QA RECOVERY Repair H Wing Electrical RFI Final.doc

RECOVERY Repair H Wing Electrical

Solicitation Number: FA4600-09-B-0007

Agency: Department of the Air Force Office: Air Combat Command Location: 55 CONS Request for Information H-Wing Basement Q. When placing the electrical equipment into the basement, the contractors were shown removable concrete panels at the dock in the courtyard. There also is a motorized chain hoist above these panels. Please verify the rated capacity of the chain hoist and that the chain hoist does work, for this will be the only way to get the electrical equipment to this area.

A. Hoist rating and condition is unknown. The contractor shall assume the hoist does in inoperative and figure another means.

Q. The door going into room BH30A, is not large enough for the new Distribution Switchboard: “BH” to go through, per dimensions given (90" H x 100 W x 48" D) even if broke down. Sub BH is also too large. It looks to me that existing J-Wing 4A and 4B switchgear will need to be relocated and the doorway widened. Please advise.

A. Added general note to drawing sheet 2 of 8 as an amendment for removal of the door jam and reinstall after complete.

Q. Where is “D10A” located? Is this a feeder to be removed?

A. Changed one line diagram on sheet 4 of 8 as part of the amendment for clarification.

Q. At the courtyard dock with removable concrete panels, please give us a drawing of this area, with concrete panel sizes and thickness.

How high is it to the deck from the top side of the removable concrete panels?

How high is it to the deck from ground level?

How high is it from the dock deck to hook at chain hoist?

A. Exact dimensions cannot be determined from as built drawings. The contractor shall field verify dimensions once project is awarded.

2nd Floor

Q. Is the North mechanical room which contains electrical panel “P21” (mislabeled “P2” (?) on the riser diagram) below room EQH6? Placement is not shown.

A. According to B500 Floor Plans the mechanical rooms are stacked.

Q. Is the South mechanical room which contains electrical panels “P22” and P23” below room EQH1? Placement is not shown.

A. yes 3rd Floor

Q. Riser diagram shows existing MCC1 in room 3EQ6. The floor plan shows it in EQC2. Are any of these correct or is it in the North mechanical room EQH6?

A. MCC1 is in north mechanical room EQH6 General

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 H Wing will be through the south 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. Freight elevator is just down the hallway from the Loading dock. It is rated for 4000lbs. Dimensions are roughly 6 ft by 8 ft but should be field verified when project is awarded.

H-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."