Attch_7_-_Questions_and_Answers_9_Apr_15.pdf

FA2521-15-B-0002

Project DBEH 13-1588

QUESTIONS and ANSWERS Attachment 7

9 Apr 15

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page Drawing MC-301

Other (Specify) ___________________________

Question 1: Flag Note 2 indicates to install new condensing units on prefabricated roof curbs with stainless steel caps. Has structural engineering analysis been performed to ensure the existing joists that support the roof will also support the weight of a curb and condensing unit?

These roofs were constructed with light-weight panels and may not be of sufficient strength to support heavy A/C loads. Please provide structural information about the existing roof and underlying support structure.

ANSWER 1: As a value engineering item and to eliminate un-necessary roof penetrations the existing CU supports can be modified/extended as required for new condensing unit dimensions and pressure treated wood cribbing placed underneath far edge of supports resting on roof for additional support.

Other (Specify) ___________________________

Question 2: Regarding mounting the roof curb on the existing roof, the curb will have to be anchored in some manner to the underlying roofing support structure and not anchored to the roof. The roof will not provide sufficient anchorage for a new curb and A/C unit.

1. Is the existing support structure concrete beams or steel bar joists?

2. Shouldn’t the new curb be cut into the existing roof to rest on the existing underlayment roof support structure and not rest directly on the roof?

3. Please provide engineering information regarding the underlying support structure for the existing roof. Concrete beams, steel bar joists, size of beams or joists, spacing, etc.

4. Please provide detailed anchorage details for anchoring new curb and condensing unit to roof whether curb is placed directly on the roof or sat on existing underlying roof support structure.

ANSWER 2: As a value engineering item and to eliminate un-necessary roof penetrations the existing CU supports can be modified/extended as required for new condensing unit

Other (Specify) ___________________________

Question 3: Can the new condensing unit be placed on the existing condensing unit support structure instead of cutting into the existing roof? If the existing support structure needs to be modified to accommodate the new condensing unit, that would probably be better than cutting into a perfectly good roof.

ANSWER 3: As a value engineering item and to eliminate un-necessary roof penetrations the existing CU supports can be modified/extended as required for new condensing unit

SOW/Technical Specification/Drawings paragraph/page Drawing MC-502; Detail 3M-502

Other (Specify) ___________________________

Question 4: Detail 3M-502 shows an AHU support frame for AHU’s 1N and 1S. The Trane units specified are constructed with hanging points specifically designed to suspend their units.

In addition, Flag note 1 on Drawing MC-101 indicates to “support unit per manufacturer’s installation instructions.”

If we choose to price and furnish Trane AHU’s, can we use their hanging system for their AHU’s or do the new AHU’s have to be hung with the heavy steel suspension frames shown on M-502?

ANSWER 4: Per Flag note #1 on MC-101 AHU shall be mounted per manufacturer’s requirements.

SOW/Technical Specification/Drawings paragraph/page Drawing MC-101

Other (Specify) ___________________________

Question 5: Drawing seems to imply (by showing) that A/C system 1N has 4 refrigerant lines while 1S has two refrigerant lines. How many refrigerant lines are required for each unit?

ANSWER 5: Contractor in responsible for the number and sizing of the refrigerant lines based on manufacturer requirements of equipment submitted that meets specified capacities.

Other (Specify) ___________________________

Question 6: Drawing shows two refrigerant lines for both A/C 2N and 2S. How many refrigerant lines are actually required for each unit?

ANSWER 6: Contractor in responsible for the number and sizing of the refrigerant lines based on manufacturer requirements of equipment submitted that meets specified capacities.

SOW/Technical Specification/Drawings paragraph/page Drawing MD-101

Other (Specify) ___________________________

Question 7: Just as a clarification, Flag Note 8 indicates to demo existing supply and return diffusers. BUT, the flags are only pointing to a certain number of diffusers and not all of them.

It confuses things when the flag note points to, for example 13 out of 55 total diffusers. I will concede, in some places, the flag does indicate “Typ” while pointing to some of the diffusers, but not all 13 of the diffusers that the flag points to indicate “Typ”. It would have been clearer to indicate “Typ 55 Places” if all of the diffusers get removed. Just want to clarify.

Do all of the supply and return diffusers and grilles get removed and replaced with new or just the ones indicated by Flag Note 8? Question does not apply to 2nd floor since the entire air distribution system gets replaced anyway.

