IFB_80MSFC18B0003,_Amendment_3.pdf

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 items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT 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.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

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

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

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11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

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

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

PAGE OF PAGES

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8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

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Previous edition unusable

000003

Brian A. Speer, Contract Specialist

The purpose of this amendment to IFB 80MSFC18B0003, Central Steam Distribution Replacement Phase 2, is to make revisions to the solicitation.

Amendment 3 continued on the following pages.

NASA, George C. Marshall Space Flight Center Office of Procurement Building 4260, Room 145,Attn: PS32 / Brian A. Speer Huntsville, AL 35812

NASA, George C. Marshall Space Flight Center Office of Procurement Building 4260, Room 145, Attn: PS32 / Brian A. Speer Huntsville, AL 35812

4200666560

80MSFC18B0003

1 2

08/02/2018

06/08/2018

8/02/2018

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

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

Sponsored by GSA FAR (48 CFR) 53.110

The purpose of this amendment to IFB 80MSFC18B0003, Central Steam Distribution Replacement Phase 2, is to make revisions to the solicitation.

The following changes are made to IFB 80MSFC18B0003:

1. Bid Instructions. There are two revisions to the Bid Instructions:

A. The EMR Instructions at Item 3. are deleted and replaced with the following: “All prime contractors submitting a bid must have an Experience Modification Rating (EMR) of 1.0 or less. The EMR rating shall be submitted with the bid and must be provided by the insurance provider on company letterhead.”

B. The following information about retainage is added under Item 6.: “A 10% retainage is required on contractor invoices as permitted by FAR 52.232-5, Payments under Fixed-Price Construction Contracts. FAR 52.232-5 is located in Section I of this solicitation and is incorporated by reference.” This notice about retainage on contractor invoices is not a change to the solicitation, only a clarification.

2. Revise Plans for FAC-5071. “Plans, FAC-5071, 80MSFC18B0003” are now out of date and should be disregarded; they are replaced with “Revised Plans, FAC-5071, 80MSFC18B0003.” This document is now included as part of the solicitation package and has been uploaded to FedBizOpps (https://www.fbo.gov/).

3. Answers to Contractor Questions. Answers are provided to the questions received by the Government. Attached is a file entitled “Answers to Contractor Questions.”

4. Army and NASA Site Access Control Boundaries Map.

The “Army and NASA Site Access Control Boundaries Map” is now included as part of the solicitation package and has been uploaded to FedBizOpps (https://www.fbo.gov/).

As a result of this amendment, the hour and date for bids are not extended. Bids are still due on Tuesday, August 14, 2018, at 2:00 P.M. CST at NASA, Marshall Space Flight Center, Building 4260, Room 157.

IFB 80MSFC18B0003, Amendment 3 Page 2 of 2

IFB 80MSFC18B0003: Answers to Contractor Questions

Question No. Question Response 1 In Building 4600, can the elevators be used in the course of performing the work in the “Penthouse”?

Yes, but contractors shall maintain the cleanliness of the elevators while in use for performing work.

2 Is the contractor to design and build the new Building 4607A? If so, what are the parameters or requirements for the dimensions of this new building?

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

3 There are a few missing prints; see list below. Will you provide them?

FAC-I-4601-MD1

FAC-HV-4705-UD16

FAC-AL-4727-C1

FAC-AL-4776-U3

FAC-AA-4777-C1

FAC-AA-4777-A1

FAC-AA-4777-MD1

FAC-AA-4777-M1

Missing drawings have been included.

4 As per direction in the Special Conditions, Section 01-05-90, I am requesting the Army and NASA site access control boundaries map. Building 4464 is very explicit regarding the possible presence of Chemical Weapons Materials (CWM) residuals. An extensive amount of trenching and/ or boring is required in this area. We are curious as to how concise the aforesaid map is, and if it will be beneficial in identifying this and other areas of concern.

The Army and NASA Site Access Control Boundaries Map is now included as part of the solicitation package and has been uploaded to FedBizOpps (https://www.fbo.gov/).

5 Does the owner want these items below in all the buildings?

Manufacture recommended equipment & chemicals in a wall mounting cabinet for pH test; TSS, Inhibitor; Chloride, alkalinity, and hardness; sulfite and testable polymer tests for high pressure boilers and oxidizing biocide test for open cooling tower systems.

The equipment and chemicals/ wall mounted cabinet are not required for installation on this project in relation to equipment that requires chemical treatment.

6 Building 4312: Does this building need a chemical feeder and treatment for the chill loop?

Not required.

7 Building 4485: Does this building need a chemical feeder and treatment for the chill loop?

Not required.

8 Building 4491: Does this building need a chemical feeder and treatment for the chill loop?

Not required.

9 Building 4493: Does this building need a chemical feeder and treatment for the chill loop?

Not required

10 Building 4705: Will this building have 1 or 2 hot loops? 2 hot loops.

11 Building 4735: Will this building have 1 or 2 hot loops? 2 hot loops. 4735-BLR0001 and 4735-BLR0002 feed the hydronic heating system at 4732. 4735-BLR0003 feeds the wind tunnel hot water system. See FAC-G-4735-M1-M4 for details.

