FINAL QUESTIONS AND ANSWERS 657-502.docx

Questions and Answers #1-#56 Received on Pre-proposal Conference, PROJECT # 657-502, Expand and Upgrade Building 42 For Laboratory at Marion VA Medical Center, Illinois

QUESTION #1: The Plumbing specifications (25 05 23 – 3) call for butterfly valves under 4” to be lug style. Would a grooved valve be acceptable as well?

VA ANSWER: No, provide lug type per Specifications.

QUESTION #2: The Plumbing specifications (25 05 23 – 4) call for all grooved butterfly valves to have an EPDM encapsulated ductile iron disc. Will you also accept an electroless nickel plated ductile iron disc?

VA ANSWER: No, provide EPDM encapsulated ductile iron disc per Specifications.

QUESTION #3: The Mechanical specifications (23 21 13 - 10) call for all grooved butterfly valves to have an either an aluminum bronze or stainless-steel disc. Will you also accept an electroless nickel plated ductile iron disc?

VAANSWER: No, provide disc per Specifications.

QUESTION #4: The details for the terminal units (MQ-006) show an isolation valve on both the supply and return to the terminal units, but no balancing valve. Please confirm that there are no balancing valves required on the terminal units.

VA ANSWER: Balancing valve is not required. Note requirement for modulating control valve in Detail H/MQ006.

QUESTION #5: Specification Section 01 00 00; 1.11C, The specs state that "A copy of the soil report will be made available for inspection by bidders upon request to the COR at the VA Medical Center and shall be considered part of the contract documents." Please provide the report.

VA ANSWER: The contracting officer will share the project geotechnical report with all bidders. It will be an attachment to the Amendment.

THE FOLLOWING QUESTIONS #6 THROUGH #9 REFERENCED SECTION 01 00 00:

QUESTION #6: As it relates to the photographic documentation specification, will drone photography be required for the exterior documentation or can photographs from ground level be assumed?

VA ANSWER: Use of a drone is the contractor’s means and methods. Provide photographs as outlined in Specification Section 01 00 00, Part 1.30.

QUESTION #7: The requested photographic documentation software that interfaces with AUTOCAD drawings and provides an online multiple user interface with overlap capability is a limited software and is a very expensive monthly subscription. We are including this in the proposal but if this requirement were waived the cost could be significantly reduced. Please confirm that this software is required for this project.

VA ANSWER: AutoCAD interface is not required. However, photographs should be cross-referenced with architectural plans.

QUESTION #8: As it relates to the photographic documentation specification, we have VDC capability in house that meets the past performance requirements and qualifications. If the superintendent could provide the camera tripod setups for imaging by the technician remotely, we could eliminate the technician's monthly trips to the site which would result in a significant cost savings. Can the superintendent place the camera for imaging capture by the technician remotely?

VA ANSWER: Use of a remote technician is the contractor’s means and methods. The VA takes no exception, if specifications are satisfied.

QUESTION #9: Please confirm the minimum required quantity of General Contractor Staff onsite is 2, SSHO and superintendent.

VA ANSWER: Confirmed.

QUESTIONS #10: Section 01 32 16.15 Schedules for Small Project is not included in the specifications. Is scheduling a requirement for the project?

VA ANSWER: There are 2 schedules that will be required from the contractor upon award: (1) Schedule of Contract Costs and (2) Construction Progress Schedule.

QUESTION 11: If 01 32 16.15 1.9A becomes an added requirement, Monthly schedule update meetings will be held on dates mutually agreed to by the COR and the Contractor. Contractor and their CPM consultant (if applicable) shall attend all monthly schedule update meetings. Will the CPM Consultant be allowed to attend these meetings and provide updates via WEBEX or another shared live audio visual technical service instead of attending in person?

VA ANSWER: It can be arranged with the COR. The CPM consultant will be allowed to attend WEBEX or Skype meetings unless his physical presence will be required.

QUESTION #12: Specification Section 01 35 26; 1.7D, The SSHO or an equally qualified Designated Representative/alternate will maintain a presence on the site during construction operations in accordance with FAR Clause 52.236-6: Superintendence by the Contractor. Please clarify if the SSHO may also have an additional role on-site such as Superintendent.

VA ANSWER: Per Specification Section 01 35 26, 1.7C, “the SSHO has to be a separate qualified individual from the Prime Contractor’s Superintendent and/or Quality Control Manager with duties only as the SSHO” .

QUESTION #13: Section 01 45 00 is not included in the RFP. Is a quality management program required? Will a full time QC Manager be required onsite?

VA ANSWER: There is a requirement in the solicitation for Quality Control manager as one of the key staffing required for this project (see Instructions to Offerors). QC manager does not need to be a full-time job but required to be doing his QC onsite and will only be compensated at the time of his service as QC manager.

QUESTION #14: Section 01 45 00; 1.4A, The Safety and Health Manager shall satisfy the requirements of Specification 01 35 26, SAFETY REQUIREMENTS and reports directly to a senior project (or corporate) official independent from the CQC System Manager. Please clarify if the SSHO is not able to share role with QC Manager.

VA ANSWER: Please see answer # 12.

QUESTION # 15: Section 07 13 52; 4A-C A. Field Tests: Performed by testing laboratory specified in Section 01 45 29, TESTING LABORATORY SERVICES.

B. Testing:

1. Before any protection or wearing course is applied, test all horizontal applications of waterproofing with a minimum of 25 mm (1 inch) head of water above highest point and leave for 24 hours.

2. Mark leaks and repair when waterproofing is dry.

3. Certify, to Contracting Officer's Representative, that water tests have been made and that areas tested were found watertight.

C. Inspection:

1. Do not cover waterproofed surfaces by other materials or backfill until work is approved by Contracting Officer's Representative.