ANSWER 7: Demo “ALL” diffusers as indicated on plan and denoted in flag note #8.

IFB Section _NA_________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page _Summary of Work 01 11 00.00 55 /

1.2.3 Architectural

Other (Specify) ___________________________

Question 8: Scope of work (01 11 00.00 55 1.2.3) requires reuse of existing ceiling suspension system. Ceiling Spec (09 51 00 2.2) requires new. How is the contractor required to address this conflict?

ANSWER 8: Existing suspension system shall be re-used as much as possible. It is a possibility that some new hangers will have to be proved as specified in 09 51 00 2.2 due to the age of the building and suspension system.

SOW/Technical Specification/Drawings paragraph/page: Drwg A-001 Note 14___

Other (Specify) ___________________________

Question 9: _Note 14 on Sheet A-001 requires Contractor to relocate Building Occupants and Mission Specific Items, Equipment, and Supplies. 1st Floor Rooms were not accessible during the pre-bid walkthrough. What are the items to be relocated in the 1st Floor N and S Winds and where will the Contractor be allowed to temporarily store these items? What operations will be active during construction and will there be any required construction phasing/sequencing to maintain existing operations?

ANSWER 9: Discussions with building occupants has determined that relocation is not required. If that changes during construction the Government will relocate the occupants.

SOW/Technical Specification/Drawings paragraph/page Drwg AD-101 General Note 1 & 5_

Other (Specify) ___________________________

Question 10: Notes on AD Drwgs requires some End Items to be Recycled (Note 1) and some End Items to be Removed (Note 5). Can the Contractor be provided with a list of End Items to be Removed and Recycled and, if scheduled to be turned over to the contracting officer, where are they to be delivered?

ANSWER 10: All removed/demolished material becomes the contractor’s responsibility for disposal either through re-cycling or offsite landfill.

SOW/Technical Specification/Drawings paragraph/page Acoustical Ceilings 09 51 00 / Drwg AC-101 & 102 Note 1

Other (Specify) ___________________________

Question 11: Ceiling conditions above the existing drop ceilings of the 2nd Floor N and S Wings were confirmed during the pre-bid walkthrough. Accessibility to the 1st Floor N and S Wings was not allowed during the pre-bid walkthrough and above ceiling conditions (joist, beams, concrete, drywall, etc…) are not specified in the solicitation documents. What is the condition of the existing ceiling within the 1st Floor N and S wings so that the Contractor can determine how to suspend the new Acoustical Ceiling? What is the specification on the 2’x4’ tile proposed on the 2nd floor Ceiling Plans? Are Acoustical Tile Edges required to be Square (to match existing) or Tegular?

ANSWER 11: Existing ceiling conditions for Hangar G 1606:

1st Floor North and South: Acoustical lay in ceiling tiles suspended directly from joist structure that is space approximately 15” on center of joist running east and west.

2nd Floor North: Acoustical lay in ceiling tile suspended directly from structure above through and below gypsum hard ceiling located 26” above top of T supports for ceiling.

Total clearance form top of grid to bottom of GYP is 26” clear. ***North side only*** Sporadically attached to the gypsum board installed above he lay in ceiling there are 12x12 tectum tiles that shall not be disturb during construction. Contractor shall utilize existing openings and supports or make penetrations at areas 12x12 tile is not present. NOTE: No abatement is in scope for this area. The separation wall between the corridor and office spaces is a pre-insulated 1.5” metal panel wall existing opening can be re-used where capable new penetrations will be required per coordinated shop drawings

2nd Floor South: Acoustical lay in ceiling tile suspended directly from structure above through and below gypsum hard ceiling located 26” above top of T supports for suspended ceiling. Total clearance from top of grid to bottom of GYP above is 26” clear. There is no 12x12 tectum attached to this gypsum above and can be modified as needed for supports from structure above. The separation wall between the corridor and office spaces is a pre-insulated 1.5” metal panel wall existing opening can be re-used where capable new penetrations will be required per coordinated shop drawings.

SOW/Technical Specification/Drawings paragraph/page Paints and Coatings 09 90 00

Other (Specify) _Drywall__________________

Question 12: Paint specifications (3.13.1) calls for Exterior/Interior, Metal/Wood/Drywall Surfaces, and Concrete Surfaces to be painted. Plans require all penetrations (Gen Note 2 M- 002), damage from demolition (Note 4 AC-101), 1st Floor N. Wing ceiling perimeter trim (Note 6 AC-101), and ST. STL. Chase (Note 5 MC-101) to be painted. Can a Paint Scope be provided to the Contractor that may govern the plans and specifications?