12 Is there a reason each hot loop needs two chemical feeders? Yes. Bid per plans and specs.

13 FAC-NU-CF-GU2 - Referencing SK: BTU4 - The SK is not referenced on the U drawing and some building drawings do not have details for the BTU meter, is this SK to be referenced for all BTU meters? Since these BTU meters are 24VAC is a dedicated power supply prefered for BTU meter or are the BTU meters prefered to be 120VAC?

Yes, this SK is to be referenced for all BTU meters. BTU meters are shown U sheet floor plans and called out in notes for all buildings to receive a meter. 24VAC shall be supplied from the UCS panel 24V power supply.

14 FAC-NU-CF-GUx - SK: TRTD3 is not shown, please provide.

Use Minco AS5140PD(xx)Y1A1N211S2.

15 Specifications and contract drawings are missing for Additive Alternate I, please provide.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

16 Requesting an extension to the date in which the bid and submittal of pre-bid questions are due because of the complexity of this project, amount of questions/concerns/errors in the design package, amount of missing contact drawings, and all of the specifications/contract drawings for Additive Alternate I that are missing.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

17 Specification section 23 36 00 2.3 H 1 - "Damper actuator:

24V, powered closed, spring return open." this is descriptive of a two position floating actuator, normally a modulating fail-in-place actuator is used for this application. Please update specification to reflect a modulating failin-place actuator.

Bid per plans and specs.

18 Specification section 23 36 00 - Did not see any mention of a local disconnect or low voltage transformer. Should these items be provided and installed by the VAV manufacture?

Yes.

19 Referencing the boiler isolation valves throughout the project will have a line voltage of 120VAC but there is no electrical circuit shown on the "E" drawings. Will the power source for the isolation valve be from the same circuit as the associated boiler? Does it need to be before or after the "BPO" buttons?

The schedule calls for the boilers to be provided with isolation valve kits. The kits will be provided with the boilers, the circuit will be on the same circuit as the boiler. The wiring is after the BPO buttons.

20 During the site visit it was noticed some of the components assossiated with the steam stations have a source voltage greater than 24V but is not shown on the "ED" drawings for demolition throughout the project.

Demolish regardless of voltage.

21 FAC-AB-4312-M2 - Bypass valve for the chilled water system is not scheduled and does not have a Sequence of operations. Please provide a control valve schedule for the CHWS bypass valve and sequence of operations. Also this is shown on M2 detail 2 as a 3-way valve, U2 as a modulating valve and the specifications (230900 2.1 C) specifies that all modulating control valves are to be pressure independent and by the same manufacture, Flow Control Industries (Scheduled throughout this project) do not provide 3-way pressure independent valves.

3 way valve to be two position valve with first position open to chilled water pump, second position open to bypass. Select two position valve based on line size and appropriate spec requirements.

22 FAC-AB-4312-xx - No sequence of operation is provided for the chilled water system, please provided sequence of operations.

Drawings revised to include chilled water bypass sequence of operations.

23 FAC-AB-4312-Mx - CHWS pipe sizes are not shown for the location in which the BTU meter is supposed to be installed, please provide pipe sizes.

4 inch. Verify prior to ordering material for construction.

24 FAC-N-4464 -xx - Bypass valve is shown on M5 and U3 but is not scheduled, please provide valve schedule.

The bypass valve has been added to the control valve schedule.

25 FAC-N-4464-xx - Hot water sequence of operations on drawing page M5 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U2 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

26 FAC-X-4483-xx - Drawing page M1 - Unit Heater Schedule shows UH-0023 (No other reference the UH-0023 in FAC-X- 4483-xx drawings) UH-0024 is reference in the M & U drawings. Is there supposed to be a UH-0023 and UH-0024 or is this incorrect naming.

The Unit heater labelled as UH-0023 is incorrectly labelled. It should be labelled as UH-0024. The schedule has been updated on the drawing.

27 FAC-X-4483-xx - Bypass valve is shown on M6 in the sequence of operations and U4 on the card layout but is not scheduled and is not shown on M3, M5 or M7. Please provide valve schedule.

A 45 GPM bypass valve has been added to the control valve schedule on drawings.

28 FAC-X-4483-xx - M2 piping diagram is different than M5 piping diagram, comparing the two drawings the air seperator and HW pump are shown reverse order.

The M5 piping is correct, the separator and expansion will be on the suction side of the pumps. The drawings have been udpated and corrected on M2.

29 FAC-x-4483-xx - Referenceing SK: RELY10 on U5 & FAC- NU-CF-GU3 no part number is provided, please provide part number.

RELY10 is a wiring diagram only and has no associated part number. See FAC-X-4483-E1 electrical keynote 7 for starter/disconnect part number.

30 FAC-x-4483-xx - Hot water sequence of operations on makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U4 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

31 FAC-AG-4485-xx - Hot water sequence of operations on drawing page M5 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U3 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

32 FAC-AG-4485-xx - Bypass valve is shown on M5 in the sequence of operations, M5 flow diagram, and U4 on the card layout but is not scheduled. Please provide valve schedule.