These tests were not listed in specification 01 45 29. Are these tests to be provided by the third-party testing agency and paid for by the GC?

VA ANSWER: Yes.

QUESTIONS #16: Section 07 27 26; 3.3A-D,

1. Up to 900 sq. m (10,000 sq. ft.): One inspection.

2. 901 - 3,300 sq. m (10,001 - 35,000 sq. ft.): Two inspections.

3. 3,300 - 7,000 sq. m (35,001 - 75,000 sq. ft.): Three inspections.

4. 7,001 - 11,600 sq. m (75,001 - 125,000 sq. ft.): Four inspections.

5. 11,601 - 19,000 sq. m (125,001 - 200,000 sq. ft.): Five inspections.

6. Over 19,000 sq. m (200,000 sq. ft.): Six inspections.

These tests were not listed in specification 01 45 29. Are these tests to be provided by the third-party testing agency and paid for by the GC?

VA ANSWER: Yes.

QUESTION #17: Section 07 92 00; 3.6A A. Field-Adhesion Testing: Field-test joint-sealant adhesion to joint substrates according to Method A, Field-Applied Sealant Joint Hand Pull Tab, in Appendix X1 in ASTM C1193 or Method A, Tail Procedure, in ASTM C1521.

1. Extent of Testing: Test completed elastomeric sealant joints as follows:

a. Perform 10 tests for first 305 m (1000 feet) of joint length for each type of elastomeric sealant and joint substrate.

b. Perform one test for each 305 m (1000 feet) of joint length thereafter or one test per each floor per elevation.

These tests were not listed in specification 01 45 29. Are these tests to be provided by the third-party testing agency and paid by the GC?

VA ANSWER: The tests are required and should be included in the bid price. The tests may be performed by the general contractor, subcontractor, or third-party, unless stated otherwise in the contract documents. Tests should be witnessed by the COR.

QUESTION #18: Section 09 05 16; 3.2G-K, G. Perform anhydrous calcium chloride test, ASTM F 1869. Proceed with application only after substrates have maximum moisture-vapor-emission rate of per flooring manufactures formal and project specific written recommendation.

H. Perform in situ probe test, ASTM F2170. Proceed with application only after substrates do not exceed a maximum potential equilibrium relative humidity per flooring manufacture’s formal and project specific written recommendation.

I. Provide a written report showing test placement and results.

J. Prepare joints in accordance with Section 07 92 00, JOINT SEALANTS and material manufacturer’s instructions.

K. Alkalinity: Measure surface pH in accordance with procedures provided in ASTM F710 or as outlined by qualified testing agency or flooring manufacturer’s technical representative. These tests were not listed in specification 01 45 29. Are these tests to be provided by the third party testing agency and paid for by the GC?

VA ANSWER: The tests are required and should be included in the bid price. The tests may be performed by the general contractor, subcontractor, or third-party, unless stated otherwise in the contract documents. Tests should be witnessed by the COR.

QUESTION #19: Section 22 63 00; 1.3D, D. Laboratory and healthcare System Testing Organization: The testing shall be conducted by a party technically competent and experienced in the field of laboratory and healthcare pipeline testing. Testing and systems verification shall be performed by personnel meeting the qualifications of ANSI/ASSE Standard 6030. Such testing shall be performed by a party other than the installing contractor.

These tests were not listed in specification 01 45 29. Are these tests to be provided by the third-party testing agency and paid for by the GC?

VA ANSWER: Testing is required and should be included in the bid price. Testing may not be performed by installing contractor

QUESTION #20: Section 23 05 93; 1.3B,

1. TAB Agency: The TAB agency shall be a subcontractor of the General Contractor and shall report to and be paid by the General Contractor.

Please confirm that the T&B Contractor shall be subcontracted by the GC and the GC is responsible for these costs.

VA ANSWER: Confirmed

QUESTION #21: Section 23 05 93 ; 3.4,

3.4 DUCT AIR LEAKAGE TEST REPORT

TAB Agency shall perform the leakage test as outlined in "Duct leakage Tests and Repairs" in Section 23 31 00, HVAC DUCTS and CASINGS for TAB agency’s role and responsibilities in witnessing, recording and reporting of deficiencies.

Please confirm that duct leakage testing is required by test and balance agency for this contract.

VA ANSWER: Confirmed

QUESTION #22: Section 23 09 23 1.1G1,

1. The General Contractor of this project shall directly hire the Control System Integrator in a contract separate from the contract procuring the controls contractor administered by this Section of the technical specifications.

Could you please identify and provide contact information for the existing facility control system integrator?

VA ANSWER: The company is Johnson Controls. Contact Tommy Goostree at 618-435-7464 or Tommy.goostree@jci.com.

QUESTION #23: Sheet S-402, Special Inspector Shall:

1. Be approved by the Building Official prior to performing and duties. 2. Provide Proof of Licensure as a special inspector in the Project State for each Type of inspection. 3. Inspection reports are to meet the requirements of IBC 1704.2.4 and local standards. 4. Inspection Reports shall be submitted per IBC15, 1704.2, within 48 hours of performing inspections. 5. A final Inspection report shall be submitted following completion of the project documenting the types of special inspections performed and a statement indicating that teh structure is in compliance with the approved construction documents and applicable codes (See IBC 1704.2.4).

It is our understanding that this project is on federal land, outside the jurisdiction of the local building office and that permits are not required. This section for special inspections is written for a civilian project and not a federal project. Will approval be required by the building official and could you please provide the contact information of the building official having jurisdiction? Is state licensure acceptable?

ANSWER: Special inspections are required by the International Building Code, which is adopted by the VA and referenced throughout the specifications and drawings. Building Official is the VA. State licensure is acceptable as noted in Note #2 above.

