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CORNELL UNIVERSITY CARPENTER HALL B05
FACILITIES CONTRACTS SYSTEMS ENGINEERING LAB
121 HUMPHREYS SERVICE BUILDING CODE COMPLIANCE
ITHACA, NEW YORK 14853-3701
POST BID BULLETIN NO. 3
MAY 24, 2019
This Post Bid Bulletin 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.
Thank you for your recent bid for the above referenced project. All bids received exceeded the Owner’s
Construction Budget and we must explore other options for this project.
This Post Bid Bulletin supersedes Post Bid Bulletin No. 1 and 2 entirely.
Please email the responses to Facilities Contracts (FacilitiesContracts@cornell.edu) no later than
2:00 PM on May 29, 2019 to aid Cornell in its review and approval process.
A. Drawing M2.01
Item 1. REVISE supply duct layout to include VAV boxes for the smaller zones.
Item 2. REVISE Fan F-2 location, and partition exhaust plenum box to avoid any
pressure/air stream mixing.
Item 3. ADD turning vanes in all rectangular elbows.
Item 4. DELETE Deduct Alternate 08 – Storm Drainage and Associated Piping,
Fittings, & Accessories. Refer to original bid document. The Owner will not be
accepting this Alternate.
B. Drawing M4.01
Item 5. ADD Variable Air Volume Terminal Schedule.
Item 6. DELETE VAV diffusers from the Diffuser, Register and Grille Schedule.
C. Drawing M5.01
Item 7. DELETE outside air damper at AHU.
Item 8. ADD VAV boxes on control schematic.
Carpenter Hall B05 Systems Engineering Lab Code Compliance
Post Bid Bulletin No. 3
May 24, 2019
Page 2
Attachments: Drawing M2.01
Drawing M4.01
Drawing M5.01
****END OF POST BID BULLETIN****
REVISED BASE BID $__________________________
IN THE SPACE ABOVE, PROVIDE A REVISED BASE BID FOR THE ABOVE STATED
MODIFICATIONS.
Andrew R. Mancini Associates
Company
Signature
Americo DiCamillo – President
Printed Name and Title
_______________________________
Date
DN. ...LKJH764.5354GFEDD.57.5C.7EXSTAHUCAPCAPx32"42"P-1CONNECT HWS/R TO EXISTING 4" HWS/R PROVIDE PUMP AND CONTROL VALVEP-2CONNECT CWS/R TO EXISTING CWS/R LOW POINT DRAINS. PROVIDE NEW LOW POINT DRAINS. PROVIDE PUMP AND CONTROL VALVE.PROVIDE BTU METER MONITORED THROUGH BAS. SEE DETAIL SHEET FOR ADDITIONAL INFORMATION.F-1AHU-136x30x72" EXHAUST PLENUM, ACOUSTICALLY LINED36"x18"36"x18"18"x12"16"ø1 1/2" HWS1 1/2" HWRL-1PROVIDE FLOOR DRAIN. CONNECT TO NEW DRAIN PIPINGPROVIDE DUST COLLECTION HOOD FOR MITER SAW. PROVIDE DUST COLLECTOR IN MECHANICAL ROOM WITH 5" DUCTED CONNECTION TO HOOD.10" LASER CUTTER EXHAUST DUCTF-2Meeting Room 05B05GLoungeB05FMeeting Room 04B05EMeeting Room 03B05DMeeting Room 02B05CMeeting Room 01B05BMech WorkshopB05HSystems EngineeringLabB05Meeting Room 06B05JR-A420 CFMTYP.5M3.013M3.014" FOOTER DRAIN (E)EXISTING 4" FOOTER DRAINL-2NEW 4" FOOTER DRAIN ROUTE AROUND NEW STAIR2M3.011M3.01R-B 170 CFMR-B 170 CFMPROVIDE VD (TYP)8"øG-A 340 CFMG-A 240 CFMG-A 220 CFMG-A 220 CFMG-A 300 CFMPROVIDE VD (TYP)R-B150 CFMR-B150 CFMPROVIDE VD (TYP)R-B180 CFMR-B180 CFMR-B180 CFMR-C220 CFMR-C220 CFMR-C240 CFM36"x18"36"x18"1 1/2" HWS1 1/2" HWR2 1/2" CHWS2 1/2" CHWR2 1/2" CHWR2 1/2" CHWS4M3.01EXHAUST PLENUM, ACOUSTICALLY LINEDG-B550 CFMACOUSTICALLY LINE ALL RETURN DUCTWORK IN MEETING ROOM 01, 02, 03, & 04.ACOUSTICALLY LINE ALL SUPPLY BRANCH DUCTWORK SERVING MEETING ROOM 01, 02, 03, & 04.12"x6"12"x6"14"ø12"x6"12"x6"12"x6"CONTROL DAMPERCONTROL DAMPERR-C INSTALLED IN CEILING OF B05H400 CFMG-A INSTALLED IN CEILING OF B05H400 CFMD-A 320 CFM16"øG-C850 CFM PROVIDE