Questions_and_Answers_combined.pdf

Contract Name: F-35 Weapon Load Training

EIELSON AFB, ALASKA

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

1. Specification section 101400.20 – Interior Signage describes the general requirements. This section does not give specific details or sizes for interior signage. The drawings do not have a signage schedule or signage details. Please provide an interior signage schedule and details. Will a signage schedule be issued for bidding?

A: Interior design and signage was not included in the SOW. Section 101400.20 was provided as a convenience to the AF and can be removed at their direction.

2. Specification 22 00 00-3.1.7.1 states “Piping subject to vertical movement when operating temperatures exceed ambient temperatures shall be supported by variable spring hangers and supports or by constant support hangers.”

Please identify a) locations where these hangers are required and b) selections for these hangers.

A: This section does not apply to this project because domestic water piping is less than 2 inches in size.

3. Please clarify the requirements for air compressor AC-4.

Specification 22 15 14.00 40-2.2.2 states that the air compressor shall be rotary-screw type.

Sheet P-601 indicates that the air compressor shall be a simplex unit with two 15 hp motors.

a. A rotary screw air compressor would have only one motor.

b. The Schedule may be describing a two-stage reciprocating air compressor in order to achieve 100 cfm @ 150 psig.

A: Provide a 30 HP Rotary screw compressor with a single motor.

4. On drawing A-106, at rooms Bay 1-101 and Bay 2 – 102, indicates the floor finish as EPX-1. On drawing A-602, under the Interior Materials Legend Abbreviations, it lists EPX as Epoxy Paint. However, in the finish schedule on drawing A-602, it lists the floor finish for rooms 101 and 102 as Conc-1, which is identified as Exposed Concrete. Which is the correct floor finish for rooms 101 and 102? And does the existing need to be removed and prepped for recoating?

A: Provide epoxy finish for Bay 1 and Bay 2. Prepare in accordance with specification 09 67

23.15.

5. The project specifications include the section 321311 – Concrete Pavement For Airfields and Other Heavy-Duty Pavements. The specification section describes the requirements for concrete Airfield and apron paving. The project drawings do not include any civil drawings and the drawings included do not indicate any work outside of the exterior wall of the building. Is there any work required outside of the exterior walls of the building?

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

A: Any new concrete floors inside the building within 10’ of the wheel lines of the aircraft are considered airfield pavement per 32 13 11.

6. The project drawings do not include any civil drawings and do not include a vicinity map showing the location of this building. Please provide a site plan showing the project location and the approved haul routes from the base main gate to the project site.

A: See Vicinity Map in attachments

7. On drawing A-101, demolition note D20 calls for the demolition of a portion of the concrete floor slab. From the architectural building sections, it appears that the existing floor slab on grade in the hangar bay is thicker that the slab in other areas between grid lines 1 and 2. What is the existing floor slab thickness in the hangar bay? What it the required reinforcement for the replaced slab on grade areas in the hangar bay?

A: AF to provide original drawings to determine thickness and reinforcing.

AF A: The concrete slab is an unknown thickness.

8. On drawing D-102. Demolition note D13 calls for; “Demo platform, disconnect and remove mechanical equipment”. There are three platforms indicated on this drawing. Please provide details / as-built drawings of the construction for these platforms.

A: AF to provide.

AF A: As-Builts provided

9. On drawing A-141, demolition note D33 calls for the removal of a parapet along grid line A. The note describes the removal of C channels between columns and to cut down and remove 5 ea. steel columns. The demolition note does not state what the parapet framing is sheathed with, and there is no detail section cut indicated thru this parapet. What is the height of this parapet? Please provide further information concerning the construction of this parapet such as a section detail cut, or as-build drawings and details.

A: AF to provide original drawings to allow contractor to determine existing construction.

AF A: This is an error in omission of design. As-builts provided.

10. On drawing A-501, detail A1 shows column corner guards, CG-1 typical, see A-601. On drawing A-601, there is no reference to “CG-1”. Please clarify.

A: Revise the detail reference to “A-602”.