The bypass valve has been added to the control valve schedule.

33 FAC-AO-4491-xx - Cooling Coil Valve schedule on M1 is missing (AH0003 & AH0004)

Air handling coil chilled water valve schedule added to the drawings.

34 FAC-AO-4491-xx - Item 1 - Referencing M6 Detail 1 - appears to be for AH0003 and AH0004 but the controls schematic and sequence of operations do not match the rest of the M and U drawings.

Item 2 - Referencing M6 Detail 5 - the sequence of operations appears to be for AH-3 & AH-4 zone re-heats but the sequence only allows for for the lowest discharge temperature to be 90 DEGF (ADJ).

Item 3 - On U3, 4491-UCS0001, Card-2, no points are shown for AH4 Zone-1, and/or Zone-2 space temperature sensors.

Item 4 - Referencing M6 Detail 1 - control schematic shows an IAQ sensor but is not shown in U drawings for AH-3 or

AH-4.

Item 5 - Referencing M6 Detail 1 - control schematic shows an SPT and RH% this is shown in U drawings for AH-4 but not for AH-3.

Please provide updated control schematic, sequence of operations, and UCS card layout.

Item 1 - The sequence of operations is incorrect and will be replaced with a correct detailing.

Item 2 - The discharge temperature is adjustable.

Item 3 - AH4 is a single zone with 2 reheat coils. Bid per drawings and specs.

4 - IAQ Sensor is not required.

5 - We will coordinate with UCS for AH3 SPT and RH% requirement.

35 FAC-AO-4491-xx - Hot water sequence of operations on makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U3 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

36 FAC-BQ-4493-xx - Cooling coil valve schedule on M1 is missing AH0010 chilled water valve, please provide valve schedule.

A chilled water control valve schedule has been added to the drawings on M1 for 4493-AH0010.

37 FAC-BQ-4493-xx - cooling coil supply temperature sensor is shown on M7 for AH-10 (Tag for AHU appears to be a typo) but is not shown on U4, please add CCSAT to card layout on U4.

Air handler control diagram on M7 updated on the drawings.

38 FAC-BQ-4493-xx - A HWS bypass valves has been shown for several of the other buildings but is not shown for this building. Is a bypass valve needed? If yes, please provide updated flow diagram, sequence of operation, valve schedule, & UCS card layout.

A bypass valve has been added to the drawing for 4493.

39 FAC-G-4602-xx - Bypass valve is shown on M3 & U3 but is not scheduled and no sequence of operations provided, please provide valve schedule and sequence of operataions.

The sequnce of operations for this bypass valve can be found on sheet FAC-L-4607-M1. This bypass valve supports the 4607A Boiler House operation.

40 FAC-Q-4702-xx - Byass valve is shown on U5 & M4 but is not scheduled, please provide valve schedule.

The bypass valve has been added to the control valve schedule.

41 FAC-Q-4702-xx - Is the pipe from the first tee of BLR0001 to the air seperator a 3"? M2 shows 3", air seperator schedule shows 2" and M4 shows 2.5". Ask due to BTU meter flow meter sizing.

The 3" size should be used for all sizes.

42 FAC-Q-4702-xx - Hot Water sequence of operations on drawing page M4 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U5 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

43 FAC-S-4704-xx - Bypass valve is on U2 but is not in the valve schedule, sequence of operations, or pipe diagram.

Please provide updated valve schedule, sequence of operations, and pipe diagram.

The bypass valve has been added to the control valve schedule.

44 FAC-S-4704-xx - Is the pipe from the first tee of BLR0001 to the air seperator a 3"? M2 shows 3", air seperator schedule shows 2" and M4 does not really show. Ask due to BTU meter sizing.

The 3" size should be used for all sizes.

45 FAC-S-4704-xx - The boiler is scheduled at 80 GPM and the exsiting hot water pumps are scheduled for 155 GPM but design drawings do not add VFDs to the exsiting hot water pumps. If VFD are needed please update for electrical information, sequence of operation, and UCS termination details.

The pump schedule has been revised to replace the existing pumps with new pumps. See 4704-M1.

46 FAC-S-4704-xx - Control diagram on M4 shows a Differential pressure sensor but is not shown U drawings, please update UCS termination on card layout. (Please see note regarding hot water pump VFDs).

System is constant volume, DPT not required.

47 FAC-HV-4705-xx - UH-100, -101, -102 Hot water valves are shown in valve schedule on M1 but is not shown on U18 for controls connections to UCS, please provide controls connections to UCS.

Schedule has been revised to show unit heater valves are 2 way, 2 position valves. Valve control shall be interlocked with fan command.

48 FAC-HV-4705-xx - UH-103 is shown on U18 but is not in schedules on M1.

Unit Heater 103 has been added to the plan, schedules and flow diagram.

49 FAC-HV-4705-xx - M23 & M24 - 4705-Coil2401, -2402, - 2403 (one coil is shown but the other two coils are not and don’t know which coil is).

