Amendment 007 - Pre-Bid RFI responses.pdf

Amendment 007 Contents

Pre-Bid RFI Responses (Final set of Answers to Questions prior to Deadline)

Attachment 001: Supplemental information for RFI 006 (photos and paint)

Attachment 002: Supplemental information for RFI 092 (photo of roof pavers)

Attachment 003: Supplemental information for RFI 098 (Revised TOC 110, Spec 57300 Ornamental Railing, revised dwgs A560,A610, A611 and A631

Attachment 004: Supplemental information for RFI 128 (Spec 102600 and revised

TOC)

Attachment 005: Supplemental information for RFI 137 (Dwgs TY010 and TY601)

Attachment 006: Supplemental information for RFI 177 (Spec 55100 Metal Stair, also see drawing A560)

No Question Response 1 Spec 312000-3.21-A calls for the Contractor to engage an independent Geotechnical

Engineering Testing Agency to perform field quality-control testing. This is in direct conflict with spec 014533, which states the Owner (GSA) shall employ and pay for a special inspector (or inspectors). Confirm spec 014533 governs and Geotech inspection is by GSA.

See Amendment 006, RFI #2 response

2 Reference A020 & A621Material ID GMB-1 states the markerboards to be 4x6.

Details 16 & 20 on A621 show markerboards to be 8’x4’. Please clarify dimensions

Marker boards to be 4x6, refer to I204 series for locations where there are multiple boards side by side.

3 Is there a drawing which shows the location of the telecom room on the 3rd floor?

Detail 3 on TN601 show 25-pair cables from the 4th floor telecom rooms to the 3rd floor.

3rd floor drawing provided in Amendment 004

4 Please confirm there are there are no requirements for sound masking on the 1st floor. The specifications call out the first floor but the floor plans do not show anything.

Correct, no sound masking required on first floor.

5 Reference 072700 - Air and Moisture Barrier. The drawings only show self-adhering sheet membrane (AB 1). Please say if there is any fluid-applied membrane (AB-4) required for this project.

(AB-1) and (AB-4) are both is the spec in case it is needed by the GC. – (AB-4 ) is not anticipated and can be omitted as it is not called for in the drawings.

6 Reference 102219 section 2.2 – B 3a. states “Color: TR-E Smoke to match 3rd floor installation – as selected by architect from Manufacturer’s full range.” Can a sample or picture be provided in order to match color options?

Colors will be selected with submittals during construction. New metal panels (factory paint) and touch-up paint for stair towers should match existing stair color (smoke/off white). Any touch-up to exterior wall is a 2-part epoxy tan color. See Attachment 001 for photos of stair and wall color and paint used on the wall.

7 Drawings M909 to M914 indicates the BAS work on the 5th & Roof Levels are an Add Alternate. On the bid form, all of the BAS work is considered part of the base bid cost in the PEB 4th floor fit-out. Please clarify which is correct?

See response to RFI #54.

8 Detail 7 on TN501 indicates the cable will route from the telecom outlet to above the ceiling; however, the cable tray is under the floor. Please confirm all cable will route under the raised floor with the exception of the wireless access cabling?

Yes, the intent is to all telecommunication cabling except WAP cabling to be routed under raised floor.

9 SF 1442 bid form unit prices for fireproofing (Types 3, 4 & 5) and firesafing (Types 1 & 2) gives you a unit count to assume but doesn’t provide the size of the patch per unit. Please provide the size of the patches to assume for these activities.

Review Study in Appendix A of Specification (Volume

3) for reasonable size assumptions. Section 012200:

Unit Price FSA1 is for existing wall penetrations, assume 8” diameter; On GOO4, Unit Price FSA2 assumes openings 12” x 12"

10 Detail 8/A060 denotes that "contractors option to extend studs to structure per detail C". However, there is no detail C on A060. What detail C is this note referring to?

delete note in cafeteria set. Provide bracing and slab attachments per G002

11 The cafeteria demolition keynote 10 on A201A states "Existing door pinned closed part of 4th Floor Renovation Scope. See DWGS from that package for more information. However, we are unable to find any reference to this scope further on the 4th Floor drawing set. Can a page number or note number be referenced or the scope for this door be explained in greater detail?

See drawing 1 of A500 and RFI 143

12 On the cafeteria drawing set, page A261A has a sheet keynote 1, but this keynote is not shown on the drawings. Is the entire area on this page applicable to keynote 1?

Delete Keynote 1 from sheet A261A of cafeteria set.

13 Specification 283111_2.8 provides information in relation to Air-Sampling Smoke Detector Systems (VESDA). Drawing FA204B indicates an ASSD Panel within the HUB/TELE Room 4051, but no additional information is provided. Please advise on the design intent for the indicated ASSD panel.

The intent of the air sampling smoke detection system is to provide early warning of smoke in Hub/Tele 4051.

14 Per the Room Finish Schedule on drawing A090, the Elevator Lobby (room 410C6) is scheduled to receive terrazzo tile TERT-1. However, on drawing I204C the TERT- 1 is shown to only partially cover the Elevator Lobby. Please confirm that our price should include TERT-1 for the entire Elevator Lobby.

No. Existing elevator lobby floor is not replaced. Room 410C6 will be existing to remain floor finish and base, Refer to Drawing 1204C for Extent of TERT-1

15 Please confirm demountable doors are to be single glazed aluminum framed doors as shown on door schedule A080 and demountable door frame detail 7 on I410 as they are shown as DWS-2 on the elevations which Is described as a wood full lite door on specification page 102219-3 2.2C. If they are to be wood, please advise on what type of veneer Is to be provided as the specification says to match WD-1, which Is not listed in the architectural woodwork specifications 064000 or the material Identification codes A020.

