RFI responses Amendment No. 2.pdf

Amendment No. 2 - Upgrade Air Handling Units

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UPGRADE AIR HANDLING UNITS AT CINCINNATI

PROJECT FOR THE

VETERANS AFFAIRS MEDICAL CENTER (VAMC)—CINCINNATI, OH

PROJECT NUMBER: 539-21-104

UPDATED SPECIFICATIONS AND DRAWINGS WITH EXPLANATION OF REVISIONS

QUESTIONS AND ANSWERS (RFIs)

TO INVITATION FOR BID (IFB) NUMBER

36C25021B0059

QUESTIONS AND ANSWERS

1. RFI #1 Question: 10/1/21 – Paragraph 1.7 C states; …. However, the SSHO has be a separate qualified individual from the Prime Contractor’s Superintendent and/or Quality Control Manager with duties only as the SSHO.

Confirming that the VA is wanting the SSHO to a separate person than the Superintendent?

Answer: No. A separate person from the Prime Superintendent is NOT required. A change has been made in specification Section Safety Requirements 01 35 26 for this item.

2. RFI #2 Question: 10/1/21: (continuation of RFI question 1.)

Confirming that the QC can be the superintendent?

Answer: Yes, the CQC Manager can be the superintendent.

3. RFI #3 Question: 10/5/21 - Spec section 2.4, A4 Acoustical Units on page 09-51-00-5 states:

1) Cross Score: 300 be 600 mm (12 by 24 inch) tile to simulate 300 be 300 mm (12 be 12 inch) tile edges.

Please give a specific tile the VA is looking for as a 24 x 24 to simulate 12 x 12 inch tile is hard to find and the one that is available is expensive.

Answer: Paragraph 2.4 Acoustical units has been revised.

“Armstrong #1728” is the basis of design, note: this RFI response is not a sole source, nor a sole source justification.

Special faced units shall be installed at all Housekeeping Accessory Closets (HAC), Food Service A128, and 2nd Floor Logistics acoustical ceilings being replaced.

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4. RFI #4 Question: 10/14/21- What are the flow rates (CFM) for the existing AHU's 1, 2 & 3 to appropriately size the retrofit. Needlepoint Bipolar Ionization?

Answer: Original design CFM for these AHUs is as follows – AHU-1: 57,000 CFM; AHU-2:

40,000 CFM; AHU-3: 40,000 CFM

5. RFI #5 Question: 10/14/21- What are the flowrates (CFM) for the Existing AHU’s 1, 2, and 3 to appropriately size the retrofit Needlepoint Bipolar Ionization?

Answer: Note this question was asked under three separate RFIs. Reference RFI #4 for response.

6. RFI #6 Question: 10/14/21- Will all crane work have to be conducted on the weekends?

Answer: Yes, per “Site Note” on Sheet GI001 Site Map (and North Arrow).

7. RFI #7 Question: 10/14/21- Is there adequate structure on the roofs where the temp units will be located to support them?

Answer: Locations indicated for temporary units are satisfactory for temporary AHU locations.

Locations outside of the designated locations have not been evaluated.

8. RFI #8 Question: 10/14/21- Can the Site super serve as the QC and site Safety?

Answer: Reference RFI responses No. 1 and 2.

9. RFI #9 Question: 10/14/21- Will duct cleaning be required for the duct being Aerosealed? If so, what standard will duck cleaning be required to conducted to?

Answer: Contractor shall follow manufacturer’s recommendations for preparations necessary prior to Aeroseal.

10. RFI #10 Question: 10/14/21- Can more than one unit be changed out at a time?

Answer: Yes, as long as the specified phasing requirements are met for limits on downtime, sequencing of work, etc.

11. RFI #11 Question: 10/14/21 – Will a temporary unit be required for AHU-9-E and AHU9-S?

Answer: Yes, refer to Sheet 1-MT105 for temporary AHU location

12. RFI #12 Question: 10/14/21- Please provide the basis of design for the Temporary AHU’s and

Permanent AHUs.