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

11. On drawing A-401, the enlarged toilet rooms and vest. Plan B1, shows wall type 2 on grid line A at Office 120. However, wall section A4/A-303 shows wall type 3 at this location. Which is correct?

A: Wall Type 2 is correct.

12. On drawing A-103, at Storage Room 103, a new wall is shown with note #2 and identified as 8” CMU. Note #2 calls for infilling an existing wall opening and to match existing construction. This work is not shown on structural drawing S-101. Is there an existing footing at this location to support the new CMU wall, or is a new footing required per detail A1/S-501?

A: Footing is existing.

13. On drawing A-101, at grid line 1 between grids A.3 and A.6, it shows demolition note D25. This note calls for the demolition of a sectional door, track, motor and hardware. On drawing A-103, at the location described above, it shows sheet note #02, which calls for “Infill wall opening, match existing wall construction”. On drawing A-401, floor plan B1 shows detail C4/A-501 at the edge of the wall opening to be infilled. This detail shows the existing vs. new wall construction at an exterior wall infill. However, it does not show the structural framing for the wall infill. All that is shown is a full thickness wall of rigid insulation. What is the required wall structural framing at an exterior wall infill location?

A: 13. The existing wall framing is C8x11.5 perimeter framing around the existing opening (AF-

39-04-35, sheet 17 of 47, ref S-4, NORTH ELEVATION). Infill to consist of (2) new horizontal

C8x11.5 to match the existing girt elevations (4’-0” & 7’-9” AFF). Connect the new C8 girts to the existing C8 jamb posts with an L5x3x5/16 x 0’-4” long, welded to each piece with 3/16” fillet all around (AF-39-04-35, sheet 19 of 47, ref S-6, DETAIL 6). Provide blocking as needed to connect exterior and interior finishes to girts (AF39-04-35, sheet 10 of 47, ref A-5, SIDING

JOINT DETAIL 4). Infill spaces between girts and exterior studs with rigid insulation per C4/A-

14. There are wood doors listed on the door schedule (sheet A603), but there is no spec section for wood doors. No spec section for wood doors is even listed in the table of contents. Please advise

A: Concur. Add Specification Section 08 14 00 – Wood Doors (forthcoming).

15. Specification 22 00 00 Table II allows galvanized steel, black steel, or copper tube piping systems.

Specification 22 15 40.00 40-2.3.1.1 requires either black steel or galvanized steel piping systems.

a. Is a copper tube piping system acceptable?

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

Specification 22 00 00-2.3 requires ball valves to conform to MSS SP-110.

Specification 22 15 40.00 40-2.2.3.1 does not reference MSS SP-110.

One sentence states that ball valves will have “stainless ball and stem”. The next sentence states that ball valve balls and stems will have “hard chrome plating finish”. Which is correct?

A: Copper tube is acceptable for compressed air. Provide ball valves with stainless steel ball and stem.

16. Please clarify the following: Sheet M-602, Steam Safety Relief Valve Schedule:

a. SV-1 setpoint should be 30 psig.

b. SV-1 capacity should be at least as great as the maximum capacity of the two pressure reducing valves; this results in a size of 4” x 6”.

c. SV-2, SV-3, SV-4 are unnecessary; these valves are not required by Code and are a waste of money. Valve size for the scheduled capacity would be 4” x 6”. Note that there is no connection on the shell of the heat exchanger for this valve.

A: New HXs and piping accessories are rated at 125# or higher. 100 psi set pressure at SV-1 results in a smaller valve. Since SV-1 also serves the existing HX-2 and its associated piping and we don’t know what pressure class all those components were rated at. To be conservative, revised SV-1 to 30 psi set pressure, 4070 lbs/hr, valve size 3”x4” based on Spriax Sarco model

SV73. SV-2, SV-3 & SV-4 are not required and are removed from the contract requirement.

17. Please review and clarify the requirements for steam trap ST-1.

a. The Steam Trap Schedule on sheet M-602 shows ST-1 to be an inverted bucket trap.

b. Eielson AFB HVAC Standards do not allow bucket traps.

c. This trap should be either a thermodynamic steam trap or a 125 psi float & thermostatic trap.