Demountable doors to be glazed with 1/4" laminated glass, powdercoated aluminum rails and stile, not wood

16 Doors are listed as wood glazed (WD-1). There is no WD-1 in section 64400 or any other section. The doors on the 3rd floor are metal glazed doors. Should we match existing?

See response to RFI #15.

RichardAFrattarelli Typewritten Text RFI Technical Responses Amendment 007

17 Drawing TN501: The details for wall devices are all showing conduit routed from the box to cable tray in the ceiling. However, drawing TN304 shows J-hook pathways above the accessible ceiling, with cable tray installed below the raised floor (per Drawing TN204). Please confirm that there is no ceiling tray to be installed above the accessible ceiling.

There is no cable tray above the accessible ceiling. J-hook pathways will be used above accessible ceiling as required

18 Drawing TA602: Details indicate a Touch Panel – Type 1, however the Touch Panel

– Type 1 is not specified in Specification Section 274116. Please advise on the make and model of the indicated Touch Panel – Type 1.

See response to Amendment 006, RFI #6

19 Specifications 274116_1.8C: Indicates the small conference rooms are to receive an assistive listening system. Floor plans do not indicate this system nor is it shown on TA602, detail 3. Please confirm if an assisted listening system is required. If required, specifications 274116_2.10A(1-7) indicates the small conference rooms are to receive independent assistive listening systems as opposed to a shared system. Please confirm this is the design intent of this system.

See response to Amendment 006, RFI #9

20 Specification 275119: Sound Masking Equipment is not specified for the sound masking system in section 275119. However, drawing TS501, detail 1 calls out a speaker make and model. Detail 5 shows the signal flow drawing for the system and includes amplifiers, DSP and a network switch. None of these devices are specified on the aforementioned documents. Please provide details as to the preferred make and model.

See response to Amendment 006, RFI #11

21 Specification 275119_1.4B calls for sound masking on the first floor, but the floor plans do not indicate sound masking on the first floor. Please confirm there are no requirements for sound masking on the first floor.

See response to RFI #4

22 Drawing TA501 (Cafeteria): Details 4 and 5 indicated hardware and rack required for A/V systems, but the location of this rack is not shown on the floor plans. Please provide A/V system rack location.

See response to RFI #236

23 Specification 274116_2.7 (Cafeteria): indicates required rigging hardware for speaker clusters, but does not provide product information of the speaker clusters.

Please advise if speaker clusters are required.

See response to Amendment 006, RFI #87

24 Drawing TS501: Details 4 and 5 indicate a sound masking rack and associated system equipment, but specification section 275119 does not provide product information associated with the rack/equipment. Please advise.

See response to Amendment 006, RFI #11

25 Specification 274133: indicates the requirement for CATV systems, but there are no marked locations on the floor plans to show required CATV locations. Drawing TA602, Detail 1 (line diagram) and Drawing TA603, Detail 2 (riser diagram) indicate CATV at all displays. Please advise if CATV systems are required at all new display locations or if the requirements are only to be at specific locations.

CATV is required at all new display locations and as noted on the TA 600 series drawings

26 Please advise if telecom cables are to route to telecom rooms 49C1, 43C3, 42C24, and 410C2 or if all cables will be required to route to the MDF.

See response to Amendment 006, RFI #5

27 Drawing TA602: Details 3 – 6 indicate an equipment rack at WP4. Specifications call for equipment racks to be housed either behind the display or under the conference room table. Floor plans TA204(A-D) indicate racks to be installed behind the display.

Please confirm installation of the WP4s behind the displays is the desired intent and not to house racks under furniture.

See amendment 6 RFI 22

28 Are the demountable doors wood or aluminum? Spec section 102219 calls out WD-1 wood doors and references spec section 064000 for the WD-1. However, spec section 064000 does not define WD-1 (it only defines WD-5 and WD-6). If the doors are wood, what should the finish code be? On the other hand, the door schedule on plan sheet A080 indicates the door finish is clear anodized.

See response to RFI #15

29 The door schedule on plan sheet A080 references glass type GL-1T (½” clear tempered glass) for the doors. This glass thickness typically occurs in frameless glass doors. However, the doors are framed (not frameless) doors. What should the glass thickness/type be in the demountable doors?

GL-2T--¼” tempered glass is acceptable is typical framed doors.

30 What should the glass type/thickness be for the butt-glazed demountable wall glass panels (type DWS-3 in spec section 102219)?

(GL-1T) ½” tempered glass

31 Spec section 102219 mentions DWS-1 for solid demountable wall panels. However, the plans do not appear to have solid demountable wall panels. Please confirm.

No solid demountable wall panels used, can omit

32 Spec section 102219 indicates DWS-1 solid walls are to be STC 45, DWS-2 doors are to be STC 30, and DWS-3 glass walls are to be STC 32. The door schedule on plan sheet A080 also indicates the doors are to be STC 30. However, General Note C on plan sheets I404A – I405D indicates the wall system and doors are to have an STC rating of 33. Which STC ratings are correct?

Solid demountable walls are omitted from this project.

Typical glass doors to be minimum STC 30 and typical glass walls to be minimum STC 30

33 Details 1 and 2 on plan sheet A630 and detail 8 on plan sheet I410 show acoustical sealant and wood blocking. Please confirm whether or not these are required to be part of the demountable scope or if these are by others.

These are by GC or GC's sub.