Answer: Basis of design for permanent AHU-30 is “Ingenia”. Basis of design for all other permanent AHUs is Daikin. Basis of design for both temporary AHUs is York rental by Mobile Air. Note: this RFI response is not a sole source, nor a sole source justification.

13. RFI #13 Question: 10/14/21 - Site Map shows 3 locations for possible crane locations. Can soil borings for these areas be issued to show that existing soils can support the crane / outrigger bearing

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Answer: Soil boring information is not available. Depending on location Contractor is responsible for doing their own soil testing, if necessary. Cranes have been utilized in these areas on past projects. Contractor should coordinate exact crane placement with COR in advance.

14. RFI #14 Question: 10/14/21 - Are there existing utilities / fiber optics in the areas for crane placement?

Answer: Cranes have been utilized in these areas on past projects. Contractor should coordinate exact crane placement with COR in advance.

15. RFI #15 Question: 10/14/21 - Verify that project is taxable on materials?

Answer: A tax exempt form will be provided.

16. RFI #16 Question: 10/14/21 - Provide / confirm the location of proposed GC lay down area on project site.

Answer: Lay down area is unavailable at this time and shall be coordinated with the COR.

Proposed crane locations are to be scheduled with COR and can only be temporarily located.

All materials are to be located off site and are to be coordinated with the COR until further notice. Reference: Page 12 of the Contract, Information Regarding Bidding Material, and Bond.

17. RFI #17 Question: 10/14/21 - Will the VA provide temporary power available for GC use at GC trailer with understanding that GC will be responsible for connection / disconnection.

Answer: If authorized by COR a trailer may be utilized.

18. RFI #18 Question: 10/14/21 - Provide photos of the crane areas to allow for accurate pricing for site restoration.

Answer: Additional photographs will not be provided. All areas are typically asphalt, but main entry (south) location has landscape bed in the middle.

19. RFI #19 Question: 10/14/21 - Provide crawl space vertical height.

Answer: Per original building drawings, crawl space floor-floor height is 7’-6”. Slab thickness and concrete pan/joist structure reduce the working height to less than 7’-6”.

Level OO 81’-6”, Level 0 89’-0”, Level 1 100’-0”, Level 2 111’-11”, Level 3 122’-11”, Level 3b 124’-5”, Level 4 133’-11”, Level 5 146’-6 ¼ ”, Level 6(a) 158’-3 ¼ ”, Level 6 158’-5 ¼ ”, Level 7 169’-5 ¼ ”, Level 8 181’-4 ¼ ”, Level 9 192’- 9” ¾”, Level 10 203’-9 ¾”

20. RFI #20 Question: 10/14/21 - Provide crawl space ceiling construction type.

Answer: There is no ceiling anywhere in the crawl space – exposed concrete pan/joist structure overhead.

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21. RFI #21 Question: 10/14/21 - Provide Site Visit sign in sheet

Answer: Publishing of the site visit sign in sheet is at the discretion of the Contracting Officer.

22. RFI #22 Question: 10/14/21 - Sheet 1-SF501 Provide information showing the areas where new roof support angles are to be installed for accessibility.

Answer: Reference Mechanical drawings for additional information related to the locations of openings.

23. RFI #23 Question: 10/14/21 - Sheet 1-AD150 Coded note 7: provide specification of wall panel infill required including finish and detail of intersection of patch / existing materials

Answer: A detail has been provided on sheet 1-A153.

24. RFI #24 Question: 10/14/21 - Sheet A-A102a Provide weights and information of the existing shelving units to be relocated. Do existing shelf units need to be emptied prior to relocation?

Answer: VA will coordinate the relocation of equipment within this area. A General Note has been added to the drawings to clarify that the VA will be handling relocation of racks within Logistics at each phase.

