ADDENDUM Chevron-1. Addendum Chevron-1 to Houston Community College Alief Center Renovation

Transcription

1 October 22, 202 hevron nergy Solutions ompany ivision of hevron U.S.. Inc oster, Suite 400 Overland Park, KS Tel: ax: RO: hevron nergy Solutions ompany NU hevron- TO: R: Prospective idders ddendum hevron- to Houston ommunity ollege lief enter Renovation You are instructed to read and to note the following described changes, corrections, clarifications, approvals, additions, and/or deletions. Receipt of ddendum hevron- is to be acknowledged on the bid form by the idder. HNGS/LRIITIONS ) Owner shall have first right of refusal for all equipment removed from the facility. idder shall be responsible for removal and proper disposal of refrigerant. If existing chillers must be disassembled to allow them to be removed from the facility, reassembly is not required. 2) There will be lay down area available for the ontractors. It will be located north of the lief enter parking lot; map is attached at the end of this document. General ontractor shall provide security fence around area shown. idder shall be responsible for secure containers as required. 3) xisting air-handling units to be replaced that are currently serving occupied areas on the st floor include: HU--, HU-3-, HU-P- and HU-P-2. 4) New variable frequency drives shall be provided by idder and installed by General ontractor. 5) ontrol valves and control dampers (not provided with HU) shall be provided by ontrols ontractor and installed by idder. 6) hiller automatic isolation valves shall be replaced. New valves provided by ontrols ontractor and installed by idder; existing actuators shall be reused. 7) Remove existing balancing valves on existing air-handling units to remain that shall receive new pressure independent control valves, provide and install spool piece as required. 8) Refrigerant monitor shall be provided and installed by idder. ontrols ontractor shall interface with refrigerant monitor and interlock with purge system. ontrols ontractor shall also provide and install strobe lights and pull stations/emergency push buttons. Power wiring by General ontractor. WS-3248 Page of 3

2 9) ume hoods and fume hood controls shall be provided and installed by idder. ontrols ontractor shall interface to fume hood controller via net. Point mapping shall be provided by idder. 0) ooling tower motors to be provided and installed by idder. lectrical by General ontractor. ) rawings show existing VV boxes to be locked closed on the 3 rd and 4 th floor; this work shall be completed by ontrols ontractor. 2) Roof curbs and penetrations associated with mechanical installation shall be provided and installed by idder. ontact H Roofing onsultant, ike Perry , regarding roofing requirements including warranty. 3) ire protection shall be provided and installed by General ontractor. This shall include any existing fire protection systems that must be removed and replaced or relocated to remove and install equipment. 4) ire dampers shall be provided and installed by idder. 5) Smoke detectors shall be provided and installed by General ontractor. 6) idder shall determine means necessary to remove and install equipment. Should existing doors, walls, louvers, etc. need to be removed and replaced, idder shall include this work in his/her price. idder shall also include roof protection to prevent damage while working on the roof. 7) The chilled water tie-ins for the new U s serving the north stairwell are not shown on the drawings. New chilled water supply and return piping shall be routed to existing 2 lines from shaft near room uilding Ops oordinate exact location with hevron onstruction anager and ngineer. 8) sbestos abatement shall be by General ontractor. WS-3248 Page 2 of 3

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4 October 29, 202 hevron nergy Solutions ompany ivision of hevron U.S.. Inc oster, Suite 400 Overland Park, KS Tel: ax: RO: hevron nergy Solutions ompany NU hevron-2 TO: R: Prospective idders ddendum hevron-2 to Houston ommunity ollege lief enter Renovation You are instructed to read and to note the following described changes, corrections, clarifications, approvals, additions, and/or deletions. Receipt of ddendum hevron-2 is to be acknowledged on the bid form by the idder. HNGS/LRIITIONS ) Remove Paragraph from Specification Section Refer to revised fume hood supply and exhaust valve schedules. 2) Specification Section is attached and shall be included in id ocuments. 3) ive (5) existing Liebert units located on the 2 nd floor across from the freight elevator shall be removed by idder. Remove piping back to valves and provide blind flanges shall be removed by General ontractor. 4) ir-handling units that must be broken down and reassembled in the field shall be reassembled per manufacturer s written instructions. ll joints shall be caulked and properly sealed. pply ¼ thick by -/4 wide closed cell neoprene gasketing to all joints. Use commercial grade silicone (indoor use) to seal seams. 5) The following changes shall be included in Section , Part GNRL, rticle.6 VRIITION O HILLR PITY N IINY, Paragraph TORY PRORN TST; Remove subparagraph 4 and subparagraph 5 and replace with the following: The equipment will be accepted if the test procedures and results are in conformance with HRI Standard 550/590. If the equipment fails to perform within allowable tolerances, the manufacturer will be allowed to make necessary revisions to his equipment and retest as required. The manufacturer shall assume all expenses incurred by the owner or his representative to witness the request. WS-3248 Page of 2