34 Please confirm for the demountable butt-glazed walls that the manufacturer’s standard dry seals and tape connection is approved and that silicone is not required.

Silicone joints are required at butt glazing

35 What should the trim finish be for the demountable doors (DWS-2) and demountable glass panel walls (DWS-3)? The door schedule on plan sheet A080 indicates the frame finish is clear anodized. However, spec section 102219 parts 2.2, D., 1. and 2.2, F., 1. both indicate “Color. As selected by Architect from manufacturer’s full range.”, which appears to indicate some sort of powdercoat finish.

Powder coat painted finish to match 3rd floor color to be field verified.

36 Specification Section 274116 specifies Cable and Wiring in detail; however, the TA- Series drawings do not illustrate any connectivity as part of the menu display system. Specification Section 274116 part 1.8 states that “The menu software and hardware will be provided and installed by others.” Please confirm that all cabling and the terminations required for the cafeteria menu displays are not part of the audiovisual contractor’s scope and are not to be included. If they are to be included, please provide a schematic line drawing illustrating the required connectivity.

See response to RFI #85

37 Audiovisual Line Diagram drawing TA602, detail #2 illustrates multiple ceiling microphones and multiple HDMI connections being made to the VTC Codec Type 2. Specification Section 274116 Part 2.7 specifies the VTC Codec as part of the Video Teleconferencing Equipment. The specified Type 2 codec does not have the appropriate quantity of connectors to accommodate the connectivity that has been illustrated. Please clarify the functional line drawings and provide a revised line diagram and specifications as needed.

The ceiling microphones shown are the Polycom ceiling mic kit included in 274116 2.7. Since the Polycom 500 unit only has one HDMI input, then only one video output from the video switcher can be sent to the codec. No revised line drawing will be included in this response. We will provide a revise drawing if required after the project is awarded.

38 Audiovisual Line Diagram drawing TA602, detail #2 illustrates a minimum of three (3) HDMI output connections being made to the Presentation Switcher Type 1. Specification Section 274116 Part

2.4 specifies the Presentation Switcher as part of the System Switchers/Controllers/Routers/Receivers. The specified Type 1 presentation switcher does not have the appropriate quantity of connectors to accommodate the connectivity that has been illustrated. Please clarify the functional line drawings and provide a revised line diagram and specifications as needed.

There are (2) DM outputs and (2) HDMI outputs. The third HDMI input that is shown going to the VTC codec is not required per the response for RFI #37.

39 Spec 013100-1: Please confirm security package and systems are by SSA security per note under General Project Coordination.

Complete security systems are to be provided and installed by the security contractor as part of this project.

40 Spec 271100-2 and drawing TN401: Who is responsible for the (FRT) plywood backboard in the Telecom rooms?

GC or GC's sub.

41 Spec 271513 and TN Series drawings: Please confirm all horizontal voice and data cables are terminated in room 4051 and no racks/cabinets are required in telecom rooms 49C1, 43C3, 410C2 and 42C24.

All horizontal cabling terminates in 4051.

Racks / cabinets are not included for rooms 49C1, 43C3, 410C2 and 42C24

42 Spec 271313 and drawing TN601 Copper Riser Diagram: How are the (2) 25 pair Cat5e cables being terminated in the 3rd floor telecom rooms?

Cat5E cables between 3rd floor telecom and 4th floor telecom rooms are understood to be existing. Field coordination will be required.

43 Spec 271313 and drawing TN601 Copper Riser Diagram: What is the purpose of the cross connect point in each 4th floor TR for the 25 pair cable that is being routed to HUB/TELE 4051 and is it required?

The cross-connect and cabling from each of the “corner” TRs to HUB/TELE 4051 is a requirement from the owner.

44 Spec 271513-10 C. Communication Equipment Room Ladder Rack System and drawing TN401: No ladder rack is shown on drawing TN401 over the equipment frames. Is ladder rack over the equipment frames required?

No overhead ladder rack is required in HUB/TELE

45 Spec 271513-12 3.8 Installation of Cable #10: Please confirm that 10’ of slack is only required in the equipment room and not on each end of the cable.

10 foot service loop is required on the equipment room end only.

46 Spec 271513-14 3.11 Labeling H. Cable and Wire Identification: Is labeling each exposed cable in cable tray and wire troughs at intervals not exceeding 15 feet required for this project?

No. Disregard requirement in spec 271513 – 3.11 / H.3

47 Drawing TN401: Is the 12U equipment cabinet in office G80 existing? No. It is a new equipment rack that will be provided and installed by the Telecom contractor.

48 GSA Clarification: Sheet A080, door schedule, G75A is a "custom" fabricated concealed aluminum door, frame, and aluminum panel system. Painted to match recent exterior paint project. Hinges are concealed.

Sheet A080, Schedule: Door is a custom Aluminum door, not a typical HM to eliminate potential metal incompatibilities. Dimensions are approximately 39" x85" high, but must be confirmed by GC in the field.

Exterior paint color to match exterior paint color. Interior paint color to match interior color scheme. From notes, "metal plate" is actually 3/16" aluminum interior and exterior face sheets attached to door. Sheet A101A, note 22: Metal panels are not to be salvaged, provide new. Doors of this type were recently replaced and AMCO Metal Products provided the custom doors and the underlying door was a 1-3/4" Kawneer Flushline insulated door. Ensure flush top cap to prevent water ponding and ensure bottom seal works with frame/threshold system for proper weather closure/seal. Provide new frame (properly reinforced), rain drip, door sweep, ABAAS compliant threshold and weather stripping. Provide a 10-year warranty. For this door, hardware set 200.05 BPW clarified as follows:

Include 4 concealed SOSS type hinges (other doors used IVES A72 91105F pivots, satin finish), Allegion Von Duprin 99 Rim series Exit device with latch bolt, XP (extra protection), EO (no outside trim). Provide closer with hold open stop for for food deliveries.