ANSWER 12: All repairs shall match existing surface material and adjacent paint color if applicable. Paint specification is as specified in section 09 90 00 Paints and Coatings.

SOW/Technical Specification/Drawings paragraph/page Electric Drwg EC-102 Note 2

Other (Specify) ___________________

Question 13: Note 2 on Sheet EC-102 requires Contractor to provide power to new exhaust fan.

Are fans to be provided by others? Is this typical to locations that call out EF? What are the specifications/equipment schedule/quantity on any new Exhaust Fans that may be need to be provided by Contractor?

ANSWER 13: All exhaust fans are existing to remain for this project ED-102 demo note shall be disregarded.

SOW/Technical Specification/Drawings paragraph/page Electric Drwg EC-101 and 102

Other (Specify) ___________________

Question 14: New lighting is not required in the plans and specifications. Plans require to rehang existing lights. Will the Contractor be allowed to turn over project per a submitted existing condition report noting end items that are not operating?

ANSWER 14: Yes.

SOW/Technical Specification/Drawings paragraph/page Electric Drwg EC-101 and 102

Other (Specify) ___________________

Question 15: New lighting is not required in the plans and specifications. Plans require to rehang existing lights. Will the Contractor be allowed to turn over project per a submitted existing condition report noting end items that are not operating?

ANSWER 15: Yes.

SOW/Technical Specification/Drawings paragraph/page Fire Alarm 28 31 00.00 10 / Electric Drwg E-003

Other (Specify) ___________________

Question 16: Will the Contractor be responsible to bring existing Fire Alarm system up to current code and regulations or will just the smoke detectors be required to be installed into the existing system?

ANSWER 16: No., existing fire alarm system currently meets code.

SOW/Technical Specification/Drawings paragraph/page Temp Pest Control 01 57 16

Other (Specify) ___________________

Question 17: Is the Contractor required to provide Temp Pest Control per reference spec section?

ANSWER 17: No. Temp pest control not required.

SOW/Technical Specification/Drawings paragraph/page Gen Safety Requirements 01 35 26

Other (Specify) ___________________

Question 18: Will the Contractor be required to have a separate SSHO (Site Safety and Health Officer) or can the Project Superintend be allowed to act as the SSHO?

ANSWER 18: The superintendent can perform this function provided he/she has the proper certifications/credentials

SOW/Technical Specification/Drawings paragraph/page Drwg M-002 Note 26

Other (Specify) _Roofing_____________

Question 19: Note 26 on Sheet M-002 requires the Contractor to maintain the existing roof warranty. Who is the existing Roofing Contractor that provided the warranty? May the Contractor abandon the existing roof penetration and provided new?

ANSWER 19: The warranty is provided by Soprema and the roof was installed by National Roofing . Abandon in place and provide new penetrations is acceptable.

SOW/Technical Specification/Drawings paragraph/page Drwg MC-301 Plan View 1 & 2

Other (Specify) _N & S Wing Penthouse________

Question 20: Plan View 1 requires a New Intake Louver per Note 5. May the contractor use the existing louver that is in the same location that Plan View 1 requires a new 12x8 OA Intake Louver? In Plan View 2 Note 3 is referencing a wall penetrations for the 8x8 OA that appears to be incorrect, an existing louver doesn’t exist in this location. Is a new 12x8 OA Intake Louver per Note 5 required in this area?

ANSWER 20: Flag note #3 is mislabeled on Plan View 2. Controactor is responsible for providing and installing (2) new 12x8 louvers.

SOW/Technical Specification/Drawings paragraph/page Drwg MD-101 Note 5

Other (Specify) _1st Floor N Wing________

Question 21: The 1st floor was not available during the pre-bid walk through to confirm the conditions of the existing duct work and diffusers. The North Wing makes reference to the Diffusers (Note 5 between Columns JK & J) to remain. Will any of the existing flex duct or diffusers be required to remain?

ANSWER 21: Flag note #5 is for supply and return ductwork only. No supply and return “Diffusers” are to remain in this area Flag #5 arrow pointing to wrong area on DWG.

