future analysis at the Main Building Levels 3 & 4 as none are indicated.

Incorrect. A 24"x24" zone for each substrate shall be provided on Levels 3 & 4 of the Main Building. Demolition General Note #15 indicates to coordinate the location in this area with COTR. It will likely be in the library (Room 384) at the far west side of the floor plan.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

66 AD122 thru AD125 Demolition General Note #17 on the demolition floor plans indicate decorative murals are to be protected. Confirm no decorative murals are to be protected at Levels 3&4 at the Main Building.

There are no decorative murals on Levels 3 & 4 of the Main Building.

Areas to be protected are those areas outside the areas of demolition but through which the Contractor might need access for the completion of the work.

Example: South Entrance Room (Children's Room) ceilings, walls, floor, door, etc.

67 AD169 thru AD175 The reflected ceiling demolition plans do not indicate any 24" x 24" plaster ceiling areas to be retained for future analysis.

Confirm this is the intent or provide quantity.

Keep two 24"x24" zones for plaster ceilings to be retained for future analysis.

Locate one in the East Range L1 Corridor, the second in a East Wing L1 office.

AD119 thru AD125;

AD169 thru AD175

Demolition General Note #17 on the demolition floor plans indicate decorative ceiling paint is to be protected but no areas are indicated on the demolition reflected ceiling plans. Provide locations and extents of decorative ceiling paint required to be protected.

General note 17 to be revised to

"PROTECT MURALS AND/OR DECORATIVE

CEILING PAINT, UNO." Areas to be protected are those areas outside the areas of demolition but through which the Contractor might need access for the completion of the work. Example: South Entrance Room (Children's Room) ceilings, walls, floor, door, etc.

69 80314 - Treatment of Historic Doors

Provide location of "Owner's storage location". If onsite, provide level and area of storage.

Owner storage is located in Suitland, Maryland.

70 AD Drawings

Demolition General Note 11 states that the Owner will remove collection items throughout the Building prior to the start of the project and the Owner will identify the items that are existing to remain and contractor is responsible for protection in place. Please confirm or advise on which items will be remaining after Owner has removed collection items so we can establish the correct protection methods and associated costs per each item.

See attached list of castle artifacts and protection requirements attached.

Attachment #6

EP2-26-A-118 and -

Note 221 on sheets EP2-26-A-118 and -119 indicate to reinstall salvaged fan-coil unit access covers. The mechanical drawings indicate these to be removed and new units per the schedules, not salvaged or reinstalled. Please advise on the covers related to the FCU scope of work.

Replace fan coil unit as indicated in the documents. The existing unit access covers are to be salvaged and reinstalled.

EP2-26-A-122

through 125

There are temporary partitions shown on Level 3 and 4 however with the structural / floor demolition and coordination with other trades, please advise on the height of each partition, especially if there is no structure above depending on the Level in which they are shown to be installed.

Walls are shown to indicate the requirements for vertical support and protection of temporary ductwork and piping following demolition at levels 3 and

4. Contractor may propose alternative means for support of temporary ductwork in this location if fire dampers are installed at the third floor level.

EP2-26-S-140, EP2-

26-A-140, EP2-26-

M-140, EP2-26-

EP110

Sheets EP2-26-S-140, EP2-26-A-140, EP2-26-M-140, EP2-26-EP110 show different layouts and routings for dry utilities, steam, SOG patching, manhole vs non-manhole, etc. Please advise which drawing is correct.

The routing shown on the structural and architectural drawings is schematic and refer to electrical, mechanical. Refer to EP2-26-M-140, EP2-26-EP110 for routing systems.

74 EP2-26-S-002

Sheet EP2-26-S-002 Note 1 states that no seismic reinforcement is required, however Note 2 states to see the Early Package 2 for requirements. Please advise if there are any seismic reinforcements required for this package/project.

No seismic reinforcement is required for the EP2-26 scope of work.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

75 EP2-26-AF118

Note 442 on sheet EP2-26-AF118 states to repair any toilet accessories and partitions at restrooms as required. Please advise on a quantity and type of repair for each component or confirm that this is not required as part of the project.

