PTSF QA Log 2 7-30-24.pdf

*Question 1 - 7 issued under Q&A Log 1 No. Question Response

BMS/Controls Can the current controls vendors contact information be furnished?

Johnson Controls, Inc., Taylor Hawley (405)947-0641

Controls Will the current controls vendor need to be utilized for this project or will any qualified vendor be acceptable for use?

The current controls contractor (JCI) will need to be utilized in order to map the points into the existing front-end.

Roof Warranty Is the existing roof under warranty? If so, please provide the contact info for the current warranty holder.

The existing roof is not under warranty.

Water Treatment Can the current water treatment vendors contact info be furnished?

Contractor will be responsible to flush the remaining heating hot water loop. MMAC will provide water treatment.

Water Treatment Will the current water treatment vendor need to be utilized for this project or will any qualified vendor be acceptable for use?

Contractor will be responsible to flush the remaining heating hot water loop. MMAC will provide water treatment.

TAB Pre-read Will a pre-read of any portion of the HVAC system need to be obtained prior to work commencement?

No existing HVAC systems are required to be tested. If the contractor wants to pre-TAB any systems for their own use, that will be their decision.

Gas Piping Is the contractor responsible for painting the new gas piping being installed? If so, can the type of paint required be specified?

Yes, all exposed gas piping shall be painted yellow. Contractor shall provide and install Paint System ME-OP-3A for gas piping consisting of one coat of alkyd primer and two coats of semi-gloss alkyd enamel finish coats.

Commissioning Is it the awarded contractor’s responsibility to engage a third-party commissioning agent?

Yes, it’s the contractor's responsibility to hire a commissioning agent

Existing Equipment Will the existing equipment to be removed have to be removed and hauled away by the contractor or will the equipment be turned over to the facility?

All equipment removed will become the property of the contractor to dispose of properly, unless specifically indicated otherwise. Monthly forms are completed and submitted documenting proper disposal.

Concrete Pad Demo Where concrete equipment pads are to be removed will the contractor be required to skim coat the floor to bring the floor back to a smooth finish?

Yes.

Mechanical Demo Can the chilled water piping above ceiling be abandoned in place or will the awarded contractor be required to remove it in its entirety?

No, all abandoned piping shall be removed.

Temp HVAC Is any temp cooling or heating to be provided by the contractor for use during construction?

Yes, freeze prevention will be required.

SIR 6973GH-24-R-00133

PTS Facility Mechanical Upgrades

Questions & Answers #2 7.30.24

Rooftop Condenser Will the rooftop condensing unit need to be secure to the roof? Will a roof curb or other need to be installed to help support the equipment? Please provide details for installation.

Yes, roof equipment rails designed to withstand the wind/sliding resistance specified will be required.

Lintel Will the CMU doorway infill require the installation of a lintel?

No. There is an existing lintel above the door to be removed.

Exterior Improvements The specs list “sidewalks” as a category for division 32 in the table of contents. Please clarify this scope.

New sidewalk to be provided as shown on drawing 3/A.201.

Hydronic Pipe Flush Will the new HHW pipe being installed required a flush and chemical treatment?

Flush with clean water then replace or clean strainers as specified.

Cooling Tower Supports Will the cooling tower supports need to be removed? If so, what type of supports are currently being utilized?

Yes. Cooling tower dunnage and foundation shall be removed. Dunnage is galvanized steel I-beams sitting on a concrete foundation.

Please confirm if there is any Fire Alarm System work or interfaces required for this project?

- Remove / Re-installation / Replacement of any Duct Detectors

- Any fire alarm system testing requirements

- Any fire alarm certification requirements

The current controls contractor (JCI) will need to be utilized to remove duct mounted smoke detector from existing equipment. JCI will be responsible to reconnect to existing fire alarm system, test and obtain a Beneficial Occupancy certificate from the OK Fire Marshall.

Is it acceptable for the Site Superintendent to serve in multiple capacities (“Dual Hat”)? i.e., Could the Site Superintendent also serve as the on-site Quality Control Officer and/or Site Health and Safety Officer?

Yes, but the job-site superintendent must have both, Quality Control Officer training and Site Health and Safety Officer training.

Will the site provide a space in which meetings between government representatives, the contractor and associated subcontractors can be held? Or will a job trailer be required?

Job trailer will be required. There is space to the North across the street. Roadway / curbing protection will be required.

Trane has been specified for the VRF’s, would LG or Samsung be an acceptable substitution?

