Amendment00006 Memphis.pdf

PDF 195 KB Posted Jul 18, 2023

Attached to: Replace AHU6-10 and Hydronic Piping at the Memphis ARTCC located at 3229 Democrat Road, Memphis, TN
Solicitation number: 697DCK-23-R-00484
Issued by: Department of Transportation Federal Aviation Administration New England Region

About this file

Written by GovTribe AI · Dec 21, 2023

This amendment modifies a federal solicitation seeking to replace air handling units and hydronic piping at an air traffic control facility. The Department of Transportation Federal Aviation Administration New England Region is soliciting proposals to replace ten air handling units and associated hydronic piping at the Memphis Air Route Traffic Control Center located at 3229 Democrat Road in Memphis, Tennessee under solicitation number 697DCK-23-R-00484. Offerors should provide pricing to remove the existing units and piping and install new equipment, with responses due by the amended date included in the modification.

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Other files

File	Type	Posted
Amendment0009 697DCK-23-R-00484.pdf	PDF	Jul 26, 2023
amendment0008.pdf	PDF	Jul 25, 2023
amendment7attachment.pdf	PDF	Jul 24, 2023
Amendment 0007697DCK-23-R-00484.pdf	PDF	Jul 24, 2023
Amendment0005Memphis.pdf	PDF	Jul 17, 2023
amendment0004Memphis.pdf	PDF	Jul 10, 2023
030130 - Maintenance of Cast-In-Place Concrete.pdf	PDF	Jun 30, 2023
zme-d-artcc-d104.pdf	PDF	Jun 30, 2023
amendment 0003 697DCK-23-R-00484 (6).pdf	PDF	Jun 30, 2023
Amendment0002.pdf	PDF	Jun 30, 2023
amendment 0001 697DCK-23-R-00484.pdf	PDF	Jun 27, 2023
wagerates.pdf	PDF	Jun 21, 2023
ZME 1800750 Specification Final.pdf	PDF	Jun 21, 2023
RFO697DCK23R00484.pdf	PDF	Jun 21, 2023
ZME-1800750-DRAWING-FINAL.pdf	PDF	Jun 21, 2023

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RFO 697DCK-23-R-00484

Amendment #0006

Question: Due to the impact to the owner and the schedule and additional expense- can 3 or more units be removed and changed out in a phase?

Answer: Due to cooling requirements for the equipment in the room, no more than 2 units maybe offline at any one time. Please See Plan Sheets G002 for sequence of construction and D102 Sheet Note 1

Question: The chilled / heating water piping is called to be removed, can this pipe be abandoned in place and new piping installed prior to shutdown / replacement of AHU?

Answer: No it cannot, there is not enough space in the trench to put additional piping and the trench has to be sealed prior to new pipe installation as part of the sequence of construction

Question: Drawings show piping under the computer room floor but drawings D102 note 3 mentions the piping is in a trench, please clarify or provide pictures?

Answer: The piping is both under the computer floor and in the trench as the raised floor is throughout the entire room. Photos were provide in Amendment 005.

Question: Drawing M 502 indicates a new floor stand and new ductwork for AHU. Can the existing floor stand and ductwork be reused?

Answer: See Plan Sheet D102, Sheet Notes 1 and 11 that those items are to be demolished.

See Plan Sheet M101 Note 1 for installation of new devices and Plan Sheet M502 for New Duct and Floor stand detail.

Question: Please confirm that the only piping to be removed, replaced, if from the tie-in points located on M101 Between column line C-C & G-G @ COL 12 ?

Answer: All piping to be removed/replaced from each AHU to the tie in point mentioned above

Question: Please provide a drawing where temporary piping is to be located ?

Answer: Due to other contracted work at the facility, construction lay-down areas will be determined once the contract has been awarded. No temporary piping is required in either specifications or drawings

Question: The removal and installation of the underfloor piping will require the flooring to be removed for a few weeks. This will impact access to rooms 15a. thru 21a. please advise ?

Answer: The FAA will coordinate with employees in those offices during the work to be completed. Flooring shall be removed as necessary to replace piping per the sequence of construction.

Question: Please clarify as the specification have requirements not shown on plans and that these will not be required, for example chemical treatment and test & balancing of the entire air and water system of the building.

Answer: See Plan Sheet M101 Sheet Notes 4 and 6 for Testing and Balancing requirements for the project. Requirements in the test & balance spec are limited to the existing and new equipment and piping only.

Question: Will Victaulic type joints be allowed and / or Pro-press system for the Piping systems?

Answer: No

697DCK-23-R-00484 amendment6

amendment6questions

File details come from the government source that posted it. Updated Jul 18, 2023.