Assume 30% replacement of existing toilet partition locking mechanisms, toilet tissue dispensers, seat cover dispensers, sanitary napkin disposal, baby changing stations, and hand dryers, and paper towel dispensers.

EP2-26-AF118 and -

AF120

Note 461 on sheets EP2-26-AF118 and -AF120 states to clean existing carpet to remain as required. Please advise as to the expectations of cleaning and what type of carpet is existing.

Existing carpet at first floor is broadloom and second floor is carpet tile, which will remain for office spaces to be occupied in 2026. Protect and/or clean carpet as required to achieve same condition as prior to start of construction.

77 EP2-26-AF601

Carpet Tile types on sheet EP2-26-AF601 state that the manufacturer and series/model will be determined by the SI.

Please advise on if this is to be covered as an allowance or has the SI selected any carpet tile so they can be priced accordingly.

See below for pricing finishes:

FCP-07, FCP-08

Manufacturer: Shaw Contract Pattern Name: Batik Tile Collection: Gather #5T348 Color: Classic 85496 Ashler Installation

FCP-06

Manufacturer: Shaw Contract Pattern Name: Tapestry Tile Collection: Gather #5T347 Color: Classic 85496 Ashlar Installation

WPN-14

Sherwin Williams Color: SW-6062 Vintage Leather Finish: Eggshell Finish

WPN-15

Sherwin Williams Color:SW-6062 Vintage Leather Finish: Semi-gloss

78 RFP Please extend the RFI deadline to June 21, 2024 to allow subcontractors more time to review the documents and submit relevant questions.

Due to the tight schedule, we are unable to extend the RFI deadline.

79 RFP Please confirm the wage scales provided with the RFP are to be utilized for pricing.

Correct, they are the current wage determinations.

80 011000a Section 011000a lists the castle artifacts with responsibilities assigned to the Architectural Conservator and General Contractor. Please confirm the GC is not responsible for requirements listed in the Architectural Conservator column.

Confirmed.

81 011000a Section 011000a lists the castle artifacts and protection requirements. Many of the General Contractor requirements indicate new finishes, restoration, and scope items not applicable to this Early Package. Please review and advise regarding which protection activities are applicable to this RFP.

Protection activities pertain to any historic interior features that will remain in place.

Features must be appropriately protected from adjacent construction work during the Early Package. The list of castle artifacts and protection requirements is being amended to clarify the scope under EP2-26. See attachment.

Attachment #6

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

82 RFP Please clarify if office space in the Arts and Industries Building may be utilized for the field office. AIB may not be utilized for field office.

83 RFP Please clarify material, for toilet compartments, whether they are to be stainless steel or HDPL.

Toilet compartments are not scheduled for demolition (see Demo Dwgs). Existing partitions are HDPE and are to remain.

84 EP2-26-IG103

On EP2-26-IG103, there is only reference to (1) type of sign needed on the project. However, there is no accompanying specification section for signage. Please confirm if the message sign ST RG.9T is the only sign needed.

Sign type ST RG.9T to be provided per drawing EP2-26-IG103. These are temporary signs with information provided on the drawing. Related specification section is not required.

Additional signage requirements can be found, but not limited to, Sections 01 0000 Supplementary Conditions for Construction, 028200 Asbestos Abatement, and 028300 Work Activities Impacting Lead Materials.

85 022900 SM series monitoring drawings referenced in spec section 022900 (Structural Building Monitoring) are missing. Are SM Series drawings to be provided?

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2

Attachment #2

86 01 0000 / 022900

Spec 01 0000 part (31.2) indicates the contractor is to coordinate and maintain the existing building monitoring system (movement and vibration monitoring), devices, and infrastructure installed under a separate contract. Please confirm the contractor does not need to furnish and install new instrumentation as referenced in Structural Building Monitoring specification 022900. Please confirm contractor is not responsible for any fees associated with ongoing monitoring services including access software and continuous monitoring data being provided under a separate contract.

