Attachment 03 - Questions and Answers Final.pdf

Solicitation Number: W912QG21B0002 Title: Repair Runway Pavements Questions and Answers 02

Question 1 In reference to the demolition plans, specifically CD101 and CD102, will the government please provide structural thickness for 1) the abandoned Taxiway north of RW 14-32 2) the access road connecting the abandoned Taxiway to Taxiway P and 3) the access road south of RW 14-32.

RESPONSE – For the abandoned taxiway, assume 6 inches of concrete. A two inch asphalt overlay is present from the edge of Runway 14/32 to approximately 120’ north of the Barrier House access road. For the barrier house access roads, assume four inches of asphalt. (This is essentially Question 8 on the first set of questions.)

Question 2 In reference to plan sheet CS117, there is a note stating “partial depth repairs as needed and laid out after milling by the COR. 2.5” asphalt overlay following partial depth repair.” Will the government please provide a quantity for the repair necessary? Or at the least, an assumed quantity that the Contractor can accurately quote the work necessary to make repairs, similar to plan sheet CP122 that depicts dimensions.

RESPONSE – All partial depth repairs will be addressed in the field after inspection of milled surface. A price for partial depth repairs will be negotiated once the quantity of repairs has been determined. Contractor shall not include a price for partial depth repairs in their bid.

Question 3 On Sheet CP-109, Note 2, it says "Contractor shall repair concrete spalls and partial depth patching prior to overlay. The amount and extents of concrete repairs shall be coordinated and agreed upon by the COR before repairs begin." Please advise on if we should price these spall repairs as a unit price, lump sum, etc. Please consider providing a QTY for spall repair so we can provide a unit price.

RESPONSE – All partial depth repairs will be addressed in the field after inspection of milled surface. A price for partial depth repairs will be negotiated once the quantity of repairs has been determined. Contractor shall not include a price for partial depth repairs in their bid.

Question 4 On Sheet CS-122, on the top left of the page there is a Match line with Sheet CS125 called out. Please confirm that this is supposed to be CS129, as it appears to be in the drawings.

RESPONSE – Revise Match Line reference to sheet CS125 to CS129.

Question 5 The batch plant location shown on sheet GC141, only allows a 30ft. vertical ceiling for equipment. When erected, the concrete batch plant will be above 30ft. tall thus over the 262.00' max elevation. Please increase this max elevation to 272.00' to accommodate erected batch plant.

RESPONSE – Max equipment elevation to be revised from 262’ to 360’. This allows up to 98 feet AGL for equipment and batch plant.

Question 6 Section 00010: Please provide more detail on the limits of work to be included within

CLIN 0004.

RESPONSE –The Taxiway G Base Bid includes the first adjacent row of slabs starting at STA 176+70 to STA 181+30. All work southwest of this row of slabs shall be considered work associated with Taxiway G CLIN 04.

Question 7 Section 00010: Is the single row of concrete panels shown in pink on Sheet CP307, to be included with the Taxiway G work per CLIN 0004, or is this row of panels to be a part of CLIN 0001?

RESPONSE – The Taxiway G Base Bid includes the first adjacent row of slabs starting at STA 176+70 to STA 181+30. All work southwest of this row of slabs shall be considered work associated with Taxiway G CLIN 04.

Question 8 AB331: Clarify and/or confirm that no reinforcing or WWF is required in the 5" slabs in front of the new shelter foundation. If required, then please provide reinforcing information.

RESPONSE – No reinforcing required in the 7’x6’ 5” concrete pad.

Question 9 In reference to the Gilsonite Seal Coat, will the government please clarify if the mixture is 2:1 or 1:1?

RESPONSE – As specified in specification section 32 01 13.63 the dilution rate shall be 2:1.

Question 10 The first sentence under Part 1 in specification section 32 01 29.61 states "This section is only for the partial depth repairs shown on Runway 14-32." We are unable to find any spall repairs on Runway 14-32. Are any spall repairs required on Runway 14-32?

RESPONSE – Partial depth repairs are required on Taxiway P prior to overlay.

Question 11 Note 3 on sheet CD105 states "Contractor shall repair concrete spalls and partial depth patching prior to overlay. The quantity and extents of concrete repairs shall be coordinated with the COR before repairs begin." A note on CS117 pointing to the overlay area for Taxiway P states "Partial depth repairs as needed and laid out after milling by the COR. 2.5" asphalt overlay following partial depth repair." What quantity of partial depth repairs should be included in the bid for Taxiway P? Please provide details for the partial depth repairs.

RESPONSE – All partial depth repairs will be addressed in the field after inspection of milled surface. A price for partial depth repairs will be negotiated once the quantity of repairs has been determined. A partial depth repair detail will be supplied at that point. Contractor shall not include a price for partial depth repairs in their bid.

