Pre Bid RFIs with Responses.pdf

Pre-Bid Questions and Responses below:

Vendor A

1. Please provide structural roof framing drawings and building sections indicating structural elevations.

RESPONSE: For scaled drawings, print these sheets on 30x42 paper. Verify scale of printed drawings.

C201 - Storm Sewer Plan and Profile S001 – Structural General Notes S002 – Structural Schedules S003 – Typical Foundation Sections & Details S004 – Typical Foundation Sections & Details S005 – Typical Foundation Sections & Details S100 – Structural Foundation Plan S300 – Structural Low Roof Framing Plan S301 - Structural High Roof Framing Plan S600 – Structural Sections and Details S601 – Structural Sections and Details S602 – Structural Sections and Details S603 – Structural Sections and Details S604 – Structural Sections and Details S700 – Structural Roof Framing Details S701 – Structural Roof Framing Details S702 – Structural Roof Framing Details S703 – Structural Sections and Details S710 – Structural Braced Frame Elevations and Details S711 – Structural Braced Frame Elevations and Details L502 – Details – Walkway Canopy to East

2. Drawing A.101: Please identify suspended ceiling elevations.

RESPONSE: The new ceiling is to match the existing finished ceiling height, which is 9’-0” A.F.F.

Contractor is to field verify the existing finished ceiling height in each space for installation of the new finished ceiling at the same elevation.

3. Project Duration

a. Solicitation ( Box 11 and Page 3) identifies Delivery as 180 days from Notice to

Proceed.

b. Statement of Work Paragraph 1.2 identifies the contract duration as 180 days.

c. Specification Section 01-10-00 § 1.03.B states, "complete the entire work ready for occupancy and use not later than 120 days after notice to proceed.

d. Specification Section 01-10-00 §1.04 identifies work period as 10/13/22 through

01/05/23.

e. Specification Section 21-13-13 § 1.3 and 21-13-18 § 1.3 require QFPE review of submittals prior to submission to the Government.

f. Specification Section 21-13-13 § 1.4.1 and 21-13-18 § 1.5.1 require Shop Drawings, Calculations, and Data Submittals to be delivered within 36 days of contract award but no less than 14 days prior to commencing work on site.

g. Specification Section 21-13-13 § 1.4.1.1 requires Shop Drawings to be submitted no less than 28 days prior to start of system installation.

h. Statement of Work paragraph 4 requires all materials on-site prior to phasing start dates.

i. Preparation of Div-21 submittals will require approximately six weeks.

j. Current market conditions indicate six to eight weeks will be required for piping fabrication. Sprinklers and valves may be longer.

k. The work period includes Thanksgiving Holiday and Christmas Holiday were many people add vacation days also.

l. Following is a timeline that shows a 25 day overlap that would impact the start date, and therefore the completion date of the project. The top half of this schedule is moving forward from the bid date. The bottom half is moving backward from the completion date.

m.

(Q) Can Construction Schedule be modified to account for administration, design, and fabrication similar to "Adjusted" column above?

RESPONSE:

3.A. (Response): Submittal Preparation / Deliver (Forty-Two (42) days) and QFPE Review (fourteen (14) days) does not impact the project schedule by 56 consecutive days. Partial submittal for long lead time items is acceptable. QFPE will be allowed seven (seven (7) days) to review submittals 3.B. (Response): Government will be allowed in seven (7) days to return submittals.

3.C (Response): Contractor’s Finish Installation date of 01/30/23 submitted does not comply with the project Scope of Work (SOW) 1.2 CONSTRUCTION DURATION AND PHASING. The Government expects testing and inspection to run into 2023.

The twenty-five (25) day Schedule Overlap submitted by the contractor is accounted for in the discussion above.

4. Qualified Fire Protection Engineer (QFPE)

a. Division 21 Specifications has several references to QFPE.