Provide other security items as specified. Regarding exterior paint, a 2 part epoxy was recently used on the existing weathered exterior panels; Tnemec V69/V69/F Hi-Build Epoxoline II, Epoxy and 1072V Fluoronar Fluoropolymer. We believe "new" exterior aluminum door panels were initially painted with Sherwin Williams Pro-Cryl universal primer and top coated with Pro Industrial Acrylic. We are not sure if the doors were then over-painted with the Tnemec products, but that is the current color to match. Provide a proper exterior aluminum primer and paint.

49 PEB Cafeteria specifications do not include any sections for Division 31 or 32. Detail 2 and Detail 5 on plan sheet A470 indicate Division 31 and 32 work. Are we to use the PEB 4 th Floor Upgrades & Infrastructure Division 31 and 32 specifications for similar work under the PEB Cafeteria portion of the project, or are separate specifications going to be provided?

Please use the 4th floor civil specification as applicable for the cafeteria project site work.

50 PEB Cafeteria spec section 00 80 00 Supplementary Conditions, item 1.4.A notes that the PEB is operated 7 days/week / 24 hours/day / 365 days/year. .Item 1.4.B states that construction period operating hours shall commence no earlier than 6 AM and conclude no later than 6PM, Monday through Friday, with extended hours and weekend and holiday hours able to be requested in writing. Item 1.4.C details several construction activities that shall be performed during “Government Unoccupied Hours”. If the Building is operated 7/24/365, please provide specific times that constitute “Government Unoccupied Hours”.

Regular constuction hours shall be 6 am to 6

pm. Other times must be requested and approved.

51 Please reference 4th Floor Fit Out Drawings. Drawing I204A shows corner guards, WGC-1, at all major wrapped columns. Drawings I204B, I204C and I204D do not show corner guards on similar wrapped columns. Please confirm all typical columns are to receive corner guards, like as shown on I204A.

Remove corner guards from main building grid columns on sheet I204A

52 Air Zone International is an air handling unit manufacturer that specializes in low sound applications and unit builds that match the project specifications closely. Can Air Zone International be added to the list of acceptable manufacturers in Part 2.1-A for the above mentioned spec sections provided they meet the full design intent of the project?

See response to Amendment 006, RFI #16

53 The grease interceptor is shown on C109 referring to the plumbing drawings. The Cafeteria plumbing drawings P100A & P200A say for reference only and refer to the 4th Floor project. The 4th Floor Plumbing drawings do not show the grease interceptor. There is no Specification for the grease interceptor. Please provide additional information for pricing of the new grease interceptor including specification, equipment schedule and details.

The grease interceptor is shown on 1/P400. Grease Interceptor Basis of Design is as follows: 1250 gallon precast concrete Grease Interceptor based on Oldcastle Precast Model #GI-487, 4’ x 8’ x 7’ deep. Unit shall be provided with 6” walls, (2) chambers,

(2) 30” manhole frames, risers and covers, and a vent. Space for the interceptor is tight. Any other Interceptor dimensions will have to be reviewed by Plumbing and the Civil Engineer in advance.

54 Drawings M910 thru M914 refer to an ADD ALTERNATE #2 but the Bid Form and other documents do not reference an Add Alt #2. Please confirm that there is no Add Alternate #2 and that the Building Controls upgrades for the PEB, Security Building and Utility Building should all be include in the BAS Line Item for the PEB 4th Floor Fit-out Base Bid.

Correct. All BAS efforts are a part of the Base Bid. There is no Alternate 2.

55 Please reference Level 04 Drawings: S206 and 9/A480. Please provide size of the new angle frame that is to be anchored onto the roof slab at all four openings.

Engineered curb adapter or angle frame to be designed and provided by mechanical contractor. Opening dimensions to be confirmed and coordinated with mechanical ventilator.

56 Drawings S010, S011, S012 and S013 show new 30' long structural beams being installed in the ceilings of the 5th floor Mechanical Rooms. Since the 5th floor is still occupied, please confirm these beams can be brought and sections and spliced together. Currently there is now other way to get the new beams into these rooms.

Splicing beams is acceptable. Splices to develop full strength of the beam.

57 Drawing C109 shows the existing grease trap outside the footprint of the new stairwell. Drawing P400 shows the existing grease trap within the footprint of the new stairwell. Which drawing is correct?

Both are correct. Drawings C109 and P400 show the location of the proposed grease trap interceptor in the same location. P400 notes the approximate location of the existing grease trap interceptor to be removed and refers to the Civil drawings for the specific location. See Sheet C102 Demolition Plan – North keynote 3 for the exact location of the existing grease trap interceptor to be removed.

58 Please confirm the owner will be supplying the camera licenses for the Qognify VMS? 29. In the specification CAM2 is a 180° camera (Axis P3807-PVE) but on the drawings CAM2 is a 360° camera (Axis P3717-PLE). Please clarify which camera is correct for CAM2.

The CAM2 for the cafeteria is a 360 degree camera.

CAM2 is also a 360 degree camera for the 4th floor.

59 Drawing TA602, detail 3 indicates a Touch Panel, Type 1, however a Type one touch panel is not specified in section 274116. Please advise on make and model of preferred touch panel.