QUESTION #24: Sheet S-402, Are continuous inspections required by a masonry inspector for the duration of the masonry install? Must this Inspector have state licensing as a masonry Inspector?

ANSWER: Continuous inspections are only required where indicated on special inspection tables on S420. “Provide proof of licensure as a special inspector in the Project State for each type of inspections.” per S420.

QUESTION #25: Sheet S-402, Listed under the section Statement of Special Inspections - Other are multiple features of work that require inspections 'performed by code inspection firm'. What are the qualification requirements for this inspection entity? The requirements are not listed in the specifications and the inspections are not defined in the specifications.

ANSWER: Code inspection firm also indicates special inspector

QUESTION #26: Are there any required or recommended sub-contractors to be utilized on this project? Can you provide a list of the contractors that are currently (or have recently) working in the building?

VA ANSWER: A list of recommended subcontractors will not be provided.

QUESTION #27: Section 02 00 00, If no geotechnical report is available, should we assume that any soil encountered is clean (hauled to CCDD) and excavations are neat (i.e., we have suitable bearing pressure at design depths).

VA ANSWER: See response to Question #5

QUESTION #28: Sheet A100, please provide a specification for the proposed shoring at the existing steam line ( South East of Building).

VA ANSWER: The contractor is responsible for protecting existing structures during construction. See Specification Section 31 20 00, Part 3.2. Shoring of the existing steam line is a contractor means and methods item.

QUESTION #29: Please confirm if shoring is necessary. Based on the cross-section detail on A300/1, it looks as if the proposed footing is just slightly lower than the existing utility structure. It also looks like the distance between the foundation and the structure will not be an issue.

ANSWER: Shoring of the existing tunnel is a contractor means and methods item. See detail 1/S408 – indicates shoring or underpin required.

QUESTION #30: Sheet S405/13, Please provide a cross section of the new proposed foundation wall and footing system along with the required reinforcing at the underpinned wall.

ANSWER: Entire existing foundation wall is to underpinned with grout or lean concrete per S101A and 13/S405. No reinforcement to be provided.

QUESTION #31: Sheet S402, please provide dimensions and reinforcement requirements for the elevator mat slab.

VA ANSWER: Dimensions for elevator mat slab, provided on 1/S101B. See 4/S405 for elevator mat slab reinforcing.

QUESTION #32: Section 05 12 00, Given the location of this project, can the AISC certification requirement for Fabrication and Erection be waived on this project to be more inclusive of the local subcontracting community?

VA ANSWER: The AISC certification requirement will not be waived for this project as this project is assigned to Seismic Design Category D and Risk Category III.

QUESTION #33: Sheet A501, wall section 3 shows a steel lintel at the new CMU wall opening, but nothing is specified on the structural drawings. Please provide lintel size, weights, and configurations for all openings.

ANSWER: Openings with a width of less than 3’-8”, provide (1) 8” deep bond beam w/ (2) #5. Openings from 3’-8” to 7’-0”, provide (2) 8” deep bond beams (16” total) w/ (2) #5 cont top & bottom. All bond beams to extend 16” past each end.

FOLLOWING QUESTIONS #34 THROUGH 39 Referenced Sheet A800 QUESTION #34: Please provide specification for GF1 (glass film).

ANSWER: The glass film to be equal to or better than 3M FASARA Glass Finishes Fabric/Washi SH2FGBL 1270, Burlap.

QUESTION #35: Please provide specification for GF2 (glass film).

ANSWER: The glass film to be equal to or better than 3M FASARA Glass Finishes Fabric/Washi SH2FGBL 1270, Burlap.

QUESTION #36: Please provide specification for GL2 (specialty glass).

ANSWER: GL2 is the same exterior glass used in window type 1.

VA QUESTION #37: Please confirm new finishes in the existing tunnel are only required between column line 1 and 6 (as our active work zone)? If not, please specify the extent to be provided by the GC.

VA ANSWER: : That is correct except for existing finishes damaged by contractors working on this project.

QUESTION #38: Based on the site visit video, it looks like the existing tunnel flooring is epoxy/concrete with no base board. The finish schedule is calling for Welded Sheet Flooring and Resilient Wall Base. Is there floor preparation required in this location (ie. shot blast, skimmed, moisture mitigated, etc)? Please clarify.

VA ANSWER: New material to be installed per manufacture requirements and/or specifications whichever is the more stringent requirement.

QUESTION #39: Please confirm that we are not replacing or adding on to the existing crash rails in the existing tunnel. If we are to replace these or add additional, please provide additional details and specification.

VA ANSWER: The GC is to modify existing crash rail if required for this project, but no new crash rails are being installed in the existing tunnel. Existing crash rails should be removed, stored, and put back as required for completion of work.

QUESTION #40: Sheet A700, please confirm that door frames 4 and 5 have glass sidelites. If so, please specify the glass type required.

ANSWER: Door Frames 4 and 5 have glass sidelights; glass to be ¼” TGL with Glass Film GF1 on all sidelights.

QUESTION #41: Section 09 06 00, Multiple specification sections reference 09 06 00 Schedule for Finishes but this section was not provided. Is this spec section available or is the information provided elsewhere?

ANSWER: All material specifications are provided on sheet A800 and as noted in this RFI and drawing elevations. Follow relevant spec sections for quality control.

QUESTION #42: Sheet A850, Per sheet A850 Equipment Schedule, is the GC only responsible for the five hood items (M1 / M2 / Hi1.1 / Hi1.2 / Hi1.3)? If the GC is responsible for any other items, please provide a Furnish / Install responsibility matrix for the remaining items on the Equipment Schedule.

VA ANSWER: Confirmed – The general contractor is only responsible for the items in the schedule that are assigned to the GC. The GC responsibility is noted in the remarks column in the Equipment Schedule.

