Attachment 9 - Pre-Bid Questions for B2405 B2406 - November 3 2020 11022020.pdf

Repair HVAC Dormitory, B2405 & B2406

FA4418-20-R-0010 – Pre-Bid Questions

3 NOVEMBER 2020

1 Specification 21-13-13.00-20, paragraph 1.2 states, “Temporarily dismantle the portion of the existing automatic wet pipe fire extinguishing sprinkler system that interferes with the renovation work at the end of each wing. Replace the components that were removed exactly as they were for complete fire protection coverage throughout the spaces affected by the renovation.” Will the

Government provide as-built drawings for both B2405 & B2406 to accurately estimate the scope of work for the wet- pipe sprinkler system?

a. Are there individual wing shut off valves for the wet pipe sprinkler system or will the entire facility need to be shut down to accommodate the renovation?

b. Same specification, paragraph 3.4 & 3.5 indicates fire suppression tests are required prior to acceptance. Will testing of the EXISTING fire suppression system be required PRIOR to renovation to ensure there are no existing issues with the fire suppression system prior to renovation?

CE Response: As-Builts for the sprinkler system are provided with FBO Addendum 2, 7 Attic

Sprinkler Iso Vlv Loc.pdf. No, testing of the EXISTING fire suppression system will not be required

PRIOR to renovation to ensure there are no existing issues with the fire suppression system prior to renovation.

2 Is the current Fire Alarm/Mass Notification System under a specific maintenance or service contract? If so, please provide the contact information for this contractor to eliminate a conflict in service agreements while renovating these facilities.

CE Response: Yes. Eagle Fire is under contract for maintenance. The COR is Franklin Tallman. His phone number is (843) 794-7451. His email is franklin.tallman.1@us.af.mil.

3 Specification 28-31-76, Section 3.3 indicates Fire Alarm Testing requirements after renovation is complete. Will testing of the EXISTING fire alarm system PRIOR to renovation be required to ensure there are no existing troubles or faults within the system prior to renovation?

CE Response: A pre-test of the existing is required to assess all pre-existing issues and troubles in the FA system within the scope of work.

4 Specification Section 01 35 26, paragraph 1.5.1.2. states “The Contractor Quality Control Person can be the SSHO on this project.” Additionally, Specification Section 01 45 00, paragraph 1.5.1.1.

states “The QC Manager may not perform the duties of project superintendent.” Just to clarify, this project requires a minimum of (2) Individuals correct? One Superintendent & one Quality Control

Manager/SSHO.

This project requires a minimum of (2) Individuals. One Superintendent & one Quality Control Manager/SSHO. The QC Manager can also be the SSHO, provided that he/she meets the requirements for SSHO as indicated in 01 35 26.

5 Specification Section 26-00-00.00 20, paragraph 1.1 references the 2017 National Electric Code via NFPA 70. Please confirm that the 2017 NEC will be the governing code document for electrical work.– Drawing Sheets (Both B2405 & B2406) M101, M102, M103, & M104 indicate tie-in points for new ductwork to be connected to the existing ductwork. Does the Government expect the existing-to-remain ductwork to be professionally cleaned before connecting/transitioning newly installed duct?

CE Response: 1. 2017 NEC shall be used. 2. No, ductwork does not require cleaning. However, when opening ductwork system, it is expected of the contractor to prevent any debris (dust or trash) from entering the undisturbed duct since it is downstream of the filters. New ductwork upstream of the tie-in location shall also be verified clean before startup of AHU.

6 Drawing Sheet C001, General Note 1 states “The erosion control plans contained here-in are part of a larger comprehensive Stormwater Pollution Prevention Plan (SWPPP).” Will the Government provide the SWPPP on file for this project? What erosion control or storm water pollution prevention measures will be required for this project? The civil drawings do not indicate any SWPPP measures to be performed.

CE Response: A SWPPP is not required for this project, as disturbance to the designed exterior area is not 1 acre or greater. If contractor disturbs in excess of 1 acre at any building or additional approved laydown area, then contractor shall comply with the following:

“Provide a Construction General Permit as required by 40 CFR 122.26 or the State of South Carolina General Permit. Under the terms and conditions of the permit, install, inspect, maintain BMPs, prepare stormwater erosion and sediment control inspection reports, and submit SWPPP inspection reports. Maintain construction operations and management in compliance with the terms and conditions of the general permit for stormwater discharges from construction activities.

