Pre-bid_QA_FA4418-16-R-0005_2016-06-17.pdf

Q: Where is specification section 13 48 00? It is mentioned in paragraph 1.2.1 of section 26 05

48.00 but it not part of the specifications.

A: Specification Section 26 05 48.00 was deleted in addendum #2 from the project manual as there are no conduits above 2-inch diameter on this project

Q: Under paragraph 1.2.3 of section 26 05 48.00, is it a true statement that seismic bracing is only required for conduit 2 1/2" or larger?

Q: In paragraph 1.3 of section 26 05 48.00 Equipment Requirements - There are no items listed, does this mean no equipment requires seismic supports?

Q: Electrical Drawings indicate the voltage level of HVAC equipment is either 480Vac or 277Vac.

Mechanical Drawing M403 shows all of the VAV's as 120Vac. Need to find out which is correct. See attached scanned / highlighted drawings for reference.

A: VAVs need to be 277 volt. VAV schedule to be revised (revised sheet M403 incorporated via addendum #2).

Q: Drawing E101F and E101G, both have a note # 3 indicating a changed in wire and circuit voltage but none of the items in the body of drawing reference note # 3. See attached.

A: Drawing note 3 is deleted from drawings E101F and E101G (incorporated via addendum #2).

Q: Specification Section 23 09 23.13 20 Page 8 Item 1.4 b. – Current system has operator workstations at NNPTC. In what building should the new Server be located?

A: The same building that the existing is located.

Q: Specification Section 23 09 23.13 20 Page 11 – Top of page calls for Product Data for Duct Smoke Detectors and Variable Frequency drives. Are these items to be included in this section of work?

Particularly the Duct Smoke Detectors typically are provided under Fire Alarm system.

A: Yes

Q: Specification Section 23 09 23.13 20 Page 15 Item 2.1.1.10 – Please confirm there is an existing Ethernet backbone to connect BAS. Current system does not use Ethernet Backbone.

A: Use building’s existing ARCNET coax backbone.

Q: Specification Section 23 09 23.13 20 Page 15 Item 2.1.1.11 a. and b. – Please confirm we are to provide an extra communication port. This has been strictly forbidden at this facility in the past.

Please confirm we are to provide one telecommunication port per building. This also has been forbidden in the past.

A: Confirmed, so long as there is no connection to NMCI or other government networks, and the devices are located in a secure location within the building.

Q: Specification Section 23 09 23.13 20 Page 15 Item 2.1.1.12 – Please confirm that a modem is permissible at this facility.

A: Confirmed, so long as there is no connection to NMCI or other government networks, and the devices are located in a secure location within the building.

Q: The existing BAS was installed in 1998 and has been maintained but not upgraded since installation. Based on the BACnet scope there will be significant integration in B2400 to the existing to remain BAS. B2400 is part of the NNPTC campus and the scope requires the upgrade of the existing software and server as part of the project, in order to maintain the integrity of the BAS network, alarming, and reporting is it the intent that all NNPTC buildings will be required to connect to the new Server?

A: The intent is not to upgrade the complete existing system network. The intent is to interface all newly installed devices with the existing system.