QUESTIONS #43: Sheet MH-102, If we are extending the ductwork for the existing AHU-5, does the system need to be rebalanced and is there sufficient capacity to incorporate the additional volume of ductwork?

ANSWER: It is not required to rebalance AHU-5.

THE FOLLOWING QUESTIONS #44 THROUGH #50, REFERENCED SHEET ET200

QUESTION #44: Please clarify if any of the work in the existing building needs to be done off-hours. If so, what areas and what are the operating times.

VA ANSWER: Work requiring a system shutdown may need to be done outside of normal operating hours. The contractor should notify the COR of necessary shutdowns per the project specifications. Normal operating hours are from 7 a.m. to 4:30 p.m., Monday through Friday, except for federal holidays.

QUESTION #45: Please clarify if any of the work in the existing building needs to be done in phases. If so, what areas and what phasing partitions are required?

ANSWER: Phasing should not be required unless the General Contractor needs to phase or sequence the construction. Additionally, it does need to be sequenced so temporary tunnel work is completed before any roof tunnel modifications are made.

QUESTION #46: Please confirm the floor to underside of deck height in the existing building at new work locations.

VA ANSWER: It is noted on drawing 1/A300 in the elevation marks. The ground floor is 12’-3” above the existing tunnel floor. Height to underside of deck varies among existing buildings. Story heights are provided here for reference only. The contractor shall verify existing conditions in the field. Building 37 first floor story height: 12’-0”. Building 1 and 2 sub-basement story height: 6’-0”. Building 1 and 2 first floor story height: 12’-0”. Building 37 roof construction is metal deck over steel joists. Building 1 and 2 floor construction is ribbed slab.

QUESTION #47: Please provide a reflected ceiling plan for the existing space that is affected by the new work. If this is not possible, can you provide another site visit video like the one that was provided on the initial solicitation? Can you walk and videotape the proposed route?

VA ANSWER: The existing RFP is shown on sheet A400. Any work outside this area would need photographic or site visit. The contracting officer will provide reflected ceiling plans for reference only. The contractor shall verify existing conditions in the field.

See attached Reflected Ceiling Plans.

QUESTION #48: Is any of the work in the existing building in a "clean" or "sterile" space where extra precautions should be taken?

VA ANSWER: Refer to spec section “Safety Requirements” 01 35 26 on page 19, this project area is a Class II clean area, this is not a clean room lab. But infection control requirements shall be satisfied per project specifications.

QUESTION #49: Does any of the work in the existing building disturb fire rated partitions? If so, please specify which walls are fire and/or smoke rated.

VA ANSWER: A plan of existing fire-rated partitions will not be provided. Contractor should assume that any wall is fire-rated and then verify in the field. Refer to sheet G001 for the extent of rated partitions. There is a shaft wall furring applied to the existing building exterior framing that abuts the new stair.

QUESTION #50: Is there room in the interstial space for the new work we will be providing in the existing building, or do we need to relocate existing MEPs, etc. to accommodate the new work? If we have to relocate existing MEPs, etc, please provide necessary information so it can be quantified and priced.

VA ANSWER: Relocation of existing distributed systems is not anticipated, unless noted on drawings.

QUESTION 51: Spec section 27 15 00 2.2.J.5.a Fiber Optic on page 11: Paragraph 1 indicates the multimode fiber optic cable is to be OM1 and Paragraph 2.b indicates the fiber diameter is to be 50 microns. These two items are mutually exclusive. Should the fiber type in paragraph 1 be OM3, OM4, or should the fiber diameter be 62.5 microns?

VA ANSWER: It should be OM4.

QUESTION 52: If 01 45 00 is added to the specifications, The CQC System Manager is assigned as CQC System Manager but has duties as project superintendent in addition to quality control. Please confirm if the QC Manager is able to also be the superintendent. Please confirm that the minimum required number of on-site General Contractor Staff is 2 (SSHO and QC/Superintendent.

VA ANSWER: Even this section is not added, the Instruction to Offerors on Key Staffing, requires a Quality Control Manager and cannot be the same person as the Project Manager. Except for the Safety Officer (see answer 12), A key staffing can not hold more than 2 dual roles.

QUESTION 53: In sections 28 13 00 and 28 23 00, state to match existing Genetec Systems. The PAC’s system on campus was replaced recently with a SiPass System and the CCTV/VMS was replaced with Siveillance. Are we to match the SiPass and Siveillance Systems?

VA ANSWER: Yes. New systems to be extensions of the existing. Match existing active systems.

QUESTION 54: Reference the Calculation of self-performed work sheet: The bottom portion of the form states to “LIST THE NAMES OF ALL SB CONTRACTORS THAT WILL BE WORKING THE ABOVE DIVISIONS. BUSINESS MUST BE SMALL FOR NAICS 236220 TO BE USED TO MEET THE 15% REQUIREMENT AS STATED IN ACCORDANCE WITH VAAR 852.219-10(a)(1)(iii).” Please confirm that offerors do not need to list the names of subcontractors on the Calculation of Self Performed Work Sheet.

VA ANSWER: Confirmed. On this work sheet, if the names of the SB contractors are not available on the due date of proposal, please just indicate Y or N if work will be performed by Small business and add next to it “P” for Prime Contractor or “S” for subcontractor. The Subcontractors’ names will be required upon award of the contract on SF-1413.