Substitutions must go through the submittal process for substitution approval after award for the FAA to determine if the substitutions is acceptable

The existing RTU’s have lightning protection on them that will need to be removed. Once re-installed, will the LP system need to be re-certified per UL or LPI?

Remove and remounted lighting protection (LP) aerials on new roof-mounted. Recertification of existing LP system will not be required.

30 Are there any known discrepancies with the existing LP system? Recertification of the LP system will not be required.

Will contractor be required to provide and therefore incorporate pricing for temporary cooling onsite? If so, please identify the nature of temporary cooling required while existing components are being replaced.

Yes, freeze protection is required to protect the temporary HVAC. The contractor is responsible to adequately staff the work effort during the shut-down period(s) to Phasing Plan.

On drawing A.401 Room Finish Schedule, room 101A and 110 call for CLG-1 – “Existing ceiling to remain. Patch, repair and paint.” However, note 3 of the Room Finish Schedule calls for “new ceiling with new grid to match orientation of main room grid.”. Which is correct? Please clarify.

Remove Note #3 from Room 110. Note #3 applies to Room 101A.

On drawing A.201, detail #2, it calls for the demolition of the wall between room 101A (Storage) and room 101 (Office) and does not show a new wall being built. On drawing A.401 Room Finish Schedule, it shows carpet to remain in 101A (Storage) and 101 (Office) appears to be exposed concrete to remain. Please confirm that non-matching floor finishes for this “new” room are the design intent.

Refer to Drawing 4/A.201 note for Contractor to confirm quantity and use attic stock of carpet flooring squares. Design intent is for the floor area that was Storage 101A to receive the same flooring as Office 101 from FAA attic stock.

On drawing A.401, Room Finish Schedule, room 101 (Office) is not shown on the finish schedule.

Please provide the correct finishes within this room as there is work that is being performed there.

Refer to Drawing 4/A.201. Existing Office 101 walls to be patched where Storage 101A walls were removed. Existing walls to be painted per Room Finish Note #1. See response to Comment #31 for flooring.

On drawing A.401, Room Finish Schedule, room 110 (Office) is shown in the schedule but nowhere else in the architectural drawings does it show work to the room being performed. Please clarify.

Delete Office 110 from Room Finish Schedule. No work shall be done in Office 110.

On drawing A.201, detail #3, it appears that there is a new concrete pad, however, there is no further detail, and no specification section (In the table of contents there is 32 16 23 for sidewalks, but the spec section is not in the specs). Please clarify the design intent for this.

See specification section 32.16.23.

Reference Sheet A.201 – Partial Demolition Floor Plans, Floor Plans, Partition Types, and Details, Detail No. 1 – Partial Floor Demolition Plan. Detail 1 references Elevation Detail 6/A-201. There is no Elevation Detail No. 6 provided on Sheet A.201.

Question: Please provide Elevation Detail No. 6.

Reference to Detail 6 will be removed. No detail will be provided. Contractor shall field verify existing door opening.

Reference Sheet A.201 – Partial Demolition Floor Plans, Floor Plans, Partition Types, and Details, Detail No. 1 – Partial Floor Demolition Plan and Detail No. 3 – Partial Floor Plan. It appears that the new Door No. 112A is a 6’-0” wide x 8’-8” high door opening Question 2a: What is the size of the existing Door No. 112A that is to be demolished?

Question 2b: If new Door No. 112A is higher (taller) than existing Door No. 112A, what is the lintel support detailing required for both the load-bearing CMU wall and the brick veneer?

Existing wall opening for Door includes space for transom above door and lintel. New door shall be the height of the existing door + transom.

Reference Sheet A.201 – Partial Demolition Floor Plans, Floor Plans, Partition Types, and Details, Detail No. 3 – Partial Floor Plan. This detail indicates that a new 19’-2” x 17’4” concrete slab is to be provided.

Question: Please provide details for the new concrete slab (including slab thickness, bedding, jointing, etc.)

Concrete slab shall be 4" thick on 4" aggregate base on compacted existing soil. Refer to Specification Section 32.13.13 - Concrete Paving attached.

Reference Sheet A.401- Interior Finish Schedule, Door Schedule, Signage Schedule / Door and Frame Elevations, and Details, Door and Frame Schedule. Door and Frame Schedule refer to the door widths as 3’ x 3’.

Question: Should door widths be identified as 3’-0”?

Concur. Door widths are standard 3'-0" widths.

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