A: ST-1 is revised to a F&T steam trap, 125 psi, minimum capacity 100 lbs/hr, drip leg height

24”, orifice size 1/8”, connection size 3/4”.

18. Section 01 11 00 1.3 states the government will occupy premises during entire period of construction. Please confirm this building will be occupied during construction.

A: AF to provide answer.

AF A: Depending on construction timeline, building may or may not be occupied.

19. On drawing S-204, the Framing Elevation Grid A appears to show new concrete footings at grid lines 4.2 and 3.2. These are not shown on the foundation plan on drawing S-101. Also, on S-204, at grid line 2, it appears to show new footings on both sides of the existing footing. However, on

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

S-101, it only shows a new footing on one side of the existing footing, per detail C1/S-510. Please clarify.

A: All three footings referenced are along Grid A’. All are existing.

20. On drawing S-101, 2 ea. new HSS10 x 10x ¼” columns are indicated along grid line 2 between grids B.6 to C. This drawing does not indicate new footings for these columns. Please clarify.

A: Ref C3/S-521 (as indicated in the label), which shows the footing is per A1/S-510, which shows the footing is a 2’x2’x1’ concrete footing.

21. On drawing S-102, existing and new mezzanine framing is shown between grids B.6 and C. At grid line C and approx. grid 2.7, a new HSS3 x 3 x 3/8” column is shown. This column is also indicated on drawing S-101 – Foundation plan. However, a new footing is not shown for this column. Please clarify.

A: Provide new footing per A1/S-510.

22. Specification section 026113 – Excavation and Handling of Contaminated Material, part 1.2 states, “The work consists of excavation and temporary storage of approximately 60 cubic yards of contaminated material”. The project drawings do not show any work outside of the exterior walls of the building, except a small area of new concrete sidewalk shown on drawing S-101 along grid line C. The only excavation shown on the drawings is for several new concrete footings located inside the building. Please provide a revised description of work for the above referenced specification section, or provide additional drawings which define the location and extend of this excavation work.

A: AF to determine if 60 cy is excessive and revise as necessary.

23. Please review and clarify the requirements for steam valves.

Specification 23 22 26.00 20-2.1.7 requires bronze valves or steel valves. The Eielson Air Force Base Standards require Class 150 steel valves and/or Class 800 forged steel valves for high pressure steam and condensate service. Flanged valves may be all Class 125 cast iron (all iron, no bronze trim) for low pressure steam and condensate service.

A: Delete bronze valves from Section 23 22 26. Provide steel valves only.

24. On drawing S-101 it shows 2 ea. housekeeping pads at the Fire Pump room near grid line C. On drawing A-103, it also shows 2 ea. new housekeeping pads at the Fire Pump room, but these are

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red) different sizes than the ones shown on drawing S-101. Which drawing has the correct sizes for the house keeping pads at the fire pump room?

A: See Sheet F-401 for housekeeping pad quantity and locations in fire pump room. Sheet A-103 references structural. Sheet S-101 references coordination with FLS.

25. On drawing S-204, between grids 2 and 3, the following note is shown; “Infill (E) door opening with metal studs.” This note is also shown on drawing S-101 at this location. On drawing A-103 at this location on grid line A, it has sheet note #02, which states to infill wall opening, match existing construction. On enlarge floor plan B1/A-401, the wall infill is drawn as a concrete wall.

Is the wall infill construction to be with metal stud framing per the notes on the structural drawings, or as concrete as shown on B1/A-401?

A: Infill with metal studs per structural drawings.

26. On drawing A-602, the finish schedule list paint P-1 as the finish for all walls in rooms 101–Bay 1 and 102–Bay 2 (hangar bays). However, for the ceiling of these two rooms, it lists EXP (Exposed Structure) as the finish. Is it the intent that the exposed roof metal decking, roof structural steel trusses and support structure and all mechanical and electrical items attached to the roof structure are not to be repainted? What are the ceiling materials for rooms 101, 102, 104, 108 and 114B?

