Q_ _A_12_Aug_16.pdf

Questions and Answers Widen Txwy F & North Arm/Pad - CURZ152809 Widen Txwy D & South Arm/Pad - CURZ152810

Repair Aircraft Parking Apron - CURZ152811

1. Do small businesses need to submit a subcontracting plan?

A. No. Subcontracting Plan only required of Large Business Offerors as stated in Solicitation Section 00100 item 13.

2. May the bids be mailed?

A. No. See Solicitation Section 00100 item 6 for Bid Instructions. No fax or emails will be accepted because the bid bond must be an original and have a raised seal.

3. Will bids be opened and read aloud at the bid opening?

A. Yes. See Solicitation Section 00100 item 6 for Bid Opening details.

4. Will the Government make known to all bidders other companies intending to bid that were not present at the pre-bid?

A. No. The government does not know or have a list of bidders. The FBO.gov solicitation does have a tab for interested suppliers. This might provide a source of information.

5. Where in the plans is the existing pavement thickness identified?

A. Existing Plan Sheets provide this information.

6. Is this where sheet piling is used against the runway? (Questioned posed during Pre-Bid while reviewing existing site at end of Taxiway “F”) A. Yes.

7. Do all vehicles need to be escorted? What is the inspection timer per vehicle?

A. See Specification Section 01 11 00 1.9.2 Access to Base.

8. Are there specified disposal areas?

A. None Specified.

9. The Contract plans depict threshold displacement on the north and south of the 15/33 Runway in conjunction with the new construction of Taxiway "F" and Taxiway "D". This will require removal of existing pavement markings on the 15/33 concrete surfaces and the installation of new markings to displace the landing threshold. These temporary markings will subsequently need to be removed when the threshold is returned to original location.

BTV typically has required the use of high pressure water blast (40,000 psi) with vacuum pick up of paint debris for all removal of existing markings on their paved surfaces. This is done with truck mounted equipment. (Stripe Hog is one of the manufacturers of this type of equipment).

Will the use of high pressure water blast removal and vacuum pick-up be required for the work on the 15/33 runway? Will it be required for removal in other areas of this project, or will grinding be allowed?

A. High pressure water blasting removal techniques will be required for any remarking efforts affecting BTV runway and pavement surfaces with regard to the displaced thresholds. Typically, other marking areas are fully self-contained within the VTANG lease limits and would be removed by demolition of associated pavements. Exceptions may include any marking associated with the temporary taxi lane/tow way prior to the NTP of Phase III. Contractor should assume that any temporary markings applied to existing pavements which are intended to be removed anyway may have markings removed by grinding as necessary. Any marking removal from new pavements placed during the completion of this project shall be water blasted.

10. With reference to the attached Plans #E-604, for both Taxiway F and Taxiway D, the L-886 Base Cans are requiring two different Rings for the fixture to mount on. We just want to clarify that they are to be different.

Taxiway “F” is showing the use of a ¾” Flange Ring w/ pavement dam, and Taxiway “D” is showing the use of a Snow Plow Ring for Style 3 fixtures.

Please confirm if this is correct.

A. All flush-mounted lighting and base cans shall be installed per the snow plow ring style/method.

11. Can you please confirm whether Aircraft Public and Passenger Liability insurance is required for this project? The Special Contract Requirements 06/16, Part 1 General, 1.1 Insurance, states (if applicable)?

A. Aircraft Public and Passenger Liability insurance IS NOT applicable to this project.

12. The plans show a compression seal expansion joint along the Building (B2 Joint).

Normally this is a field molded joint material at these type of locations because there is no room from the Compression seal installation machine. Please verify that a compression seal along the buildings is intended.

A. The use of field molded joint material at the expansion joint along building interfaces with new pavement is acceptable.

13. In section 32 13 73, Para 2.2 (Page 4) they state that the uncompressed comp. seal should be 0.75" or 1" and expansion Joint should be 1.25". Then in the plan sheets under preformed compression seal notes (Pavement Joint Details pages), the width of the uncompressed seal shall be 1/2" to 5/8" for contraction & construction joints.