See response to RFI #18

60 Specifications 274116, pages 5 – 6, detail C, indicates the small conference rooms are to receive an assistive listening system however, this is not shown on the supplied drawings, TA602, detail 3. Please confirm if an assisted listening system is required for this space.

See response to RFI #19

61 The assumption with the specified assisted listening system is that each space is to receive its own system as opposed to a shared system. Please reference specifications 274116, pages 26 -27 details A1-7. Please confirm.

See response to Amendment 006, RFI #9

62 Please confirm if the Table Pockets and Cable Cubby as indicated on drawing TA602 details 3 – 6 are the Table Interconnect devices as indicated in section 274116, page 24 detail D.

See response to Amendment 006, RFI #10

63 Reference section 275119 – Sound Masking. Equipment is not specified for the sound masking system in section 275119. However, drawing TS501, detail 1 calls out a speaker make and model. Detail 5 shows the signal flow drawing for the system and includes amplifiers, DSP and a network switch. None of these devices are specified on the aforementioned documents. Please provide details as to the preferred make and model.

See response to Amendment 006, RFI #11

64 What level of BIM modeling is required, RFI # 8 says to utilize BIM but does not specify a LOD (level of design). Does this requirement apply to the entire project? IE Full model of everything before we start work?

BIM model will be provided upon award. Current level at end of design is 300 and at end of construction will be 300. Refer to COBIE specifications for contractor input. BIM Parameters worksheet, BIM Execution Plan, and SSA BIM Requirements document provided upon award and to be refined at project meetings.

65 Raised floor bonding. What are the bonding requirements, every 1000 SF? This is typical.

This is acceptable for all contractors

66 Please provide an AIC rating for Substation A (cafeteria power feed). AIC rating for substation A is 50kAIC.

67 Where is the main Lutron Quantum Hub located at? Quantum Hub is located on 3rd Floor, Telecom 3031.

Directly below Telecom 4031.

68 Please provide AIC ratings and Make for panels, ACP 44A, ACP 41A, ACP 42A, ACP 43A, RP2W4, RP5N4

AIC ratings for panels ACP-44A, ACP-41A, APC-42A, and APC-43A are 25kAIC; RP-2W4 and RP-5N4 are 22kAIC.

69 Is EMT acceptable in Mech rooms or is GRC (galvanized rigid conduit) required as the spec indicates?

EMT is acceptable.

70 Short Circuit study: is this for the entire system or just new work? New work per specifications.

71 Please confirm UL listed Firestop is required? All firestop will be UL listed.

72 EPO control panel, is this by the EC? Do we have a BOD? E600 The fire alarm system just supervises (no control) the EPO switch. It matches what was done on the 3rd floor.

We do not have an EPO panel. Only an EPO switch is required.

73 Where is the building FACP located? The Fire Alarm Control Panel is located on the 1st Floor in the ECCC as shown on Sheet FA201C.

74 BAS system work with, on other floors, does this have to be off hours?

Disconnection and reconnections.

Final coordination of interruptions of occupied floors to be coordinated with owner. Premium time is required for this effort unless GSA/SSA advises otherwise.

75 How would SSA like to see the underfloor cable tray mounted, on kindorf (strut) 1 ½ above floor acceptable? IE concrete floor, then kindorf direct mounted, then cable tray on the kindorf. Or does it need to be elevated to 6” below top of raised floor?

Cable tray on 1.5” strut is acceptable; however, field coordination for crossing other utilities is required.

76 Should we price an underfloor cable tray for power as well, running right next to the tele/data tray? To separate power from LV? With a second tray, would emergency need to be run in a separate tray? Otherwise please specify a mounting method for the new MC cables, currently these are laying right on the ground.

Cable tray is not required for underfloor power. EMT to JBox, furniture provided whips to partition furniture systems. All LV cables shall be in dedicated trays – separated from electrical conduits or cabling. Refer to electrical for installation of electrical cabling.

77 Please advise the manufacturer name and model number for the new 480V/3P/100A circuit breaker shown being installed in Keynote 1 on E011 for more accurate pricing.

Square D.

78 Reference section 102219 Demountable Partitions section 2.2.C specifies (DWS-2), Doors are shown as wood veneer (WD-1) and reference Spec 064000 but there is no WD-1 indication in that spec. The door schedule sheet A080 calls for AL-FG door for this demountable type. Please clarify door material as wood veneer glazed or full glazed door with aluminum finish (AL-FG)?

See response to RFI #15

79 Door to conference room 4205 shows 1.02 G as the hardware type on Door Schedule sheet A080, where all other conference rooms show 175.3 G. Please confirm if this is correct?

See response to Amendment 006, RFI #38

80 Reference section 102219 Demountable Partitions section 2.2.A calls for the Basis of Design to match 3rd floor installation. Hayworth Lifespace Era wall system line has been discontinued. Please clarify if an alternative Hayworth line can be provided that meets the performance requirements listed in the specifications.

Yes Substitution can be provided if it meets performance requirements and design intent.

81 Reference section 102219 Demountable Partitions section 2.2.B specifies (DWS-1) Solid Panels. Only demountable glass fronts are shown on the elevations. Please confirm that no solid paneled walls are required for the demountable partitions.

See response to RFI #31

82 Detail 4/AG100 sign type S.10 "The Bistro" shows to be illuminated. Please confirm this is the only illuminated sign message out of sign types S.1 thru S.10.

Confirmed.

83 Will the new copper riser consist of two (2) 25 pair Cat 5e from the four 3rd floor TR’ s to existing TR’s on the 4th floor in addition to the two (2) Cat 5e 25 pairs from each 4th floor TR?