(Q) Is the QFPE to be Paradign Building Science & Engineering as a Consultant of the Government, a Third Party FPE reporting directly to the Prime Contractor, or two Third Party FPEs subcontracted by the Sprinkler Subcontractor and Fire Alarm Subcontractor?

RESPONSE: The QFPE shall be Paradigm Building Science & Engineering, PLLC as stated.

5. Pipe Grooving

a. Specification Section 21-13-13 §2.2.1.1 states Steel Pipe must be Schedule 10 & 40 only...Grooved pipe must be cut-grooved.

b. Schedule 10 pipe cannot be cut grooved.

(Q) Can Schedule 10 pipe be roll grooved?

RESPONSE: Schedule 10 should be threaded.

6. Wet System Pipe Type

a. Specification Section 21-13-13 §2.2.1.1 states Steel Pipe must be Schedule 10 & 40 only.

b. Drawing FS-2 Pipe Notes states Wet Pipe System Piping Shall be Black Steel Sch-40 only.

(Q) Is Schedule-10 piping permitted to be installed in the wet-pipe system as specified?

RESPONSE: Please see Piping Notes Sheet FS-2, wet-pipe systems shall be only Schedule 40 pipe.

7. Flexible Sprinkler Drops

a. Specification Section 21-13-13 § 2.2.2 identifies Flexible Sprinkler Hose as an approved product.

b. Specification Section 21-13-13 § 3.3.4 does not identify flexible sprinkler drops with the installation of pendant sprinklers.

(Q) May flexible sprinkler drops be installed on this project?

RESPONSE: Yes, approved flexible sprinklers may be used in approved locations.

8. Sprinkler Escutcheons

a. Specification Section 21-13-13 § 2.6.2 identify escutcheons as one-piece.

(Q) May two-piece adjustable escutcheons be utilized on this project?

RESPONSE: Yes, two-piece escutcheon may be allowed for use.

9. Seismic Bracing

a. Specification Section 21-13-13 and 21-13-18 § 3.3.1 states Seismic restraint is [not] required.

b. Drawing FS-2 Fire Sprinkler Note J states, “Support Systems shall comply with seismic requirement of NFPA 13. Provide full lateral and horizontal bracing.”

(Q) Is this building classified as a Seismic Category C or greater, requiring sprinkler piping to be seismically braced?

RESPONSE: Seismic restrain / seismic bracing not required.

10. Test Connection (Specification 21.13.13 § 3.3.11.1)

a. Please confirm backflow preventer forward flow test connection is to be added.

RESPONSE: Yes, scope shall include backflow preventer forward flow test connection.

Please see Detail 5 Sheet FS-4.

11. Fire Department Connection (FDC)

a. Specification Section 21-13-13 § 3.3.13 states to install a wall mount FDC adjacent to the backflow preventer.

b. The Existing FDC is installed remote from the building.

(Q) Are any modifications required for this project regarding the remote FDC?

RESPONSE: No, Remote FDC remains as is.

12. Pipe Painting

a. Specification Section 21-13-13 § 3.5 identifies the color code as Red.

A. Is piping installed above suspended ceiling required to be painted?

RESPONSE: Yes, paint all piping.

13. Pre-Action Releasing System

a. Specification Section 21-13-18 has multiple references to the releasing system including

§ 2.9 and 3.5.1 Releasing Control Unit

b. There are no Div-28 Specifications.

c. Drawing FA-2 Fire Alarm Keyed notes FA1 indicates Existing Fire Alarm Panel to be reutilized.

(Q) Is releasing panel to be reutilized or replaced?

RESPONSE: Please see Keynote FA1 on Sheet FA-2, the existing FACP is to be modified / added to in order to provide all required and necessary suppression releasing functionality.

14. Pre-Action Sprinkler Pipe

a. Specification Section 21-13-18 § 2.2.1.1 states pipe must be Black Schedule 40 only.

b. Drawing FS-2 Pipe Notes states Pre-Action System Piping in Generator Room 116, Batter Room 115 and Lab 107 shall be Galvanized Schedule 10 Only.

c. Drawing FS-2 Pipe notes states Pre-Action Piping in areas other than above shall be galvanized Schedule 40 Only.