25. RFI #25 Question: 10/14/21 - Sheet 1-A141 Provide specifications of ceiling tile and ceiling grid to be installed.

Answer: See RFI #3 Response.

What is height to deck above acoustical ceiling elevation.

Answer: It varies by floor and can vary by room. See ceiling heights given on Drawings and RFI Response #19 for floor-to-floor heights.

Provide sprinkler head layout for all rooms to have ceilings removed and reinstalled.

Answer: Reference DRAWING Item No. 4 in this Amendment.

26. RFI #26 Question: 10/14/21 - Sheet 1-A142 Provide specifications of ceiling tile and ceiling grid to be installed.

Answer: Reference RFI #3 response.

What is height to deck above acoustical ceiling elevation.

Answer: Reference RFI #25 responses.

Provide sprinkler head layout for all rooms to have ceilings removed and reinstalled.

Answer: Reference RFI #25 responses.

27. RFI #27 Question: 10/14/21 - Sheet 1-A151 Coded note 1: provide existing drain information including leader pipe size (typ. all locations).

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Answer: Roof Drain Detail on sheet 1-A153 has been revised. Existing roof drains shall remain. Existing roof drain a 12 inch drain.

28. RFI #28 Question: 10/14/21 - Sheet 1-A152 Coded note 4: detail 10/A153 is missing from A153.

Answer: Note 4 has been revised to reference 7/1-A153.

Coded note 6: sheet 1-M104 is not included in set issued.

Answer: Reference to 1-M104 should read 1-M104B

29. RFI #29 Question: 10/14/21 - Sheet 1-A153 Sections 1 & 2: no details of new guard railings not provided.

Answer: Facility Fall Protection System is a gravity set system. Reference Specification 11 24

29 FACILITY FALL PROTECTION.

Provide railing details.

Answer: N/A. Guardrail system is gravity set – no penetrations into the roof.

Are new railings painted?

Answer: N/A. Gray Fiberglas reinforced rails.

Provide railing / roof installation and flashing details.

Answer: N/A. Guardrail system is gravity set – no penetrations into the roof.

Detail 4: provide height of overall parapet construction.

Answer: New parapet framing will be 12” high by 5.5” wide. See revised detail.

Detail 6:

what is RWC clamping ring to anchor into?

Answer: Existing roof drain is to remain. See revised detail.

What is fluid applied self-flashing coating to extend out from?

Answer: See revised detail. Reference to the self-flashing coating has been removed from the project.

30. RFI #30 Question: 10/14/21 - Sheet 1-MD100A Coded note 7: provide details and information of existing trolley showing mfgr name plate and existing mounting details.

Answer: Existing trolley is Coffing Model JLC. Trolley beam is welded to steel angle that is bolted to the existing masonry walls at both ends.

31. RFI #31 Question: 10/14/21 - Sheet 1-MDP102B

Coded note 9: provide existing VAV box mfr information. Note that relocated materials will not have a warranty.

Answer: VAV box to be removed in C224 is Tuttle & Bailey (pneumatic). VAV box to be removed in C211 is Price (DDC). Reference to “relocated” materials in this question is unclear, as these boxes are being removed & replaced per Note 9 – not relocated

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Coded note 12: provide existing unit mfgr information.

Answer: Condensing unit to be removed is Goodman model CE090-3

Coded note 13: provide photo of existing support and roofing for accurate pricing.

Answer: Photo of existing supports & roofing is provided in Attachment 1 to this Amendment.

32. RFI #32 Question: 10/14/21 - Sheet 1-MD104A Coded note 2: provide existing exh. fan information. Note that relocated materials will not have a warranty.

Answer: Existing exhaust fan information is not available. Drawing Note No. 2 calls out the reconnection of exhaust ductwork in new work. No exhaust fans on this sheet are to be relocated.