Can we get this clarified as to what size comp. seal is? I believe you are looking for a joint reservoir size of 1/2" to 5/8" but want to verify A. The plan values are correct – uncompressed seals shall be 1/2” to 5/8” for contraction and construction joints. Uncompressed seals for expansion joints shall be 3/4".

14. Enclosed please find page 8 of Specification 32 11 23. This is the GBAC specification. It appears that Sieve No. 4 has been shifted over to the far left of this page and it should be at the far right. Please confirm correct sieves and orientation for this page.

A. The misalignment of text affected gradation No. 4 which was intended to be excluded. Reference paragraph above table which states selecting Gradation 1, 2, or 3. Table below summarizes the date without the confusion of gradation No. 4 which is not applicable:

TABLE 1. GRADATION OF AGGREGATES

Percentage by Weight Passing Square-Mesh Sieve

Sieve

Designation No. 1 No. 2 No. 3

2 inch 100 ---- ----

1-1/2 inch 70-100 100 ----

1 inch 45-80 60-100 100

1/2 inch 30-60 30-65 40-70

No. 4 20-50 20-50 20-50

No. 10 15-40 15-40 15-40

No. 40 5-25 5-25 5-25

No. 200 0-8 0-8 0-8

15. Keyed Note 3, on drawing GC121 references Detail 1/GC501. That detail was not provided. Please provide this detail.

A. Detail is in the Amendment drawing issued 7/27/16

16. Existing condition B series drawings (B-101 – B-105) for Taxiway D, F and Apron identifies areas with section ID and section depth & material information. However, we are unable to find these sections in the set of drawings. Please provide typical sections for existing taxiway D, F and Apron showing thickness of various layers of pavement.

A. see pavement report for pavement sections and boundaries.

17. Reference – Parking Apron.

Existing condition drawings B-101 & B-102 shows two different thicknesses for the existing Parking Apron PCC pavement identified as “A01B/9”PCC and A03B/10”PCC. Please clearly identify on the plans the areas with these thicknesses.

A. Same as question 16.

18. Reference – Taxiway F

Existing pavement section legend “T01A” on existing condition dwgs B-102 & B-103 identifies the pavement to be 4.75”PCC as well as 4.75” AC. Please confirm that this is a typo and the entire length of the Taxiway F is 4.75”AC.

A. Both sections are 4.75” AC

19. Reference – Taxiway F

Existing condition drawing B—102 shows the North Arm/Disarm Pad has 3 different thickness of PCC identified as “T07A/9” PCC” , “A10B/12” PCC” and “A16B, 6.5” PCC”. Please clearly define the limits of the varying thickness areas on the plans.

A. Same as question 16.

20. Reference – Existing Gravel Road

Please provide thickness of existing gravel pavement to be removed.

A. Variable depth gravel pavement, assume 6”.

21. Reference – Temporary Sheet Pile Bracing.

Drawings call for sheet pile bracing along runway edge during excavation. Can you please provide a typical section of existing runway pavement, so the contractor can determine the depth of the required sheeting?

A. Pavement section of the runway has not been verified, however the excavation and backfill for the proposed pavement section on Taxiways Foxtrot and Delta are provided in the construction documents in the Typical Pavement Sections sheet CP-501. The depth of this required excavation would be used to determine the relative depth of embedment of sheet pile bracing to avoid undermining the runway pavements, base and subgrade.

22. Drawing CU103, sheet keynotes 2 calls for replacing 6” diameter sanitary sewer force main. Please provide the depth of the sanitary sewer to be replaced.

A. Depth of existing force main has not been verified vertically – assume currently located at 4-foot depth of cover. Replacement should be at or below the design frost depth of 66-inches and being aware of conflict avoidance with airfield pavement underdrain/subdrainage system.

23. Reference: Taxiway D

Drawings GC 111 - GC114, as listed on the index of drawings on G-002, are missing from the drawing set.