(Q) Please clarify which of the above is correct and prevails.

RESPONSE: The “Piping Notes” on Sheet FS-2 provide the most definitive instructions for this unique piping arrangement. The “Piping Notes” shall prevail.

15. Pre-Action Pendent Sprinklers

a. Specification Section 21-13-18 § 2.7.1 states pendent sprinklers must be of the dry pendent type.

b. Specification Section 21-13-18 § 3.3.4.h states Sprinklers installed in the pendent position must be of the listed dry pendent type or on return bends.

(Q) May standard non dry-barrel pendent sprinklers be installed on return bends?

RESPONSE: No, sprinklers in the pendant position shall be listed dry pendant type.

16. Chiller Room 113 (Drawing FS-2)

a. System boundary indicated Chiller Room to be protected with the wet-pipe sprinkler system.

b. Reference piping indicates Chiller Room is protected by Pre-Action system.

(Q) Is Chiller Room to be wet-pipe or pre-action?

RESPONSE: Chiller Room 113 is part of the wet-pipe system. Please provide accordingly.

17. Fire Sprinkler System Legend

a. Is Roof Pitch in Lab 107 considered to be more or less than 2:12?

RESPONSE: Refer to Arch, Structural, As-Builts, etc… for roof pitch conformation.

b. Is remote area to be increased 30% for roof pitch?

RESPONSE: Please see above for roof pitch determination, final system parameters shall be derived from such determination.

c. Is Double-Interlock Pre-Action System remote areas to be increased 30% for dry-pipe system?

RESPONSE: Final system parameters shall be IAW NFPA 13 requirements.

18. Interior Fire Department Connection Piping

a. Site visit identified FDC check valve located in Fire Riser Room (127) and piped to the fire sprinkler manifold located in Chiller Room (113).

b. This main is not indicated on FS-1 Demolition Drawing or FS-2 Installation Drawing.

(Q-1) Is feed main from FDC lead-in to Fire Sprinkler manifold to remain or be removed and replaced?

RESPONSE: Feed main is to remain as is.

(Q-2) Is check valve to remain in Fire Riser Room (127) or be relocated to Chiller Room (113)?

RESPONSE: Check valve shall remain as is.

19. Fire Sprinkler System Manifold (Q-1) Is existing backflow prevention assembly and manifold to be reutilized or replaced?

RESPONSE: The existing backflow prevention assembly and manifold is to be replaced.

(Q-2) Please confirm forward flow test RESPONSE: Forward flow test is required. Please note Detail 5 on Sheet FS-4.

20. Fire Sprinkler Manifold Drain

a. Site visit identified a reduced pressure zone backflow preventer and what appears to be a solenoid actuated valve piped from the manifold drain pipe.

(Q) Is this drain configuration to remain or be removed?

RESPONSE: Noted items shall be replaced with new.

Vendor B

1. Are there any fire alarm devices under the raised floor areas RESPONSE: There were no as-built files available for reference for the existing fire alarm system.

Our site visit did not reveal any devices under any raised floors. Please note that demolition of FA detectors is only in Rooms 107, 112, 114, 115, 116, 117, 118, and 118A.

a. If so, do they need to be included in the scope?

RESPONSE: See response above.

2. Who will be responsible for the disposal of demoed lamps RESPONSE: All lighting lamps are to be collected by the contractor and recycled certificates should be provided to FAA, copies provided to AMP-001, and included in contractor’s monthly waste management reports.

3. Who will be responsible for disposal of ballasts that contain hazardous chemicals, if any are encountered?

RESPONSE: All ballasts that are recovered during the demolition are to be collected and recycled and containerized in a drum provided by AMP-400. PCB ballasts are to be turned in to AMP-100 for disposal as hazardous waste. Coordinate activities with AMP-100.

