JA08 FTQW235100 Repair Hangar Doors (B1340) Questions and Answers Updated 1-28.pdf

FTQW235100 Repair Hangar Doors B1340 – Site Visit Questions and Answers

Submitting questions received by April 30th 0900:

Question 1 : I just needed to clarify some scope regarding the reinstallation of fire alarm equipment. Per E200, flame detectors which were removed and reinstalled shall be tested in accordance with UFC 4-211-01. The initial test of these devices was performed with a 2x2 ft flame pan tester which the system device manufacturer would ship up for the commissioning of the system. Please confirm if this will be required, or if an alternative test may be acceptable. Per E100, IDS devices and interlocks are going to be demoed, reinstalled, and tested by government security personnel. Please confirm this is out of scope for the contractor.

Answer 1 : The initial test will be performed as stated, and in accordance with the UFC, specs, and manufacturers’ recommendations. Once that test is complete the Government alarm shop in coordination with Eielson Fire will test the system to ensure it works for the base system.

Question 2 : There are multiple references in 01 00 00 General Requirements to Commissioning, Commissioning Plan, and Commissioning Authority. However, there is no specification addressing commissioning. Will commissioning be required for this project?

If yes, then what systems would be commissioned?

Answer 2 : No third party commissioning is desired or expected. Technical specifications for hangar door operating system and the snow melt system contain performance verification requirements. With regard to 01 10 00 activity names for commissioning items, the contractor shall include activities in their schedule that follow along with requirements in the technical specifications for system start up, testing, performance verification, etc...

Question 3 :

Reference sheet M110:

• Detail D1 shows 5/8” radiant tubing.

• Detail D7 shows 1” radiant tubing.

• Which is correct?

Answer 3 : 5/8” radiant tubing is the correct minimum size. Revised M110 drawing provided for reference.

Question 4 :

Reference sheet M110, Detail D1, Radiant Heating Manifold:

• The detail shows that each high temperature service is to be balanced to 12 gpm.

• The detail shows that each radiant circuit is to be balanced to 12 gpm with 5/8” radiant tubing.

• The Circulating Pump Schedule on sheet M001 shows a capacity of 15 gpm @ 36’ head for each circulator CP-1A, CP-1B, CP-2A, CP-2B.

• The Snowmelt Manifold Schedule on sheet M001 shows a capacity of 12 gpm for each manifold; each manifold has 8 circuits for a circuit flow of 1.5 gpm.

• It appears that the Snowmelt Manifold Schedule is correct (or nearly so), such that each radiant circuit should be balanced to 1.5 gpm (12 gpm/8 circuits) or 1.9 gpm (15 gpm/8 circuits).

Answer 4 : Snowmelt manifold is the correct performance requirements with the 12 GPM.

Revised M110 drawing provided for reference.

Question 5 : Is “Contractor Parking” to be considered the Contractor’s fenced laydown yard?

Answer 5 : The intent is for the contractor parking and the hangar bay would act as your laydown area. If additional areas are required, please request through the PM. All parking and laydown areas will be fenced to protect equipment and prevent trespassers.

Question 6 : On the east side of B1340, paralleling Cargain Rd, a buried utilidor exists. Drawing C003 shows a temporary construction boundary fence installed between the utilidor and Cargain Rd. What buried utilities exist where the temporary fence is installed (if driven is required)?

Answer 6 : Reach out to shop

Question 7 : If the Contractor has a fenced laydown yard at an alternate location, would temporary fencing be required at the parking lot?

Answer 7 : Yes. If the facility is being closed for construction then we would like the entire area to be closed off so there are no issues with personal vehicles, and no issues between the construction crew and occupants of nearby facilities.

Question 8 : Sht C700, Detail C1 shows a 21” O.C. spacing of dowels. Detail C5 shows #6 dowels to be 36” long with 18” embedment into existing slab. The note under Detail C1 states, “Dowels shall not be placed closer than .6 times the dowel bar length . . .” Given this information, .6 x 36 = 21.6”. Is the spacing on Detail C1 to be 22” O.C., minimum?

Answer 8 : 22" on center bar spacing is acceptable. Note on redline drawings for incorporation into record documents.

Question 9 : Sht C600 states, “Geotextile Separator to Match Existing.” Does this mean in context of depth or manufacturer/type?

Answer 9 : The Geotextile Separator needs to match the existing depth and type. Suitable substitutes to the manufacturer will be submitted to the CE PM for review and approval.

Question 10 : Sht C600 shows rebar hook embeds at 20” O.C. doweled into existing foundation wall. What is dept of embedment?

Answer 10 : Minimum embedment into the existing stem wall foundation shall be 20".

Question 11 : Are the rebar hooks embedded in the foundation wall to alternate directions?

Answer 11 : Alternating hook direction is acceptable, but not required.

Question 12 : Sht A400 – Please confirm the existing door tracks are to remain?