Question 12 On sheet EA103 the underground electric that crosses Taxiway C is shown with ||E|| symbol which is defined on sheet GI005 as "Remove Electric, Underground". On sheet EA123 new underground electric is shown crossing Taxiway C labeled as Keynote 5.

Keynote 5 is "Directional Drill HDPE Conduits Across Existing Taxiway." There is no demolition of the Taxiway C pavement shown on the drawings. Is the intent to cut and remove Taxiway C pavement as required to remove the underground electric shown on sheet EA103, patch Taxiway C pavement and then directional bore the conduits under Taxiway C?

RESPONSE – The existing conduit shall remain in place since Taxiway C is not being removed. The existing cables shall be removed to the limits shown in the plans. New cables shall be connected as illustrated in the plans through the proposed manholes and proposed directional drilled conduit.

Question 13 On sheet EA104 the underground electric on the south side of Runway 14/32 from approximately station 168+50 to 170+00 is shown to be removed. On sheet EA124 and Section 1/EA504 new electrical conduit is shown to replace the removed underground electric. The pavement where this underground electric is located is not shown to be removed. Is the intent to cut and remove runway shoulder pavement as required to remove the underground electric shown on sheet EA104, install the new electrical conduit and patch the runway shoulder pavement?

RESPONSE – The existing conduit shall remain in place. The existing cable connecting runway edge lights shall be removed and new cable shall be pulled through existing conduit.

Question 14

CLIN 03, ABI#2 TW P Asphalt Overlay – Are we to include the electrical work associated with TW P in CLIN 03 or apply this work to CLIN 001g?

RESPONSE – The four electrical cans called out for removal and associated work beyond the full depth reconstruction limits (approximately 6+25) shall be included with CLIN 001g.

Question 15 CP304: This section shows 14.5” PCCP over 8” drainage layer (22.5” total). The shoulder section shows 3” asphalt over 9.5” CABC over 8” drainage layer (20.5” total).

This is 2” less thickness at the PCCP edge. Should the CABC thickness be increased to 11.5” at the PCCP edge?

RESPONSE – The CABC thickness shall be increased to make the pavement sections match.

Question 16 32 11 23.23: Can curing compound be used to cure cement-stabilized drainage layer?

RESPONSE – Specification only calls out water. Curing compound cannot be used to cure the cement-stabilized drainage layer.

Question 17 Statement of Work: If Stage 1 is completed in less than 180 days, will the unused time be added to the Stage 2 180 days?

RESPONSE – No, Stage 2 construction will begin upon the receipt of the Notice to Proceed and will consist of 180 calendar days.

Question 18 32 01 18.71: This states that the curing period prior to grooving is 30 days for asphalt and 28 days for concrete. Will the grooving and subsequent paint marking of the runway have to be accomplished within the 180 day construction time?

RESPONSE – Yes the 180 day construction time includes grooving and marking.

Question 19 CP304: Pavement Section includes PCCP, 4” Drainage Layer and Geotextile fabric for T/W’s A, H & F. CP307, Section O-O shows PCCP and 6” CABC only for T/Ws A & H.

Please clarify.

RESPONSE – Contractor shall utilize Typical Section B-B for first row of adjacent concrete slabs at Taxiway A, F (northeast side) and H intersections.

Replace pavement section notes “Match Existing Concrete (Approx. 10”)” and “6” Crushed Aggregate Base (Salvaged or New)” on the right side of Typical Section O-O to read “See Typical Section B-B for Taxiway A and H pavement section.”

Question 20 CP306: T/W F (LT) Is shown as 10’ wide, 17.5” PCCP shoulder. CS113 depicts this area as 20’ wide panels. Please clarify.

RESPONSE – Revise Section K-K on Sheet CS113 from 10’ Shoulder to 20’.

Question 21 CP306: T/W F (LT) Is shown as 10’ wide, 17.5” PCCP shoulder. CS113 depicts this area as 20’ wide panels. Please clarify.

RESPONSE – Revise Section K-K on Sheet CS113 from 10’ Shoulder to 20’.

Question 22 GC142: This note says that the base will supply gate guards. Slide 7 of the PowerPoint from the Pre-Bid says the contractor will provide trained gate guards. Please clarify and if contractor-provided, please clarify training required and whether they must be bonded and/or armed.

RESPONSE – Change from Briefing. Base will provide gate security for extra access point as described on Sheet GC142.

Question 23 CS112: Please confirm the pavement section around the fairlead beam foundations. I can’t find this in the pavement sections or cross sections other than the 10 foot shoulders.