In this case, the Contractor is responsible for obtaining the SWPPP and the Approved SCDHEC NPDES Permit for coverage by the State General permit for Storm Water Discharges. All other erosion and pollution control indicated on the plans and specifications still apply. Ruts caused by lift equipment/other vehicles shall be avoided to prevent soil from washing down storm drains and streams/wetlands.

7 Solicitation document, section 11 states “The contractor shall begin performance within 45 calendar days and complete it within 550 calendar days after receiving NTP.” The provided document titled “Statement of Performance Time” Indicates a total performance time of 715 calendar days.

Which of these is the Period of Performance after NTP? 550 or 715 calendar days?

CE Response: After NTP, there is a construction period of 550 days. After 550 days, there is a 30-day closeout period. Contractors are advised to disregard attachment 3, Performance Time-2405- 2406.

8 Specification 01 45 00, paragraph 1.6.1., III states “a document generated from an onsite in person license holder inspection before any work is concealed, energized, filled or utilized. This affidavit is due weekly while work is being performed or at another interval agreed to by the KO. The following trades require this inspection: Air Conditioning, Electrical, Heating, Lightning Protection, Fire

Protection and Plumbing.” Please confirm that the Government is requiring a license holder in each of the above mentioned trades perform weekly inspections on those scopes of work and provide an affidavit to the Government weekly.

CE Response: Yes. The government is requiring a license holder in each of the above mentioned trades to perform inspections. For this project, an affidavit shall be due weekly while work relative to that trade is performed.

9 Drawing Sheet C001 (both buildings), General Note 1 states “The erosion control plans contained here-in are part of a larger comprehensive Stormwater Pollution Prevention Plan (SWPPP).” Will the

Government provide this on-file SWPPP for contractor’s review PRIOR to bidding to account for any additional SWPPP measures/inspections that may be required to comply with this plan?

Additionally, Specification Section 01 57 19.00 31, paragraph 3.4.1 states “The Contracting Officer has obtained a Land Disturbance Permit from SCDHEC and an approved Storm Water Pollution Prevention

Plan (SWPPP).” Also, this same specification requires the contractor to prepare and submit a

Registration Statement as a co-permittee with the Contracting Officer before any land disturbing activities begin. Lastly, this specification states that the contractor shall “retain the services of a

Professional Engineer registered in the State of South Carolina to oversee erosion control systems and to provide final certification at the end of the project, in compliance with the requirements of the

General Permit.” Will the Government be willing to allow sediment and erosion control inspections to be performed by a Qualified Compliance Inspector of Stormwater in lieu of the registered Professional

Engineer?

CE Response: No, the government will not allow a Qualified Compliance Inspector of Stormwater in lieu of the registered Professional Engineer however, A SWPPP is not required for this project, as disturbance to the designed exterior area is not 1 acre or greater. See the response to question number 6.

10 Reference Solicitation Document, Section I – Contract Clauses, 5352.242-9000, “Contractor

Access to Air Force Installations 11/1/2012” states “The contractor shall obtain base identification and vehicle passes, if required, for all contractor personnel who make visit to or perform work on the Air

Force installation(s) cited in the contract.” Additionally, Specification Section 01 14 00, paragraph

1.2.1 states “It is incumbent on the Contractor to ascertain the current security and base access requirements appropriate to the project location and incorporate the cost, if any, for compliance to said requirements into Contractor’s proposal.” B2405 & B2406 are both located within a specific area on the Naval Weapons Station – Are there additional site access requirements to gain access to these facilities after gaining access to the installation? Will a contractor access log with everyone’s name, vehicle description and license plate, be required to be maintained throughout the life of the contract to gain access to the job site each day? Is there a quantify of vehicles allowed to enter this area? Will the General Contractor be required to limit subcontractor access to the site and provide transportation for all access personnel?

CE Response: Are there additional site access requirements to gain access to these facilities after gaining access to the installation? YES, The contractor(s) will need to check into an additional gate for NNPTC Campus access (Galley/BEQ access area), Drivers ID and vehicle information will be checked against a list the general contractor has submitted/provided NNPTC Security via CE/CONS before work has started (NNPTC list) with the driver and vehicle information recorded on this list.

