A002_QA_10_Aug_-_Hangars.pdf

FXSB172532 Repair Various Items, Hangars Questions and Answers

10 Aug 2018

Q1: Please advise the characteristics/specifications of the 400 HZ inverter requirement for hangars 10 and 11.

A1: Permanently installed ITW GSE Hobart 2400 90 kVA unit.

Q2: Please clarify 400 HZ back-up unit. Are you looking for a paralleled (N+1)-1 hot swap system?

A2: Only one unit required for each of the hangars.

Q3: Can floor plans/asbuilts for the east and west hanger floors be provided?

A3: Not at this time.

Q4: The existing control joints are +/- 1/8” below the floor surface and many have damaged concrete edges. Is the intention to cut out the existing joints and fill them level with new sealant?

A4: No

Q5: If the intention is not to replace the control joints, would the broken concrete edges just remain as is and paint them as much as possible? Please confirm.

A5: Yes

Q6: If the control joints are not replaced, will it be acceptable to mask them off during the painting process? Because the edges are rough, paint may bleed under the tape and onto the existing control joints randomly.

A6: Yes, acceptable.

Q7: Will the mezzanine level be sufficiently cleared to allow for unimpeded installation?

A7: Yes

Q8: Can floor plans/asbuilts showing all of the door locations and possibly a door opening schedule be provided?

A8: All bidders are to bid on 300 locks and provide a unit price for additional locks.

Q9: Can mechanical asbuilts, equipment submittals and/or O&M’s for the affected equipment be provided? (CLIN 0004)

A9: Will provide all available upon award.

Q10: Can architectural and mechanical pdf asbuilts of the Kulis theater area be provided?

A10: Same answer as A9 above.

Q11: Can the latest TAB report for the affected areas be provided?

A11: Not sure what this in reference too.

Q12: Will the non-corridor office separation walls require an additional layer of drywall?

A12: Walls between listed offices will require one layer.

Q13: Is it acceptable to install ½” silentFX™ to maximize sound attenuation?

A13: Yes.

Q14: Please confirm it is acceptable to terminate the additional layer of board at the underside of the existing acoustic ceiling.

A14: Yes, acceptable.

Q15: Is a product name/number available for the existing rubber base? If not, please confirm it is acceptable to match as closely as possible.

A15: Will research and provide upon award if available.

Q16: Please confirm that batt insulation be installed full width of the corridor ceilings along affected walls.

A16: No, acoustic blanket need only be installed above ceiling in offices listed.

Q17: Please confirm that installing batt insulation along all other interior office walls to 4’ out from wall is acceptable.

A17: No, please answer A16 above.

Q18: Please confirm installing R-11x24” unfaced sound batt with a thickness of 3.5 inches is acceptable.

A18: Yes.

Q19: Please confirm the user will move all items as necessary to facilitate work.

A19: Yes.

Q20: Please confirm all work will occur during normal business hours.

A20: Government not mandating working outside normal hours, but will accommodate requests provided contractor restore work area to usable condition for next day where possible.

Q21: Has there been any asbestos or lead paint testing in this area? (CLIN 0007)

A21: Not sure what area is being referenced, but if it is mechanical room Hangar 11 abatement has occurred for that tested above acceptable levels.

Q22: During the site visit, it was stated that the (2) approximately 9’x6’ housekeeping pads are to be removed. Please confirm.

A22: Pads can stay as room is to be used for storage.

Q23: As the existing plaster ceiling that will be terminated at the new wall at is not fire rated, can we assume the new wall and door assembly will not require a fire rating?

A23: Contractor must meet code.

Q24: Once the housekeeping pads are removed and the floor is patched smooth, will any additional finish be required at either the patched or existing areas? All of the existing areas have peeling red paint.

A24: Please see answer to question A22 above.

Q25: Please confirm the only wall substrates to receive tape/paint will be the new Gypsum Wallboard.

A25: Yes.

Q26: Please confirm this scope has been deleted. (CLIN 0008)

A26: CLIN 0008 scope has been deleted.

Q27: Can floor plans/asbuilts for the affected areas be provided? (CLIN 0009)

A27: Same answer as A9 above.

Q28: Please provide a sketch for the desired new configuration. (CLIN 0010)

A28: All sketches already provided

Q29: Can an approved submittal for the existing trench drain product be provided?

A29: Not available.

Q30: Please confirm the user wants two 17’ trenches extending from the main drain.

A30: Yes, that is correct.

Q31: Can under slab asbuilts be provided that show existing Mechanical/Electrical/Plumbing items?

A31: See A9 above.

Q32: In the paragraph 3,a,v under “Project Objective” you have stated a need for two 90-kVA, 400 HZ, frequency converters in each hangar with one being primary and one being backup.