These are separate coils off of unit 24 and are shown on plan view. They have been added to the flow diagram.

50 FAC-HV-4705-xx - UH30, 31,32, 33, 34 is shown on U20, U22, & U23 but is not in unit heater schedule or valve schedule. Is this existing equipmet? If not, please provide schedules for unit heaters and valves.

These are electric unit heaters and the schedule is on sheet M3.

51 FAC-HV-4705-xx - Not in valve schedule - AH12A CHWV & HWV; AH66 CHWV, please provide valve schedule.

Valves were added to the schedules for AH12A. AH66 is existing to remain with no valves changed.

52 FAC-HV-4705-xx - AH38 has a new hot water valve and hot water coil shown in M drawing but is not shown on U18, please provide control terminations to UCS.

AH38 is a cooling only air handler, heating is provided by UH100-UH103. No valve or coil is required and have been removed from the schedules.

53 FAC-HV-4705-xx - Item 1 - M21 references (AH-0012) but the rest of the drawings reference this AHU as AH-12A.

Item 2 - The controls diagrams shows an IAQ sensor and the sequence of operations (#8) states to modulate the outside air damper by the airflow station or by the IAQ sensor (if installed). The IAQ sensor is not shown in the U drawings. Is this sensor supposed to be installed. If yes, please provide controls terminations to UCS card layout and a location for installation.

Item 3 - The controls diagram shows a relief damper, space static sensor, and the sequence of operations (#7) states to modulate the relief air damper to maintain positive space static. The relief air damper and space static sensor is not shown in the U drawings. Please add the relief damper and space static sensor to the UCS Card layout.

Item 4 - The contols diagram shows a SPT/RH% combo sensor and the sequence of operations (#4) "If required, dehumidification shall be based on the humidity setpoint and space humidity.", but the UCS card layout has SK: TRTD2. If this is required please update UCS card layout to include monitoring space RH%.

Item 1: AH012A is the correct number. Items 2-4: The control schematic and sequence of operations has been updated.

54 FAC-HV-4705-xx - Item 1 - On U24 the card layout appear to have incorrect names on 4705-UCS0009, Card-2 it shows points for AH-66 but these are believed to be for AH-69. On U9 the AHU shown as AH66 should be AH-69.

Item 2 - 1. On On U9 The VAVs are named 4705-AH66- VAVxx & (4705-VAV66xx) names appear to be incorrectly named should be 4705-AH69-VAVxx & (4705-VAV69xx).

2.VAV 4705-VAV6908 is not shown in commumication trunk layout on U27 nor floor layout U9.

3. 4705-AH66-VAV03

(U Drawing name) is shown in a different location than on M10 (Also the VAV schedule on M2 appears to have incorrect location for area served.)

4. No SPT locations are shown for AH-69 VAVs in M or U drawings. please provide locations.

Item 1: Correct, these points should be AH69.

Item 2.1: Correct, these should be AH69.

Item 2.2: Correct, U sheets are missing VAV6908.

Item 2.3: M10 locations are correct, U sheets are incorrect.

Item 2.4: Bid a VAV SPT per details, locations will be provided during construction.

55 FAC-HV-4705-xx - A sequence of operation or controls schematic is not shown for 4705-AH0069 which is a multi zone VAV AHU

Sequence of operation and controls schematic are on sheet M22 for new multi-zone AHU.

56 FAC-HV-4705-xx - 1. The control schematic and sequence of operations on M22 shows AH-66 to be controlled with a smart thermostat. This should not be the case please update control schematic and sequence of operations. 2. For the correct AH-66 (see question regaurding AH-66 and AH-69 naming) UCS does not show work releated to the actual AH-

66. Is the programming for the control sequence supposed updated with this project, if so please provide updated sequence of operations.

AH 66 is existing to remain. No work is to be done on AH

66. Sheet M22 is updated with the control information for AH 69 which is a multi-zone VAV system.

57 FAC-HV-4705-xx - A HWS bypass valves has been shown for several of the other buildings but is not shown for this building. Is a bypass valve needed for either or both of the hot water systems for this building? If yes, please provide updated flow diagram, sequence of operation, valve schedule, & UCS card layout.

No, bypass valves are not needed for this building.

58 FAC-CZ-4711 - No valve schedule provided for the bypass valve shown on U1 & U2 and no sequence of operations provided, please provide valve shcedule and sequence of operations for bypase valve. (No mechanical drawing provided.)

The sequence of controls for the bypass valve mentioned on U1 & U2 is located on FAC-D-4714-M4. The bypass is also included on the valve schedule on FAC-D-4714-M1.

59 FAC-S-4714-xx - Bypass Valve - shown on M4, No valve schedule provided and no controls connection to UCS provided, please provide valve schedule and control terminations to UCS. (Possible controls terminations and valve to be located in 4711.)

The physical location of the bypass valve shown on M4 is in the Mezzanine of 4711. See sheet FAC-CZ-4711 U1 & U2.