See response to Amendment 6, RFI #29

84 Reference 274116 Audiovisual Performance Systems - Section 1.12.A can mandatory pre-bid site visit be waived since an additional site visit is not possible?

Site visits were allowed on 11/12. A site visit is required prior to production of shop drawings. As a reminder, not visting the site visit is not an acceptable excuse for change orders.

85 Specification Section 274116 specifies Cable and Wiring in detail; however, the TA- Series drawings do not illustrate any connectivity as part of the menu display system. Specification Section 274116 part 1.8 states that “The menu software and hardware will be provided and installed by others.” Please confirm that all cabling and the terminations required for the cafeteria menu displays are not part of the audiovisual contractor’s scope and are not to be included. If they are to be included, please provide a schematic line drawing illustrating the required connectivity.

Cabling and wiring is included for menu boards See Amendment 6 RFI 30

86 Audiovisual Line Diagram drawing TA602, detail #2 illustrates multiple ceiling microphones and multiple HDMI connections being made to the VTC Codec Type 2.

Specification Section 274116 Part 2.7 specifies the VTC Codec as part of the Video Teleconferencing Equipment. The specified Type 2 codec does not have the appropriate quantity of connectors to accommodate the connectivity that has been illustrated. Please clarify the functional line drawings and provide a revised line diagram and specifications as needed.

See response to RFI #37

87 Audiovisual Line Diagram drawing TA602, detail #2 illustrates a minimum of three (3) HDMI output connections being made to the Presentation Switcher Type 1.

Specification Section 274116 Part 2.4 specifies the Presentation Switcher as part of the System Switchers/Controllers/Routers/Receivers. The specified Type 1 presentation switcher does not have the appropriate quantity of connectors to accommodate the connectivity that has been illustrated. Please clarify the functional line drawings and provide a revised line diagram and specifications as needed.

See response to RFI #38

88 Specification Section 274116 for PEB - Cafeteria Expansion calls part 2.3.A calls for 55” Flat Panel Display however note on detail 1/TA501 calls for 32" flat panel.

Please confirm correct Flat panel display size. 24. Unit Prices No. 6 and 7 listed in specification section 012700 do not currently match the price schedule. Please clarify the correct quantities

The NEC V554Q 55” displays are required. There are five “MS” locations shown on the TA102.

89 Will the menu software and hardware provided by others need video signal extension to be included in the AV pricing?

Yes. Connection is part of this Project.

90 Within the specifications for division 27 (271513-8 and 9), there is a call out for shielded and un-shielded cable for AV locations. Drawings have TA1 & TA2 locations designated for AV. Is shielded cable or un shielded cable required for AV technology locations?

All Cat6 cable used for transporting video signal shall be shielded.

91 Atlas Sound masking – Spec section 275119. Please confirm overall requirements for sound masking. Spec’s call out Atlas emitters with different manufacturers for amplifiers, power supplies, etc. Atlas head end equipment will not comply with “the alarming application provides a means to identify, annunciate and log alarm conditions" under section H 1”. Please confirm requirement

Please the specified equipment listed in the Specification 275119 Sound Masking

92 ALT 0001 - Roof Plan (drawing A011) calls for new concrete roof pavers but no specification was provided for these pavers. Please provide a specification for this work.

Manufacturer is unknown. They are gray precast concrete pavers. Keynote #5 to be modified: "New concrete pavers to match existing. Path widths to match existing--or minimum of 36" which ever is greater. Attachment 002 provides a photo of existing roof pavers.

93 Please confirm that fireproofing patching that will be required for new steel tie-ins, pipe hangers, duct hangers and other work activities that will disturb the existing fireproofing is not covered by the fireproofing related unit prices and allowance quantities indicated on the bid form breakouts, spec 012200 and drawing G004 are required

Confirmed. All fireproofing associated with the GC's new work will NOT be included in the allowance. It should be included in the base bid. See general notes E and F on G004.

94 Can a make and model number for the sewer lift station be provided, so that we can price out the sewer lift station?

Clarify reference to sewer lift station. Not sure where this is found in the documents. Grease interceptor information provided as part of RFI 53

95 Drawings unclear; are panels on E602 to be fed from bus plugs? No– wireway is shown for taps to panels.

96 NX1 and NX1E fixture types have conflicting symbols on the drawings. Please issue corrected lighting drawings showing which symbol associates with which fixture type so that we may give vendors accurate counts.

See prior amendment revised lighting drawings

97 Is Superior Essex Cable and Ortronics hardware an approved equivalent in place of the Hubbell telecom cable, hardware and equipment?

Yes, subject to all applicable requirements.

98 Please provide the location(s) of the Ornamental Railing (ORN RAIL-1 and ORN RAIL-2) as described in spec section 05 73 00 Ornamental Railings.

ORN RAIL 2– Refers to Handrails noted by Keynote 1 on A204A-D. ORN RAIL 1 will be used at locations where wall mounted is not possible, per detail 2/A631 See revised drawings A560, A610, A611 and A631.

Attachment 003 provides revised drawings and specifications.

99 Please confirm that the Handrails noted by Keynote 1 on A204 are the Ornamental Handrails described in spec section 05 73 00 Ornamental Railings.

See revised drawings A560, A610, A611 and A631 and revised Ornamental railing section. See also, RFI #98

100 Reference 232113.1.3.A - Please clarify what the minimum working-pressure ratings are for underground hydronic piping, Hot and Chilled Water piping. The specification has 2 psig ratings for each pipe.

The minimum working pressure shall be 100-psi. The testing pressure shall be 150-psi.