Will a contractor access log with everyone’s name, vehicle description and license plate, be required to be maintained throughout the life of the contract to gain access to the job site each day? Yes. Is there a quantify of vehicles allowed to enter this area? Yes. There are six parking spaces available for contractor use. Will the General Contractor be required to limit subcontractor access to the site and provide transportation for all access personnel? GC to manage the limited parking. There are only six parking spaces total available for prime and sub-contractor use.

11 In regard to the note to provide a hard cover for the cable tray, are these covers to be permanent? Or just to protect the tray during construction?

a. If the tray covers are permanent, what load rating do the covers need to have? Does this apply to the entirety of the tray or just the areas subject to being stepped on?

CE Response: Temporary covers to protect trays during all demolition and construction. All trays in attic are subject to protection. Means and methods are contractors’ responsibility. There is approximately 1432 feet of 30”W x 4”D aluminum ladder tray per building that the contractor will be responsible for if damaged.

12 All “E” drawings have Key note 10 but the device is only shown on E102 (B wing). I assume this is the only wing that gets these unit emergency shut-offs and all units are controlled through A/C systems controls? Are all units per floor controlled by 1 E-stop per floor (3 total) or do they each get 1

(4 per floor making 12 total)?

CE Response: Yes. B- Wing on E102 is the only wing with an emergency shutoff and yes, all units are controlled through A/C systems controls. However the contractor shall install one button for each floor in the center core for a total of 3 buttons. Sheet E102 indicates where the E-Stop buttons will be approximately located on all floors beneath the attic. And no, activation of any E-

Stop shall de-energize all air handlers in the entire building as indicated on Sheet M005.

13 Can you confirm if SSHO/QC person for electrical and HVAC has to be 3rd party or if this role can be filled by our on-site Superintendent? Section 01 35 26 Page 4 1.5.1.2 Contractor Quality Control

(QC) Person: The Contractor Quality Control Person can be the SSHO on this project. I assume this is site superintendent?

CE Response: No, the superintendent cannot be the SSHO/QC person for the prime-contractor, electrical and HVAC, or any trade. The SSHO is not required for each trade. The requirements for the QC manager shall comply with section 01 45 00. The requirements for the SSHO shall comply with section 01 35 26. Again, the site superintendent cannot perform duties of the SSHO or the QC manager.

14 Can I submit our redlines to you as PDF or does this have to be a CAD drawing?

CE Response: The redlines can be submitted in pdfs. The approved redlines then becomes the As-builts which has to be submitted in electronic PDFs and CAD (.dwg format).

15 Please confirm where temporary power can be pulled from for office trailer, If temp power cannot be pulled for trailer can contractor use one of the suite as an office?

CE Response: No utilities will be provided to the as-indicated laydown areas. If trailer is stationed in the indicated area, and power is required, contractor may use a portable generator for power. Generator is limited to a maximum of 73 db. It shall not be positioned near any intake louvers to the facility. Extensions cords must not become a tripping hazardous, nor can they be subject to damage from rolling vehicles/equipment. Equipment and maintenance are the contractor’s responsibility.

16 During the walk through there was mention of additional building caulking. Please provide scope and locations for this.

CE Response: The contract documents indicates the scope of the work. No additional caulking is required at this time.

17 Please confirm the Gable louvers have to be replaced by new and cannot be reused if undamaged.

CE Response: Replace as new in accordance with contract documents.

18 Please confirm the time lapse between work on each wing.

CE Response: The lapse in time between each wing shall be no more than 7 days after acceptance of the wing being worked before contractor will be given the next wing. The spec section 01 14 00, para. 1.2.6 is to be clarified to mean 1 building and 1 wing will be worked at any one time.

19 Will existing piping/ductwork need to be brought up to code, in reference to seismic, etc..? With so little new piping to be installed, will the majority of attic piping will be left as is?

CE Response: All replaced or disturbed ductwork and piping shall be brought up to code and seismically supported IAW plans and specs.

20 I do not see where any coil coating is specified and believe this will be required for Goose Creek as a coastal area.

CE Response: AHU coil coating is not required as there are filtered ERM’s supplying OA to the AHU’s.