60 FAC-S-4714-xx - Control diagram on M4 shows a Differential pressure sensor but is not shown U drawings, hot water pumps have VFD, please update UCS termination on card layout.

The DPT is existing in B4711.

61 FAC-S-4714-xx - Hot Water sequence of operations on drawing page M4 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U2 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

62 FAC-J-4715-xx - On M1 the control schematic and sequence of operations shows and outside air damper but this is not shown on U drawings.

The outside air damper shown on the control schematic and sequence doesn't exist. Drawings revised.

63 FAC-AF-4723-xx - Is the BTU meter supposed to be installed in a location to capture energy produced by temperary boiler?

Yes, install BTU meter so that it captures energy produced by primary or temporary boiler.

64 FAC-AF-4723-xx - Should a bypass line with a manual valves be installed to bypass the local boiler for when a temperary boiler is connected and active? The control diagram and flow diagram show two different connections from the temperary boiler connections.

There should not be a bypass line installed for temporary boiler. Disregard the location of the temporary boiler connection on the Boiler Control Diagram, and follow the temporary boiler connection location on the Hot Water Flow Diagram.

65 FAC-AF-4723-xx - 4723-UH0001 is schedule on M1 but is not shown on UCS drawings, please updated UCS card layout.

Provide the following I/O points, field devices, sensor cable and conduit from 4723-UCS0001, card #4 to 4723-UH0001:

4723-UH1-SPT (AI) TRTD2, 4723-UH1-CTL (DI) ISW2,

4723-UH1-CTL (DO) RELY2.

66 FAC-AF-4723-xx - A HWS bypass valves has been shown for several of the other buildings but is not shown for this building. Is a bypass valve needed? If yes, please provide updated flow diagram, sequence of operation, valve schedule, & UCS card layout.

Hot water bypass valve added to the drawings.

67 FAC-AL-4727-xx - Bypass valve is shown on U3 but is not shown M drawings except for in the hot water sequence of operation and bypass valve is not scheduled, please add the bypass valve to the pipe diagrams and valve schedule.

Bypass valve included in drawing heating water control valve schedule.

68 FAC-AL-4727-xx - Is the BTU meter supposed to be installed in a location to capture energy produced by temperary boiler?

Yes, install BTU meter so that it captures energy produced by primary or temporary boiler.

69 FAC-AL-4727-xx - Hot Water sequence of operations on drawing page M5 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U4 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

70 FAC-AL-4727-xx - Drawing page C2 is missing from package.

Missing drawings have been included.

71 FAC-AY-4732-xx - The only drawings for this building is U drawings that show demolition of the steam meter. This is typical of mechanical demolition work, is contract drawings missing for this building, is there any additional demolition or new installation work involved with this building (No new installation work shown in U drawings)?

There is no additional work in this building other than the demolition of the steam meter. Bid per plans and specs.

72 FAC-L-4733-xx - AH0001 - Some control points are shown on M1 as a serial interface to UCS but is shown on the Ux drawing shown as descrete I/O instead of a serial interface connection , verify AH0001 is to be control by descrete I/O.

(And is shown in SoO to be control by BACnet controller through an MS/TP network interface. Chilled water valve is not in valve schedule is it supposed to be two position or modulating? Is the gas heat valve provided to be provided with the air handling unit by the manufacture? Please provide updated valve schedule.

Air handling unit control diagram updated on the drawings.

73 FAC-G-4735-xx - Referencing M4 Is the pipe from the first tee of BLR0001 to the air seperator a 6"? Air seperator schedule shows 4". Ask due to determining BTU meter flow meter size. Also, placement of air seperator on M4 appears to be different than on M2.

The air separator shall be sized for 6" pipe size.

74 FAC-G-4735-xx - Boiler 3 and associated hot water pump does not show any controls connection or field devices on U drawings. Please provide updated U drawings.

Boiler 3 is for process use and under local control. See wind tunnel boiler control diagram on M4 for user control requirements.

75 FAC-G-4735-xx - M drawings do not include a control schematic or sequence of operations for the hot water system associated with 4735-BLR0001 and 4735-BLR0002. Please provide control schematic and sequence of operations.

Shown on sheet M1.

76 FAC-G-4735-xx - BLR0003 is the only boiler for the HWS, M3 detail 10 note 8 states " two-position control valve (if multiple boiler configuration is shown on controls drawings."

but on M4 detail 3 in the control diagram there is (2) two-position control valves are shown. If any isolation valves are required please provide quantity.

No mutiple boiler configuration utilized, 2 position control valve not required.

77 FAC-G-4735-xx - A HWS bypass valves has been shown for several of the other buildings but is not shown for this building for either system. Is a bypass valve needed? If yes, please provide updated flow diagram, sequence of operation, valve schedule, & UCS card layout.

No, bypass valves are not needed for this building.