VD (TYP)TS(AHU-1)CAP EXISTING FITTINGR-A 50 CFMR-A 50 CFMR-A 50 CFM6M3.01VD (TYP)TSTSTSTSTSTSBALANCE VALVE, BALANCE FLOW IN CROSSOVER LOOP UNTIL HWS TO AHU IS 130 DEG FDN TO LASER CUTTERPROVIDE WYE FITTING AND 2- 4" DUCTED CONNECTIONSTransformer VaultB04Mechanical RoomB06StorageB05AR-A420 CFMR-A420 CFMR-A420 CFMR-A420 CFMR-A420 CFMR-A420 CFMR-A420 CFMG-C850 CFM PROVIDE VD (TYP)G-C850 CFM PROVIDE VD (TYP)GENERAL NOTE:COORDINATE SUSPENSION ATTACHMENT POINTS WITH ACOUSTICAL PANEL LAYOUT.14"ø12"ø10"øTYP. 81SK-M21SK-M15" STORM DRAIN2" PUMPED DRAIN DISCHARGE2" PUMPED DRAIN DISCHARGE4" UNDERGROUND1SK-M42SK-M410" LASER CUTTER EXHAUST DUCTF-210"ø10"ø10"ø10"ø 10"ø5"ø5"ø5"ø10"ø10"ø6"ø8"ø10"ø12"ø10"ø10"ø12"ø36"x18"10"ø10"ø12"ø10"x8" 6"ø14"ø6"ø10"øVAV-BVAV-CVAV-AVAV-AVAV-AVAV-BPARTITION PLENUM TO SEPARATE EXHAUST AIR STREAMSEXCELSIROPETROSPAPATHOMOPO U L O S 089554L I C E N S E DPROFESSIONALENGINEERSTATEOFNEWYORK Sheet Number45 LEWIS STREET BINGHAMTON, NY 13901607.217.7013www.L2studioarch.comOwner:Project Address:Professional Seal:RevisionsNOTICE: It is a violation of the law for any person, unless acting under the direction of a licensed architect, to alter this Drawing in any way. If alterations are made to this Drawing, when bearing the seal of an architect, the altering party shall affix their own professional seal to his/her revisions, and add the notation "altered by" followed by his/her signature and the date of such alteration, and a specific written description of the alteration(s) made.FINAL BID SETSheet TitleConsultant:49 COURT STREETP.O. BOX 1980BINGHAMTON, NY 13902TEL: 607-723-9421MJINC.COMCarpenter Hall B05 Systems Engineering Lab CodeComplianceCornell University313 Campus RdIthaca, NY 14850Date: 05.01.2019B05 HVAC RENOVATION PLANM2.01Project Number: 18.007PLANNORTHNo. Description Date2 Rev -2 VAV Terminals 05.14.20192222
LOUVER - LOUVER/DAMPER SCHEDULEUNIT NO.CFMNOTESDESIGN BASISLOCATIONSYSTEM SERVEDSERVICEDIMENSIONShieght"width"L-16000B 05AHU-1INTAKE48321, 2ELF375DFLL-25500B 05F-1/F-2EXHAUST42321, 3ELF375DFLNOTES: 1. COORDINATE ROUGH OPENING SIZE AND LOCATION WITH EXISTING FOUNDATION WALL DEMOLITION. 2. PROVIDE FRAME WITH FLANGE AT EXTERIOR FACE. 3. PROVIDE FRAME WITHOUT FLANGE AT EXTERIOR FACE.UNITDIFFUSER, REGISTERS & GRILLE SCHEDULESERVICEMAX. NCFACESIZE(INCH)DESIGN BASISNOTESMAX. S.P.(IN W.G.)ARRANGEMENTMAX. CFMNECKSIZE(INCH)R-ASUPPLY19-3/4 x 13-3/418x12600180.05SIDEWALL/DUCTTITUS 300 RL-R-BSUPPLY21-3/4 x 7-3/420x6240220.05SIDEWALL/DUCTTITUS 300 RL-G-ARETURN25-3/4 x 7-3/424x6500180.05SIDEWALL/DUCTTITUS 350 RL-R-CSUPPLY25-3/4 x 7-3/424x6500220.05SIDEWALL/DUCTTITUS 300 RL-G-BEXHAUST73-3/4 x 25-3/472x245500180.05SIDEWALL/DUCTTITUS 350 RL-D-ASUPPLY2712400180.05DUCTTITUS TMRA-G-CRETURN25-3/4 x 13-3/424x12900180.05SIDEWALL/DUCTTITUS 350 RL-NOTES: 1. -AIR HANDLING UNIT SCHEDULEUNIT NO.MIN. O.A. C.F.M.NOTESDESIGN BASISSUPPLY FANVOLT/PHASEH.P.FAN R.P.M.T.S.P.LOCATIONARRANGEMENTPHYSICAL PROPERTIESLENGTH"WIDTH"HEIGHT"SUPPLY AIR C.F.M.COOLING/HEATINGWEIGHT LBS.UNIT MOPUNIT FLAMOUNTINGHOT WATER COILMBHGPMEWT/LWTTOTALMAT/LATCHILLED WATER COILMBHGPMEWT/LWTTOTAL/SENSIBLELDB/LWBFT-H20WPDFT-H20WPDAHU-1B 0561001810305.620130/9946/93252.4/154.61.3350.347/5953.8/53.7208/37.518003.635.028.1INDOOR143PLATFORM66.5452109TRANE CSAA012-6.66NOTES: 1. UNIT CONTROLLED BY VFD. ROWS4RPMPUMP SCHEDULEHPGPMSYSTEM SERVEDFT. OF HEADCAPACITYUNIT NO.MOTOR DATADESIGN BASISNOTESLOCATIONVOLTS/PHASEUNIT MCAUNIT