Building Monitoring is being provided by a separate SI contractor. Section 02 2900 of the Specifications and Monitoring drawings (attached) are provided for reference only. Contractor responsibilities under this contract are outlined in the Supplementary Conditions, Division 010000-31.2

Attachment #2

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

87 01 0000 Spec 01 0000 part 31.2 indicates the contractor is to coordinate and maintain power for the existing building monitoring system (movement and vibration monitoring), devices, and infrastructure installed under a separate contract. Please provide power requirement information for monitoring systems to price accordingly.

For the vibration monitors:

•Each vibraƟon monitor needs access to

120V and 15A circuits. Up to 8 units can be run off of 1 circuit. Power should be provided into the box enclosures with a pigtail. The vibration monitoring contractor will make final connections from the pigtail to the monitors. Note monitors are spread across six (6) structures.

For the EXTERIOR movement monitors:

•Power must be provided to each total station setup with 120V and 15A circuits.

The final locations are subject to change in the field; For pricing purposes, include 10ea locations around SIB.

Both monitors will require uninterrupted power for the duration of the project plus a three-month period following the completion of the project.

Attachment #2

EP2-26-MD-119

Mechanical demolition drawing MD119 keynote 2 states that all existing mechanical systems in the east wing and east range shall be removed and that "dual tempoerature reverse return piping to be re-looped at the 1st floor slab." Sheet MP119 does not show new FCU's or piping in the east range or east wing.

1) Please confirm if permanent conditioning and/or temporary conditioning shall be included for the east wing and east range as part of the early package.

2) If new FCU's are required in the east wing and east range, please clarify if existing penetrations shall be used to connect pipe routing to units, and if penetrations run up through the L1 slab or through the wall.

1. Temporary conditioning shall be provide. Refer to Temporary Conditioning notes on Overall Mechanical HVAC Plans.

Areas with no new work indicated (the East Range and East Wing in this case) are to be provided with temporary conditioning.

2. N/A

EP2-26-MH-104

through MH-106

Temporary conditioning note 7 on MH-104 through MH-106 states that occupied spaces shall maintain a heating set point of 70F and a cooling setpoint of 75F. Please confirm if these occupied spaces refer to locations to be occupied following the completion of the work shown in these documents and that no spaces are to be occupied during the construction.

Please also confirm if there is a humidity requirement to be measured or maintained during construction.

Cooling and heating space temp. setpoints indicated for temporary conditions during construction would also apply to setpoints at completion of work. Refer to M801 and M802 for adjustable setpoint requirements.

For humidification controls - the intent is to maintain existing building humidification setpoints, with a minimum goal of 20% RH during construction.

90 EP2-26-MP140

Detail 1/EP2-26-MP140 shows an existing steam vault structure and references EP1 civil drawings. Please provide referenced drawings for EP1, if available. EP1 Civil Drawings attached Attachment #4

91 EP2-26-MH-104

through MH-106

Temporary conditioning note 8.d on MH-104 through MH-106 references bi-weekly IAQ walks to review for mold growth.

Please confirm if bi-weekly is twice per week or once every two weeks.

Twice a month is a prudent inspection schedule. However, If a water intrusion event were to occur, there should be an immediate response.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

EP2-26-FD201

The fire demolition drawings FD201 through FD229 show areas for sprinkler systems to be demolished leaving the areas without fire sprinkler protection. Please confirm if new temporary or permanent fire sprinkler systems will be required for these locations.

Confirmed.

Temporary sprinkler will not be required during the interim period. Temporary fire detection/alarm must be in-place and operational prior to sprinkler system being out of service.

Sprinkler system will be replaced during the next phase of the project in 2026.

Please note, staging/storage of combustible materials will be strictly prohibited in all areas without active sprinkler systems.

Please refer to Spec Section 013525 for additional information.

EP2-26-FD222

General note 3 on fire sprinkler demolition sheets EP2-26-FD218 through 229 reference a standpipe adjacent to Stair 4 to remain operational throughout construction, but the standpipe is not located on the plans. Please confirm the location of the standpipe.

