FA486110RA200_NELLIS_MACC_RFI 35 to 54_20 AUG 10.docx

RFI #35

A Schedule of Values is required to be included in the Technical Proposal. Does the Air Force have a standard form for this? It was not provided in attachment #17.

Answer:

The Air Force has no standard form for this item nor does it have a preferred submission format.

RFI #36

Will base supply mechanical drawings of existing air moving equipment for purpose of air balancing?

Answer:

No, our mechanical drawings are not current and will need the contractor to balance the existing room and not affect the rest of the facility.

RFI #37

Will entire building need to be air balanced.( multi zone unit)

See response to RFI #36

RFI #38

Demolition of existing duct work not mentioned in scope of work. To what point is it to be removed?

The existing duct work will be left in place and will only need man bars and inspection port install between the different SCIF zones, IAW JAFAN 6/9.

RFI #39

How is the existing Johnson controls in the area to be handled, removed, etc. to provide standalone operation of each room? Does the stand alone statement refer only to the mini split units?

Johnson Controls will remain on the existing systems. All of the new split systems will not be on Johnson Controls.

RFI #40

Are the condensate drains to be piped separate or tied together. How many outside penetrations?

Each systems should be piped separately. The reason for this is not to allow one system to drain into one another.

RFI #41

Can you provide a sequence of operation for the HVAC. How is the existing duct work to work with the mini splits. Are the mini splits back up and supplemental or intended for the main source of cooling and heating?

The mini split system are to be use as primary air cooling for each room. The hallway will be the main area the existing system will need to keep and the existing system will serve as a back-up for each room.

RFI #42

Outside air for mini splits. Outside air is now being supplied by existing equipment? I know of no way to tie outside air directly to mini split air handler. Could an Energy Recovery Ventalator be used for this purpose ducted into each room?

Answer:

The Government is unsure if it understands this question. The Split system, ductless units does not need outside fresh air to work cool the inside temperature. The condensing units that provide the refrigerant to the system, needs to have a min of 2 feet of air space in front and back of the unit for keeping the fins cool.

RFI #43

The Nellis AFB Asbestos and Lead Based Paint Inspection Report, dated 8/19/2009 states “Vincent Bowers of the CES/CEOSM informed Macrotec that there is an asbestos containing wall encased with newer sheet rock mud and tape between rooms 2 and 3”. What asbestos containing materials are encapsulated by the newer sheet rock? For example; insulation, sheet rock, mud, tape?

Answer:

That is correct. There is a wall that has Asbestos and is encapsulated. This project does not have any wall demo in that area.

RFI #44

This is to inform you that we will be using NAVFAC standard drawing format, approved symbols, and Supported EDD standard components as discribed in the UFC Design Procedures section 7-3.2.2.1, 7-3.2.2.5, and 7-3.7.

Answer:

The Government does not require correspondence informing it that a prospective offeror is intending to comply with solicitation requirements prior to receipt of offers.

RFI #45

Will Johnson controls be required to contro lthe new split system units?

Answer:

Johnson Controls not required to be install on the new Split systems. Each room will have their own remote control and thermostat.

RFI #46

If Johnson Control are required my HVAC subcontractor will provide bacnet capabilities on the ductless split systems for Johnson Controls to take control over. Is this correct?

Answer:

See answer to RFI #45

RFI #47

We will be using the 2009 IMC for ventilation requirements. Is that ok?

Answer:

The 2009 IMC is current and acceptable to follow.

RFI #48

What is a VTC and how much heat is generated by them?

Answer:

VTC is Video Tele Conference. This is for being able to use a projector and computer with VGA connection.

RFI #49

We will plan on putting an extra ductless split system in the VTC room. Correct?

Answer:

The extra ductless is split system is acceptable.

RFI #50

Do we have any humidity requirements in the Comm and UPS room?

Answer:

There are no humidity requirements in the communication and UPS room.

RFI #51

Will the Government be purchasing the Advantor alarm panel? We will install the panel but Advantor will not sell the panel to us. If I remember correctly CE purchases the panel and hands over to the contractor for installation.

Answer:

The government will not be purchasing the Advantor panels. Contractor will need to contact Advantor.

RFI #52

The DCID 6/9 standards require the ceiling to be enveloped with 2 layers of drywall. Will that be necessary on this project since the ceiling structure is solid concrete?

Answer:

The ceiling does not have to be layered with double layer 5/8" sheetrock due to the ceiling is concrete and each of the rooms will have drop ceilings with R-30 insulation on top of the drop ceiling. The solicitation as amended requires use of JAFAN 6/9.

RFI #53

In the past we’ve constructed sciffs walls with 5/8” drywall double layered each side. In the Construction requirements attachment in the solicitation there is a cut sheet for quiet rock 530 which calls for 1 layer 5/8” both sides to achieve the STC 55 requirement. Will the 5/8” Quiet rock 530 1 layer each side be acceptable? Construction Requirements and Finish Plan Keynotes are stating conflicting information.

Answer:

The exterior walls of the basement of the Bldg 620 are at least 8" thick. The only walls that will need to be double layer are the hallway and the new walls in between the rooms.

RFI #54

Demonstration Statement of work states 26 oz 18”x18” vinyl backed antistatic carpet squares and the Demonstration Finish Plan Keynotes says 2’x2’ 20 or 26oz carpet squares. Please clarify which size and type will be used.

The carpet squares 2' x 2' and needs to be 26oz.