MOPCONN. POINTSELECTRICALARRANGEMENTP-2P-1MECHANICAL ROOMHOT WATER COIL20INLINE201/63476208/12.91BELL & GOSSETT ECOCIRC XL 36-45NOTES: 1. PUMP SHALL BE PROVIDED WITH ECM MOTOR AND BACNET CONTROL INTERFACE1CHILLED WATER COIL50INLINE2012149208/111MECHANICAL ROOMBELL & GOSSETT ECOCIRC XL 65-1301510.420VOLTS/PHASEEXHAUST FAN SCHEDULEUNIT NO.AREA SERVEDHPTYPEDESIGN BASISDRIVENOTESLOCATIONCONN. POINTSELECTRICAL(in)LENGTHROOF OPG.ROOF OPG.WIDTH(in)PHYSICAL PROPERTIESLENGTH"WIDTH"HEIGHT"SONESFAN SPEEDTOTALC.F.M.RPMS.P.PERFORMANCEWEIGHT LBS.F-1B 05B 05208/33/4113.512260.35500INLINEBELTN/A3738.1338.13241GREENHECK BSQ-240-7-F-2LASER CUTTERB 05120/11/4113.417090.75650INLINEDIRECT21151548-GREENHECK SQ-99-VGN/AN/AN/ANOTES: 1. FAN CONTROLLED BY VFD. 2. FAN CONTROLLED BY MANUAL SWITCH.VARIABLE AIR VOLUME TERMINAL SCHEDULESYSTEM SERVEDUNIT NO.CFMNOTESDESIGN BASISLOCATION(in)INLETOUTLET(in)DAMPERVAV-ASEE PLANAHU-110024058X10ELECTRICTRANE MINMAXVAV-BSEE PLAN1503406ELECTRICTRANE VAV-CSEE PLAN2005408ELECTRICTRANE AHU-1AHU-18X108X10EXCELSIROPETROSPAPATHOMOPO U L O S 089554L I C E N S E DPROFESSIONALENGINEERSTATEOFNEWYORK Sheet Number45 LEWIS STREET BINGHAMTON, NY 13901607.217.7013www.L2studioarch.comOwner:Project Address:Professional Seal:RevisionsNOTICE: It is a violation of the law for any person, unless acting under the direction of a licensed architect, to alter this Drawing in any way. If alterations are made to this Drawing, when bearing the seal of an architect, the altering party shall affix their own professional seal to his/her revisions, and add the notation "altered by" followed by his/her signature and the date of such alteration, and a specific written description of the alteration(s) made.FINAL BID SETSheet TitleConsultant:49 COURT STREETP.O. BOX 1980BINGHAMTON, NY 13902TEL: 607-723-9421MJINC.COMCarpenter Hall B05 Systems Engineering Lab CodeComplianceCornell University313 Campus RdIthaca, NY 14850Date: 05.01.2019HVAC SCHEDULESM4.01Project Number: 18.007No. Description Date2 Rev -2 VAV Terminals 05.14.20192
BI - Supply Air Smoke DetectorCHWSCHWRCHWAI - Return Air Carbon Dioxide PPMCO2BI - Return Air Smoke DetectorHLAI - Filter Differential PressureMAO - Return Air DamperN.O.AI - Heat Air TempTBI - FreezestatTTAI - Return Air TempAI - Return AirflowAI - Supply AirflowHWSHWRHWAHU A. Run Conditions - Requested: The unit shall run whenever:•The zone is occupied.B. Emergency Shutdown: The unit shall shut down and generate an alarm upon receiving an emergency shutdown signal.C. Freeze Protection: The unit shall shut down and generate an alarm upon receiving a freezestat status.D. High Static Shutdown: The unit shall shut down and generate an alarm upon receiving a high static shutdown signal.E. Return Air Smoke Detection: The unit shall shut down and generate an alarm upon receiving a return air smoke detector status.F. Supply Air Smoke Detection: The unit shall shut down and generate an alarm upon receiving a supply air smoke detector status.G. AHU Optimal Start: The unit shall start prior to scheduled occupancy based on the time necessary for the zone to reach it'soccupied setpoints. The start time shall automatically adjust based on changes in outside air temperature and zone temperatures.H. Supply Fan: The supply fan shall run anytime the unit is commanded to run, unless shutdown on safeties. To prevent shortcycling, the supply fan shall have a user definable (adj.) minimum runtime. 