101 The CHW/HW piping is being installed on an existing system which will require that the system is drained for the final connection. Please provide the location of the nearest street valves and a profile of the existing pipe system so that volumes can be calculated.

No valves on site have been observed in record drawings or in the survey. Bidders shall assume the nearest valves are located within the buildings and that is where the line will need to be isolated. No record profile is available.

102 For the hydrostatic test it is assumed that the new pipe should be tested independently from the existing system, this means that two connection pieces will be required which will result in two untested welds. Is it acceptable to have these welds radiograph tested?

Yes it is acceptable for the welds at the connection points between proposed and existing to only be radiograph tested, not hydrostatic tested. All welds, not just those at the connection points, shall be radiographed tested.

103 The specifications require that all joints be exposed during hydrostatic testing. This pipe is being installed as deep as 16’ and due to the layout will require joints roughly every 20’ meaning that most, if not all of the excavation would need to remain open for the duration of the installation and through the testing process. It is not recommended that we keep the excavation open for this duration. We request that the joints be completed, sealed and backfilled during installation with the hydrostatic test being completed at the end. Please confirm that the joints can be completed, sealed, and backfilled prior to testing.

It is acceptable to backfill the pipe prior to performing the hydrostatic test; however, if the tests yields a deficiency, then the Contractor shall be required to excavate and correct the issue.

104 Specification 264113, section 3.4 indicates the need to perform inspections required to obtain UL Master Label Certification for the lightning protection system. Please advise if only the modified portion of the system is to be inspected or if the entire existing system will need to be included in the inspection to meet project requirements.

Inspection will be required for as much as the system as required for UL Master Label. Specification is performance base, including testing.

105 Drawing A304C, Note 5 indicates "GS to carefully remove and reinstall the existing metal slat ceiling for sprinkler work." Does SSA have attic stock material to replace the existing metal slat ceiling if needed. Or is it known if the existing ceiling material is still available to purchase? Due to when the ceiling was originally installed, it may not be feasible to match existing.

Damaged slats will need to be repaired or replaced.

SSA does not stock this item.

106 Specification section 013100, 1.7 Utility Service Interruptions indicates "Contractor to provide fire watch services during any sprinkler/fire alarm impairments during occupied hours and unoccupied hours." The sprinkler piping will be removed as part of demolition of above ceiling work and remain out of service for many months. While we can provide fire watch with on-site staff during regular work hours, there will be a significant expense to provide fire watch after hours during the week, on weekends, and holidays. The exact amount of time of the outage cannot be accurately defined at this time as it depends on other components that will need to be worked out with the awarded contractor and coordinated with GSA/SSA/Hill. Please indicate an allowance for fire watch that can be included by all competitive bidders and will be adjusted once it is determined what the actual fire watch requirement will need to be.

This will all depend on contractor phasing and sequencing of work therefore the Government cannot dictate a number that should be included

107 Specification section 003100, 1.3 Geotechnical Data indicates "Any party using soil information described in this Section shall accept full responsibility for its use and for obtaining additional soil information which may be required." A competitive bidder for this project would not have any way of knowing if additional soil testing would be needed. This could only be determined after the required test pits are performed and all data is evaluated. Please indicate an allowance for possible additional soil testing or indicate that if determined that additional soil testing is needed, the costs incurred will be reimbursed to the contractor through the change order process.

The costs incurred will be reimbursed through a change order if needed

108 Please confirm that only inside construction activities that produce noise greater than 65 dB will have to be performed after-hours (6pm-6am). Or will this decibel limit apply to exterior construction activities as well?

Outside construction activities that produce noise greater than 65 dB within the PEB Building will also need to be performed after hours

109 Please advise the required minimum BIM Level of Development (LOD) prior to the start of construction. LOD 100, 200, 300, 350, 400, or 500?

See response to RFI #64

110 Section 3.4.A.2 states "Micropiles may be constructed using core drilling, rotary drilling, or auger drilling." Will rotary percussive drilling methods be acceptable?

Other drilling methods are acceptable, based on the design by the contractor’s professional engineer, provided they do not cause unacceptable vibration in the immediately adjacent occupied building.

111 The plumbing plan shows the drain line for K5 freezer running out of the box behind the coil then back inside the box at the corner. Can this all be ran inside the freezer?

Yes, the drain should route within the freezer then exit near the NW corner.

112 Drawing TN601: Detail 3 is indicating (2) 25 pair CAT5e from the 4th floor Telecom Rooms from the 3rd floor Telecom Rooms. Please advise if these pairs are existing.

Cat5E cables between 3rd floor telecom and 4th floor telecom rooms are understood to be existing. Field coordination will be required.

113 Drawing E011: Keynote #1 indicates a new 15a circuit breaker in the panel to be provided for the unit heater. Please advise on the required manufacture and model number.

Square D QOD or NQOD

114 Specifications do not indicate grounding and bonding requirements for raised access flooring. Please advise.

See response to RFI #65

115 Drawing E011 (Cafeteria): Please provide the AIC rating for Substation A for the cafeteria power feed.

See response to RFI #66

116 Drawing E530: Lighting Controls Intent Note #1 indicates that total building lighting control shall be distributed by Lutron Energy Saver Node. Please advise on the location of the Lutron Quantum Hub.

See response to RFI #67

117 Please provide AIC ratings and make for panels: ACP 44A, ACP 41A, ACP 42A, ACP 43A, RP2W4 and RP5N4.

See response to RFI #68

118 Drawing E600: Detail 4 indicates an EPO. Please provide the basis of design of the

EPO.

