Questions and Responses to SB1341.doc

Questions and Responses to SB1341-10-RP-0047 HVAC Upgrades

Through June 1, 2010

(1) On the details for various air handler units, the units are labeled as being a type A,B,C,D,etc. What do these types mean?

(NIST Response) The ‘type’ is for reference when all details were on a general detail sheet. For this project it has no significance.

(2) Does section 15725 titled "Modular Central Station Air Handler Units" pertain to all AHU's in this contract?

(NIST Response) Section 15725 does not pertain to all ACU’s. It applies to smaller units where casings are being replaced and the unit models are identified on the plans and notes.

(3) The schedule for the coils state that most units are 100% outside air, but the air handler details have a return duct. Which system design will be used?

(NIST Response) The coils are sized to match original capacity of 100% outside air but normal operation has minimum outside air and return air set points which are to be field verified before start of construction.

(4) If there is to be asbestos found who will be executing the removal of it?

(NIST Response) NIST is responsible to remove the asbestos.

(5) In the solicitation section L Volume III (c) states, The offeror shall submit price of each AHU and DDC system and summarize price of AHU and DDC system per each building separately. Does this statement mean that NIST is requesting a breakdown of each AHU or each building?

(NIST Response) contractor is to submit a cost proposal as described in solicitation L Volume III (c). The CLIN is to list the offeror’s total price for all work related to the requirements of that CLIN. The NIST expects the offeror to provide sufficient backup detail to determine the how the offeror arrived at the price for each CLIN. The AIA breakout will probably require the identification of the AHU and DDC requirements separately.

(6) In the specifications page 01000-1 Part 1 General 1.3 (a) states, All materials must be stored in the lay down area. Will there be any designated area for storage of equipment and material? If not, will payment be made on received equipment and material stored off site?

(NIST Response) The contractor is allowed one “C” container in the proposed contractors parking and staging area west of building 304. The contractor cannot disturb more than 5 AHUs at a time during the construction period. The contractor is responsible for the offsite storage material. The forklift and loading carts can be stored at the NIST site. The contractor is responsible for offsite storage material and equipment.

(7) In the Solicitation line item 0002 labeled BASE CONTRACT, is building 202 included in the total base contract, or is building 202 a separate line item from the total?

(NIST Response): Building 202 is actually CLIN 0002. The header data concerning the Base contract is provided for informational purposes. The Base Contract requirements include CLIN 0001 through CLIN 0010.

(8) Is there a preferred binder size for the proposals, and if so what size?

(NIST Response): There is no preferred Binder size.

(9) Are subcontractors required to submit a safety plan for their work or is the prime contractor responsible for submitting a master safety plan for all contractors involved in the execution of this project?

(NIST Response) The subcontractor(s) is to submit safety plan for their work to prime contractor for NIST review and approval.

(10) The specifications for the Modular AHU's call for service lights in the AHU's. Do the existing units have light in them already? If not, where will electric be accessed from?

(NIST Response) All existing field erected AHU’s have service lights which remain. New modular units do not require service lights.

(11) On the detail drawings for all AHU's filter sections there is a note #12 at the filter section. There is not a note #12. Is there any work to be done on the filter sections like the replacement of frames or filters or both?

(NIST Response): Delete note #12 which is in the plan detail. Note was replaced by Drawing Note #3.

(12) In Section L Volume III (c) is there a particular AIA/CSI form for the cost breakout?

(NIST Response): NIST does not require the offeror to purchase the AIA forms. NIST requires that the format used by each offeror follow the AIA format for pricing details and totals.

(13) The specification section 15761 calls out… F. Fins: Copper, minimum 0.010 inch thick.

I. 7. Coating: Cathodic epoxy e-coat.

USA Coil and Air, the basis of design for the cooling coils, can provide one of the following choices.

0.010 Aluminum Fin with or without coating.

0.060 Copper Fin with or without coating.

The specified 0.010 Copper Fin is not available.

Typically we see the need for Aluminum coils with a coating OR copper fins without a coating. Please let us know what is actually required.

(NIST RESPONSE)Paragraph 2.1. F should read “Fins: Aluminum, minimum 0.010 inch thick.” to match existing coils. Paragraph 2.1.I.7 should be deleted. Special coatings are not required. Paragraph 2.2. F should read “Fins Aluminum, minimum 0.010 inch thick.” to match existing coils.

(14) In reviewing section L.7 1352.215-70, NIST describes what is to be included in the technical proposal. Volume 1 which includes the proposal cost form, reps and certifications etc.. Volume II is the technical proposal and Volume III. What forms is NIST looking for the contractors to submit with their bids?

(NIST RESPONSE: Volume I is for the reps and certifications, the SF1442 and the SF30s, and all other non price business items; Volume II is the Technical Proposal(no business and no cost information); Volume III is strictly the price data and all the AIA formatted backup data.