21 Will Test & Balance of each building require us to re-check the units within the suites? (Both airside & waterside) Specs say to “test each system as a whole” but that is somewhat vague. We do not know if the existing VAV’s in the suites are electric re-heat or hot water. If electric, we will only need to check airside.

CE Response: TAB of systems below the attic is not required. A full TAB of all the supply, return, outside air, and exhaust duct system leaving or entering the attic is required for existing and new.

22 Parking – how many vehicles will be allowed on the site each day or how much space is available for parking.

CE Response: There are 6 vehicle spots are available for contractor parking. Contractor shall submit site layout plan with this parking request.

23 Commissioning – is this required by contractor?

CE Response: No commissioning is required, but TAB is required by Section 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC.

24 The phasing indicated a seven-day student moving event between each wing. Does that mean a waiting period of one week between each wing renovation?

CE Response: The lapse in time between each wing shall be no more than 7 days after acceptance of the wing being worked before contractor will be given the next wing. The spec section 01 14 00, para. 1.2.6 is to be clarified to mean 1 building and 1 wing will be worked at any one time.

25 Please clarify whether the dormitories will be occupied during the renovation and will temporary air be required?

CE Response: The individual wing will be vacated one at a time. No temporary air will be required for that vacated wing.

26 The instructions indicate that work in one wing will be completed prior to starting work in another. Is this for one building only or can a wing in each building be worked on concurrently?

CE Response: CE Response: The lapse in time between each wing shall be no more than 7 days after acceptance of the wing being worked before contractor will be given the next wing. The spec section 01 14 00, para. 1.2.6 is to be clarified to mean 1 building and 1 wing will be worked at any one time.

27 Does the phasing of each wing apply to the mechanical work only or to the exterior wall, louvers, and roofing work as well?

CE Response: Any work on an occupied wing of a building that does not affect the conditioned air in that occupied wing or personnel safety will be authorized at the CO’s discretion on a case by case basis. Request for work outside the designated unoccupied wing must be submitted 14 days in advanced.

28 Is it a requirement that all silt fence shown on the site plans be installed even if these areas will not be entered, used, or impacted by construction operations?

CE Response: No. However, any landscaped areas that the contractor disturbs and has a potential to deposit sediment to other surrounding areas must be protected by approved methods.

29 Sheet W101 does not show buildings 2403 and 2404 as hatched “NIC”. Please confirm that these buildings are not in the contract.

CE Response: Project includes buildings 2405 and 2406. All others buildings shown are for info only.

30 The designations for the wings on sheet C700 do not coincide with those on sheet W201. Please clarify which designations are correct.

CE Response: Designations on sheet C700 are correct.

31 In the past, bids being hand carried to JBC were collected at the visitor building in lieu of contractors having to get a badge and deliver to the 101 E. Hill Blvd Contracting office. Please advise if this will be the case for the bids being hand carried.

CE Response: Yes. Contracting Rep will be at the VCC 30 minutes before proposals are due collecting proposals.

32 The attic HVAC Ductwork Plans (M101, M102, M103, & M104 for both B2405 & B2406) do not indicate duct sizes on the drawings. Please provide revised plans with the duct sizes indicated to be installed.

CE Response: Modified HVAC Ductwork Floor Plans are provided with FBO Addendum 2, attachment 4, HVAC Plans duct dimensions.pdf.

33 Drawing Sheet C720 (B2405 & B2406), Sodding Note 1 states “Contractor shall stake all sod located adjacent ot airfield pavement with fence fabric, 10-12” landscape spikes and wire.” Please confirm that this contract does NOT require airfield work at this time.

CE Response: No airfield work is within the scope of work.

34 Drawing Sheet W100 (B2405 & B2406), Demolition Note 9 states “The lightning protection system shall be temporarily disconnected and removed to complete work, and reinstalled/functional at the end of each day.” Will the lightning protection system be required to be tested at the end of each day after re-installation?

CE Response: Yes. A positive continuity test will confirm system has been properly connected at the end of each day. Final testing shall be completed before going to the next wing.

35 Drawing Sheet W202 (B2405 & B2406), Roof Repairs Note 5 states to “remove and replace all hip and ridge caps, with added closures and oversized hip and ridge caps with all new associated accessories, fasteners and underlayment.” Does the existing roof system have fall protection anchors built into the roof or will one be required to be installed prior to work being performed?