SOW/Technical Specification/Drawings paragraph/page Drwg MD-102

Other (Specify) _Door Grille________

Question 22: Door Grille (DG) are referenced throughout the 2nd Floor S Wing Mechanical Demo Plans. What is the Contractor required to do with the existing DGs?

ANSWER 22: Existing Door grilles to remain in place.

SOW/Technical Specification/Drawings paragraph/page Drwg AC-101 Note 6

Other (Specify) _Paint________

Question 23: Note 6 requires the existing drop ceiling wall angle to be left in place and painted.

What is the ceiling height of Room 106 & 116 and why is the trim piece required to remain?

ANSWER 23: Intentions are for any part of the existing perimeter trim and support that can get scratched or scuffed shall be painted. This is being left in place to prevent damage to existing wall.

SOW/Technical Specification/Drawings paragraph/page Paint and Coatings 09 90 00-1.3.2

Other (Specify) _SSPC QP 1________

Question 24: Specifications require painters to be certified to SSPC QP 1. May past performance/experience with similar projects on CCAFS and PAFB be sufficient to replace the SSPC QP 1 requirements?

ANSWER 24: This requirement can be deleted for this project.

IFB Section _52.236-27__ Paragraph _(b)________

SOW/Technical Specification/Drawings paragraph/page

Other (Specify) _________

Question 25: May the signed in sheet for the 3/25/15 site visit be posted to all Contractors?

ANSWER 25: Pre-bid site visit record of attendance dated 25 Mar 15 posted in Solicitation Amendment 1.

IFB Section Paragraph

SOW/Technical Specification/Drawings paragraph/page

1) Spec. 23 05 93 Para 1.5, 2) Spec. 23 08 00.00 10 Para 1.5, 3) Spec. 23 08 00.00 10 Para 1.3.2

Other (Specify)

Question 26: Spec reference 1) requires an independent T&B agency. Reference 2) requires a further independent commissioning agent. This seems to be substantial overkill for this relatively small project. Spec reference 3 requires commissioning “that meets the LEED NC Energy & Atmosphere (EA) Prerequisite 1, Fundamental Commissioning.” This standard does NOT require an independent commissioning agent for installations under 50,000SF. Please confirm if it would be acceptable for 1) the prime, or performing subcontractor, to perform T&B subject to an independent commissioning agent, 2) the prime, or performing subcontractor, to perform the commissioning (per Reference 3) subject to an independent T&B, 3) a single independent agency to perform the T&B and commissioning functions, or 4) the commissioning requirement may be waived completely.

ANSWER 26: Commissioning requirement cannot be waived for the project. Although in an effort to value engineer the project the independent requirement can be waived for the Commissioning Authority.

IFB Section I Paragraph

SOW/Technical Specification/Drawings paragraph/page

Other (Specify)

Question 27: FAR Clauses 52.219-6 and 52.219-14 are not applicable to this solicitation, 52.219-29 is correctly included.

ANSWER 27: FAR Clauses 52.219-6 and 52.219-14 are applicable and will remain in this solicitation.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page MD-102/MC-102

Other (Specify) ___________________________

Question 28: Drawings show a set of double doors on the 2nd floor toward the high bay. Are these doors accessible and usable by the contractor for bringing material to/from the 2nd floor with a lull, forklift, etc. from the high bay floor?

ANSWER 28: Yes

IFB Section Paragraph 1.3.2.

SOW/Technical Specification/Drawings paragraph/page Spec 09 90 00

Other (Specify)

Question 29: According to the Society for Protective Coatings (SSPC), there are NO painting contractors within Brevard County that possess the QP-1 certification called for in the referenced specification (not even the 45SW’s current IDIQ painting contractor). There are only a handful in the state of Florida and only ONE within 100 miles of CCAFS. This requirement is overly restrictive, especially considering the minimal amount of painting anticipated. Please confirm if this requirement may be waived.

ANSWER 29: This requirement can be deleted for this project.

SOW/Technical Specification/Drawings paragraph/page MC-301, flag note 2_____

Other (Specify) ___________________________

Question 30: New condensing units are to be installed on a new curb with SS caps. In order to accomplish this, we will need structural drawings for the structure below and information regarding the construction of the existing roofing to be cut and repaired associated with the installation. Also, the design engineer of record will have to confirm the loading on the existing structure as we expect it is light gauge trussing. Alternatively, we could modify the existing or provide new hot-dipped glav. stl. brackets and attach to the wall similar to the existing units.