General Fire Protection

1. Please confirm whether any walls in the facility are fire-resistance rated.

RESPONSE: Design intent is to re-use existing penetrations for the sprinkler piping and associated fire alarm conduits. Any existing fire-resistant sealant removed shall be replaced.

2. Please confirm whether seismic bracing is required on any fire protection system components.

3. Please confirm whether there are any environmental conditions which could cause damage, corrosion, or other negative effects to typical fire alarm or fire sprinkler product materials such that unique materials or damage mitigation measures must occur.

RESPONSE: No such conditions are known.

4. Section 01.91.13 requires “commissioning” of the fire alarm and fire suppression systems. The specifications do not define commissioning authority qualification criteria, do not reference NFPA 3, and do not elaborate on expectations of commissioning compared to the initial acceptance testing requirements of NFPA 13 and 72. Please clarify fire protection systems commissioning expectations.

RESPONSE: Commissioning is not required. Final Comprehensive Testing per NFPA will be conducted for all systems.

5. Section 21 13 13 includes requirements for a Qualified Fire Protection Engineer to review and approve all submittals and maybe to attend testing (presence of brackets suggests that specification author did not reach a decision). Section 21 13 18 paragraph 1.2.6 includes clear requirements for the contractor’s QFPE. There is fire alarm specification section (only the dedicated preaction releasing system criteria of 21 13 18) to dictate fire alarm system QFPE expectations. Must the contractor provide a QFPE to perform the scope indicated in 21 13 18 but also for 21 13 13 and the fire alarm system? Since there is already one engineer of record (Mr.

LaRue), we want to be sure we understand what engineering responsibilities are delegated to the contractor’s fire protection engineer.

RESPONSE: The role of QFPE as detailed in specs 211313 and 211318 are to be fulfilled by Lance LaRue.

6. There is no fire alarm specification section, but the preaction specification (21 13 18) includes many requirements for releasing system-specific components. However, there is no dedicated releasing system in this building. Please clarify which provisions of 21 13 18 are applicable to the fire alarm system.

RESPONSE: Please refer to Keynote FA1 on Sheet FA-2 wherein releasing functionality is to be added to the existing FACP.

Fire Alarm

1. The fire alarm sheets indicate applicable criteria but do not list the edition of NFPA 72, please confirm which edition is applicable.

RESPONSE: The 2019 Edition should be used.

2. The fire alarm sheets indicate applicable criteria but do not include any FAA-specific criteria, please confirm there are no FAA-specific criteria with which the fire alarm system must comply.

RESPONSE: There is no such additional FAA criterion.

3. Sheet FA-2 note A states “fire alarm system layout shown is diagrammatic in nature… equipment and component spacing may differ from the system installed…” and note B states “the contractor shall be responsible for the final layout of the system…” These notes imply that the device layout indicated on FA-2 should be disregarded in its entirety and that it is the contractors responsibility to perform all engineering analysis and associated system layout. If that is not the intent, please clarify the elements of the FA-2 layout with which the contractor must comply. Note that NFPA 72 requires engineering analysis to determine automatic detector layout considering ceiling height, slope, airflows, and other environmental factors impacting fire detection.

RESPONSE: Disagree with the commenter’s assessment. As with all such projects, the contractor’s shop drawings and calculations are also subject to the reviewers and AHJ.

4. 2018 IFC Section 1206 contains many requirements including detection and suppression for electrical energy storage systems. The plans indicate a battery room and UPS room which may require compliance with these criteria. Please confirm the automatic detection and suppression layout indicated in these contract documents includes all features required for the battery hazard.

Please confirm that the contractor is not required to provide any additional engineering analysis to complete the fire protection systems design related to the energy storage systems.

RESPONSE: Full consideration of all such requirements was taken into account. The contractor still needs to provide their own services in order to deliver their own required shop drawings, calculations, etc.

