B456 HVAC PRFIs_Answers.docx
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- Solicitation number
- W50S9D-24-B-5001
- Issued by
-
Department of the Army National Guard
About this file
This document contains answers to questions regarding solicitation number W50S9D-24-B-5001 for HVAC repairs to building B456 at the 141st ARW CES. The work includes replacing the HVAC unit and DOAS, running new electrical and gas lines, and adding return air grilles below VAV boxes. Selective demolition is required for the new lines and duct sizes must be designed to provide proper airflow. Pricing may not be adjusted after 180 days and there are no options to be separately priced, as this will be a lump sum contract incorporating all plans and specifications. Space will be provided on site to move furniture and phases will be based on provided drawings, with beneficial occupancy for each completed room. Interior walls and finishes are existing.
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B456 HVAC PRFI’s as of 19 Dec 23
-Will contractors be responsible for replacing drop ceiling after demo in CONS/ENG section?
Yes -Will all electrical be above ground outside?
Electrical conduits from B456 exterior wall to the HVAC unit and DOAS must be below ground.
-Will freeze protection be needed outside? (320-volt circuits) The electronics and circuits for the HVAC unit must be rated for below freezing temperatures.
-There are no convenience outlets outside, there will need to be some added.
No -Should selective demo outside be expected?
Yes. Selective demo is required for new natural gas lines and electrical conduits.
-IFB page 74 3.3: The work hours stated is T‐F (10hrs a day) and in the Specifications section 011100 1.19 states M‐F 7:30‐4:30. Please confirm which is correct?
Monday through Friday from 0600-4:30 is acceptable for this project.
-Is there a current Asbestos/LBP survey that can be provided for this building?
The building is 22 years old and an asbestos/LBP survey is not required.
-Do all of the designated ceilings need to be completely removed in each room or is up to the contractor to remove as much as needed to perform the work and just replace the sections removed?
Selective demo is acceptable if requirements below are met.
CUTTING AND PATCHING
A. Cutting and patching includes cutting into existing structures to provide for the performance of the work and subsequent fitting and patching as required to restore surfaces disturbed, damaged or otherwise altered to their original or specified condition.
B. Visual Requirements: Do not cut and patch work in a manner that would result in substantial visual evidence of cut and patch work. Remove and replace work judged by the COR to be cut and patched in a visually unsatisfactory manner.
C. If possible, retain the original installer or fabricator, or another recognized experienced and specialized firm to cut and patch.
D. Use materials for cutting and patching that are identical to existing materials. If identical materials are not available, or cannot be used, use materials that match existing adjacent surfaces to the fullest extent possible with regard to visual effect. Use materials for cutting and patching that will result in equal-or-better performance characteristics.
E. Restore surfaces of patched areas to match adjacent finishes. Where necessary, extend finish restoration into retained adjoining work in a manner, which will eliminate of patching and refinishing.
-What is the maximum amount of rooms (or sq. ft.) we can work in per phase?
Phase the project based on AD-101. Phase 1 - Area A, Phase 2 - 1/2 of Area B, Phase 3 - Area C and 1/2 of Area B. Beneficial occupancy will be provided for every completed room in each phase.
-Per the specifications the contractor is to remove the furniture. Is there a place in the building to store the furniture? If not, can it be stored in a conex box on site?
Space will be provided in B456 to move furniture if required.
-IFB 13.D states that the contractor is to hold their price for 180 days. Due to an unstable supply and vendors not holding their pricing no more than 30‐90 days on most items. Will the government allow adjustments to the final price if proper backup is provided?
No
Is separate pricing required for any options on this requirement?
No. There are no options on this contract. This will be awarded as one lump sum and all options mentioned in the plans & specs will be incorporated into the base bid of one lump sum. We would like pricing broken down by trade, for evaluation purposes.
Amendment #1 Comment #15 says “see attachment for new engineering / contacting office layout and HVAC plan. “. Duct sizes, CFM requirements, Wall locations and dimensions were not provided.
Will new drawings be provided pre bid?
No
Is this area a design build?
Yes, the HVAC company is responsible for sizing the supply/return duct work and VAV to support the proper CFM to the new rooms in the engineering/contracting office.
Are the interior walls shown in the referenced attachment existing, or is it the intent for the KTR to include the framing of new walls, doors and finishes in the proposal?
The interior walls, doors, and finishes are existing.
Amendment #1 Comment #7 states to Add ceiling grilles to existing VAV’s for fresh air to units. Please clarify the intent of this comment.
Add 1’ x 2’ egg crate grill below each VAV.
Are the new grills to be ducted the DOAS system or is it an open ceiling plenum (no transfer air openings identified) No Will new drawings be provided for bidding purposes?
No Please provide CFM and Neck size of additional grills See response above
File details come from the government source that posted it. Updated .