ANSWER 30: As a value engineering item and to eliminate un-necessary roof penetrations the existing CU supports can be modified/extended as required for new condensing unit

SOW/Technical Specification/Drawings paragraph/page MC-102

Other (Specify) ___________________________

Question 31: Please confirm if any of the interior walls (2nd floor) extend to the structure and, thus, will have to be cut in order to install the duct runs shown. If so, please confirm the material of construction.

ANSWER 31: Existing ceiling conditions for Hangar G 1606:

1st Floor North and South: Acoustical lay in ceiling tiles suspended directly from joist structure that is space approximately 15” on center of joist running east and west.

2nd Floor North: Acoustical lay in ceiling tile suspended directly from structure above through and below gypsum hard ceiling located 26” above top of T supports for ceiling.

Total clearance form top of grid to bottom of GYP is 26” clear. ***North side only*** Sporadically attached to the gypsum board installed above he lay in ceiling there are 12x12 tectum tiles that shall not be disturb during construction. Contractor shall utilize existing openings and supports or make penetrations at areas 12x12 tile is not present. NOTE: No abatement is in scope for this area. The separation wall between the corridor and office spaces is a pre-insulated 1.5” metal panel wall existing opening can be re-used where capable new penetrations will be required per coordinated shop drawings

2nd Floor South: Acoustical lay in ceiling tile suspended directly from structure above through and below gypsum hard ceiling located 26” above top of T supports for suspended ceiling. Total clearance from top of grid to bottom of GYP above is 26” clear. There is no 12x12 tectum attached to this gypsum above and can be modified as needed for supports from structure above. The separation wall between the corridor and office spaces is a pre-insulated 1.5” metal panel wall existing opening can be re-used where capable new penetrations will be required per coordinated shop drawings.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page A-001 Note 14

Other (Specify) ___________________________

Question 32: Note requires contractor to provide moving services for the “relocation of building occupants and mission specific items, equipment, and supplies”. Please confirm if this is valid and, if so: 1) quantify the amount of items, equipment, and supplies to be relocated, 2) identify the temporary storage location of these items (and whether gov. or contractor provided), and 3) confirm if items are to be reinstalled by the contractor prior to the end of the project.

ANSWER 32: Discussions with building occupants has determined that relocation is not required. If that changes during construction the Government will relocate the occupants.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page AC-101 Flag Note 6

Other (Specify) ___________________________

Question 33: Please clarify the intent of this note. Are we painting just the angle on which the acoustical ceiling is installed or are we actually painting the remaining trim piece of acoustical ceiling (or both).

ANSWER 33: Both, intentions are for any part of the existing perimeter trim and support that can get scratched or scuffed shall be painted.

SOW/Technical Specification/Drawings paragraph/page MD-103 Flag Note 3

Other (Specify) ___________________________

Question 34: The existing refrigerant lines pass through the roofing material and would require patching of the roofing material to remove. Would it be acceptable to seal the existing lines on both sides of the penetration and AIP rather than cut into the roofing material?

ANSWER 34: Seal existing lines and abandon in place is acceptable.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page MD-103 Flag Note 5

Other (Specify) ___________________________

Question 35: Would it be acceptable to use the existing penetrations and run the refrigerant lines up the wall inside the mechanical room rather than on the outside of the building.

ANSWER 35: Route new refrigerant lines above roof into penthouse to eliminate penetrating existing roofing.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page MD-101, MC-301

Other (Specify) ___________________________

Question 36: The circle/P and circle/R symbols are likely intended to be a photoelectric smoke detector and shutdown relay, but don’t match the symbols on M-001, please confirm.

ANSWER 36: Need clarification only place the symbol referenced appears is on ED drawings and refers to photoelectric smoke detectors.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page MC-301 Flag Note 1

Other (Specify) ___________________________

Question 37: Note indicates to install new AHUs on existing concrete pad…these units are installed on a floor stand, there is no existing concrete pad. Please confirm if the contractor may reuse the existing floor stands.

ANSWER 37: New AHU’s shall be mounted on base rail with housed spring isolation.

SOW/Technical Specification/Drawings paragraph/page M-502 Detail 3

Other (Specify) ___________________________

Question 38: If this detail is to be used, the members have not been sized by the design agency.

Please confirm if the manufacturer’s recommended mounting method for horizontal installation may be used in lieu of this detail.