A. Inadvertently left out of bundled drawings set – individual files are attached.

24. Reference Plan Sheet CP 501 from the Widen Taxiway “F” Bid set.

Does the 9” aggregate base course below the HMA shoulder paving on the Taxiway extend outside the limits of the paving? It is typically extended 6” to 18” outside the limits of the HMA.

A. Extends 6” beyond HMA

Does the 20” GBAC extend horizontally past the limits of the binder and surface course of the HMA on the Asphalt Road detail? It is typically extended 6” to 18 “outside the limits of the HMA.

A. Extends 6” beyond HMA

25. Reference Taxiway F & North Arm Pad

Enclosed please find Plan sheet E-001 from The Contract Drawings. The note that is highlighted and circled contains a reference to sheet E-401 for additional information. We could not locate sheet E-401.

Please provide a copy.

A. E-401 reference is extraneous – note should read as follows:

CIRCUIT DESIGNATION TAG FOR BOTH RACEWAYS AND DUCTBANKS; TAG INDICATES QUANTITY AND

DESCRIPTION OF EXISTING OR NEW CIRCUIT CONDUCTORS IN RACEWAY OR DUCT; WHETHER

INDICATED IN THE TAF OR NOT, EACH DUCT CONTAINING AIRFIELD CIRCUITS SHALL BE PROVIDED WITH 1#6G(600V).

26. The specifications reference “fiber optics” We have not located a plan reference for this work.

A. Fiber optic work shown on electrical plans – Sheets E-101 to E-104 issued in amendment 1 dated 7/27/16. Notes reference Existing 24 strand fiber in duct between VTARNG AASF and VTANG B60.

Demolish old fiber and replace with new. Contractor to provide the following in association with this work with limits verified in the field during construction:

- 2,700 LF 4” PVC Duct (direct buried)

- 6 Fiber Reinforced hand holes

- 7,000 LF 4-Way 1” MaxCell Innerduct

- 7,000 LF 12-strand fiber single mode (continuous/non-spliced)

- 2,500 LF 25-pair 19GA Copper

- Line terminating for fiber and copper at both ends

27. There seems to be some confusion on how to apply the L-852T Inset Omni-Directional Taxiway Edge lights to the correct proposal pay item because of the mix of lights per the drawing sets Widen TXWY F & North Arm/Pad, Repair Aircraft Parking Apron and Widen TXWY D & South Arm/Pad. On the Repair Aircraft Parking Apron there are “F” and “D” L-852T Inset Taxiway Edge Lights. To clarify do I apply the number of L-852T Inset Taxiway Edge Lights per drawing set or do I apply all the “D” under TXWY D & South Arm/Pad and all the “F” under the TWY F & North Arm/Pad?

A. Snowplow rings as detailed in CURZ152809 are intended for use in all inset/flush-mounted edge light applications.

28. Please confirm only the L-852T Inset Omni-Directional lights on Project CURZ152809 require a snow plow ring as per drawing E-602?

Please note: Drawing E-604 on Project CURZ152811 and CURZ152810 call for a ¾” Flange Ring.

A. All inset light installations will include snow plow ring installation.

29. Are the existing Runway Distance Remaining Signs, Size 4? Ref: Sheet GC122, note 3.

A. Verifying with BTV but contractor shall assume size 4 unless otherwise notified.

30. Project CURZ152089, Drawing E-502, Detail 2, Pull Can: Please confirm the openings are 2” Threaded Hub @ 0,0,90,90,180,180, 270, 270 with a 2” drain coupling and ¾” offset hole for ground rod? Are anti-rotation fins required?

A. Openings are confirmed as noted. No anti-rotation fins are required but loading rings shall be required.

31. The plan sheets GC- 111/112/113 and GC 122-134 describe the displacement of the threshold to allow connections for Taxiway “F” and “D” into Runway 15/33 please clarify /confirm the following:

31.1 Will the work associated with the displacement of the threshold (paint removal/Pappi work/Paint install) have to be done at night?