5. NFPA 72 paragraph 7.3.4.2 require the design documents to include ambient sound pressure levels and audible design sound pressure levels. Please provide criteria for audible notification and basis of design ambient background sound pressure levels.

RESPONSE: The basis of such shall be NFPA 72. The contractor shall provide for and prepare their shop drawings, calculations, etc… accordingly.

6. Sheet FA-2 note D requires duct smoke detectors at each air moving device as required by code.

FA-2 indicates some existing duct smoke detectors but does not require any new duct detectors.

Please confirm the indicated layout on FA-2 reflects the location and quantity of required devices.

RESPONSE: Sheet FA-2 does reflect the devices accordingly.

7. Sheet FA-2 note D requires “ALL” fire system components to be the same brand. Please define “fire system components”. Please confirm the intent is just to require that all notification appliances, initiating devices, and power supplies to be Simplex.

RESPONSE: Yes, but such also includes detectors, etc.

8. Sheet FA-2 does not indicate any explosion proof devices, hydrogen detection, or other features sometimes provided for fire alarm systems in rooms handling batteries or large UPS. Please confirm none of these features are required.

RESPONSE: No such features are required.

9. Sheet FA-2 general note B requires compliance with “the specifications” – there is no fire alarm specification. Will a fire alarm specification be provided?

RESPONSE: Such reference is to the corresponding section of 211318.

10. Sheet FA-3 indicates that the riser diagram is for reference only and delegates all engineering responsibility to the fire alarm contractor. Please confirm which elements of FA-3 are contractually binding.

RESPONSE: The riser is for general reference and the contractor shall provide for their own riser.

Their riser shall include all required and necessary items for the project requirements.

11. Sheet FA-2 new conduit & cables note D requires EMT w/ compression or “RGSC” – what is RGSC? I reviewed NFPA 70 and found no such abbreviation.

RESPONSE: The intended reference is for Galvanized Rigid Steel Conduit.

12. Please clarify where surface-mount fire alarm conduit is permitted.

RESPONSE: Surface mounted fire alarm conduit is permitted in current fire alarm pathways and mounted to walls in available space immediately below the roof structure.

13. What are expectations for painting or factory-applied color of new fire alarm conduit?

RESPONSE: All new fire alarm / detection related conduit shall be red.

14. Must all new fire alarm wiring be in conduit?

RESPONSE: Yes.

15. Must any existing free-air fire alarm wiring be moved into conduit?

RESPONSE: If such is associated with demo’d or new FA devices or appliances then it should be properly addressed. If not, then it would not be within the project requirements.

16. Is carbon monoxide detection required?

RESPONSE: No.

17. Please confirm voice fire alarm is not required.

RESPONSE: Confirmed.

18. Please confirm fire alarm pathway survivability requirements.

RESPONSE: Such shall be IAW NFPA 72.

19. Please confirm whether all fire alarm circuits can be Class B.

RESPONSE: Confirmed Class B.

20. Sheet FA-2 requires the existing Simplex 4100 to be expanded to accommodate the new devices and preaction valve releasing function. However, section 21 13 18 paragraph 2.9 includes criteria for a separate releasing control unit. Please clarify the criteria with which the existing Simplex 4100 must comply.

RESPONSE: The existing panel shall be expanded to accommodate suppression releasing functionality.

21. Section 21 13 18 includes criteria for air sampling smoke detection but the fire alarm plans indicate no such technology. Please clarify.

RESPONSE: Please note that demolition of FA detectors is only in Rooms 107, 112, 114, 115, 116, 117, 118, and 118A. The plans do not require any other smoke or heat detectors.

Fire Suppression

1. Section 01.10.00 paragraph 1.04.A indicates that the building will be occupied other than between October 13, 2022 and January 5, 2023. Are fire protection system outages permitted outside this vacancy window? For fire protection system outages which occur within the vacancy window, what are the system outage requirements? If a fire watch is required, will FAA provide the fire watch?

RESPONSE: Fire protection system outages are not permitted during the occupancy of the building. The FAA will provide fire watch during the vacancy window.