78 FAC-Q-4747-xx - Hot Water sequence of operations on drawing page M1 (Alarms) states "The UCS shall monitor the makeup water system flow meter and alarm if the flow rate exceeds alarm setpoint", but the specifications (230900 2.1 G

2) specifies a makeup water meter that is a totalizer only type and U2 shows the input point to be a digital input referencing SK: RELY9. Is the flow rate supposed to be monitored and alarmed based per the squence of operations? If so, please specify desired flow meter and modify U drawings. If the flow meter is to be used as a totalizer only please modify sequence of operations to reflect.

Make up water flow rate shall be calculated by UCS programming. The sequence is correct as stated on M5. Bid per plans and specs.

79 FAC-Q-4747-xx - A HWS bypass valves has been shown for several of the other buildings but is not shown for this building. Is a bypass valve needed? If yes, please provide updated flow diagram, sequence of operation, valve schedule, & UCS card layout.

A bypass valve has been added to the drawing for 4747.

80 FAC-Y-4776-xx - Drawing page U3 is missing from package.

Please provide drawing.

Missing drawings have been included.

81 FAC-AA-4777-xx - Drawings C1, A1, MD1, & M1 is missing from package. Please provide drawings.

Missing drawings have been included.

82 The Mechanical Demolition drawing included for Building 4601 is a duplicate of the MD-1 drawing for Building 4600.

Please provide the MD drawing for 4601.

Missing drawings have been included.

83 The General Note on drawings FAC -L-4607-M1 and M2 states that these drawings are for information purposes. Please clarify.

The general note has been revised to remove the "for information only" statement. The purpose of this note is to indicate this work is in support of the 4607A work that is a part of the Heat Recovery System Project that was released with Amendment 1 to IFB 80MSFC80B0003. FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

84 No pump schedule is included for HWP’s in Building 4607A. FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

85 Heat exchangers, thermal energy storage tanks, and cooling towers are referenced in Keynotes on sheet FAC-L-4607-M2;

but none are scheduled or described or shown on flow diagram.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

86 Please provide characteristics for the air separator on the hot water system in Building 4607A.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

87 No underground hot water distribution to the 4600 Complex is found in the drawings. Please provide.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

88 No information is found to describe the type building required for 4607A. Please provide dimensions, elevations, material type, under slab drainage, slab thickness, etc.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

89 Work Coordination Note: FAC-U-4600, FAC-Q-4601, FAC-I- 4602, FAC-J-4607; these drawings are not included in the set.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

90 Please clearly define what part of new Building 4607A is Base Bid and what is Additive Alternate.

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

91 On drawing FAC-AB-4312-M1 the AHU equipment schedule calls for the unit to be provided with a VFD while the VFD for the new chilled water pump is to be provided by electrical (Div 26). Should all VFD’s be provided by electrical to ensure the same manufacturer is used for ease of maintenance and spare parts?

AHU Schedule on FAC-AB-4312-M1 only states that a VFD shall be provided for the fans. Div 26 defines the VFD requirements. Provide VFD per Div 26 requirements.

92 The enlarged New Work Mechanical Rm 115 Plan on drawing FAC-AB-4312-M2 shows a new chilled water system bypass valve to be installed (Note 11). This valve does not show up in the control valve schedule but is included on the UCS drawings. Please provide valve schedule to include fluid characteristics for selection of valve.

The bypass valve has been added to the control valve schedule.

93 Building 4714 drawings M2 & M3, what are the piping sizes for the makeup water which includes the air separator piping and the extension tank piping.

1" lines are required for makeup and the expansion tank piping.

94 Building 4776 is missing drawing FAC-Y-4776-U3. Missing drawings have been included.

95 Building 4777 is missing drawings:

FAC-AA-4777-M1

FAC-AA-4777-MD1

FAC-AA-4777-C1

FAC-AA-4777-A1

Missing drawings have been included.

96 Detail 6/M2 on Drawing No. FAC-L-4733-M2 shows a flow meter in 4733-AH0001 combustion air. Is this correct?

"Combustion Air Wall Termination Detail" on Detail 6 is a typo and is actually a BTU meter detail for the chilled water system.

97 Detail 3/M2 on Drawing No. FAC-L-4733-M2 should be a Cooling Coil Connection detail but is showing a wall louver?

This detail has been renumbered to 7/M2 and the detail name has been changed to Outside Air Louver.

98 DWG FAC-Q-4702-M2, DUCT MOUNTED HOT WATER

COILS 4702-RHC002, 003, AND 004. Drawing Note 4 indicates to provide transitions to mount the new coils. The drawings do not indicate the size of the ductwork where the new heating coils are to be installed. The ductwork is shown on drawing FAC-Q-74702-MD1 but does show any sizes.

Please provide.

The sizes have been added to the drawing as requested.

99 DWG FAC-BQ-4493-M3, “NEW WORK PLAN –

MECHANICAL”. Most of the medium pressure ductwork branch lines are not sized. Please provide sizes.

The sizes have been added to the drawing.

100 The hot water coils do not have an individual tag number on the drawings, but no equipment schedule. Can we assume the hot water coil shown in the VAV schedule matches the hot water coil tag number shown with each VAV?

Hot water coils are associated with VAV boxes and are marked on the M sheets. Hot water coils shall be sized to meet the requirements per the VAV schedule.