CE Response: No fall protection anchors are on the structure. The contractor’s safety plan shall address all fall protection.

36 Drawing Sheet W201, Note 6 indicates EIFS wall repairs at all corner locations on all floors noted.

a. Is this EIFS repair to occur at ALL locations on both B2405 & B2406, or just the clouded locations shown on the drawings?

CE Response: Yes, EIFS repairs occur at all corners of building 2405 and 2406 in accordance with sheet W201.

b. Will the Government entertain an estimated line item quantity CLIN to be used for EIFS repairs? The unit of measurement could be by “Square Feet” or “Each” to best quantify the work required.

CE Response: No.

37 On drawing C722 there is a list of “Construction Maintenance Requirements”. Is the contractor responsible for mowing lawns and all other items listed on this page? If so can you define area we must maintain?

CE Response: Yes. Contractor is responsible for all areas on contractor’s approved Construction Site Plan.

38 When do you foresee the Govt issuing Amendment No. 1, including the Attendee List for the Pre-

Proposal Meeting?

CE Response: Once the questions are answered, we will issue the amendment with the sign-in sheet and answers

39 Do you foresee the fire alarm scope being added to this project as presumed at the Pre-Proposal

Meeting?

CE Response: If it is added, it will be added to the solicitation via addendum.

40 Regarding the “joint sealant” scope of work on this project, Sheet W201, Note 5 states to, “remove and replace all exterior sealant joints on all exterior walls”. No exterior elevations have been provided for this scope of work in order to estimate the total joint amounts. Please provide exterior building elevations specifically illustrating the location of the existing joints to be replaced.

CE Response: All exterior sealant joints are to be removed and replaced for each building.

41 Please confirm that NO existing sealant joints on the roof are required to be replaced under this project scope.

CE Response: Roof Repair Work is as indicated on roof repair sheets W100 through W303 in attachment 1 of the solicitation.

42 Can it be assumed that all starters are manufactured by Square D?

CE Response: - No. Contractors are advised that starters may be from different manufacturers or the same manufacturer. They are existing and will remain. These existing starters will provide the rated power to the new VFD’s.

43 Please provide the size and total length of cable tray to be covered. Can it be assumed to be temporary protection and plywood would be suitable for this purpose?

CE Response: Temporary covers to protect trays during all demolition and construction. All trays in attic are subject to protection. Means and methods are contractors’ responsibility. There is approximately 1432 feet of 30”W x 4”D aluminum ladder tray per building that the contractor will be responsible for if damaged.

44 What Fire Alarm System is currently in place?

CE Response: Simplex. There is likely an addendum coming that will replace the entire fire alarm system in both buildings.

45 Are gable and dormer louvers being replaced with new or removed and re-installed? The plans indicate to remove and re-install but scope of work says to replace.

CE Response: All louvers are to be replaced in accordance with the plans and Section 08 91 00.

46 Would we assume the proposal date will be extended?

CE Response: Yes. The CO will indicate time of extension on the solicitation website.

47 If we would like another opportunity to visit site could we arrange?

CE Response: Additional Site Visit will be granted only if time allows before proposals are due, and dependent on time extensions granted by JBC CO.

48 Is the attic considered a mechanical room (exposed) or concealed space? The pictures of the existing duct work show standard fiberglass duct wrap for all rectangular duct in the attic; however, Specification 23 07 00, paragraph 3.3.2 states “Insulation for rectangular ducts shall be flexible type where concealed, minimum density ¾ pcf, and rigid type where exposed, minimum density 3 pcf.

Insulation for both concealed and exposed round/oval ducts shall be flexible type, minimum density ¾ pcf or a semi rigid board, minimum density 3 pcf, formed or fabricated to a tight fit…”

CE Response: The attic is a conditioned mechanical space. All ductwork in the attic is considered exposed until it enters the space below either thru the floor or through a chase.

49 Chilled water piping insulation – Specification 23 07 00, paragraph 3.2.1.5, Table 1 calls for rigid foamglass (cellular glass) pipe insulation on all chilled water piping located inside the building but pictures on the detail page show Armaflex on all piping in the attic. Is Armaflex (flexible elastomeric) acceptable for the newly installed chilled water piping?

CE Response: No. Insulation for chilled water pipe shall be in accordance with Table I of Section 23 07 00.