5 Subparagraph 6 Line a, Revise line "a" to read: or each ton below the allowable capacity as set forth in HRI 550/590 of the design capacity, $,000 (one thousand dollars) per ton will be deducted from the contract price. Subparagraph 6 Line b, Revise line "b" to read: llowable capacity = [( - tolerance) x design capacity]; tolerance per HRI 550/590. Subparagraph 6 Line c, dd the following to end of line "c": tolerance per HRI 550/590. Section , Part GNRL, rticle.6 VRIITION O HILLR PITY N IINY, Paragraph ; Paragraph.: dd the following to end of paragraph : onduct the performance test in accordance with HRI Standard 550/590 procedures and tolerances. Section , Part GNRL, rticle.9 WRRNTY, Paragraph ; change materials to materials, labor and refrigerant. 6) Section , Part 2 PROUTS, elete rticle 2.2 IRLOW SURNT. 7) H-2 and H-4 have mechanical issues and are not currently operable. One () chiller is required to be running to condition the building. 8) idder shall tie-in chilled water lines for the new U s serving the north stairwell per ddendum hevron-. This piping originally served two (2) ceiling hung units and has been abandoned. idder shall remove abandoned piping. 9) ivision- General Requirements are attached and shall be included in id ocuments. Specifications available at: d872-4f75-9c86-cd33e9cd2e4}. ll correspondence from idder shall be through hevron nergy Solutions. 0) idder shall include a project schedule with his/her bid. ) - shall be equipped with 2-speed motor. 2) LP- and LP-2 shall be rotated 90 degrees, coordinate exact location/orientation with hevron nergy Solutions Project anager and ngineer. 3) Provide alternate educt for arrier hillers as substitution for Trane hillers. 4) The following sheets have been revised and are attached:.04,.02,.03,.04,.07,.40,.406,.408 and.60. WS-3248 Page 2 of 2

6 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN JO RV. O HNIL.dwg H-UT-LI RWN Y RH/H HK Y H JO NO. SL /8" = '-0" T ISSU ISSU OR I SHT ONTNTS 2nd LOOR HNIL OLITION - PRT 3 RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

7 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN JO RV. HNIL-R.dwg H-UT-LI RWN Y RH/H HK Y H JO NO. SL /8" = '-0" T ISSU ISSU OR I SHT ONTNTS 2nd LOOR HNIL PLN - PRT RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

8 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN JO RV. HNIL-R.dwg H-UT-LI RWN Y RH/H HK Y H JO NO. SL /8" = '-0" T ISSU ISSU OR I SHT ONTNTS 2nd LOOR HNIL PLN - PRT 2 RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

9 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN JO RV. HNIL-R.dwg H-UT-LI RWN Y RH/H HK Y H JO NO. SL /8" = '-0" T ISSU ISSU OR I SHT ONTNTS 2nd LOOR HNIL PLN - PRT 3 RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

10 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN HNIL-R.dwg JO RV. RWN Y RH/H HK Y H JO NO. SL /6" = '-0" T ISSU ISSU OR I SHT ONTNTS ROO HNIL PLN RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

11 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN HNIL O.dwg JO RV. RWN Y W HK Y JW JO NO. SL /4" = '-0" T ISSU ISSU OR I SHT ONTNTS NLRG PLNS RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

12 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN HNIL NW.dwg JO RV. RWN Y W HK Y JW JO NO. SL /4" = '-0" T ISSU ISSU OR I SHT ONTNTS NLRG PLNS RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

13 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN HNIL NW.dwg JO RV. RWN Y W HK Y JW JO NO. SL /4" = '-0" T ISSU ISSU OR I SHT ONTNTS NLRG PLNS RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

14 5850 SN LIP ST. SUIT NU NO. HVRON 2 2 ISSU OR I ISSU OR PRIT LT# T SRIPTION PROSSIONL SLS ILN JO RV. HNIL-R.dwg H-UT-LI RWN Y RH/H HK Y H JO NO. SL /8" = '-0" T ISSU ISSU OR I SHT ONTNTS SHULS RWING NUR 5850 SN LIP, SUIT 40, HOUSTON TX office: RGISTRTION NO

15 October 3, 202 hevron nergy Solutions ompany ivision of hevron U.S.. Inc oster, Suite 400 Overland Park, KS Tel: ax: RO: hevron nergy Solutions ompany NU hevron-3 TO: R: Prospective idders ddendum hevron-3 to Houston ommunity ollege lief enter Renovation You are instructed to read and to note the following described changes, corrections, clarifications, approvals, additions, and/or deletions. Receipt of ddendum hevron-3 is to be acknowledged on the bid form by the idder. HNGS/LRIITIONS ) Section , Part GNRL, rticle.9 WRRNTY shall be replaced with:. See Section loseout Procedures, for additional warranty requirements.. Provide a one year warranty for parts, labor, and refrigeration from date of issuance of occupancy permit. Warranty to coincide with manufacturer s parts warranty.. Provide second through fifth year parts warranty on compressors. 2) ll supply ductwork to be externally wrapped. 3) T/T duct flange is acceptable for rectangular fume hood ductwork, mig welded joints are acceptable for round fume hood ductwork. 4) Painting specified on Sheet.406 shall be by idder. 5) New equipment pads required for mechanical work shall be provided and installed by idder. 6) idder shall provide list of any electrical support required for temporary setups. 7) Original structural drawing S is included for reference. 8) id ue ate shall be revised. ids will be received by :00 p.m. (local time) riday, November 2 nd, 202. WS-3248 Page of