Attch 06 - Site Visit - Questions and Answers - 24 Aug 2022.pdf
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- Attached to
- Repair HVAC Systems - Bldg 90141 Hurlburt Field
- Solicitation number
- FA441722B0005
About this file
This document provides details for a solicitation seeking repair of HVAC systems at Building 90141 at Hurlburt Field. The project involves replacement of HVAC equipment including a chilled water system with variable air volume air handling units supplying variable air volume boxes with electric reheat as required. Direct digital controls will be utilized for building level HVAC system controls. The work is required to be completed within 300 calendar days of notice to proceed by the 1st Special Operations Civil Engineer Squadron of the Air Force Special Operations Command. The estimated value of the contract is between $1 million and $5 million. The solicitation will be set aside 100% for women-owned small businesses and follow sealed bid procedures. The contract type will be firm-fixed-price with payment and performance bonds required within ten days of award.
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Attachment 06 Site Visit Questions and Answers
24 August 2022
CP1041875 PROJECT TITLE: REPAIR HVAC SYSTEMS, BUILDING 90141
Q1: It states on SECTION 23 09 23 Page 7 2.1.1 Schneider Electric I/A Network 8000 Direct Digital Control System, this is an obsolete system would an open protocol BACnet Lynxspring Niagara 4 control system be an acceptable alternative?
Response: System needs to be next generation Snider Electric SmartX DDC which is approved to run on the base network.
Q2: Drawing A-100 Reflective ceiling plan demolition state that all of the existing ceiling grid will be demolished, will we need to provide labor and materials to temporally support the existing light fixtures?
Response: Yes, the existing light fixtures are to be reused.
Q3: Drawing G-002 shows 4 temporary AC units will these be all operating at the same time or by the phases of the project?
Response: Please read phasing notes on sheet G-002. During phase 4 all the units will need to be installed and operating while AHU-2, chiller piping and pumps are being replaced.
Q4: What will the power requirements of the temporary AC units and where will they be fed from, also is there any specs on the temporary power requirements as far as safety and protecting the temporary power?
Response: “The contractor shall provide (4) temporary industrial cooling units at 15 tons each or the next commercially available size. Contractor shall provide temporary power generation as required to meet the power requirements of the temporary cooling units.
The contractor’s temporary power equipment on the worksite should be protected from vehicle traffic, accessible only to authorized persons and suitable for the environment being installed. Temporary cabling and connections to equipment shall follow both NFPA 70 guidelines and equipment connection requirements. Install temporary fencing fully around each generator and ensure there is a minimum of 4’ of walkable space along all sides. Install a ground rod and bond to the temporary fence at each location.
Follow all OSHA guidelines for safety.
Q5: The current POP is 300 calendar days from NTP. Current lead times for mechanical units are as much as 30 weeks (210 days). Given extensive lead times, please confirm that NTP is from material on-site of if the POP can be accommodated to reflect changing lead times for equipment.
Response: NTP will be issued to begin the submittal process. When long lead items are approved, performance will be suspended. On-site mobilization and demo to begin when suspension is lifted; work shall be coordinated with the Contracting Officer and detailed in progress schedule according to when materials will arrive on site.
Q6: Please confirm existing ACT is tegular and replacement ACT needs to be tegular.
Response: Replacement ACT needs to be tegular.
Q7: Please confirm the existing piping to the VAV boxes are to remain in place and be reused?
Response: The existing VAV boxes have electric heat. There is no piping to the VAV boxes. The new VAV boxes will also have electric heat.
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