Addendum Two .pdf

COMMONWEALTH OF KENTUCKY

DEPARTMENT FOR FACILITIES AND SUPPORT SERVICES

DIVISION OF ENGINEERING AND CONTRACT ADMINISTRATION

INVITATION TO BID NO: RFB-167-24

FOR: Academic Building Renovation Hopkinsville Community College Kentucky Community & Technical College System Hopkinsville, Kentucky

DATE: February 23, 2024

RFB-785-2400000374

ADDENDUM NO. Two (2)

BIDDER SHALL CONFORM TO THE FOLLOWING CHANGES AS SAME SHALL BECOME BINDING

UPON THE CONTRACT TO BE ISSUED IN RESPONSE TO THIS INVITATION TO BID.

Item 1: Refer to addendum to be distributed by Lynn Imaging for all additions, deletions, and/or changes to specifications and/or drawings.

END OF ADDENDUM

Invitation to Bid No. RFB-167-24 For: Academic Building Renovation Hopkinsville Community College Kentucky Community & Technical College System Hopkinsville, Kentucky

Susan Ward, Statewide Procurement Analyst II Division of Engineering and Contract Administration

KCTCS Hopkinsville Community College Academic Building Renovation Hopkinsville, KY

RFB 167-24

Engineering File No. 470-CADL-HK66-00 C/S Project No. 2210

Addendum No. 2 February 22, 2024 The following Addendum Items shall be made part of the Contract Documents for this Project.

ARCHITECTURAL:

1. Add sheet note to D100, D101 and D102 – “contractor shall submit to the owner for first right of refusal all existing door lock cores and electronic lock keypads.”

2. Section 09 66 23 Resinous Matrix Terrazzo Flooring: Paragraph 2.4, A.1, change material to Brass.

3. Sheet A201, General Notes – New Work – Add the following new note 20 to read as follows:

“20. New terrazzo flooring shall be single color. Terrazzo aggregate shall be 70% marble chips and 30% mother-of-pearl, all #1 and #2.”

4. Section 08 43 13 Aluminum Framed Storefronts: Paragraph 2.3, subsection B, subsection C and subsection D, item 1 change exterior framing construction from nonthermal to thermal.

5. Change Frame Type “E” on A203 from 4-1/2” storefront system to 6” storefront system.

6. Modify Fenestration Type note 3 on A203. Remove “1/4” Spandrel Glass” and add the following: “Refer to 088000 for SG1 system design information.” Also make note of the full size mockup requirement noted under item 2 of the Fenestration Notes on A203.

7. Modify sheet note 7 on D101 to include “Removal of conduits to be confined to the area(s) of floor that have been saw cut and demolished for removal of floor boxes. It will not be required of the contractor to fully remove the conduit back to source.”

MECHANICAL AND ELECTRICAL:

1. Refer to Section 230900. The Contractor shall furnish and install water flow meter for domestic water. Water meter shall be installed downstream of the back-flow preventor, prior to any branches. Meter shall be Kele Model 220SS or equal. The meter shall be stainless steel construction, installed in a thread-o-let on the pipe main. Adjust depth as required to obtain accurate flow readings. Sensor shall be capable of flow range from 0.5 to 30.0 feet per second.

2. Refer to Section 230900. The Contractor shall furnish and install electric power meter for incoming electrical power. Power meter shall be Senva Inc Model EMX Advanced or equal.

Meter shall have required mounting hardware for installation in existing switchgear, and suitable for three phase power up to 600 Volts.

3. Refer to Section 230900. The Contractor shall furnish and install electric power meter for incoming electrical power. Power meter shall be Senva Inc Model EMX Advanced or equal.

Meter shall have required mounting hardware for installation in existing switchgear, and suitable for three phase power up to 600 Volts.

4. Refer to Section 230993 and Drawing H001 – Exhaust Fan Minimum Control Point Lists. The Temperature Controls System will not control the Exhaust Fans tagged EF-1A, EF-1B, and EF- 1C. The fans shall be controlled by switches mounted on the fume hoods they serve. The Controls system shall only monitor when fans are operating or indicate when that are off.

Alarms for these fans are not required.

5. Refer to Section 230993 and Drawing H001 – Exhaust Fan Minimum Control Point Lists. The Temperature Controls System will not control the Exhaust Fans tagged EF-1A, EF-1B, and EF- 1C. The fans shall be controlled by switches mounted on the fume hoods they serve. The Controls system shall only monitor when fans are operating or indicate when that are off.

Alarms for these fans are not required.