A. Pending – BTV Confirmation

31.2 Will the airport be closed for this work?

A. Pending – BTV Confirmation

31.3 Will it be a “hard closure” at 11:30 PM to 5:30 am where no planes can land during that time?

A. Pending – BTV Confirmation

31.4 Will runway closure markers be required?

A. Pending – BTV Confirmation

31.5 Will lighted runway closure X’s be required?

A. Pending – BTV Confirmation

31.6 Will this procedure have to be duplicated for the return to original/preconstruction conditions after the work at “F” and “D” are complete A. Pending – BTV Confirmation

31.7 Can Notams by BTV operations be issued to allow the threshold displacement to done over multiple nights or does paint removal repaint/PAPI have to be done in one night?

A. Pending – BTV Confirmation

32. Project CURZ152811, page CU102, sheet keynote 2 calls for replacing waterline. What is the size and type of pipe to be used? At what depth is the waterline to be replaced?

A. Existing pipe is 12” DIP water main. Depth unknown – assume 4-feet for purposes of bidding.

33. Project CURZ152809, page CU105, sheet keynote 6 calls for capping of existing abandoned waterline. What is the size of line to be capped? What is the depth of the existing lines?

A. Existing pipe is 8” waterline. Material not shown in survey, assuming DIP. Depth unknown – assume 4-feet for purposes of bidding.

34. Project CURZ152809, page CU103, sheet keynote 3 calls for replacing SS manhole. Can you please provide detail for SS manhole?

A. Pending

35. Project CURZ152809, page CG505 shows plan view of UGSWM infiltration gallery F1 which reads 96” perforated CMP (TYP 9). We were only able to locate 6, 96” perforated CMP. Can you please clarify?

A. Correct only 6 Will update callouts to match details

36. Project CURZ152809, demolition plan CD103 shows a subsurface infiltration gallery to be removed in its entirety. Please provide details of this system.

A. Pending - details available to the design team have been included to the extent possible in the documents. We will review existing base data again in case there is something else available to provide to the contractor.

37. Please provide details for proposed underdrain manholes called out on Grading & Drainage “CG” plan series.

A. Pending

38. Will the material excavated be suitable for bedding and backfill? If not, please provide bid items with quantities to be imported.

A. If it meets gradation and other requirements of the specification then yes.

39. The project requires off-site disposal of surplus soil. Is this soil classified as clean material? If not please provide analytical of the soil in order for disposal facilities to determine whether they can accept this material and to properly estimate the cost for disposal.

A. Based on evaluation of materials during design, it is not anticipated that the material to be disposed of off-site would not be deemed as ‘clean’ material. Geotechnical Reports are provided for additional information.

40. XXXXXX would like to respectfully request an extension of the proposal due date by at least two weeks.

A. The Government does not anticipate a bid extension at this time.

41. Project CURZ152809, grading & drainage plan sheets CG101 to CG104 calls for drainage structures “JB G-BP”,” JB F-BP”,”JB E-BP”,”JB D-BP and JB-DD1. However, no details are provided. Please provide details for all the structures referenced above.

A. Pending

42. Project CURZ152809, demolition plan, drawing CD101 calls for demolition of portion of “Taxiway November” PCC pavement. However, existing condition drawing B-101 does not provide any information on the thickness of this pavement. Please provide pavement details to include the base course.

A. Pending

43. Please clarify which runway 15/33 markings will be repainted, and which project phase (D or F) includes this work. Currently phases D and F appear to be in conflict regarding repainting of lines.

A. Pending

44. Phase D plans appear to require that the threshold be displaced to accommodate reconstruction of adjoining taxiway, and then moved back to its original position. However, imagery found on Google Earth shows that the threshold at the east end of the runway is already displaced 500 ft. Since it appears that there is no need to move any runway markings on the eastern half of the runway, can runway markings remain as-is during Phase D?

A. Pending

45. Please clarify which types of markings must be thermoplastic and which can be painted. The plans do not consistently specify.