2. Section 21 13 13 paragraph 1.1 includes references to many criteria which do not seem to be applicable. Please confirm references including, but not necessarily limited to ASSE1013 (RP BFPs), ICS 705-1, NFPA 13R, NFPA 101, please confirm this is not applicable.

RESPONSE: Confirmed.

3. Section 21 13 13 paragraph 1.2.1.1 references a fire pump. Is a fire pump required?

RESPONSE: Fire pump is required and shall be provided in accordance with the associated drawing and specification. See attached drawing sheet FS-6 and speciation section 2130000

FIRE PUMP ENCLOSURE.

4. Section 21 13 13 paragraph 2.2.1.1 requires “Grooved pipe must be cut-grooved.” Please confirm this is an error and that roll-grooved piping is permitted on the wet pipe system.

RESPONSE: Such is permitted for the correct Pipe Schedule.

5. Section 21 13 13 paragraph 2.2.3 is not edited – is seismic bracing required or not?

6. Section 21 13 13 paragraph 2.4 requires backflow prevention assembly to comply with ASSE 1013 and ASSE 1015 – please confirm whether backflow prevention assembly must be the reduced pressure type.

RESPONSE: Backflow prevention device does not necessarily have to be reduced pressure type.

7. Section 21 13 13 paragraph 2.5.2 requires “brasschrome-plated sprinklers” – which is it?

RESPONSE: Chrome.

8. Sheet FS-2 fire sprinkler notes permits a NICET IV in Special Hazard Suppression Systems to take responsibility for system layout. Please confirm this is an error since these are water-based systems.

RESPONSE: There is no need to remove this statement because the reference allows for a Level III Technician in water based systems.

9. Sheet FS-2 keyed notes FS1 and FS3 indicate a new double interlock preaction and deluge system at Chiller 113. It appears reference to a deluge system is an error, please confirm intent.

RESPONSE: Confirmed, system shall be preaction not deluge.

10. Sheet FS-2 provides hydrant flow test data, dictates hazard classification, but states that the contractor must not provide a fire pump. Please confirm the engineer of record has performed calculations to ensure that a fire pump is not required so that the contractor may omit a fire pump from their bid.

RESPONSE: Fire pump is required and shall be provided in accordance with the associated drawing and specification. See attached drawing sheet FS-6 and speciation section 2130000

FIRE PUMP ENCLOSURE.

11. Sheet FS-2 indicates that pipe sizes are the contractor’s responsibility, but no such delegation is made regarding pipe routing and sprinkler locations. Please confirm that the indicated pipe routing and sprinkler locations are contractually binding. Presuming pipe routing is contractually binding, please include elevations and sprinkler types.

RESPONSE: It is relayed from the FAA that the existing structure cannot take any more weight than what is already present. The referenced details, especially as they relate to – Lab Room 107, Generator Room 116, and Battery Room 117 apply herein. The contractor shall take special care such that the “weight per foot” for the piping is not exceeded. The final piping diameter may be smaller as long as the weight restriction is observed and also that they hydraulic calculations prove true. The location of the sprinklers and the routing of the piping is indicated for reference.

12. Sheet FS-2 indicates density/area values but does not include area increases for dry & DIPA systems. Please confirm the indicated values are correct.

RESPONSE: The final system shall be IAW NFPA 13, the indicated items are for general reference.

13. Neither the plans nor specifications indicate which rooms receive which types of sprinklers.

Please provide room schedule indicating required k-factor, response type, finish, and sprinkler type for each room.

RESPONSE: Spec 211313 Section 2.5 and Spec 211318 Section 2.7 both indicate the fire basic fire sprinkler requirements as noted.

14. Section 21 13 13 paragraph 3.3.8.d indicates “all penetrations through the boundary of rooms/areas identified as secure space area must meet ICS 705-1.” Please confirm which rooms must comply. Please provide detail for how this penetration must be mitigated.