101 The tag numbers for the hot water coils shown on the flow sheet FAC-BQ-4493-M9 do not match the tag numbers shown on the drawings. Is it safe to assume the last four digits of the tag number shown on the flow sheet should be matched with the last four numbers of the VAV shown in the contract drawings?

The tag numbers on the floor plan M3 have been changed to match the VAV designation, the schedule and the flow diagram.

102 DWG M1 HWP tag numbers do not match the tag numbers on the plan view FAC-A0-4491-M4.

Hot water pumps changed to 4491-HWP0001 and 4491- HWP0002 on drawings.

103 Regarding Building 4777, drawings UD1, UD2, U1, U2 & U3 were duplicated and drawings C1, A1, MD1 & M1 were missing.

Missing drawings have been included.

104 Drawing 4727-C1 is missing. Missing drawings have been included.

105 Electrical Testing Section 260501 1.3 D. Will the electrical contractor be required to provide a short-circuit analysis and coordination study for only the new equipment being provided? If so will the owner provide existing analysis and study information. If no there is not an existing short-circuit analysis and coordination study will the electrical contractor be required to provide one for all existing equipment?

Contractor will be responsible for providing short-circuit analysis and coordination study for new equipment installed, or where existing equipment has been modified (e.g., where existing panelboards have new circuits installed). The government will provide short-circuit analysis and coordination study data for pre-modified system(s). Where no previous data exists, the government will waive requirement on a case-by-case basis.

106 DWG No. FAC-AL-4727-E1 Panel 4727-RP004 and disconnect 4727-SS003 appear bold with no (E) designation as being existing. Are these new or existing items?

4727-RP0004 and 4727-SS0003 are existing items, located where shown in the drawing package.

107 DWG No. FAC-G-4735-E1 4735-STRT0003 appears bold.

What is the intent of the bold starter?

Ignore bolding of item - appears to be an editorial/clerical error during drawing creation.

108 DWG No. FAC-AG-4485-E2 Panel Schedule PP0002 shows feeding 4485-STRT0016 with a 20/3P breakers. New one-line diagram same page shows a 30A breaker. Please advise correct breakers size.

Breaker size should be 30A/3P. When submitting panel schedule for review, show this circuit with the correct breaker size (30A/3P).

109 DWG No. FAC-BQ-4493-E3 Panel Schedule 4493-RP0001 Indicated this is a “New” panel. The floor plan DWG No.

FAC-BQ-4493-E1 indicates panel 4493-RP0001 is existing.

Please advise direction on replacing the existing panel or adding one 40/2P and one 20A/1P breakers to existing panel.

Panelboard 4493-RP0001 is existing, but is to be replaced as part of this work effort per the asterisk note provided below the panel schedule on Sheet FAC-BQ-4493-E3. Also as part of this work effort, the 40A/2P and 20A/1P breakers and circuits are to be added to the new panel.

110 DWG No. FAC-BQ-4493-E2 one line shows demo of existing 4493-CBS0001 30A and upgrading the circuit to a 60A 3P. Please confirm that 4493-CBS0001 is rated for 60A.

If not do we need to supply and install a 60A enclosed circuit breaker.

Existing Enclosed CB shown to be demolished is rated for 30A. Contractor shall provide new 60A enclosed CB downstream of new 60A circuit breaker in panelboard 4493-

PP0003.

111 DWG No. FAC-G-4602-E2 Please provide additional information on existing 4602-SWBD0001 for compatibility of new breakers required.

4602-SWBD0001 is a Square D QED Type TIPO Power Style (R) Switchboard. Section 1 is the input section. Section 2 has a 2500A Maximum Suppy Rating with a 2500A Maximum Section Rating. Section 3 has a 2500A Maximum Supply Rating with a 2000A Maximum Section Rating.

112 Will the mechanical contractor supply the natural gas meters?

Looks like electrical has only the power supply to the natural gas meters.

Bid per plans and specs. Coordinate with the general contractor.

113 This is a list of missing prints not included in the Plans, 80MSFC18B0003.pdf file that was downloaded from the FBO website.

FAC-I-4601-MD1

FAC-HV-4705-UD16

FAC-AL-4727-C1

FAC-AL-4776-U3

FAC-AA-4777-C1

FAC-AA-4777-A1

FAC-AA-4777-MD1

FAC-AA-4777-M1

Missing drawings have been included.

114 With regard to the plot plan, is there a proposed area for office facilities? If so, where?

Will be coordinated after contract award.

115 With regard to the plot plan, where is the proposed area for warehousing, laydown yard, storage containers, and fabrication area? Close proximity to the 4600 Complex would be advantageous.

Will be coordinated after contract award.

116 Will access to the facility be strictly through gate 9? Section number 01-05-90 Part 1.6 references Gate 1 and Gate 10 as alternate entry points. Please confirm.

Will be coordinated after contract award.

117 The drawing index is concise with the drawings issued yet various footer headings on multiple building drawings call out more drawings in a series than were submitted in the packages. i.e.: Building 4600 references four (4) UD drawings, whereas the index and package only has two. This is evident throughout multiple building drawings. Please advise.