A. Pending

46. Please confirm the required depth of the L-868B Bottom Section per drawing E-602 on project CURZ152809 Widen TXWY F & North Arm/Pad.

A. Pending

47. Reference Plan Sheet CG 501 Repair Aircraft Parking Apron:

47.1. Can round drainage structures be utilized to accommodate the various pipes entering structures in lieu of the rectangular structure shown?

A. Pending

47.2. Is there a required sump depth required on drainage structures?

A. Pending

47.3. Are the structures show aircraft rated with regards to wheel loads for the structure and the casting?

A. Pending

48. On page 15 of 46 of the solicitation it states: “This solicitation incorporates one or more provisions by reference, with the same force and effect as if they were given in full text. Upon request, the Contracting Officer will make their full text available. The offeror is cautioned that the listed provisions may include blocks that must be completed by the offeror and submitted with its quotation or offer.”

Please provide a document that contains the full text of all of the clauses/provisions that are incorporated by reference. Or at a minimum, please provide a document that contains the full text of all clauses/provisions incorporated by reference that include blocks that must be completed by the offeror and submitted with the quotation or offer. This will help clarify all necessary documents that must be completed and submitted with the bid.

A. Pending

49. Specification 01-01-00.1.4 Work Scheduling states “6AM to 6 PM are normal duty hours. Project CRUZ152809 Sheet GC111 indicates a “Restricted Night time closure construction phase”. Please clarify A. Pending

50. Will the Runway 15-33 be closed by Owner during threshold relocation operations?

A. Pending

51. Will security station a guard at access gate or must contractor furnish gate guards?

A. Pending

52. Underdrain clean out details for the shoulders are furnished. Is there a detail for the cleanouts in the PCC apron?

A. Pending

53. Section 01-45-00.00-10 Quality Control section 3.4 requires a Safety and Health Manager. Please clarify the duties required from the Safety and Health Manager and if this must be a dedicated position.

A. Pending

54. Please specify revetment bin wall details/manufacturer.

A. Pending

55. Reference: Reinforcing steel in PCC pavement.

Paragraph 3.5.7 Placing Reinforcing Steel reads:“Provide the type and amount of steel reinforcement indicated.” Reinforcement Notes 1A on Detail A1, Reinforced PCC Pavement Type R, Drawing CP502 reads:“Reinforcement concrete pavement slabs shall be reinforced with ASTM A1064/A1064M welded wire reinforcement.” Note above Rebar/welded wire reinforcement placement detail as shown on the same detail reads:“See Material Schedule for reinforcement size options.” However, Material Schedule provide rebar size only for Reinforced Slabs Type R with (*) that reads“Welded wire reinforcement will be used for all odd shaped reinforced panels. Oversized panels (25’x25’) will be reinforced with #4 bar mats.”

Please clarify if reinforcing (reinforcing bars and bar mats or welded wire reinforcement) is required for other PCC slabs (for example PCC slabs dim. 20’x18.75’ on Taxiway F) on this project or it is required only for Reinforced PCC Pavement Type R and if answer is Yes, please provide type and size of reinforcement?

A. Pending

56. Reference: Drawing CP502.

Please clarify if reference to Section 32 13 11, Paragraph 2.7 as shown in Material Schedule table on Drawing CP502 for Reinforced Slabs Type R is correct?

A. Pending

57. Reference: Warm-up pad and South Arm Pad on Taxiway D

The existing conditions identify the existing PCC to be reinforced. Please provide the reinforcement details/information to aid in pricing the demolition work.

A. Pending

58. Reference CP501 and Specification Section 31 05 19 Geotextile.

58.1. The plan depicts Geotextile under and over the drainage layer on detail A/4. It depicts it under only on detail C-1 and A/2. Should it wrap top and bottom on all sections?

A. Pending

58.2. The specification indicated that continuously sewn seams are required on joints on slopes steeper than 1 on 4. Will sewn seams be required in all the under drain trenches, or can overlap seams be utilized?

A. Pending