THE FOLLOWING QUESTIONS #55 through 65 ARE ISSUES CONCERNING THE SCOPE OF WORK FOR 230923 - DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC ON THE SUBJECT SOLICITATION FOR PROJECT 657-502:

QUESTION #55: Server & Portable Operator Terminal-POT - Duplicate of existing ENGINEERING CONTROL CENTER (ECC) components (Existing by JCI serves entire Campus) Please clarify Project requirements are to extend existing ECC by adding to existing the ECC, the scope of this project for networking, control & monitoring, programming, graphics, reporting With upgrade of Software at existing Server & POT to current revision level(s) as of last date of warranty for this project (delete requirements for additional Campus Server Hardware, Software and Portable Operator Terminal Hardware from Section 230923)

VA ANSWER: Existing ECC should be extended. See response to Question #22.

QUESTION #55A: Ethernet Data Port missing for use by Section 230923 Please clarify that Ethernet Data Port is by Others by adding to ET102 an Ethernet Data Port notation as furnished by DIV-27, or Others, and dedicated for use by ECC and/or DDC.

(at location corresponding to DDC Panel on EP102)

ANSWER: Adding to ET102 an Ethernet Data Port is furnished by DIV-27.

QUESTION #56: Air Flow Measuring - Plans & Specs do not match:

1. MQ-002 in schedule for "AIR FLOW MEASURING DEVICES", shows 7ea AFM of probe array type to be located at fan inlets

1. MQ-011 in POINTS LIST SCHEDULE FOR ENGINEERING CONTROL CENTER (ECC) under column "CFM AIR FLOW" lists only six locations (no AHU-2 Exhaust)

1. MQ-08 & 09 (flow diagrams for AHU-1 & 2) show Velocity Pressure Sensor-VPS at AFM per schedule with OA & EA in ducts and additional\duplicate AFM at various AHU process locations

1. Specification Section 230923 - Direct-Digital Control System for HVAC indicates electronic (thermal dispersion) type Please revise this schedule to permit use of Thermal Dispersion type at Fan Inlets except duct probes for Outdoor Air Flow Monitoring applications.

ANSWER: Thermal Dispersion type at Fan Inlets except duct probes for Outdoor Air Flow Monitoring applications are acceptable.

Questions and Answers #57-#66 Received on Pre-proposal Conference, PROJECT # 657-502, Expand and Upgrade Building 42 For Laboratory at Marion VA Medical Center, Illinois

QUESTION #57: Flow Meters - Plans & Specs do not match:

1. MQ-002 in schedule for "WATER FLOW MEASURING DEVICES", shows 2ea WFMD of Orifice Type

1. MQ-011 in POINTS LIST SCHEDULE FOR ENGINEERING CONTROL CENTER (ECC) under column "FLOW, GPM" indicates many monitoring locations

1. MP series Plans locate the two above AND on MP-101 a call-out for "BTU Meter" which does not appear elsewhere in Bid Docs (not scheduled & not specified)

1. Specification Section 230923 - Direct-Digital Control System for HVAC indicates Vortex or Turbine type (not Orifice type) Please clarify by

1. revising this schedule to permit use of insertion electromagnetic type, and

1. adding WFMD-3 for Building Chilled Water with noted provisions for BTU Metering (CHW-F, CHWS-T, CHWR-T), and

1. clarifying that inputs are required for each flow meter (some flow control outputs may have been erroneously indicated in Points List under FLOW, GPM inputs).

ANSWER: a.) see attached schedule below. It is permissible to use insertion electromagnetic flow meter, basis of design: Onicon F-3500 series with full port ball valves.

b.) see attached schedule below and the BTU meter - Chilled Water Systems: provide vortex-shedding flowmeters with pressure and temperature sensors to determine energy flow. Basis of design: Proline Prowirl R 200 / 7R2B

WATER FLOW MEASURING DEVICES

Notes:

1. Device range GPM shall exceed design capacity by 20%.

2. All water flow measuring devices shall send signal to EMCS.

3. Vortex-shedding flowmeters with pressure and temperature sensors to determine energy flow.

c.) see attached revised sheet MQ011.

QUESTION #58: Control Valves - Spec calls for general use of globe valves except for 2-position control applications Please clarify that characterized Ball Valves may be used for Hydronic (CHW & HW) Coils.

ANSWER: Valves must follow specifications.

QUESTION #59: Lab Air Control System-lack of information on System normally found for Critical Spaces in this type facility (BSL3, Acid/Base, Histology, Microbiology, Main Lab, etc.)

1. MQ-09 Detail B-NEGATIVE PRESSURIZATION ALARMS, corresponds with four (4) Pairs of sensing & displays located by Keyed Note-16 on MH104 (no spec found for Room Pressure Monitor-RPM)

1. Keyed Note-16 on MH104 calls for AIR VOLUME CONTROL VALVE ACV-1 at six (6) locations, that do not appear elsewhere in schedules, plans, specs or control diagrams

1. A850 First Floor Equipment Plan & Schedule, notes 3ea Hoods and 3ea Canopy Hoods that are served by Exhaust Duct thru ACV-1 locations and out of EF-1

1. No Pressurization Plans are provided to confirm associated rooms CFM differential balancing (by TAB contractor) may result in safe condition

1. No Zone Humidity Sensing for Critical Spaces are found Please clarify that no Lab Air Control System is required because

1. All Hoods and/or canopies are Constant Volume with pre-wired local monitoring & alarm

1. ACV-1 are manual balancing dampers

1. EF-1 VFD will be used for adjustment by Air Balancer only

1. Only Room Pressure Monitoring is required

ANSWER: Pressurization plan Sheet MC101 is attached. Zone humidity sensor for AHU-1 shall be located on southeast wall of Room Phlebotomy E002. Zone humidity sensor for AHU-2 shall be located on Column C5 in Room Main Lab E019.

a.) Hoods are variable flow depending upon sash location.

b.) The air control valves are specified in Section 233600 which is attached.

c.) VFD shall maintain cfm and pressure from the ACV’s.

