QA RECOVERY Repair J Wing Electrical RFI.doc

RECOVERY Repair J Wing Electrical

Solicitation Number: FA4600-09-B-0006

Agency: Department of the Air Force Office: Air Combat Command Location: 55 CONS Request for Information J-Wing

Q. The specifications call for conduits larger than 2” to be in rigid steel conduit. At the Pre-Bid, the existing conduits installed in these areas is EMT including larger than 2”. Can we use EMT?

A. EMT may be used in conduits larger than 2" in diameter except those areas of heavy use and high risk of damage exists and for voltages greater than 600 VAC.

Q. Area BJ, Sheet 2 of 9, “Electrical New Work Keynotes” #1 – Where is transformer TMDA relocating to and what size is the conduit and wiring?

A. Drawing 2 of 9 doesn't show the relocated Transformer 'TMDA'. It will slide into the space vacated by Transformer 'TUP1' removal. The existing 600 amp service will be shortened.

Q. 2J and 3J Distribution Switchboards show loads for UPS 2J and UPS 3J, conduit is not shown on the floor plans for these. Please show where these conduits will terminate.

A. Location shown was added as part of the amendment.

Q. Electrical sheets show dimensions of Distribution Switchboards and Substations. Are any and all doors that these won’t go through, notated somewhere to have the door jam and wall removed and replaced to accommodate equipment placement stated or shown?

A. No door sizes are provided. Access issues will be handled by a general note added by amendment for the contractor to remove and reinstall door jams.

Q. Please advise of the access routes needed to get into the building, and the areas of equipment placement.

A. Access to J Wing will be through the loading dock and then through the freight elevator. Equipment placement is shown on sheet 2 of 9.

Q. Where is the freight elevator located? What’s the weight capacity? What are the dimensions of the elevator?

A. J Wing freight elevator is shown directly across the hallway from the substation. It is rated for 4000lbs. Dimensions are roughly 6 ft by 8 ft but should be field verified when project is awarded.

Q. Note 8 on page 5. It says near motors….some of the motors are air handlers. Are we supplying them? How many motors are we supplying? Pumps? Exhaust fans? Air compressors? Air handling units?

A. The new motors are on the MCC riser diagrams and noted by key note 8 typical. This will apply to all motors shown in bold print. The pieces of equipment varies in type (i.e. Fan motor, compressor, pump).

Q. Where is UDP2 located and what is feeding it? Conduit size? Wire size? And how many wire sets?

A. UDP2 is shown on sheet 6 being feed from UDP1 existing no additional work is required.

Q. What KVA is the transformer that we are temping on page 4? What’s the size of the transformer?

A. 750 kVA, added to amended drawings.