Set 02_Q-A_W50S6Y24B0002 Hanger.pdf

SOLICITATION W50S6Y-24-B-0002 Repair Hanger B1001 (MTX)

Set 02 Q&A

3/22/24

1. Reference drawing E-007. What is the manufacture of the exis�ng MSB-480 volt and the MSB-208? These are requiring some new breakers and I would need this info to price them.

A-E Response: The 480V Main Switchboard is manufactured by Square D (QED-2) and the 208V Main Switchboard is manufactured by Square D (QED-2)

2. Reference drawing E-007. Busway feeders for the 150 amp outlets, is this feeder correct?

Seems a bit over sized.

A-E Response: U�lize 2”C., 4#2/0, 1#6G in lieu of what is indicated on E-007. See revised sheet in forthcoming amendment.

3. Reference drawing E-010. Are there any exis�ng bus plugs that would require replacing? If so what are they.

A-E Response: Exis�ng loads connected to busway not called out for demoli�on shall be reconnected. Contractor shall field iden�fy loads and bus plug units serving these loads. Bus plug units for these loads shall be either connected to new bus (if compa�ble with replacement bus duct) or replaced in kind at contractor’s expense.

4. Reference drawing E-011. Out side room 130, there is an outlet with no type or circuit for the FBO outlet, please provide.

A-E Response: Receptacle is not required and will be removed.

5. Reference drawings E-020 & E-021. There are grounding notes on these pages but no grounding shown on the drawings, please advise.

A-E Response: In-floor grounding is shown for exis�ng airplane grounding. These notes are tagged. Addi�onal grounding connec�on back to the main grounding bus are required for the ground buses in room 136. See revised sheets in forthcoming amendment.

6. Reference the T drawings cable trays. Is it the extensions to have two cable trays, one for low voltage and one for security or is low voltage and security using the same cable tray?

A-E Response: Security is not intended to be wired by cable trays (Only wired in conduit except AKP-1/2 as shown on TY-202, but conduit would be accepted for this segment ); refer to T-102, TY-101, TY-102, TY-103, TY-104, T-205, and T-206. Data wiring (low voltage) is intended to be a mixture of cable trays and conduits (see TN-101, TN-102, TN-103, TN-104, T-201, T-202, T-203, and T-204). No wiring security and data in the same raceway will be allowed.

7. Reference civil drawing CU-100, note 17 to add a conduit. This doesn’t show up on drawing

E-007 one line. Please advise.

A-E Response: See E-007 which required 6 conduits between transformer each of the two service transformers and the Switchboard. There are currently 5 conduits routed between these loca�ons. An addi�onal conduit is required for the installa�on.

8. Reference the fire alarm drawing, there isn’t ant fire alarm devices shown in any of the hangers. Is this correct, please advise.

A-E Response: There are exis�ng detec�on and no�fica�on devices in the hangar bays. The fire alarm detec�on and no�fica�on system will not be modified as part of this project scope of work.

9. Is a ligh�ng protec�on system required? None is shown on the drawings. Please advise A-E

Response: Lightning protec�on system is exis�ng to remain.

10. Ref. IF Drawings: It was men�oned at the walk thru that the Govt. would remove equipment in machine Shop Room 127. Please list all rooms that the Govt. will remove furniture/equipment and which rooms (if any) the contractor is to remove furniture/equipment. Is the contractor to remove, store and replace furniture in these rooms? The IF drawings seem to indicate that the furniture is new and provided and installed by the Govt.

A-E Response: Machine shop room 127 equipment is to be moved out by the Government as part of another project prior to construc�on start of this project and is not in the scope of this project. A-E’s understanding is all other rooms’ furnishings and equipment are to be removed, stored and moved back in (if applicable) by the Government. New furniture shown is for coordina�on only and not in this contract.

11. Please describe and explain how we are supposed to perform: DALT and TAB of exis�ng

HVAC equipment above the first floor of Building 1001. Specifica�on sec�on 23 05 93-1.3 indicated we are to perform this work.

A-E Response: Exis�ng ductwork within Secure Room 155 cannot be DALT’d, but can have its total airflow balanced from outside the room to the quan��es specified u�lizing the VAV box damper and the return duct branch damper (Detail C8 on Sheet M-501). New connec�ons to exis�ng chilled and hot water piping can be balanced using the balancing valves specified at each coil (Detail C4 on Sheet M-502).

12. The bid schedule (CLIN) includes “Appliances” Is the contractor Required to Provide any Residen�al Appliances? If so please provide make and model number.

Gov Response: That is standard language statement our HQ requires us to put in Clin descrip�on, Follow plans and Specs for requirements.

13. The Bid Schedule (CLIN 0003) includes “Permits” Is the contractor responsible for any permi�ng requirements on this project? Other than the typical dig permits or outage requests.

Gov Response: That is standard language statement our HQ requires us to put in Clin descrip�on, Follow plans and Specs for requirements.

14. Will the government please clarify the onsite supervision requirements? Superintendent, SSHO, QCM, Project Manager, Submital Clerk, ETC.

Gov Response: As stated in the Pre-Bid, Superintendent, SSHO, QCM, Project Manager.

Minimum 2 onsite at all �mes and QCM and Superintendent cannot be same.

15. Just to confirm as discussed during the site visit. According to Spec Sec�on 01-14-00 Page 1.

This date is not correct. Does the government have a date in mind as to when this sec�on is to be complete?

Gov Response: See response to Q-A set 01, ques�on 02, Phase 2 to be completed March 2025 as also stated in the Pre-Bid mee�ng.

16. During the site visit the work hours discussed were from 0600-1800 hrs Monday through Friday. Please confirm this is correct as the Specifica�ons say in sec�on 01-14-00 Page 2 0700 – 1700 M-F.

Gov Response: This is the Base Normal work hours, for the F35 projects we have excep�on as stated in Pre-bid mee�ng for hours opera�on from 0600-1800 M-F.