d.) Room pressure controls shall be like (Basis of Design): Setra Systems SRPM Series. The Space/Room Pressure Monitor shall be a true dead ended low differential pressure sensor and not a flow-based sensor. Each SRPM shall have a RGB backlight that clearly and visually indicates the status of the room pressure via a green display for normal, yellow for door status warning and red for alarm conditions. The unit shall be configurable through a touch screen menu driven display. The pressure display resolution shall be .0001” WC. The pressure display should have an averaging function to produce stable display outputs for “noisy” pressure environments. Each unit shall have a time delay feature settable through the Touch Screen interface to prevent false alarms. Each unit shall have a latch alarm feature so that alarms must be acknowledged and return to normal operating conditions before the alarm can be silenced. Each unit must be zero and span settings performable through a Touch Screen interface, have local LEDs for visual indication of normal and alarm conditions and local audible alarm, an alarm acknowledge button and a slider bar indication of the actual pressure relative to the alarm setpoints. Each unit shall have 2 levels of password protection, one for the supervisor to have total control and a lower level password for the operator to change room modes. The room modes shall be positive, negative or neutral. Each unit shall have an digital input for door status indication and an alarm relay output to signal a BAS system of an alarm condition or drive a remote annunciator, with 3 possible analog outputs, 4-20 ma, 0-5 VDC and 0-10 VDC and have BACnet communications MS/TP ASC. Units shall be CE, RoHS and CSA C22.2 No. 61010-1-04 safety compliant and shall have standard accuracy of +/-.5%FS and optional of +/-0.25%FS. System shall have door switch and stainless-steel pressure taps for reference and room air.

QUESTION #60: Scope indicated on Schematics differs from Scope on Point List (do not match for content, nomenclature, symbols, etc.)

1. Compare MQ-011 Points for AHU-1 to MQ-008 Detail A-CONTROL SCHEMATIC AHU-1

1. Compare MQ-011 Points for AHU-2 to MQ-009 Detail A-CONTROL SCHEMATIC AHU-2

1. Compare MQ-011 Points for BUILDING HEATING SYSTEM to MQ-010 Detail C-HEATING HOT WATER PUMP CONTROLS Please confirm that ECC Point List rules for scope compliance (Systems Control schematics are diagrammatic)

ANSWER:

a.) See attached sheet MQ008.

b.) See attached sheet MQ009.

c.) See attached sheet MQ011 and below:

d.) System control schematics are diagrammatic and indicate intent of the project.

QUESTION #61: MISC-ECC Monitoring are not in Point List (items often requested) Please clarify that no miscellaneous monitoring or control are required for the following:

1. No Control system monitoring of fire/smoke or smoke control damper (FSD or SD) or associated local relay

1. No Control or Monitoring for EF-1,2,3

1. No HEPA Filter monitoring (i.e. BSL3 space(s))

1. No Control of Monitoring for areas served by AC-1,2 (i.e. temperature, condensate drain pan, etc.)

1. No Temperature monitoring for Blood Storage, Coolers, Freezers, etc.

1. No Zone CO2 sensing (i.e. Waiting Room or other variable occupancy zones)

1. ELEC & PWR - no Points for Electric Metering, ATS, etc.

1. PLMG - no Points for sump pumps, etc.

1. SECTION 11 41 21 -WALK-IN COOLERS AND FREEZERS - no monitoring or alarms (i.e. AC-3, CU-4)

1. SECTION 11 53 13 - LABORATORY FUME HOODS - no monitoring or alarms

1. Lighting Control, Occupancy Sensing, or Motorized Window Shades

1. Other (unless added to re-issued ECC Points List)

ANSWER:

a.) Shown on MQ008 and MQ009 and MQ011.

b.) Now indicated on attached MQ011.

c.) Now indicated on attached MQ011.

d.) Now indicated on attached MQ011.

e.) See answer for Question #62.

f.) None required.

g.) See electrical plans.

h.) No requirement.

i.) See answer for Question #62.

j.) See answers for Question #59.

k.) See electrical plans.

l.) See MQ011.

QUESTION #62: MISC-Low Voltage Control Wiring are not noted (items often requested) Please clarify that no miscellaneous field wiring are required for the following:

1. AC-1,2 & CU-2,3 (heat pump systems are with pre-wired local control and no external safeties or interlocks required)

1. AC-3 & CU-4 (Walk-in Cooler/Enviro Chamber are with pre-wired local control and no external monitoring, safeties, or interlocks required)

1. Emergency Shower local audio/visual alarm (any Horn/Strobes are with pre-wired local control and no external monitoring, safeties, or interlocks required)

1. Other (Sump Pump, etc. are with pre-wired local control and no external monitoring, safeties, or interlocks required)

ANSWER: a.) DX coils and condensing / heat pump units will have safeties / controls some of which are factory mounted and some field mounted. Verify with Mechanical Contractor for temperature control work. Also see attached sheet MQ009.

b.) Walk-in cooler does require controls. See spec section 114121, paragraph 2.5.

c.) shower shall have local control only, no external controls.

d.) No other controls like sump pump are required.

QUESTION #63: Responsibility Table (pages 230923-4 & 5)-Confusion due to Items not in project:

1. Laboratory Environmental Controls

1. Fume hood controls

1. Medical gas panels

1. Laboratory Air Valves Please clarify by removing from Responsibility Table

ANSWER: a.) Lab environmental controls shown or specified.

b.) See question #59.

c.) Med gas panels shown on drawings and specified in spec section 226300.

d.) See question #59.