A: Revise Finish Schedule on A-602. Exposed ceilings in Room 101 and 102 to have P-1 finish.

Delete room 104 and 108 from the schedule. Room 114B to have P-1 finish.

27. The structural drawings show multiple locations where new structural steel is welded to the existing structural steel. Has a lead paint survey been done by the Government to determine if lead based paint is present on the existing structural steel?

A: Not to our knowledge. AF to verify.

AF A: Surveys provided. Note – not all areas of the building were surveyed. If areas not surveyed and are disturbed during construction, the contractor will be required to complete survey and sampling for lead-based paint in those areas

28. The existing structural steel through the building appears to be coated with a layer of dust/dirt. Has a hazardous material survey been done by the Government to determine if this dust/dirt contains lead?

A: Not to our knowledge. AF to verify.

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

AF A: Surveys provided. Note – not all areas of the building were surveyed. If areas not surveyed and are disturbed during construction, the contractor will be required to complete survey and sampling for lead in those areas.

29. On drawing A-101, demolition note #23 states, “Demo insulation and interior metal panels…” What is the type of existing insulation at this location? Is it the intent that the existing insulation will be removed and reinstalled at this location, or is the existing insulation to be replaced with new?

A: Existing insulation is understood to be rigid. Intent is for replacement of insulation to match existing. AF to provide original drawings for as-built verification.

AF A: As-builts provided

30. Section 00 01 15 List of Drawings paragraph 1.3.1 reference drawings lists as built drawings for the building. I am unable to find these drawings. Please direct me to these drawings or please provide.

A: AF should provide as-built drawings.

AF A: As-builts provided

31. Sheet A106 seems to point us towards epoxy floor (EPX-1) for the hangar bays, the finish schedule on sheet A602 has clear concrete for the floor finish. Are we just place epoxy on the areas that we place new concrete in the hangar bays? Please clarify the extents of epoxy in the hangar bay.

A: Provide epoxy finish for Bay 1 and Bay 2. Prepare in accordance with specification 09 67

23.15.

32. Please provide an anticipated NTP date so we can develop a schedule for the project to help with our pricing efforts. We need to understand what work will be taking place during what time of the year (for instance the roof) to determine if temporary heat and cover will be required.

A: AF to provide if possible.

AF A: NTP issuance can only occur after award which is dependent on when funding is received for this project.

33. Section 22 00 00 1.2 Submittals has requirements for detail drawings for the entire plumbing system. Since this is already a designed project, are these drawings required?

A: Coordinated shop drawings are required.

Contract Number: FA5004-19-B-A006 Project Number: FTQW 18-0209

Questions and Answers (answers in red)

34. Section 22 15 14.00 2.1 System Description and 2.1.1 Design Requirements describe installation drawings and performance data. Since this is already a designed project, are these required?

A: Coordinated shop drawings are required.

35. Section 23 00 00 1.4.4 Detail Drawings has requirements for detail drawings for the entire duct system. Since this is already a designed project, are these drawings required?

A: Coordinated shop drawings are required.

36. Section 23 21 13.00 1.4.2.1 Report of Prior Installations describes backflow preventers but is listed as a subsection of 1.4.2 Welding. Is this section required?

A: Delete this requirement. It does not apply because all heating is fed from a glycol feeder.

37. Section 23 22 26.00 2.1.8.1 Steel Piping c. Butt Weld Joints calls for the use of backing rings.

Backing rings are no longer industry standard. Are backing rings required?

A: Submit alternate welding methods for approval prior to fabrication.

38. Stamped engineered drawings are provided (S-801 through S-803) detailing the seismic requirements. Is it necessary to perform these calculations a second time according to Section 22 05 48.00 1.3 System Description?

A: Yes, Provide engineered drawings based on the actual coordinated installation shop drawings.

39. Several areas are calling for vinyl wainscot per 09 70 20. This specification is missing from the project spec’s. Please provide this specification.

A: No references to 09 70 20 are intended. Specification information for fiber reinforced wall coverings can be found in specification section 10 26 00.