6. Refer to Specifications 283111 Digital Addressable Fire Alarm, System, paragraph 1.6 shall be revised as follows:

MANUFACTURERS

a. Subject to compliance with requirements, provide products as manufactured by Fire

Control Instruments, Inc.; a Honeywell company, basis-of-design or equal systems by:

1. FCI

2. ESI.

3. Fire-lite

4. Farenhyt

5. Siemens

6. Prior approved equal

7. Refer to Drawing U101. Add natural gas meter and associated piping as indicated on the attached Sketch XU01.

8. Refer to Drawings H001, H104, and ME201. Exhaust ductwork from Fume Hoods to Exhaust Fans shall be Type 304 Stainless Steel with fully welded joints. Contractor shall have the option to use clamp together stainless steel ductwork with gasketed joints. Clamp together duct shall be 12” diameter and shall be Nordfab Quick Fit or approved equal.

9. Refer to Drawing H105. Revise hydronic pipe routing at Mechanical/Storage 706 as indicated on attached Sketch XH01

10. Refer to Drawing H106. Install full sized by-pass with modulating control valve at the end of piping branch. Refer to variable speed pumping details for requirements.

11. Refer to Drawing H401. Add the Vertical Heat Pump Installation Detail on the attached Sketch XH04 to the drawing.

12. Refer to Drawing H402 – Mechanical Room Flow Schematic. Update schematic with the schematic on attached Sketches XH02 and XH03.

13. Refer to Drawing H501 – Dedicated Ventilation-Air Water Source Heat Pump with Total Energy Recovery Wheel Schedule and Section 237438. Update the Manufacturers List to include “United Cool Air”. Final approval will be reserved for the Shop Drawing review stage.

14. Refer to Drawing E102 and A501 – Refer to Architectural Detail B/A703 on A501 for ceiling panels and furring over existing concrete deck. Coordinate pendant mounted light fixture conduit routing with these elevations and details.

15. Refer to Drawing E104 – Provide Wiremold #5400 raceway on existing walls where there are adjacent receptacles and communication devices. Examples are computer lab devices, at teachers presentation station, and TV monitors.

16. Refer to Drawing E301 and 230993 Sequence of Operations – Electrical Contractor shall receive power monitoring device from Temperature Controls contractor and install on main switchgear.

CONTRACTOR QUESTIONS:

1. Clarification regarding Spec 084313 Q: Please verify if all framing should be non-thermal as indicated in spec section 084313 or they should all be thermal framing A: Refer to Addendum No. 2, Architectural Item 4. The modification to section 084313 changing the 4-1/8”, 4-1/2” and 6” storefront from nonthermal to thermal should address this question.

2. Fenestration Type E Q: Please note that due to the 21’-0” height of frame type “E” that it will need to be curtain wall in lieu of 4 ½” curtain wall.

A: Refer to detail C/A703 which denotes that the storefront system above 11’-5”+/- AFF is not exposed to outside elements and allows for multiple points of attachment. Only the interior face for the storefront system above 11’-5” +/- AFF is visible. In lieu of curtain wall the storefront system will go from 4-1/2” system to 6” system per Addendum No. 2, Architectural Item 5.

3. SG1 Clarification Q: Please verify makeup of glass type SG1. Drawings call for it to be ¼” spandrel glass.

Spec section 088000 calls it to be 1” Insulated Acid etched glass with spandrel on 4th surface.

A: Refer to 088000 for glass makeup and Addendum No. 2, Architectural Item 6 for clarification.

4. Electrical Floor Boxes

Q: Demo note 7 on sheet D101 is in reference to the electrical floor boxes. Is the intent to remove the boxes, wiring and circuits and abandon the conduits in the floor slab, or does the floor slab need to be cut up to remove the conduits as well?

A: See Addendum No. 2, Architectural Item 7 for clarification.

5. Terrazzo Floor

Q: The 1/8” terrazzo divider strips are specified as Zinc and the ½” terrazzo divider strips are specified as Brass. Is this correct? Is the entire floor one color, or are there multiple colors of terrazzo? If there are multiple colors, we need to know how many colors. We need some kind of guidance on the type of aggregate to be used, as prices vary dramatically.

A: Refer to Addendum No. 2, Architectural Items 2 and 3. The modification to section 096623 and addition of sheet note “20” address these concerns.

6. Electrical Inspection for Contract Compliance Q: Please clarify the Specification 26 00 00 -1.19 ELECTRICAL INSPECTION FOR CONTRACT COMPLIANCE “The contractor shall be responsible for obtaining and coordination of required electrical inspections any fees and charges associated with the inspections will be paid for by the owner. Inspections shall be made by a State Electrical Inspector Certified by the authority having jurisdiction. The contractor shall furnish the Engineer and Owner a copy of the Electrical Certificate of approval before final payment will be made.