QUESTION #64: Responsibility Table (pages 230923-4 & 5)-Confusion due to item listed but specified elsewhere:

VFD indicated provided by 230923 but found specified under Section 26 29 11, MOTOR CONTROLLERS - 2.4 LOW-VOLTAGE VARIABLE SPEED MOTOR CONTROLLERS (VSMC) for:

AHU-1 SF 8 HP 460/3 phs (please locate on EP102) AHU-2 SF 20 HP 460/3 phs (please locate on EP102) AHU-2 EF 7.5 HP 460/3 phs (please locate on EP102) EF-1 2 HP 460/3 phs (please locate on EP102) HWP-1 3 HP 460/3 phs HWP-2 3 HP 460/3 phs Please locate on Electrical Power Plans and clarify that for the above

1. VFD are to be furnished by 230923 per spec 262911

1. VFD are to be received, handled on site & mounted per plans by DIV-26

1. VFD Start-up, commissioning & warranty are by supplier furnishing same.

ANSWER:

AHU-1 / AHU-2 SP and AHU-2 EF are furnished with the AHU and located on or near AHU’s. EF-1 is furnished with the EF and located near the EF. HWP-1/HWP 2 are shown on EP102 and specified under 262911.

a.) Who furnishes the VFD’s is up to the prime contractor. 26 29 11 specifies all motor controller construction and installation.

b.) Who furnishes the VFD’s is up to the prime contractor. 26 29 11 specifies all motor controller construction and installation.

c.) That is correct.

QUESTION #65: RE: SOLICITATION, BID ITEM 7: All work in BID ITEM 6 above except omit new DX Coil and new Condenser. Provide future tap in connections only.

Please clarify what DX coil and which Condenser are to be omitted by Bid Item 7 and provide references to pertinent

1. Specification Section(s)

1. EQT Schedule(s)

1. Sequence of Operation paragraphs for Base Bid operation vs changes if Bid Item 7 is accepted

1. Control or Monitoring Points on MQ-011 (or BACnet MSTP connectivity to ECC)

ANSWER: a.) 23-73-00.

b.) DX schedule for AHU-2:

c.) See MQ009.

d.) See MQ011.

QUESTION #66: Duct Humidifiers H-1,2 (associated with AHU-1,2) Please clarify by providing references to pertinent

1. Specification Section

1. EQT Schedule (add performance data including max steam flow and rated pressure)

1. Sequence of Operation paragraphs for Base Bid (include description of both automatic steam control valves shown on Detail F\MQ007-STEAM HUMIDIFIER - PIPING CONNECTIONS (MULTIPLE DISPERSION TUBES))

1. Control Points on MQ-011 (add On/Off valve control output)

ANSWER: a.) Specification Section 23-22-13.

b.) See attached schedule. Supply duct size for AHU-2 is 36” x 30”.

c.) Indicated on MQ-011.

d.) Indicated on MQ-011.

QUESTION #67: Plan MQ-003 PLATE AND FRAME HEAT EXCHANGER SCHEDULE HE-1 Please clarify by providing references to pertinent

a) Specification Section

b) EQT Schedule (add rated inlet pressure)

ANSWER: a.) Specification Section 23-22-13.

b.) 10 PSI

QUESTION #68: PLAN MQ-003, SPLIT SYSTEM HEAT PUMP SCHEDULE

Please clarify by providing references to pertinent Specification Section

ANSWER: Schedule shown is Basis of Design.

QUESTION #69: Cabinet Heater CH-1 on MQ-003 Please clarify location on Piping Plans

ANSWER: CH-1 is located on the first floorplan, near Column Line D/1.5 in Vestibule EC027.

QUESTION #70: On the duct plans part of the duct is noted as stainless steel. It is not clear what is stainless steel and what is not. Please denote the duct differently so it is clear.

ANSWER: The supply ducts from the air handlers to the first tee are to be stainless steel per Plan Note 4.

QUESTION #71: Can propress fittings be used on domestic water lines up to 2” in size?

ANSWER: No. Provide fittings per project specifications.

QUESTION #72: Can grooved fittings be utilized on the chilled water and hot water lines 2 ½” and larger?

ANSWER: Provide fittings per project specifications.

QUESTION #73: For planning and scheduling purposes, can you provide the expected date of award?

VA ANSWER: Anticipate award first week of September 2020.

QUESTION #74: Can you please provide the drawings in Revit (preferably) or CAD (less preferred) for coordination purposes?

ANSWER: Revit model will not be made available. CAD release document would need to be signed, only plans would be sent.

QUESTION #75: Is it possible to provide the final design documents in Revit so we can appropriately coordinate the work?

ANSWER: Revit model will not be made available

QUESTION #76: CD100 Note 20 says to Demo the existing tunnel and A101A, AD101 show the existing tunnel as existing and to remain. Please clarify.

ANSWER: Existing Tunnel is to remain and remain accessible except as required after hours.

QUESTION #77: On sheet A200/A201/A700, Window sizes for window 1 and window 3 do not match between the Window Schedule on A700 and those shown on elevations A200 / A201. Please confirm which sizes should be used.

ANSWER: The window size is correct as shown on the elevation for window type 1 and 3. The height of window type 1 and 3 is 5’-0”. The height for window type 2 is 3’-8”.

QUESTION #78: On sheet A700/AD101, Opening ESB006: Note 4 on AD101 reads new door with existing frame. Door schedule shows new door and frame. Please confirm what is needed for this opening.

ANSWER: Existing Frame to be patch/repair and reused. Prime and paint to match new door.

QUESTION #79: On sheet A700/AD101, Opening ESB006: Note 4 on AD101 reads new door with existing frame but does not mention door hardware. Is the hardware going to be reused or new? If new, please provide hardware set.

ANSWER: Provide new HDWR group 2.

QUESTION #80: On sheet A101B, There are (2) #5 windows shown on A101B that are not shown on the opening schedule. Please provide additional details and specifications for these windows. Are the frames going to be hollow metal or aluminum frames?

ANSWER: There is only one note 5 and one note 6 on sheet A101B both are noted correctly on the schedule sheet 700 and elevations sheet 201.