40. Specification section 081113 – Steel Doors & Frames, Part 2 – Products, lists 2.1 – Standard Steel Doors, part 2.1.1.1 – Heavy Duty Doors, part 2.1.1.2 – Extra Heavy Duty Doors, and part 2.1.1.3

– Maximum Duty Doors. The door schedule on drawing A-603 does not identify what door classification is required for each door. What is the required door classification for each door listed in the door schedule?

A: Section 08 11 13 – Steel Doors and Frames, make the following changes:

1. Paragraph 2.1.1.1 Heavy Duty Doors, change the last sentence to read as follows: “Provide

Level 2 doors unless noted otherwise.”

2. Paragraph 2.1.1.2, Extra Heavy Duty Doors, change the last sentence to read as follows:

“Provide Level 3 doors at new interior egress doors including stairwells, interior vestibule doors, and doors across corridors and hallways.”

3. Paragraph 2.1.1.3, Maximum Duty Doors, change the last sentence to read as follows:

“Provide Level 4 doors at new exterior doors including exterior doors to mechanical rooms.

Contract Number: FA5004-19-B-A006

41. On drawing A-503, detail A3 has a portion of the existing exterior wall and the existing WF beam shown with dark shading. What does this dark shaded area represent?

A: Drafting error, disregard shaded area.

42. On drawing A-503, detail A4 shows the existing exterior wall and parapet with a wood nailer under the new parapet cap. Is this wood nailer existing or new? The other parapet details on this drawing (A1, A2, A3) do not show a wood nailer like detail A4. Is this correct?

A: Provide wood nailer at all parapet conditions.

43. Please confirm if firestopping is to be applied both sides of the wall per detail C1/A-503. There may be inadequate access to effectively apply firestopping due to proximity of existing roof steel.

A: Confirmed, firestopping is to be applied on both sides.

44. On drawing A-502, detail A1 shows a suspended ceiling projector mount. The projector is identified as Government Furnished Contractor Installed (GFCI) but the projector mount is not identified. The specifications do not include a section for a ceiling projector mount. Is the projector mount GFCI? If not, please provide specifications for the ceiling mount.

A: The projector is specified in section 09 51 00, paragraph 2.7.

45. Specification section 072116 – Mineral Fiber Blanket Insulation, part 2.4, specifies the requirements for a vapor barrier. The drawing details show locations for existing and new vapor barrier. New vapor barrier is shown only at exterior wall locations where new work is occurring. The specifications also include section 072710.0010 – Building Air Barrier System. Detail C4/A-501 shows the exterior wall infill detail. This detail does not show an air barrier at the new or the existing exterior wall construction. Is a new air barrier required at the new exterior wall construction at infill locations?

A: Delete Section 07 27 10.00 10 from the Specifications.

46. Section A1/A-402 indicates a wall type 5 between the stairs and the Fan Room at the mezzanine level. Plan views of the stairs do not appear indicate any new walls at this location. Please clarify.

A: Provide Wall Type 5 as drawn in detail A1.

47. Please confirm mezzanine walls between fan room and Bays terminate and connect at bottom of existing joist structure as shown on A1/A-302 and are not required to extend to roof deck. Stair at Vestibule 107 similar.

A: Confirmed for Fan Room 127. Stair at Vestibule 107 to be constructed as drawn on sheet A- 402.

Contract Number: FA5004-19-B-A006

48. Please clarify 1 hour horizontal assembly indicated from grid A to A.6 + on sheet G-103. There is a one hour ceiling indicated above Hall 1148 but no other rated assembly locations in this area. Ceiling type 2 for rooms in this area is not a rated ceiling. Spray fireproofing is applied from A.6 + to west of B.3 only per A-123. Is additional type 1 ceiling required in this area or is this location not required to be rated ?

A: Detail A1 on sheet A-301 illustrates the upper existing ceilings to remain. The existing cast-in-place concrete ceiling between Grid A and the edge of Hall 114B has an equivalent fire-resistance rating as well as the upper ceiling and walls of Room 112. New penetrations through these areas must be appropriately sealed with firestopping.