Reference drawing package index sheets for total numbers of drawings as it is correct.

118 Building 4735 package has actual photo attached showing piping system to be demolished. This is the only package encountered with such a photo. Any and all photos would be beneficial as we were only granted access to certain buildings to obtain photos of our own. Are there more photos available through MSFC?

No.

119 Section number 01 05 90 Parts 1.4 and 1.5 state that the contractor shall provide UXO and CWM Services. Are these services required full time on an ongoing basis or only upon commencement of construction activities in suspect areas?

These two sections are ambiguous as to the scope and responsibility of the contractor with regards to maintaining response personnel on site. Please clarify.

UXO and CWM services are only required as needed.

120 The Drawings and other information concerning Building 4464 specifically call it out as a CERCLA location and that the potential for encountering CWM and CWA. There is approximately 1350 feet of trenching and excavation in this area for the tie-in and installation of gas lines to Building 4464. As a prospective contractor, we have grave concern over our potential liability and scope of responsibility in this area with regards to CERCLA and with respect to CWM identification and remediation.

Bid per plans and specs.

121 What are the underground HWS (Hot Water Supply) and HWR (Hot Water Return) insulation type and requirements?

Refer to drawing FAC-NR-CF-C3. No schedule is provided with regards to underground piping insulation.

See Amendment 1 to IFB 80MSFC18B0003 for underground hot water installation.

122 What are the paint specifications for HWS and HWR above ground?

Painting with a corrosion resistant metal primer is necessary for field welds or any location that has had the factory installed coating removed from the pipe prior to insulating.

123 What are the coating requirements for the underground HWS and HWR piping in the 4600 Complex?

FAC-M5066 content can be found in Amendment 1 to IFB

80MSFC18B0003.

124 What are the coating requirements for all underground gas piping in all areas?

Bid per plans and specs.

125 Drawing FAC-L-4607-M2 shows new boilers and boiler piping, whereas drawing FAC-J-4607-M5 shows future boilers. Please clarify if boilers and piping in Building 4607- A are part of this project and thus are to be included in the Bid for this project.

See Amendment 1 to IFB 80MSFC18B0003.

126 On Page 33 16 15 – 6 Section 2.2C, the spec refers only to AWWA for seismic design. In Section 2.2A, the spec allows either API 650 or AWWA D100 for seismic design of the tank. Also, the spec is pretty consistent, except in 2.2C, in allowing either API 650 or AWWA D100. We assume the omission of API 650 in Section 2.2C is an oversight. Please clarify.

Yes. Use either API 650 or AWWA D100 as applicable.

127 Section 2.2D Item 5 describes an FRP diffuser used in chilled water TES tank. The diffuser for the hot tank may be a relatively small diameter using material of construction preferred which is steel plate. We would like the freedom to provide the most practical design. Is a small diameter steel plate okay to use as material of construction in lieu of FRP if our design shows it to be the best option.

128 Section 2.2D Item 8 requires that the diffuser be approved by Factory Mutual. This is rarely if ever done and would be a significant undertaking if even possible. We request this requirement which is from a very old specification be dropped.

Bid per plans and specs. Coordinate with the general contractor.

129 Section 2.2H Item 20 requires all structural shapes to be A36.

A36 structural shapes are very difficult to source because most structural shapes are rolled from A992 (Fy = 50 ksi) material. Please confirm the material requirement of A36 structural shapes is actually A992.

Bid per plans and specs. Coordinate with the general contractor.

130 It appears item 2.2.A.10 is referring to use of SoCool heat transfer fluid for future use. This design requirement should be deleted as this criteria is applicable to chilled water tanks, not hot water tanks.

Bid substituting SoCool with hot water w/ rust inhibitor

SG=0.98

131 2.2.A.10 - - Please confirm fluid specific gravity specified as

1.08 for use with SoCool - - SoCool should not apply for Hot TES storage.

Bid substituting SoCool with hot water w/ rust inhibitor

SG=0.98

132 2.3.A - - 10 degrees Fahrenheit temperature delta is low for hot TES. Section 2.3.C indicates a return temperature of 125 degrees Fahrenheit, which is a reasonable 35 degrees Fahrenheit temperature delta. Please review and confirm recharge and discharge temperatures to be used in the thermal design. Please note current tank dimensions are not adequate for a 10 degrees Fahrenheit temperature delta.

133 2.4.A.15 - - With 160 degree Fahrenheit design temperature, is the enclosed area anticipated to be a platform on top of the roof for personnel protection (so operators do not walk on the roof), or simply an enclosed area with handrail so operators can walk on insulation for access to nozzles?

Bid with enclosed area on insulation to access nozzles.

134 3.4.B.7.b - - Should the cold water be heated to 160 degrees Fahrenheit in lieu of the 118 degrees Fahrenheit specified?

Bid per plans and specs. Coordinate with the general contractor.

135 3.4.B.7.d - - Pressure drop design for tank internals is on the “tank side”, and does not include pressure drop through manual…