33. RFI #33 Question: 10/14/21 - Sheet 15-MDT102 Coded note 1: provide existing AHU mfgr specification, weight etc.

Answer: Existing AHU is a Governair custom unit. Submittal was unavailable, so weight is unknown.

34. RFI #34 Question: 10/14/21 - Sheet 1-MT102B

A. Note D: Provide location for Gamma Camera Rm C210.

Answer: Refer to Sheets 1-MH102B & 1-MP102B for location of Room C210. All existing VA equipment/furnishings in this space shall be protected in place during the performance of this work, as specified in the general requirements. Coordinate scheduling of work in this area well in advance with COR.

B. Provide specific requirements for working in this room.

Answer: Same as previous response A in this question.

C. Note E: Provide location for PET/CT Suite C204.

Answer: Same as previous response A in this question.

D. Provide specific requirements for working in this room.

Answer: Same as previous response A in this question.

E. Note H: Provide location of rooms C216H and C216F.

Answer: Same as previous response A in this question.

F. Note I: Provide cooling requirements for Blood Bank Rm C231.

Answer: Based on existing supply airflow, temporary cooling shall be a minimum of 3 tons. It is assumed that temporary cooling units will packaged/unitary, located in the blood bank, with condenser heat discharged to adjacent corridor or existing room exhaust system. Since supply airflow to Blood Bank ceiling diffusers will be eliminated during this work, ceiling return grille in Blood Bank shall be covered/sealed airtight as well, to prevent an extreme negative pressure in the room

G. Provide location of temporary cooling unit.

Answer: Refer to previous response F.

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H. Provide structural column lines to allow for coordination between drawing sheets.

Answer: Coordination between drawing sheets shall be via room names & numbers

35. RFI #35 Question: 10/14/21 - Sheet 1-MT104C Coded note 12: Provide column designation.

Answer: There are no drawing sheets included on this project that show these columns on 3rd floor below. The southern column is in the southeast corner of Room C3038/Northeast corner of Room C3039, and the other column is the next column north, in the north wall of the adjacent corridor on 3rd floor. Successful contractor shall field verify column locations prior to locating temporary AHU

36. RFI #36 Question: 10/14/21 - Sheet 1-MT105 Coded note 1:

Provide unit location on building.

Answer: Refer to KEYPLAN and surrounding rooms on sheet 1-MT105.

What is location of unit above mean grade (Roof height?)

Answer: Roof is approximately 50’ above grade.

37. RFI #37 Question: 10/14/21 - Sheet 1-M100B Coded note 6: provide as built documentation of existing condensate pump piping.

Answer: This existing 1.5” pumped condensate pipe is a straight run of insulated pipe overhead. No additional information will be provided on the drawings.

38. RFI #38 Question: 10/14/21 - Sheet 1-M104B Coded note 15: provide existing materials sizes and weights

Answer: Information related to the satellite dish is unknown.

39. RFI #39 Question: 10/14/21 - Sheet 1-M108 AHU-1 / AHU-2 / AHU-3: Provide specifications for these existing AHU units.

Answer: It is unclear what specifications are being requested. Refer to RFI #4 answer above for existing unit airflows.

40. RFI #40 Question: 10/14/21 - Sheet 1-M109 Coded note 11: provide mounting details for outdoor unit.

Answer: It is unclear what details are being requested. Wall brackets for mini split outdoor units are commonly used and readily available. Existing wall is structural masonry elevator shaft with face brick. Wall bracket used shall be fastened to the structural masonry shaft wall.

41. RFI #41 Question: 10/14/21 - Sheet 1-EP100A

Coded note 6: provide existing wiring sizes.

Answer: Wire size in this 3/4” conduit is not known. Assume wire is #8 AWG which is the largest size that will fit in a ¾” conduit.

Coded note 8:

Provide existing feeder size and wiring.

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Answer: Feeder size serving this temperature control is not known. All conduits originating from this TC panel appear to be 3/4”.