Will the backup only be used if the primary goes down and manually turned on?

A32: Clarification provided in A2 above.

Q33: Will the contractor be provided with drawings indicating existing, and detailing related new work?

A33: No additional drawing are forthcoming.

Q34: Will the contractor be provided specifications for new, and new “match existing” items?

A34: No further specification will be provided. Government will provide information on existing if available upon award and needed.

Bldg. 17470: Epoxy hanger floors

Q35: What is the square foot area of each hanger?

A35: Measurements are the responsibility of the contractor.

Q36: Does the mezzanine floor(s) receive epoxy finish?

A36: No.

Q37: Will there be any equipment or devices that require the contractor to remove before new work? Replace after new work?

A37: No and no.

Q38: Will existing joint sealant require removal and new material installed? If so, will you provide specifications on installation profiles (depth, backer rod, tooling, profile of surface, etc.?)

A38: No.

Q39: Existing metal work at some exterior doors show significant rust/corrosion at and near the floor where new epoxy it to be installed. Is correction of this degradation going to be part of this work? If so, please specify remedy.

A39: Not required as part of this contract.

Bldg. 17470: Install galvanized steel mesh fence and gates

Q40: What are the specifications for the new fence, gates, hardware, etc.? What is the layout dimensions for the new fence and gates?

A40: Match existing for materials. As for layout, split existing space in half.

Q41: Will contractor be provided an existing keying plan, and information regarding the new plan requirements for all doors (approximately 300) that will receive new cores?

A41: Contractor is to develop key plan based on occupant organization structure

Bldg. 17470: Repair HVAC system

Q42: How are existing fan motors to be replaced, to be disposed of?

A42: They become property of contractor.

Q43: What are the specifications of the existing ceiling tiles and grid?

A43: Will research and provide upon award if available.

Bldgs. 15455 & 16430: Replace 400 hertz inverters

Q44: How are existing inverters to be replaced, to be disposed of?

A44: They become property of contractor.

Bldg. 16468: Repair sound attenuation for five offices

Q45: What is the STC rating requirement for the sound attenuation work?

A45: Government will be satisfied if work is completed as prescribed.

Q46: How will new work be determined to meet the attenuation goals of the project?

A46: See A45 above.

Q47: Please confirm the room numbers for the sound attenuation.

A47: Rooms 228, 229, 230, 231, and 232

Q48: What detail will be required at door jambs, outlets, and other penetrations where the second layer of sheetrock is added?

A48: Tapered to meet existing faces of door jambs and outlet boxes extended or adjust for a flush finish with new wall surface.

Q49: Have you considered other options for sound attenuation, perhaps filling the wall cavity with sound attenuation material in lieu of adding additional layers of sheetrock? Perhaps including STC rated door jamb seals?

A49: Had sound study completed by AE firm and measures being taken are their recommendations.

Q50: What standard of quality is required for hardware (drop down door seals) and sound attenuation blankets?

A50: Please see Q/A 18 above regarding blanket and drop door seals shall be commercial/industrial quality designed for purpose in which they will be used.

Bldg. 16430: Construct small storage room

Q51: Has there been a Haz-Mat survey performed on the areas impacted by this work? Will you provide it to the contractor?

A51: Yes and yes, it will be provided to the awardee.

Q52: The two boilers indicated to be removed during the walk through; what are the limits of removal?

A52: Housekeeping pads and through ceiling penetrations may remain. Rest of system shall be removed.

Q53: Will concrete floor pedestals and curbs require removal, including patch and refinish floors? If so, please specify.

A53: No.

Q54: Where will the connected piping be terminated?

A54: Far enough from units that it won’t be inside newly created room.

Q55: Are the roof penetrations part of the work?

A55: No.

Q56: Has the structural soundness of the roof been determined?

A56: See A55 above.

Q57: What materials, finishes, lighting, sprinklers, sensors etc. are to be included?

A57: Room should meet all code requirements to be used for light storage of tools and building maintenance materials.

Bldg. 16468: Remove interior walls

Q58: Will new walls need to be built to maintain separation with fire-rated corridor?

A58: New wall needs to be constructed to meet code.

Q59: How are the existing doors to be removed, to be disposed of?

A59: Any items remove by contractor will become property of contractor unless designated for re-use.

Q60: Will new ceiling grid, new ceiling tile be required? Please provide specifications.

A60: Not required.

Q61: Will the existing light fixtures be adequate, or will the work require add to or subtract from existing lighting? What is the intended new layout?

A61: Not required.

Q62: What is the intent for the existing vertical duct that is currently walled in?

A62: It shall remain.