A: Refer to General Conditions, section 10 Survey, Permits, Fees, Notices and Tests subsection 10.4.1. This will override Specification Section 260000 Subsection 1.19 regarding this matter only.

Attachment:

XH101 XH02 XH03 HX04.PDF

XU101.PDF

END OF ADDENDUM

HPB

OAU

1A B

1B B

1 1/4" R 1 1/4" S

2" S 2" R

6" S6" S6" R 6" R

1B P

1A P

FIL

1" D

1" D

6" R

6" S

2" D 1"

2" R 2 1/2" R

2 1/2" S

2" D

MECH/STORAGE

WORKROOM

OFFICE

COPYRIGHT ©, 2024 - MARCUM ENGINEERING, LLC

500 SOUTH 17th STREET

PADUCAH, KENTUCKY

42002-0120

PHONE - 270.444.9274 FAX - 270.443.1904

PROJECT NO.

DATE:

DRAWN BY:

SCALE:

REFERENCE DRAWING

SKETCH NO.

NTS

XH01

HVAC BASEMENT PIPING REVISION

TRN HOPKINSVILLE COMMUNITY COLLEGE

ACADEMIC BUILDING RENOVATION

22597

02/20/24

H105

SCALE:

PROJECT

NORTH

1/8" = 1'-0"

FLOOR PLAN

MECHANICAL TAG NOTES

19. CONNECT 4" SUPPLY AND RETURN MAINS FOR BOILER CONNNECTION TO 6" CONDENSER WATER MAIN.

20. INSTALL CONDENSATE FROM BOILER AND NEUTRALIZATION KIT AND ROUTE TO FLOOR DRAIN.

Description Date

V-1A

PUMP

P-1A

VAR.

FREQ.

DRIVE

TEMP.

CONTROL

FRONT END,

SEE NOTE #5

TWO (2) HYDRONIC

ZONES (SEE NOTE #2)

SEE NOTE #3

(TYP. EACH

PUMP)

12" MAX.AAV

1A B

1B B

(100% Flow) 1B P

(100% FLOW)

1A P

FIL

6" S

4" HWS/R

T T

SEE BOILER

PIPING DETAIL

6" CONCRETE HOUSEKEEPING PAD

SEE GENERAL HVAC NOTES. (TYP.)

4" HWR/S

6" S

4" HWR HEADER

4" HWS HEADER

6" R6" R

6" S

6" R

TO/FROM OAU-1

3" R/S

6" R/S PIPING

TO/FROM

FLUID COOLER

(FC-1)

6" R

6" R

6" R

M

SEE FILL LINE PIPING DIAGRAMCONNECT TO BACKFLOW

PREVENTER PROVIDED BY PLUMBER

(SEE PLUMBING DRAWINGS)

IN-LINE QUANTITATIVE WATER METER

CHECK VALVE

AIR/DIRT

SEPARATOR

6" R/S

FIRST FLOOR

ISOLATION BALL

VALVE (TYP.)

2" R/S

3-WAY CONTROL VALVE IN

SUPPLY FROM FLUID

COOLER. WILL ALLOW

90% BYPASS WHEN

BOIERS ARE OPERATING

AND 0% BYPASS WHEN

FLUID COOLER IS

OPERATING

M

EC

H /E

LE

C

R O

O M

W

AL

L

ISOLATION BUTTERFLY

VALVE (TYP.)

T P

TEMP. SENSOR (TYP.)

PRESS. GA. (TYP.)

PRESS. SENSOR (TYP.)

P&T TEST

PLUG (TYP.)

THERMOMETER

(TYP.)

T PT

SINGLE POINT ELECTRICAL

CONNECTION (SEE ELECT.)

SINGLE POINT ELECTRICAL

CONNECTION (SEE ELECT.)

PUMP

P-1B

VAR.

FREQ.

DRIVE

2-1/2" R/S TO HEAT

PUMPS, SEE PLAN

1A

BP

1B

BP

T

AMTROL MODEL AX-100V VERTICAL DIAPHRAGM

TYPE PRESSURIZED ASME EXPANSION TANK

WITH 55.7 GALLON TANK VOLUME & 22.6 GALLON

ACCEPTANCE VOLUME. INITIAL CHARGE 12 PSI.

MOUNT ON CONCRETE HOUSEKEEPING PAD

(SEE GENERAL HVAC NOTES).

COPYRIGHT ©, 2024 - MARCUM ENGINEERING, LLC

500 SOUTH 17th STREET

PADUCAH, KENTUCKY

42002-0120

PHONE - 270.444.9274 FAX - 270.443.1904

PROJECT NO.