Provide approx. length from BA2 back to source.

Answer: Length from Panel BA2 back to its source should not be relevant to accomplish this work. For length of feeder between Branch panel BA2 and temperature control panel see plan drawing 1-EP100A.

Confirm that existing panel BA2 is to be removed?

Answer: Branch panel BA2 does not get removed. Only the feeder that serves the temperature control panel will be removed back to its source or to the next device on that circuit if applicable, (TC panel to be removed by Division 23). The “BA2” reference on the drawing at coded note 8 is shown only to aid the contractor in tracing that equipment’s power source. See Demolition General Note “J” and General Note “T” on sheet E001. This circuit would typically be a 20A circuit with #12 wire.

42. RFI #42 Question: 10/14/21 - Sheet 1-EP101 Elevation 2 / Existing MSP1: provide existing MSP nameplate / mfgr information.

Answer: In the photo on the sheet, you can see Square D.

43. RFI #43 Question: 10/14/21 - Sheet 1-EP102A Coded notes 15 & 16:

Provide existing wiring information for all existing conduits.

Answer: Exact wiring size information for these (3) 3/4”, (2) 1” and (2) 2” conduits is not available. Assume the largest wire that will fit in the conduit. #8 for ¾”, #6 for 1” conduit and #3/0 for 2” conduit.

Provide photo above existing ceiling showing existing conditions.

Answer: Photograph is not available.

44. RFI #44 Question: 10/14/21 - Sheet 1-EP104A Coded notes 22 & 23: provide existing door opener device information.

Answer: No additional information is available.

45. RFI #45 Question: 10/14/21 - Sheet 1-EP104B Show location of existing lightning protection in relationship of temp AHU (TAH-22).

Answer: Exact location is not defined on drawings. However, existing nearby equipment on this section of roof currently has lightning protection installed. The nearest lightning protection conductor to tap onto is located following the edge of the roof. Extend cable from the equipment to this conductor.

46. RFI #46 Question: 10/14/21 - Sheet 1-EP105 Show location of existing lightning protection in relationship of temp AHU (TAH-9,15).

Answer: Edge of building.

47. RFI #47 Question: 10/14/21 - Sheet 15-ED102 Temp AHU (TAH-30). Is this unit to tie into existing lightning protection system?

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Answer: Temporary air handling unit (TAH-30) will not be tied to LP system

Show location of existing lightning protection in relationship of temp AHU (TAH-30).

Answer: N/A lightning protection is not required.

48. RFI #48 Question: 10/14/21 - Section 02 83 33.13:

Specification does not reflect locations / quantities of materials. Provide information for accurate pricing.

Answer: Information provided in Abatement Report. Review part 1.1 of the specification for what areas are assumed to contain lead.

49. RFI #49 Question: 10/14/21 - Section 07 54 23:

Specification calls for 07 51 13 Cold-Process Built-Up Asphalt Roofing however all drawings (sheets 1-A151, 1-A153 call for 3 Ply Modified Bituminous Roof Systems). Provide clarification.

Answer: Drawings and specifications have been updated to show a Three-Ply Modified Bitumen roof membrane. Specification section 07 51 13 has been deleted from the set and replaced with 07 52 16.11 SPS Modified Bitumen Membrane Roofing. All remaining specifications that reference 07 51 13 can be presumed to instead reference 07 52 16.11.

Provide as built / existing specification for all roofing to areas to be worked on.

Answer: As-builts and product specifications are not available. Existing roof is a cold process built up roofing system with gravel surface.

50. RFI #50 Question: 10/14/21 - Section 09 26 00:

Confirm that veneer plaster is to be utilized within the project.

Answer: There is a potential for some demolition work to impact veneer plaster locations on interior and exterior walls. Specification provided for repair of these locations only.

51. RFI #51 Question: 10/14/21 - Section 09 65 13 and 09 65 16:

Confirm that both Resilient Base and Accessories and Resilient Sheet Flooring are to be utilized within the project?