Q63: Will there be requirements for power and com receptacles in the new open floor area?

A63: Existing receptacles shall be relocated to remaining walls.

Q64: What is the new layout for power and com and life safety receptacles and devices that will be disturbed by existing walls to be removed?

A64: Same answer as A63.

Bldg. 16430: Extend/repair floor trench drain system:

Q65: Will contractor get specifications for existing in place materials to match with new?

A65: Assume not available.

Q66: Walk through did not reveal “repair” work. Please clarify if repair work is to be performed, and what requires repairing.

A66: Repair is word used by Air Force for every type of work that is not building something new where nothing previously existed.

Q67: Will new concrete surfaces require epoxy finish? If required, will new finish be limited to a specific area? Please specify limits, if applicable.

A67: Limited to area contractor affected.

Item ii - FENCE/GATES

Q68: Please note/provide dimensions of the fence segments to be installed including the opening width of the walk gate.

A68: Measurements are contractor responsibility.

Q69: What is the desired height for the new fence to be installed?

A69: Match existing. Approximately 10 feet tall.

Q70: Does the gate to access the new enclosed section need to have any special lock sets or will a simple lockable for latch suffice?

A70: Simple lockset is sufficient.

Q71: The existing mezzanine floor is concrete. Please clarify thickness of floor and if there is anything beneath it that can be compromised by drilling and installing concrete anchors.

A71:

Item iii – Lock Cores

Q72: Has the Owner confirmed that all existing doors/locks/hardware to be modified are compatible with the Best “Cormax” system? Are all existing locksets 7-pin?

A72: Yes, factory representative has toured facilities and is awaiting contractor to make contact.

Q73: What are the required deliverables for the “key plan”?

A73: Please contact provider.

Q74: Are the Bidders to include 300 cores in their proposal, or has a “firm” quantity been determined?

A74: 300 and cost for additional will be negotiated if needed.

Q75: Have the specific doors to be re-cored been identified?

A75: All doors in both buildings.

Item v – Inverters

Q76: Please confirm that there is only (1) inverter in each hangars 10 and 11, total QTY for replacement is (2).

A76: Only one in each building.

Item vi – Sound Attentuation

Q77: Please confirm room #’s and total QTY of offices to be included in this line item

A77: Five offices.

Q78: Please clarify if only shared walls with adjacent offices are to be modified, or if the interior (hallway) walls are also to be included.

A78: Both.

Q79: Are BOTH sides of shared walls to receive an additional layer of GWB, or just (1) side of each shared wall assembly?

A79: One side.

Q80: Is “sound-board” with the use of resilient clips required, or is standard GWB permissible?

A80: GWB permissible.

Q81: What level of finish is required on the new walls? Match existing?

A81: Match existing.

Q82: Is the additional layer of GWB intended to go above the drop ceiling, and all the way up to the hard lid above?

A82: Not required to go to hard lid.

Item Vii – Storage Closet

Q83: Is the cost to demolish the (2) existing Birchfield Boilers within the scope of this project/proposal effort?

If YES – has an ACM survey been performed on the boilers? If so, can this survey be provided?

If YES – to what extent is the piping to be demolished? Do stacks through the roof need to be removed in their entirety?

If YES – does the housekeeping pad under each boiler need to be demo’ d?

If NO – please provide a floor plan showing the location of the new storage closet, with wall details providing the height of walls and type of desired ceiling, as well as lighting and outlets.

A83: Yes and please see answers to follow-up questions in answers to same issues provided to questions above.

Item ix – Remove interior walls

Q84: Are any doors to be provided under this line item? If so, what type of doors/hardware?

A84: Existing doors/hardware that are to be removed are to be re-used.

Item x – Floor Drains

Q85: During the site visit, it was mentioned that the concrete Hangar floor Is 15” thick – can you please confirm the floor thickness?

A85: Plans show 10 inches.

Q86: Bullet 1 requires sealing all cracks, is there a basis of bid quantity that should be used?

A86: Estimating quantity of existing is contractor responsibility.

Q87: Bullet 1 requires sealing all joints, is the intent to remove and reseal all of the existing control/expansion joints? If so the specified product is not recommended for this purpose per our talks with the manufacturer. Please confirm both intent and material.

A87: Removing and resealing is not the intent.

Q88: Bullet 2 lists the coating system being applied to the floor. This is an excellent coating system; however, there are no requirements listed for any non-skid or slip resistant additives.

Additionally, if the final product of this recoat is intended to be similar to the existing coating this material will not provide that as it is a thin film with a very flat layout. Please advise if there are any requirements for non-skid and confirm that the new coating is not intended to have the same heavy roll appearance that the existing coating has.

A88: Use listed coating system or approved equal.