DATE:

DRAWN BY:

SCALE:

REFERENCE DRAWING

SKETCH NO.

NTS

XH02

MECHANICAL ROOM FLOW SCHEMATIC REVISION - A

TRN HOPKINSVILLE COMMUNITY COLLEGE

ACADEMIC BUILDING RENOVATION

22597

02/20/24

H

Description Date H402

SEE NOTE #1 BY-PASS INSTALLED

AT EACH END OF

SUPPLY MAIN (SEE

DRAWINGS FOR SIZE)

MODULATING VALVE

ON/OFF

TYPICAL

WATER

SOURCE

EQUIP.

ELECTRIC ACTUATED

VALVE (SEE NOTE #4)

DP

TO/FROM

BUILDING

SYSTEM

VARIABLE SPEED PUMPING NOTES:

1. PROVIDE DIFFERENTIAL PRESSURE TRANSMITTER WITH VALVED (BALL VALVES) SENSING

LINES AS INDICATED. TRANSMITTER SHALL BE FURNISHED BY THE TEMPERATURE CONTROLS

CONTRACTOR AND INSTALLED BY THE MECHANICAL CONTRACTOR.

INSTALL P/T PORTS ON EITHER SIDE OF TRANSMITTER

2. TEMPERATURE CONTROLS CONTRACTOR SHALL FURNISH AND INSTALL CABLING BETWEEN

EACH HYDRONIC ZONE DP TRANSMITTER AND CONTROL PANEL. CABLE MUST BE AT MINIMUM

22 GAUGE, SHIELDED PAIR WIRE.

3. CONTRACTOR SHALL INSTALL ELECTRICAL POWER LEADS BETWEEN EACH VARIABLE

FREQUENCY DRIVE AND EACH PUMP.

4. TWO-POSITION (OPEN/CLOSED) ELECTRICAL ACTUATED VALVE SHALL BE FURNISHED BY THE

TEMPERATURE CONTROLS CONTRACTOR AND INSTALLED BY THE MECHANICAL CONTRACTOR.

5. REFER TO SEQUENCE OF OPERATIONS FOR HVAC CONTROLS FOR SYSTEM REQUIREMENTS

AND INPUTS/OUTPUTS FOR EACH COMPONENT.

COPYRIGHT ©, 2024 - MARCUM ENGINEERING, LLC

500 SOUTH 17th STREET

PADUCAH, KENTUCKY

42002-0120

PHONE - 270.444.9274 FAX - 270.443.1904

PROJECT NO.

DATE:

DRAWN BY:

SCALE:

REFERENCE DRAWING

SKETCH NO.

NTS

XH03

MECHANICAL ROOM FLOW SCHEMATIC REVISION - B

TRN HOPKINSVILLE COMMUNITY COLLEGE

ACADEMIC BUILDING RENOVATION

22597

02/20/24

Description Date H402

VERTICAL HEAT PUMP INSTALLATION DETAIL

NO SCALE

R

S

R S

EXHAUST AIR DUCT

OUTSIDE AIR DUCT

SUPPLY AIR DUCT SEE

PLANS FOR LOCATION

WATER LOOP SUPPLY

AND RETURN MAINS

BALL VALVE

(TYP.)

CONDENSATE DRAIN LINE

AND TRAP (SEE PLAN FOR

SIZE & LOCATION)

MAINTAIN REQUIRED

ACCESS PANEL

CLEARANCES (TYP.)

MAINTAIN CLEARANCE FOR

FILTER REMOVAL

INSTALL OVERSIZED

FILTER HOUSING

INSTALL UNIT ON

CONCRETE PAD

INSTALL UNIT IN

DRAIN PAN

FULL-SIZED PLENUM BOX TO

BE PLANS FOR LOCATION

INSTALLED AT WSHP.

SEE HVAC

VOLUME DAMPER

(TYP.)

4'-0" MIN. DISTANCE

COPYRIGHT ©, 2024 - MARCUM ENGINEERING, LLC

500 SOUTH 17th STREET

PADUCAH, KENTUCKY

42002-0120

PHONE - 270.444.9274 FAX - 270.443.1904

PROJECT NO.

DATE:

DRAWN BY:

SCALE:

REFERENCE DRAWING

SKETCH NO.

NTS

XH04

VERTICAL WATER SOURCE HEAT PUMP DETAIL

TRN HOPKINSVILLE COMMUNITY COLLEGE

ACADEMIC BUILDING RENOVATION

22597

02/20/24

H402Description Date

XU101