Answer: There is a potential for some demolition work to impact wall base and sheet flooring locations. Specifications provided for patch and repair of these locations only.

52. RFI #52 Question: 10/14/21 - Section 11 24 29:

Provide basis of design for the Facility Fall Protection system including methods of attachment to existing construction

Answer: “Fibergrate Composite Structures” - ballasted roof system is the Basis of Design.

Note: this RFI response is not a sole source, nor a sole source justification.

53. RFI #53 Question: 10/14/21 - Section 26 41 00:

Provide specification of existing systems.

Answer: This information is unknown.

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Provide location of existing grounding rods.

Answer: This information is unknown.

Provide existing UL certification information.

Answer: This information is unknown.

Clarify extent of lightning protection certifications required.

Answer: See specification section 26 41 00, Part 1.4 (A)

54. RFI #54 Question: 10/14/21 - Section 28 31 00:

Provide existing building fire alarm contractor who maintains existing system.

Answer: See boxed noted on sheet E001 and specification section 28 31 00, Part 1.1(A)

55. RFI #55 Question: 10/14/21 - I am requesting seismic criteria specific to Air Handlers on this project?

Answer: Facility is Category 3. Seismic Category 3 (as the building is Risk Category IV)

Does this project require Seismic Certification?

Answer: AHU manufacturer to determine if Seismic Certification is required.

GENERAL

The following changes, additions, or deletions shall be made to the following documents as indicated, and all other conditions shall remain the same:

1. SPECIFICATIONS

Item Number 1:

DELETE the last sentence in Section SAFETY REQUIREMENTS, Section 01 35 26, Paragraph

1.7 C.

DELETE: “However, the SSHO has (to) be a separate qualified individual from the Prime Contractor’s Superintendent and/or Quality Control Manager with duties only as the SSHO.”

Item Number 2:

Section 09 51 00 ACOUSTICAL CEILINGS: Paragraph 2.4 Acoustical Units, has been revised in its entirety.

Item Number 3:

REVISE the following Sections, to add seismic restraint requirements: 23 05 11 Common Work Results for HVAC, 23 05 41 Noise and Vibration Control for Piping and Equipment, 23 21 13 Hydronic Piping, 23 21 23 Hydronic Pumps, 23 22 13 Steam and Condensate Heating Piping, 23 31 00 HVAC Ducts and Casings, 23 34 00 HVAC Fans, 23 36 00 Air Terminal Units, 23 37 00 Air Outlets and Inlets, 23 72 00 Air-to-Air Energy Recovery Equipment, 23 73 00 Indoor Central-Station

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Air-Handling Units, 23 74 13 Packaged Outdoor Central-Station Air-Handling Units 23 81 43 Air- Source Unitary Heat Pumps, 23 82 00 Convention Heating and Cooling Units.

Item Number 4:

Section 13 05 41 SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS is ADDED to the Contract Documents.

Item Number 5:

Section 07 22 00 ROOF AND DECK INSULATION is ADDED to the Contract Documents.

Section 07 52 16.11 COLD ADHESIVE STYRENE-BUTADIENE-STYRENE MODIFIED BITUMIOUSE MEMBRANE ROOFING is ADDED to the Contract Documents.

Section 07 51 13 COLD-PROCESS BUILT-UP ROOFING has been DELETED from the Contract Documents.

Item Number 6:

The following Specification Sections have been revised to include revisions for Seismic requirements: 26 05 11 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS, 26 05 33

RACEWAYS AND BOXES, 26 22 00 LOW VOLTAGE TRANSFORMERS, 26 24 16

PANELBOARDS, 26 29 11 MOTOR CONTROLERS, 26 29 21 ENCLOSED SWITCHES, 26 51 00

LIGHTING.