See response to RFI #72

119 Please clarify if MC cables for power are to lay on the ground as existing or if a mounting method is desired.

See response to RFI #76

120 Please advise if the required short circuit study is for new work only or is required for the entire system.

See response to RFI #70

121 Specification section 087100, Section 2.10 Keying indicates new locks and cylinders to be keyed to the existing system. Please confirm the existing key system manufacturer and keyway?

087100, 2.10, A. requires the G.C. to confirm the existing key system and keyway, the third floor used a BEST Interchangeable core 7-pin key system, to be confirmed with SSA during construction

122 Please provide the following additional information regarding the existing BAS system. The existing control drawings, DDC points list, sequence of operation, existing valve capacities, and the existing damper sizes.

This information can be provided to the successful Offeror once a Contract is awarded

123 Please advise the extent of the new BAS design intent in relation to existing equipment/devices. I.E.; existing valve bodies and dampers, raceways, enclosures, control end devices (relay current switches, freeze stats, sensors), and wiring.

Provided existing equipment is in good condition, is re-using existing equipment allowed or is the intent to demolish the existing system and install new?

Intent is for control components to be upgraded from pneumatic to DDC. Dampers, valves, etc that are still functional can remain with new actuator only.

124 Please advise if BAS work meeting the noise threshold requirements and VAV control retrofits can be performed during occupied hours.

BAS work meeting the noise threshold and VAV control retrofits can be performed during occupied hours

125 Drawing A 101A, is the CMU wall begin demolished to expand the kitchen area load bearing? If it is load bearing, what means of structural stability will be required?

It is not understood to be load bearing.

126 Are the furniture systems pre-wired or does that wiring have to be completed in the field? Also, how do the furniture partitions connect to each other electrically?

Furniture is pre-wired

The SA01 6x6 cubicles are physically attached together structurally, the cubical workstation electrical systems is connected at the base of each cubicle, the electricity is interconnected within the furniture framing by internal electrical system that plug into one another with a whip.

The under floor electrical whip provide enough electrical house power to the base of the No#1 designated cubical, under floor electrical whip provides enough electrical power to supply electrical power up to 8 cubicles. SSA’s Furniture Contractor installs all cubicles and connected the electrical house power whips, then test all work station receptacles.

127 Do the furniture systems come with whips? If so, who is responsible for making that final connection?

the government will provide the whips for the furniture.

The contractor is responsible for connecting the whip a part of thi project. Final onnection to furniture systems is by the furniture vendor.

128 Please provide specifications for the following: WGC-1, WGC-4, and WGC-5 on A011 , A020

See revised specification section 102600 for the Cafeteria Project. Attachment 004.

129 WCG-1 and WCG-2 are not listed in the material identification codes, although WCG-1 appears numerous times in the 4th floor drawings. Please confirm WCG-1 is to be provided as indicated on the plans I204A , I204B , I204C , I204D for the 4th floor project, Typo in the Mat ID on Sheet A020. "WGC" should be replace with "WCG". Section 102600 has (WCG-1) specified.

130 Specification 1012813 - 3.4, A & J calls out BA-2 and US-2 specialty items, but these have not been found on the plans. Please confirm if BA-2 and US-2 are required on this project, and if so please provide locations and quantities.

All janitors closets on 4th floor and in cafeteria need BA-2 mop and broom holder and US-2, utility shelves

131 Specification 102813 - 3.4, D states that MIR-1 sizes are indicated, but are not indicated on the plans A600 , A601 , A602 , A604 , A605 , A606 or Specification '102813 - 3.4, D. Please clarify.

MIR-1 sizes are from top of molded counterop to bottom of light fixtures and the length of the countertops as shown in sink elevations. See drawing 4 on A606.

132 Please confirm that there are no exterior signage required on this project.

Specification 101422 - 3, 2.1, C calls out exterior signage, but it has not been located on the plans.

No exterior signs are required for this project

133 Please confirm if the roofing is assumed to contain ACM. The roofing has been assumed to contain asbestos until the material can be sampled prior to actual disturbance. The roofing is anticipated to be impacted under Alt 001.

134 Please confirm who is to provide additional environmental testing of the roofing material.

Any sampling of suspect asbestos-containing material during the contract will be performed by the Governments Industrial Hygienist or as assigned by the Contracting Officer.

135 Please confirm that the only fireproofing repair / patching in the base bid is per the allowance table with quantities shown on G004. There are various other mentions of fireproofing repair through general notes on multiple drawings (i.e. J/A201A, L/A010 to A/204D, etc.), although these notes do not provide locations or quantities.

Note that this RFI is only for repair/patching, not the new fireproofing which is required for the stairs.

Patching and repair of unknown EXISTING conditiions will be allocated to the allowances included in the base bid. See report in appendix. Fire proofing and firesafing for NEW work is part of the base bid and will NOT be allocated to the allowance. Quantities for allowance purposes will be coordinated and finalized after demolition.

136 Please provide a fireproofing allowance table for the Cafeteria if applicable. There have been no quantities in the documents to adequately price.

See response to Amendment 004, RFI #5

137 Drawing TY010 is labeled as "Alternate Roof Security", is all of the work shown on this page part of Alternate 001 or is stair 6 and 7 work to be part of the base?

The design intent that is shown on TY010 should be listed as Alternate 001. See Attachment 005, revisions to TY010 and TY601.

138 Is the GC responsible for carrying the Elevator integration for new work or is that work going to be contracted direct with the Owner? If the GC is to pick up this work, who is the Elevator vendor?

See response to RFI #151

139 Please confirm the quantity of New Fire Hose Cabinets, and also the quantity of Relocated Fire Hose…