General note on sheets EP2-26-FD218 through 229 is applicable. The standpipe is located in the North side of Stair #4.

EP2-26-FD001

Fire Sprinkler Demolition General Note 3 on sheet EP2-FD001 states that all work must be compliant with 2021 Smithsonian Design Standards. Section 21.2.6 of the 2021 Design Standards requires compliance with the SI Safety Manual Chapter 36, and Chapter 36 "work without interruption" for repairs and work on existing water based fire suppression systems based on Attachment 3 of Chapter 36 - Fire Protection. Please confirm that temporary standpipes providing construction coverage allow for the demolition of the existing fire sprinkler system so that the work without interruption requirement does not apply.

Confirmed. Please refer to Spec Section 013525 and EP2 FX drawings.

Attachment #7

EP2-26-FD221

General note 2 on EP2-26-FD221 through 229 states that locations with hard or inaccessible ceilings could not be investigated but that contractor is responsible for demolition of the equipment in all work areas. For sprinkler piping running through existing walls and slabs to remain, please confirm that piping may be cut to leave an existing sleeve through the wall/floor.

No, existing piping to be demolished may not be cut and left in place as a sleeve through the wall or floor. There may be locations where the existing penetrations will be re-used for new piping. Remove as noted.

Category Page Number Question Response Attachment

333302-24RF-0010021 Revitalize Historic Core, Early Package 2-26 project

REQUEST FOR INFORMATION

EP2-26-MP-140

Detail 1/EP2-26-MP-140 shows new steam supply and condensate pipe connections to be made in the basement of the

AIB.

1. Please confirm if the AIB is to remain occupied while this work occurs.

2. Please confirm if temporary conditioning for the AIB is required while the steam piping not operation.

3. Please confirm if GC is to include sawcut and demolition of existing slab

4. Please confirm if GC is to include pourback of the final slab.

1. AIB may be used for special events during construction period and will be prepared for occupancy that will begin in spring 2026.

2. Confirmed. Temporary conditioning shall be provided during steam piping outages to maintain current building conditioning. Outages (duration and timeline) should be planned ahead of time with SI.

3. Confirmed. Sawcut and demolition of existing slab is required. See keynote 1004 on structural sheet EP2-26-S140 for structural scope associated with the steam piping.

4. Confirmed, pourback of the final slab is required. See keynote 1004 on structural sheet EP2-26-S140 for structural scope associated with the trenching.

EP2-26-PD118

General note 1 on EPs-26-PD118 calls for existing plumbing fixture faucets and flush valves to be inspected and repaired in room R149, R150, R159, and R160 as part of the scope of work. This inspection would occur post bid. For bidding purposes, should the GC exclude repairs to existing faucets and flush valves?

Contractor shall assume an allowance of 30% repair/replacement of internal parts, faucet cartridges, diaphragms and trim.

Total existing quantities: 14 Lavatories, 14 Water Closets & 8 Urinals. At the completion of EP-26 work, all faucets and flush valves are expected to be in working order.

EP2-26-TD-104, 105,

Sheet note 5 on EP2-26-TD-104, 105, and 106 calls for demolition of telecommunications, security, AV devices/components, and associated cabling in areas demolished under the architectural plans. The drawings do not show/indicate what is existing in these spaces.

1) Please provide routing/locations of existing equipment/cabling.

2) This note does not call for demo of existing overhead conduit. Please confirm if overhead conduit exists, and if it is required to be demolished.

Routing/locations of existing telecom, security and AV infrastructure hidden behind finishes is not known.

Overhead conduit, as well as all other existing telecom, security and AV infrastructure shall be removed in the indicated areas and per the sheet notes on EP2-26-TD-104 through 106. Also note requirements in specification section 01 0000, including but not limited to, 57.1 and 57.2.

EP2-26-TD-104, 105,

Sheet note 10 on EP2-26-TD-104, 105, and 106 calls for demo of smaller conduit located behind all walls. The drawings do not show/indicate what is existing behind walls.