ANSWER 38: Per Flag note #1 on MC-101 AHU shall be mounted per manufacturer’s requirements.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page M-601 AHU/CU Schedules

Other (Specify) ___________________________

Question 39: Please confirm which notes apply to which units. For example, Note 3 only applies to units AHU-2N and AHU-2S. If units are to be provided with hot-gas reheat/bypass, please confirm the basis of operation as this is not mentioned on M-602/M-604.

ANSWER 39: Per DWG M-604 hot gas by-pass/ reheat is only required on the two constant volume units AHU-1N & AHU-1S. Per DWG M-602 VFD’s are only required for variable volume AHU-2N & AHU-2S.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page M-602

Other (Specify) ___________________________

Question 40:

#3 – “maintain 500 cfm of outside air”, OA design is 300 cfm per M-601

#5 – “interlocked exhaust fan EF-1 & EF-2”. The only exhaust fans with an air-path connection to this space are the bathroom exhaust fans. I don’t think that is what was intended and, given the very small amount of OA provided, interlocking with an EF(s) shouldn’t be necessary.

#6 – o See above regarding EF-1 & EF-2 o “Minimum 1,000 CFM (adjustable) of ventilation air”, OA design is 300 cfm per M-o “CO2 sensor in room 105”, room 105 is not served by these units o “Maximum 2,300 cfm (adjustable) of outside air”, OA design is 300 cfm per M-601 o It seems as if the intent of the design is a constant ventilation and NOT demand control ventilation based on CO2 sensors

#7 – Please confirm that an emergency shutdown is required and where it is to be located (I don’t think they were intended for Rm. 105 for these 2nd floor units on both sides of the hangar). If required, please clarify if there are four (one for each unit in a designated location) or two (one for each side of the hangar).

Given the small amount of OA provided, may we delete the OA filter and DPT shown?

ANSWER 40: See revised M-602 attached.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page M-604

Other (Specify) ___________________________

Question 41:

#2 – system description mentions an automatic damper in the return air path. This item is not shown in the diagram and should not be necessary for this constant volume unit.

#3 – There are no exhaust fans that have a direct air path to the space served by these units.

#4 – If required, please confirm the location of the emergency shutdown for each side of the hangar.

#8 & #10 also make reference to exhaust fans and return air dampers.

ANSWER 41: Return air path damper and exhaust fans for AHU-1N & 1S can be disregarded. Emergency shutdown is required and shall be located in rooms 106 & 115.

SOW/Technical Specification/Drawings paragraph/page ED-101, Flag note 1

Other (Specify) ___________________________

Question 42: Please confirm the approximate location of the tap from the wireway that is the “source” to determine the extent of demo. Also, why are there four of these on each side? We assume one for the AHU, one for the CU, and one for the duct heater. Are there two for the CU in the same circuit (one inside and one outside) or is the 4th one serving the 2nd floor AHU since there isn’t one indicated there on ED-103?

ANSWER 42: The wireway where the tap is made is directly below the disconnect switches in the mechanical room.

One disconnect switch feeds the AHU and heat in the first floor mechanical room, one disconnect switch feeds 2nd floor AHU and heat, one disconnect switch feeds the 2nd floor condenser unit and the last disconnect switch feeds the 1st floor condenser unit.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page ED-101 Flag note 2 & ED-103

Other (Specify) ___________________________

Question 43: ED-101-Please confirm if the existing F/A conduit and wiring for the duct detectors may be reused rather than removing and reinstalling across the high-bay to the F/A panel in the NW corner. Please confirm that the duct detectors for AC-2 and AC-4 (ED-103) are also to be removed and, similarly, if the existing FA conduit and wiring may be reused.

ANSWER 43: All existing duct detectors shall be removed and reinstalled. Existing fire alarm conduit and wiring may be reused.

SOW/Technical Specification/Drawings paragraph/page ED-102 & MD-102, Flag notes 1 also EC-102 Flag note 2 & MC-102

Other (Specify) ___________________________

Question 44: ED-102 says to demo (Typ 4?) exhaust fans. MD-102 says existing exhaust fans to remain and there are no new exhaust fans included in the M-601 equipment schedule.

Similarly, EC-102 refers to “new exhaust fan” and MC-102 shows them as existing to remain.

Please clarify.

ANSWER 44: All exhaust fans are existing to remain for this project ED-102 demo note shall be disregarded.