1. Alarms shall be provided as follows:•Supply Fan Failure: Commanded on, but the status is off.•Supply Fan in Hand: Commanded off, but the status is on.I. Hot Water Coil Valve: The controller shall measure the mixed air temperature and modulate the heating coil valve tomaintain its setpoint 5°F (adj.) less than the supply air temperature setpoint. 1. The heating shall be enabled whenever:•Outside air temperature is less than 60°F (adj.).•AND the economizer is disabled.•AND the supply fan status is on. 2. The heating coil valve shall open for freeze protection whenever:•Mixed air temperature drops from 40°F to 35°F (adj.).•OR the freezestat is on.K. Supply Air Temperature Setpoint - Optimized: The controller shall monitor the supply air temperature and shall maintain asupply air temperature setpoint reset based on zone cooling and heating requirements. 1. The supply air temperature setpoint shall be reset for cooling based on zone cooling requirements as follows:•The initial supply air temperature setpoint shall be 55°F (adj.).•As cooling demand increases, the setpoint shall incrementally reset down to a minimum of 53°F (adj.).•As cooling demand decreases, the setpoint shall incrementally reset up to a maximum of 72°F (adj.) .L. Cooling Coil Valve: The controller shall measure the supply air temperature and modulate the cooling coil valve to maintain its cooling setpoint. 1. The cooling shall be enabled whenever:•Outside air temperature is greater than 60°F (adj.).•AND the economizer (if present) is disabled or fully open.•AND the supply fan status is on.•AND the heating is not active. 2. The cooling coil valve shall open to 100% (adj.) whenever the freezestat is on.M. Alarms shall be provided as follows:•High Supply Air Temp: If the supply air temperature is 5°F (adj.) greater than setpoint.•Low Supply Air Temperature Alarm: The controller shall alarm if the supply air temperature is less than 45°F (adj.).N. Economizer Mode:The system shall be equipped with differential dry bulb integrated economizer control.When return air continues to rise above the cooling setpoint, the return air temperature is above the outdoor air temperature, and theoutdoor dew point temperature is below 60 deg. F, integrated economizer shall be initiated. Outside and relief air dampers shall open and the returns air damper shall be closed. The relief air fan (F-1), shall increase speed based on outdoor airflow measuring stationsignal The minimum outside air damper shall open. Chilled water control valve shall modulate as required to maintain the discharge air temperature setpoint.Low Limit Shutoff:Integrated economizer control shall be disabled, and modulated economizer mode shall be initiated when outside air temperaturefalls below 55 deg. F.High Limit Shutoff:Integrated economizer control shall be disabled when the outdoor air temperature exceeds the return air temperature. The outsideair and relief dampers shall index to minimum, the return air damper shall index to maximum position and cooling mode shall be initiated.O. Minimum Outside Air Ventilation - Carbon Dioxide (CO2) Control: 1. When in the occupied mode, the controller shall monitor zone CO2 levels served by this air handling unit. The controllershall take the highest zone CO2 level and modulate the outside air dampers open on rising CO2 concentrations,overriding normal damper operation to maintain a CO2 setpoint of 750 ppm (adj.). 