HomeMy WebLinkAboutAddendum 2 CORNELL UNIVERSITY WING HALL, SPACE SCIENCES, FACILITIES CONTRACTS PLANT BREEDING LOVE LAB 121 HUMPHREYS SERVICE BUILDING ELECTRIC SERVICE ENTRANCE ITHACA, NEW YORK 14853-3701 REPLACEMENT ADDENDUM NO. 2 February 19, 2020 This Addendum contains changes to the requirements of the Contract Documents and Specifications. Such changes are to be incorporated into the Construction Documents and shall apply to the work with the same meaning and force as if they had been included in the original document. Wherever this Addendum modifies a portion of a paragraph of the specifications or a portion of any Drawing, the remainder of the Paragraph or Drawing shall remain in force. NOTE: Provisions of all Contract Documents apply. Item 1. Attached is the Pre-bid Sign-in Sheet for reference only. DRAWINGS Item 2. Plant Breeding Love Lab - Drawing E-101, Keyed Notes Phase 1 DELETE Keyed Note 3 in its entirety. REPLACE with 3. PROVIDE 15-KV PRIMARY FEEDER IN SCHEDULE 80 PVC CONDUIT FROM TEMPORARY TRANSFORMER TO EXISTING MEDIUM VOLTAGE SWITCH. COIL UP AND TAG FOR CONNECTION IN NEXT PHASE. Item 3. Plant Breeding Love Lab - Drawing E-101, Keyed Notes Phase 1 DELETE Keyed Note 4 in its entirety. REPLACE with 4. PROVIDE 208V SECONDARY FEEDER IN SCHEDULE 80 PVC CONDUIT. RUN CONDUIT ALONG SOUTH WALL OVER TO EAST WALL AND NIPPLE THROUGH TO EXISTING CURRENT TRANSFORMER CABINET IN ROOM 10060. TAG CONDUCTORS FOR CONNECTION IN NEXT PHASE. Item 4. Space Sciences - Drawing E-001, SERVICE SHUTDOWN SCHEDULE ADD Note #8 to Phase #2, #4, and #6 to read as follows: 8. CONTRACTOR TO PROVIDE A 100KW PORTABLE GENERATOR AND ALL CABLING REQUIRED TO BACKUP THE DATA CLOSETS ON THE BASEMENTAND FOURTH FLOORS. CONTRACTOR TO FIELD VERIFY WHERE THE DATA CLOSETS ARE FED FROM PRIOR TO THE SCHEDULED SHUTDOWN.
Wing Hall, Space Sciences, Plant Breeding Love Lab Electric Service Entrance Replacement Addendum No. 2 February 19, 2020 Page 2
Item 5. Space Sciences - Drawing E-108, Keyed Construction Notes DELETE Keyed Note 5 in its entirety. REPLACE with 5. CONTRACTOR TO DISCONNECT AND REMOVE THE 150KW NATURAL GAS GENERATOR, INCLUDING THE EXHAUST PIPING, NATURAL GAS PIPING, COOLANT WATER PIPING, AND THE REMOTE RADIATOR PIPING. REMOVE ALL GENERATOR START CIRCUITRY TO THE TRANSFER SWITCHES (FIRE PUMP AND ATS-EM). CONCRETE EQUIPMENT PAD TO REMAIN. Item 6. Space Sciences - Drawing E-108, Keyed Construction Notes DELETE Keyed Note 6 in its entirety. REPLACE with 6. CONTRACTOR TO DISCONNECT AND REMOVE THE GENERATOR REMOTE RADIATOR. REMOVE THE CONCRETE EQUIPMENT PAD AND RESTORE SURFACE WITH GRAVEL. REMOVE (2) WATER PIPES AND ELECTRIC CIRCUIT FOR PUMP AND PATCH BRICK WITH NEW BRICK AND COLORED MORTAR TO MATCH EXISTING BRICK. REFER TO ARCHITECTURAL DRAWINGS AND DETAIL #1/A-101 FOR ADDITIONAL INFORMATION. REMOVE THE REMOTE RADIATOR PUMP MOTOR STARTER LOCATED ON THE WEST WALL OF THE FIRE PUMP ROOM. Item 7. Space Sciences - Drawing E-108, Keyed Construction Notes ADD Keyed Note 16 16. REMOVE 2” GENERATOR NATURAL GAS PIPING AND ASSOCIATED HANGERS/SUPPORTS BACK TO ISOLATION VALVE AT MAIN. PROVIDE 2” CAP AFTER ISOLATION VALVE. APPROXIMATE QUANTITY OF NATURAL GAS PIPING TO BE REMOVED IS 30-LINEAL FEET. Item 8. Space Sciences - Drawing E-110, One-Line Riser Diagram DELETE Feeder Size between Transformer T2 and the 480V, 400A Main Circuit Breaker, “4#500 KCMIL, 1#1/0GND, 4”C” REPLACE with (2 SETS) 4#3/0, 1#1/0G, 8x8 METAL WIREWAY.
Wing Hall, Space Sciences, Plant Breeding Love Lab Electric Service Entrance Replacement Addendum No. 2 February 19, 2020 Page 3
Item 9. Space Sciences - Drawing E-114, PANEL HNMDP-B1 SCHEDULE ADD a circuit breaker at Spaces #25/27/29 to read as follows: 25/27/29: 30-AMP, 3-POLE, SURGE PROTECTIVE DEVICE Item 10. RFI Questions and Clarifications See attached RFI Log (Items 1 – 3) Attachments: Pre-Bid Sign-in Sheet RFI Log (Items 1 – 3) ****END OF ADDENDUM****
PROJECT: Wing Hall, Space Sciences, Plant Breeding Love Lab Electric Service Entrance Replacement Date: February 19, 2020
RFI Form
RFI/Page/
Response Dwg./Spec./Rep.Section/Design Team
Index Number Paragraph/Topic RFI Response
1 E-101 Temporary
Conduits
Are the temporary conduits feeding the exterior temporary
pad mount transformers required to be GRC or will PVC be
acceptable considering they are temporary?
Refer to Addendum No. 2, Item 2.
2 E-102 Existing
Transformer oil
Can we clarify if the oil in the 3 existing transformers contain PCB's. I have reached out to some vendors to remove the oil
and and they need to know the parts per million of the PCB in
the oil. Maybe we can assume the oil is Non-PCB and if the
testing comes back PCB containing we can address it as a
change-order.
Existing transformers will need to be tested during construction, refer to Drawing E-102, Note 4.
3 General Love Lab Transformers
Do the documents show how many gallons of oil are in the transformers?Plant Breeding Love Lab Transformers have approximately a 30-gallon capacity each.