SOW/Technical Specification/Drawings paragraph/page ED-103 & MD-103, Flag notes 1 & 2

Other (Specify) ___________________________

Question 45: ED-103 Flag Note 1 says “existing conduit may be reused if free of cracks and abrasions”, MD-103 says to remove all conduits and conductors. Same for Flag Note 2. Please identify the location of the “source” to determine the extent of demo.

ANSWER 45: Remove all existing conduit and conductors associated with equipment being removed.

SOW/Technical Specification/Drawings paragraph/page EC-102, Flag note 4

Other (Specify) ___________________________

Question 46: There are no drawings that confirm the dimensions of the high bay (width across and height). Please confirm this data including the approximate height of the new conduit across the high bay so that associated costs can be determined.

ANSWER 46: Distance from inside face of North wall to inside face of South wall is 130’ high bay is approximately 35’ from finished floor to bottom of structure.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page E-601, E-602, M-601

Other (Specify) ___________________________

Question 47: E-602 identifies service to all four CUs as 208V. M-601 identifies the units to be purchased as 460V. Please confirm service, conduit, and conductor sizes. Also, please confirm the amperage rating for the disconnects shown on E-601 against the equipment scheduled on M- 601.

ANSWER 47: All mechanical equipment shall be 460/3 as scheduled, E-602 has incorrect voltage listed, E-601 single line is correct and still valid for this project.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page

Other (Specify) General

Question 48: Please confirm the bar joist spacing of the existing structure so that we can best determine type/quantity of duct hangars to plan.

ANSWER 48: Bar joist spacing is approximately 15” on center running east to west.

IFB Section Paragraph

SOW/Technical Specification/Drawings paragraph/page AD101 and AD102 Flagnote 1

Other (Specify)

Question 49: Flagnote 1 states to see subsequent drawings for any items to remain and to be suspended in place. The electrical drawings do not address removal or supporting existing electrical items. Will the contractor be responsible for temporarily supporting the existing light fixtures for removal and replacement of ceiling grid.

ANSWER 49: Per electrical note # 15 on E-002 contractor is responsible for protection of all existing utilities.

IFB Section Paragraph

SOW/Technical Specification/Drawings paragraph/page AC-102 (Typ. Light Installation Detail)

Other (Specify)

Question 50: 1) Do the existing light fixtures have independent supports per the detail. 2) If the fixtures are not currently supported will the contractor be responsible for installing wire hangers.

ANSWER 50: Per electrical note # 15 on E-002 contractor is responsible for protection of all existing utilities. Installation of new ceiling grid and ceiling mounted fixtures existing and new shall be as specified.

IFB Section __________ Paragraph _________

SOW/Technical Specification/Drawings paragraph/page: Division 26 2.20 Surge Protective Devices on Panels

Other (Specify) ___________________________

Question 51: Will Surge Protective Devices be required for the new electrical panels P-6 and P-

7. This is not shown on the electrical drawings.?

ANSWER 51: Yes, surge protection is required for panels P-6 and P-7.

IFB Section

SOW/Technical Specification/Drawings paragraph/page

Other (Specify) General

Question 52: Drawings show the North and South wings per scale however do not show the distance the electrical contractor will need to run a new feeder above highbay. 1) What is the distance across the highbay? 2) What is the height to the deck of the highbay?

ANSWER 52: Distance from inside face of North wall to inside face of South wall is 130’ high bay is approximately 35’ from finished floor to bottom of structure.

SOW/Technical Specification/Drawings paragraph/page EC-101, EC-103 and E-601_____

Other (Specify) ___________________________

Question 53: Electrical drawings show new equipment on North and South sides fed from an existing 800A bus tap wire way. Where are the North and South 800A bus tap wireways located?

ANSWER 53: Drawing is mislabeled. Equipment is fed from a feeder tap in the first floor mechanical room. Feeder tap will be from the wireway located below the disconnect switches in the first floor mechanical room.

SOW/Technical Specification/Drawings paragraph/page ____E601_______

Other (Specify) ___________________________

Question 54: Sheet E601 depicts 2- 277/480V 3 Phase 4 wire Wireways. The Wireways are not depicted on the plans. We need to know the location so we can determine the length of the conduit runs to each respective units.

ANSWER 54: Equipment is fed from a feeder tap in the first floor mechanical room.

Feeder tap will be from the wireway located below the disconnect switches in the first floor mechanical room.