2. Alarms shall be provided as follows:•High Zone Carbon Dioxide Concentration: If the highest zone CO2 concentration is greater than 1000 ppm (adj.).P. Prefilter Differential Pressure Monitor: The controller shall monitor the differential pressure across the prefilter. 1. Alarms shall be provided as follows:•Prefilter Change Required: Prefilter differential pressure exceeds a user definable limit (adj.).Q. Mixed Air Temperature: The controller shall monitor the mixed air temperature and use as required for economizer control orheating control. 1. Alarms shall be provided as follows:•High Mixed Air Temp: If the mixed air temperature is greater than 90°F (adj.).•Low Mixed Air Temp: If the mixed air temperature is less than 45°F (adj.).R. Return Air Carbon Dioxide (CO2) Concentration Monitoring: The controller shall measure the return air CO2 levels. 1. Alarms shall be provided as follows:•High Return Air Carbon Dioxide Concentration: If the return air CO2 concentration is greater than 1000ppm (adj.) when inthe unit is running.OARAAI - Supply Air TempSoaAI - OA Airflow Measuring Station 3. Outside Air Flow Measuring Station:•The air flow station shall monitor the amount of ventilation air and track it against the CO2 levels in the space.TAI - Mixed Air TempTAI - Chilled Water Return TempTAI - Chilled Water Supply TempTTAI - Hot Water Return TempAI - Hot Water Supply TempTMCTVFDBO - Supply Fan Start/StopBI - Supply Fan StatusAO - Supply Fan VFD SpeedBI - Supply Fan VFD FaultSFMAO - Cooling ValveMAO - Heating ValveS. Return Air Temperature: The controller shall monitor the return air temperature and use as required for setpoint control oreconomizer control. 1. Alarms shall be provided as follows:•High Return Air Temp: If the return air temperature is greater than 90°F (adj.).•Low Return Air Temp: If the return air temperature is less than 45°F (adj.).T. Supply Air Temperature: The controller shall monitor the supply air temperature. 1. Alarms shall be provided as follows:•High Supply Air Temp: If the supply air temperature is greater than 120°F (adj.).•Low Supply Air Temp: If the supply air temperature is less than 55°F (adj.).MN.C.AO - Outside Air Damper 2 Position at LouverH LAI - Duct Pressure SensorThe fan VFD shall modulate speed based on duct mounted pressure sensor. The system shall utilize variable air volume terminalsto maintain temperatures in the respective zones. DELETED Outside Air DampersTSASASAVAVVAVSpace TempsTSpace TempsTSpace TempDamperDamperSAVAVsTSpace TempDamper22EXCELSIROPETROSPAPATHOMOPO U L O S 089554L I C E N S E DPROFESSIONALENGINEERSTATEOFNEWYORK Sheet Number45 LEWIS STREET BINGHAMTON, NY 13901607.217.7013www.L2studioarch.comOwner:Project Address:Professional Seal:RevisionsNOTICE: It is a violation of the law for any person, unless acting under the direction of a licensed architect, to alter this Drawing in any way. If alterations are made to this Drawing, when bearing the seal of an architect, the altering party shall affix their own professional seal to his/her revisions, and add the notation "altered by" followed by his/her signature and the date of such alteration, and a specific written description of the alteration(s) made.FINAL BID SETSheet TitleConsultant:49 COURT STREETP.O. BOX 1980BINGHAMTON, NY 13902TEL: 607-723-9421MJINC.COMCarpenter Hall B05 Systems Engineering Lab CodeComplianceCornell University313 Campus RdIthaca, NY 14850Date: 05.01.2019HVAC CONTROLSM5.01Project Number: 18.007No. Description Date2 Rev -2 VAV Terminals 05.14.2019