2. DRAWINGS

Item Number 7:

Add the following General Note “H” to the following Drawings:

1-A141 REFLECTED CEILING PLANS FIRST FLOOR

1-A142 REFLECTED CEILING PLANS - SECOND FLOOR

1-A142A LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 1

1-A142B LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 2

1-A142C LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 3

1-A143 REFLECTED CEILING PLANS - THIRD FLOOR

1-A145 REFLECTED CEILING PLANS - FIFTH FLOOR

“H. Placement of existing lighting fixtures are included on the architectural RCP sheets for general reference and should not be used for reinstallation locations of the fixtures. Contractor shall document location and orientation of all existing ceiling-mounted devices/equipment including but not limited to lighting fixtures, cameras, occupancy sensors, wi-fi, signage etc. via digital photographs prior to ceiling removal. Photographs shall be taken to include adequate background/context information for accurate device/equipment re-installation, organized on a floor-by-floor and room-by-room basis, and be made available to the COR, engineer, and all trades upon request.”

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Item Number 8:

Drawing Note number 5 is revised to depict the existing roofing material more accurately.

1-AD150 DEMOLITION ROOF PLAN

Item Number 9:

Drawings Notes have been revised to show the VA will relocate the storage racks in each phase on the following drawings.

1-A102A LOGISTICS PHASE 1

1-A102B LOGISTICS PHASE 2

1-A102C LOGISTICS PHASE 3

Item Number 10:

Drawing notes have been revised on the following drawings.

1-A151 ENLARGED ROOF PLANS

1-A152 ENLARGED ROOF PLANS

Item Number 11:

Roof Details have been revised on this sheet. A detail has been added for clarity at the doghouse removal.

1-A153 ROOF DETAILS

Item Number 12:

On Sheet 1-M104C MECHANICAL FOURTH FLOOR DEMOLITION & NEW WORK PLANS, Drawing Notes 31 & 32 were added to clarify limitation on AHU-23 downtime.

Item Number 13:

On Sheet 1-M108 Mechanical Roof plan general Note 2 was added.

Item Number 14:

Sheet M701 Mechanical Controls Diagrams, Control General Notes have been revised.

Item Number 15:

On Sheet EP102B Second Floor Electrical Plan, panel designations for return fan and supply fans have revised for fans associated with Drawing Notes 4 and 5.

Item Number 16:

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On Sheet EP103 Third Floor Electrical Plan Drawing notes 3 and 4 are revised.

Item Number 17:

On Sheet E501 Panel Schedules, Branch Panel EDPEQ3b has been revised.

Item Number 18:

On Sheet E601 Riser Diagrams, Existing Distribution Panel EDPEQ3 has been revised.

Item Number 19:

On Sheet 15-MH102 MECHANICAL SECOND FLOOR NEW WORK PLANS, Drawing Note 15 was added to require calibration of existing duct-mounted airflow measuring stations.

ATTACHMENTS

UPDATED DRAWINGS:

1-AD150 DEMOLITION ROOF PLAN

1-A102A LOGISTICS PHASE 1

1-A102B LOGISTICS PHASE 2

1-A102C LOGISTICS PHASE 3

1-A151 ENLARGED ROOF PLANS

1-A152 ENLARGED ROOF PLANS

1-A153 ROOF DETAILS

1-A141 REFLECTED CEILING PLANS FIRST FLOOR

1-A142 REFLECTED CEILING PLANS - SECOND FLOOR

1-A142A LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 1

1-A142B LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 2

1-A142C LOGISTICS SUITE REFLECTED CEILING PLAN – PHASE 3

1-A143 REFLECTED CEILING PLANS - THIRD FLOOR

1-A145 REFLECTED CEILING PLANS - FIFTH FLOOR

1-M104C MECHANICAL FOURTH FLOOR DEMOLITION & NEW WORK PLANS

1-M108 MECHANICAL ROOF PLAN – AHU 1, 2, 3

1-M701 MECHANICAL CONTROLS DIAGRAMS

15-MH102 MECHANICAL SECOND FLOOR NEW WORK PLANS

E501 – PANEL SCHEDULES

E601 – RISER DIAGRAMS

1-EP102B – SECOND FLOOR ELECTRICAL PLAN

1-EP103 – THIRD FLOOR ELECTRICAL PLAN

UPDATED SPECIFICATIONS:

1. SAFETY REQUIREMENTS Section 01 35 26. Specification re-issued in its entirety for clarity.

2. ACOUSTICAL CEILINGS Section 09 51 00. Specification re-issued in its entirety for clarity.

3. ROOF AND DECK INSULATION Section 07 22 00. Specification is added to the project documents.

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4. COLD ADHESIVE STYRENE-BUTADIENE-STYRENE MODIFIED BITUMINOUS

MEMBRANE ROOFING Section 07 52 16.11. Specification is added to the project documents.

5. COLD-PROCESS BUILT-UP ROOFING Section 07 51 13. Specification has been deleted from the project documents.

6. SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS

Section 13 05 41. Specification is added to the project documents.

7. COMMON WORK RESULTS FOR HVAC Section 23 05 11. Specification re-issued in its entirety for clarity.

8. NOISE AND VIBRATION CONTROL FOR PIPING AND EQUIPMENT Section 23 05

41. Specification re-issued in its entirety for clarity.

9. HYDRONIC Pumps Section 23 21 13. Specification re-issued in its entirety for clarity.

10. HYDRONIC PIPING Section 23 21 23. Specification re-issued in its entirety for clarity.

11. STEAM AND CONDENSATE HEATING PIPING Section 23 22 13. Specification re-issued in its entirety for clarity

12. HVAC DUCTS AND CASINGS Section 23 31 00. Specification re-issued in its entirety for clarity.

13. HVAC FANS Section 23 34 00. Specification re-issued in its entirety for clarity.

14. AIR TERMINAL UNITS Section 23 36 00. Specification re-issued in its entirety for clarity.

15. AIR OUTLETS AND INLETS Section 23 37 00. Specification re-issued in its entirety for clarity.

16. AIR-TO-AIR ENERGY RECOVERY EQUIPMENT Section 23 72 00. Specification re-issued in its entirety for clarity.

17. INDOOR CENTRAL-STATION AIR-HANDLING UNITS Section 23 73 00. Specification re-issued in its entirety for clarity.

18. PACKAGED OUTDOOR CENTRAL-STATION AIR-HANDLING UNITS Section 23 74

13. Specification re-issued in its entirety for clarity.

19. AIR-SOURCE UNITARY HEAT PUMPS Section 23 81 43. Specification re-issued in its entirety for clarity.

20. CONVECTION HEATING AND COOLING UNITS Section 23 82 00. Specification re-issued in its entirety for clarity.

21. DIRECT DIGITAL CONTROL SYSTEMS FOR HVAC Section 23 09 23. Specification re-issued in its entirety for clarity.

22. REQUIREMENTS FOR ELECTRICAL INSTALLATIONS Section 26 05 11. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

23. RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS Section 26 05 33. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

24. LOW-VOLTAGE TRANSFORMERS Section 26 22 00. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

25. PANELBOARDS Section 26 24 16. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

26. MOTOR CONTROLERS Section 26 29 11. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

27. ENCLOSED SWITCHES AND CIRCUIT BREAKERS Section 26 29 21. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

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28. INTERIOR LIGHTING Section 26 51 00. Reference to seismic bracing added back to specification. Specification re-issued in its entirety for clarity.

REFERENCE DOCUMENTS:

1. ABATEMENT REPORT MARCH 10, 2021.

2. LEAD PAINT TESTING REPORT MARCH 10, 2021.

3. Honeywell/Siemens/Johnson Controls sole source justification

4. Photo Attachment response to RFI 31 - Amendment No. 2 2021-1025