Answer 12 : Door tracks are to remain. Refer to structural drawings for track requirements.

Question 13 :Sht A205, Interior Finish Notes – States see “Finish Plans for Additional Information” Are the counterweight enclosures steel-stud framed walls with GWB each side?

Answer 13 : Counterweight enclosures are constructed from structural steel angle framing and plate steel. See A6/A205 for counterweight enclosure construction requirements.

Question 14 : Can lights above the door tracks be removed for protection purposes during work and re-installed?

Answer 14 : The lights that exist can be removed if needed for construction. However, lights need to be installed in the same manner they were removed. Contractor should verify that lights are operational before removal. Contractor will be responsible for any damage otherwise.

Question 15 : A large crack was noted in the asphalt apron outside the demolition zone. Are any repairs required for the crack.

Answer 15 : If it is outside of the excavation extent on page C100, then the contractor will not have to make any repairs to the cracks on the asphalt.

Question 16 : Will this project require a full time, singular SSHO on site?

Answer 16 : Yes.

Question 17 : Will this project require a full time, singular QCSM on site?

Answer 17 : Yes.

Question 18 : Will this project require a full time, singular PM on site?

Answer 18 : Yes.

Question 19 : Can the superintendent dual hat as the SSHO?

Answer 19 : Singular SSHO is required.

Question 20 : Can the Financial Institution Reference Sheet be stricken from the required bid documents?

Answer 20 : No, this is required in accordance with RFO 9.104-1

Question 21 : On Sheet C003 there is a heavy dashed line drawn around the “AF Temp Parking” area; is this required to be fenced?

Answer 21 : If the AF temp parking remains then that parking will not need to be fenced.

Only the contractor areas will require fencing.

Question 22 : Temp Fencing- 01 50 00 states that fencing must comply w/ EM 385-1-1 which is a minimum of a 4 ft high fence. However, in other parts of 01 50 00 is states that the fence must be 8 ft high. Will a 6 ft high fence be sufficient for this project?

o Is above grade fencing acceptable in lieu of driven fencing?

If not, what is the minimum procedure/spec for patching the asphalt at driven fence post locations.

Answer 22 : A 6’ fence is okay for contractor areas off the airfield like the parking lot at the front of the facility. On the flightline the fence must be flush with the subgrade, 8’ in height, and driven into the ground. The hole must be filled with an epoxy or other approved material that meets the spec of the existing concrete or asphalt.

Question 23 : Please confirm the hangar door design details are delegated to the hangar door manufacturer and contract drawing are for reference only, if not will the government design team be providing a stamped design.

Answer 23 : Yes.

Question 24 : Could you please confirm: If any reference images of the hangar doors are available, The required specifications/format for the images, and The process for obtaining authorization to capture photos (if needed), considering base restrictions.

Answer 24 : Authorization will be granted by escort for photos. The government can take photos on the contractors’ behalf. No photos will be taken in the direction of the taxiway or flightline unless specifically cleared through the government. There will also be no photos of any aircraft or aircraft assets.

Question 25 : Section 02 61 13 para 3.4.1.1 Sampling Excavations states "Analyze samples for the contaminants identified in paragraph PERFORMANCE REQUIREMENTS. " The paragraph PERFORMANCE REQUIREMENTS is not included in the spec.

Can the paragraph PERFORMANCE REQUIREMENTS be published or can the list of contaminants requiring analysis be provided?

Answer 25 : After research this seems like a dead-end spec. This spec will have to be amended and identified from the A/E to clarify post award.

Question 26 : We received Amendment 001 and have some follow-up related to questions #16 - #19. The four questions in the Q&A indicate each position is to be filled by a separate individual.

Specification Section 01 45 00 states the QC Manager is allowed to dual-hat within the project. Paragraph 1.6.2.2 states the QC Manager must be an individual with . . . 10 years’ combined experience in the following positions: Superintendent, QC Manager, PM, Project Engineer or Construction Manager in similar size and type construction contacts.

Can the QCM dual-hat as the on-site PM?

Answer 26 : Yes.

Question 27 : Question about the redundant concrete specifications (Sections 03 30 00 and 32 13 14.13). Considering the concrete threshold is being placed at the building, is there relevancy for specification 32 13 14.13, Concrete Paving for Airfields and other Heavy Duty Pavements? This specification typically applies to runways, taxiways and large exterior aprons. Would the Government omit/rescind this specification section from the design?

Answer 27 : 03 30 00 is the primary concrete spec. If there are any questions regarding concrete refer to 03 30 00.

Question 28 : Clarification on Specification 01 45 35, Paragraph 1.3.9, the Structural Engineer of Record is the Designer of Record for the project as contracted by the Government, correct?

Answer 28 : The Government’s contractor with the A-E has concluded except for errors and omissions. The Contractor has the option to separately retain the DOR as their construction documents.