RESPONSE: Reference will be removed.

15. Section 21 13 13 paragraph 3.3.8.b references section 07 84 00 firestopping, which is not included. Please include 07 84 00 or modify specification language.

RESPONSE: Spec reference will be removed but firestopping must still be provided in accordance with IBC and other applicable codes and standards.

16. Section 21 13 13 paragraph 3.5 and 21 13 18 paragraph 3.6 requires “color code mark piping red.” Does this mean ALL above ground sprinkler system piping must be field-painted red? Or are red bands at [insert intervals] acceptable?

RESPONSE: All piping shall be painted red.

17. Section 21 13 13 paragraph 3.7.1 requires flushing and hydrostatic testing of underground piping.

All underground piping is to remain as-is, correct? If so, must the existing piping be subjected to this initial acceptance testing criteria?

RESPONSE: All underground remain as is.

18. Please provide as-built / survey of underground water utility which supplies fire sprinkler system and indicate the hydrant which was tested (FS-2 flow test data) so that contractor may perform hydraulic calculations.

RESPONSE: See attached drawing C201 - Storm Sewer Plan and Profile.

19. Section 21 13 18 includes many requirements which may not be applicable to the project (many submittal line items, air sampling smoke detection, graphic annunciators, and other items). Please clarify specification section expectations.

RESPONSE: Please reference items, equipment, details, from the plans and provide those in accordance with the specifications.

20. Section 21 13 18 paragraph 2.2.1.1 appears to prohibit roll-grooved steel pipe on the preaction system. Is roll-grooved piping permitted?

RESPONSE: Roll-grooved is approved for the correct Pipe Schedule.

21. Section 21 13 18 also includes requirements for a backflow prevention assembly (just like 21 13

13) – only one BFP is required, correct?

RESPONSE: Such is correct.

22. Sheet FS-2 requires preaction system to be galvanized piping – are you sure you want galvanized with nitrogen inerting?

RESPONSE: This is correct.

23. Sheet FS-2 requires some rooms to be galvanized sch 10 and some to be galvanized sch 40 – why specify pipe schedule by room?

RESPONSE: Such was done at the request of the FAA because of structural considerations.

24. Section 21 13 18 – same question on types of sprinklers as in 21 13 13. Which rooms receive which type and finish of sprinklers?

RESPONSE: Lance LaRue – The sprinkler head type shall be IAW NFPA 13, sprinkler finish shall be the same as the existing heads that are being replaced.

25. Sheet FS-4 does not show the preaction valve or backflow prevention assembly. Also, it includes criteria for the underground piping which seems to be excluded from the scope of work. Please clarify riser diagram.

RESPONSE: Please provide fire sprinkler manifold with typical wet-pipe riser and typical pre-action riser. Please further reference Detail 5 / FS-4 for wet-pipe riser and Detail 1 / FS-3 for pre-action details.

Vendor C

1. The existing fire suppression system looked to have been painted white. Please confirm if the new system will be painted or not.

RESPONSE: All piping shall be painted red.

Vendor D

1. Are there any fire alarm devices under the raised floor areas

a. If so, do they need to be included in this scope?

RESPONSE: There were no as-built files available for reference for the existing fire alarm system.

Our site visit did not reveal any devices under any raised floors. Please note that demolition of FA detectors is only in Rooms 107, 112, 114, 115, 116, 117, 118, and 118A.

2. Who will be responsible for disposal of demoed lamps?

RESPONSE: All lighting lamps are to be collected by the contractor and recycled certificates should be provided to FAA, copies provided to AMP-001, and included in contractor’s monthly waste management reports.

3. Who will be responsible for disposal of ballasts that contain hazardous chemicals, if any are encountered?

RESPONSE: All ballasts that are recovered during the demolition are to be collected and recycled and containerized in a drum provided by AMP-400. PCB ballasts are to be turned in to AMP-100 for disposal as hazardous waste. Coordinate activities with AMP-100.