RESPONSE – Contractor shall refer to sheet AB213 for pavement section required between the Runway edge and Fairlead Beam Foundation. Contractor shall refer to sheets AB301 thru AB303 for the pavement section required for the AAS Trough across the Runway.

Question 24 Please clarify what type of sealant is used for the CJ type joint (Asphalt Control Joint)?

The plan detail CP501 says to use field molded sealant. Section 32 01 19.61 Part 2.1 Sealants says to use a silicone, but there is a list of joint types to use silicone on and the asphalt control joint is not included. Please clarify.

RESPONSE – Asphalt control joint (CJ) shall be sealed per specification 32 01

19.61. Sealant shall conform to ASTM D5893/D5893M (self-leveling).

Question 25 Will trucks delivering materials be searched every trip through the access gate? If so, what is the typical inspection delay?

RESPONSE – Delivery trucks are searched when entering the base. Time required varies based on workload of personnel. Typical access time is fifteen minutes. Drivers who make repeated deliveries to base need to be added to an Entry Authorization List to expedite entry. Delivery of time sensitive material (like asphalt) needs to be coordinated with the COR in order to minimize delivery delay.

Question 26 Can the Safety and Health Manager also be the SSHO?

RESPONSE – Yes.

Question 27 EA101-EA106: Is the contractor to assume all ductbank to be demoed is concrete encased, or only ductbank beneath pavements is concrete encased?

RESPONSE – Contractor should assume that all ductbank to be removed is encased in concrete.

Question 28 Specification Section 32 13 14.13 Paragraph 1.1.2.1 states, “The quantity of Concrete will be paid for and included in the lump-sum contract price. If less than 100 percent payment is due based on pay factor stipulated below, a unit price of $300 per cubic yard will used for purposes of calculating the payment reduction.” Should the contractor consider the cost per yard of airfield concrete to be at least $300 per cubic yard excluding 32 01 19 Field Molded Sealants and/or 32 13 73 Compression Joint Seals for Concrete Pavements, so that any potential deductions do not exceed the contractor’s unit price?

RESPONSE – “The $300 per cubic yard of airfield concrete is used to calculate pay deductions of only the in place concrete pavement. Specification 00 41 00 page 1, CLIN 001a - CLIN 001p shall be revised to have an estimated quantity of 1 and a unit of LS. Contractor shall be paid based off the submitted SF 1442 form minus any deductions based on performance in accordance with project specifications.”

Question 29

The faded -E- line for electrical appears to be existing yet on the legend on sheet G1005 there is no identifier for a faded -E line. It calls out -Ex- line as existing. Please provide clarification on what is to be installed for proper quantification.

RESPONSE – It is unclear where the reference to such situation is occurring.

Regardless of symbol included on the line, if the line is shaded it represents existing electrical lines.

Question 30 There is no reference to data on depth for existing utilities in the documents. Can you provide details so we can reference the depths of existing Utilities for excavation safety?

RESPONSE – The existing sanitary sewer is approximately 6’ deep. Water main depths are unknown. Contractor shall field verify water main depth and material prior to relocation. If 3 feet of cover can be achieved with proposed grades, water main shall remain in place.

Question 31 SS 32 13 14.13 calls for 1-1/2” nominal maximum course aggregate. We request a variation to use 1” nominal maximum course aggregate for the paving concrete referenced in SS 13 99 01 paragraph 2.1.i. This is primary due to the amount of rebar in the trough and end boxes. Please approve this variation request.

RESPONSE – For bidding purposes, no waiver will be granted. The Engineer does not have authority to approve waivers. An approved waiver will need to be evaluated by ANG and requires a length of time that is not available at this time.

If after bidding a waiver is still requested, it will be discussed and dealt with at that time.

Question 32 What is the anticipated SF or the partial depth repairs on CLIN 0002AA - CLIN 0003, so the bidding contractors can price the proper quantities?

RESPONSE – All partial depth repairs will be addressed in the field after inspection of milled surface. A price for partial depth repairs will be negotiated once the quantity of repairs has been determined. Contractor shall not include a price for partial depth repairs in their bid.

Question 33 Is there access to allow for placement of perishable materials in conformance with the project specifications?

RESPONSE – Onsite materials storage only consists of the 2 contractor staging areas as defined on sheet GC141. These staging areas are existing grassed areas.

Storage of materials within staging area is up to the discretion of the contractor.

Question 34 What should the KTR anticipate for wait time for access for deliveries?

RESPONSE – Time required varies based on workload of personnel. Typical access time is fifteen minutes. Drivers who make repeated deliveries to base need to be added to an Entry Authorization List to expedite entry. Delivery of time sensitive material (like asphalt) needs to be coordinated with the COR in order to minimize delivery delay.