QUESTION #81: There is a note on the electrical drawings (EL100) that states that the temporary corridor in the tunnel is to be removed, however, I couldn’t not find anything on the architectural drawings that states to remove the temporary corridor. Can you please ask the AE to provide a revised architectural drawing that shows if this corridor is to be removed?

ANSWER: The temporary exterior tunnel to be removed in its entirety. The Interior temporary tunnel to have the temporary ramp and handrail removed. See Drawing below for more information.

QUESTION 82: Is the VA or the GC to furnish and install the walk in cooler (E018A) shown on A101B, as it is not clear on the drawings?

ANSWER: The walk-in cooler (E018A) shown on sheet A101B is to be provided by the GC.

QUESTION 83: In the specifications they show section 0922900 Gypsum Board but I do not find this section in the specs.

ANSWER: Specification Section 09 29 00, Gypsum Board is included in the amended specifications. See Amendment 0001 for Notice ID 36C25520R0073 QUESTION 84: In section 072726 Fluid Applied air Barrier they call out for 40 mil thickness. You cannot apply EIFS over any fluid applied barrier over 12 mil dry thickness. None of the EIFS manufactures will warranty the installation.

ANSWER: 40 mil is not required. Provide 12 mils (i.e. 0.30 mm, 0.012 in.) DFT. Change Spec section 072726-5 paragraph 2.3, A, 5. To “Thickness: Minimum 0.30 mm (12 mils) dry film thickness, applied in single continuous coat.

QUESTION 85: There is section 061663 Cementitious Sheathing in the specifications but every detail on the drawings calls out gypsum sheathing.

ANSWER: Cementitious Sheathing is not used as gypsum sheathing. See spec section 0922900 Gypsum Board.

QUESTION 86: The documents do not specify the intended building standard hardware or manufacturers that are to be used for locks and key systems. Can you please provide the locket manufacturer?

ANSWER: Change spec section to provide Mortise Lock and Latch Sets: Conform to ANSI/BHMA A156.13. Mortise locksets shall be series 1000, minimum Grade 1. Which is equal to Schlage L Series Grade 1 Mortise Lock. Meet or exceed ANSI/BHMA Grade 1 standard.

QUESTION 87: CD100 note 17 states to relocate the wood shed and all related utility connections. There is no other mention of these utilities on any of the other drawings. Please provide clarification as to what utilities are to be relocated and where the sheds are to be related.

ANSWER: Sheds are to be relocated as directed by the VA, verify the location with the COR.

QUESTION 88: CS100 note 17 note 16 say to relocate shed and related utilities, and relocate existing dumpsters. The MEP plans do not show where these are to be relocated or which utilities are existing. Please provide this information.

ANSWER: The sheds to not have utilities going to them.

QUESTION 89: There seems to be no spec section for the canopy hoods? Can one please be provided?

ANSWER: Refer to spec section:115313 LABORATORY FUME HOODS.

QUESTION 90: What types of fume hoods are required? Spec 11 53 13, Laboratory Fume Hoods, lists By-pass and Low velocity but does not list where to use them.

ANSWER: Bypass hoods are required.

QUESTION 91: Confirm fume hoods do not have integral blowers as listed in 11 53 13 1.3 G, related work.

ANSWER: Hoods do not have integral blowers.

The following RFIs all are from an electrical supplier regarding the electrical specifications/plans.

QUESTION 92: Please provide a spec for the LIS, MV Transformer and Switchboard for this job. It will be hard to bid this correctly – the official specs do not have this incorporated.

ANSWER: MV Transformer and switchboards in existing electrical room are existing to remain. New panel 42-DP-2-1 is to be circuit breaker style distribution panelboard. New panelboards on drawings are indicated with thicker line weight.

QUESTION 93: LIS Switch – Based on our design (or any manufacturer) we cannot turn this 90 degrees to fit in that existing room due or mount sideways like what is shown on the drawings.

ANSWER: Please clarify what the LIS switch is that is being referred to. New MV feeders to existing equipment in building and LV feeders to new panelboards is part of scope of work.

QUESTION 94: The Liquid Filled Transformer needs to be a Dry Type Transformer due to the fact that it is inside. A Liquid filled transformer would have a some type containment tray system underneath the transformer in case it leaks. Is this acceptable?

0. Also would need a biodegradable nonflammable fluid for indoor usage not mineral oil like what is shown on the one-line. Is this acceptable?

ANSWER: New low voltage transformer is to be dry type per specifications. No new liquid filled transformer is indicated on drawings or specifications.

QUESTION 95: question about Fire Sprinklers; can’t locate documentation of where the new fire sprinkler system attaches to an existing system, or attaches to a new system outside of existing one.

ANSWER: There is an existing 6” fire main in the basement of the existing building, approximately 100 feet to the west of where our new building attaches to the existing building. Field verify.

QUESTION 96: Is a geotechnical report in the area of this work available so bidders can get an understanding of the subsurface.

ANSWER: see response to Question #5. The geotechnical report was provided in Amendment 6 of the solicitation.

QUESTION 97: Can the existing building loads bearing on these foundations that require underpinning be provided.

ANSWER: Building Loads will not be provided. Existing building drawings are available upon request.

QUESTION 98: we will be providing pricing for the architectural sheet metal portion of work for this project. I have not been able to find the specs for the ACM panels. Are there specs for this work? If so, can you point me in the right direction?

ANSWER: See new spec section for aluminum composite panels aka ACM.

QUESTION 99: Concerning the mechanical louvers, will it be our responsibility to provide the head, sill, and jamb flashing for those?

ANSWER: Head, sill, and jamb flashing are required for open and closed mechanical louvers. GC shall coordinate which trade is responsible for each item.

End of questions that were asked.

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