CRES _ Addendum No 1_01_28_2026.pdf

Renovations to

COWAN ROAD ELEMENTARY SCHOOL

Griffin-Spalding County School System

PBK PN 250111

Addendum No. 1 - Page 1 of 2

PBK, P.O. BOX 880, GRIFFIN, GA 30223

ADDENDUM NO. 1: DATED: 2026/01/28

To: All Prime contract bidders of record.

This addendum forms a part of the Contract Documents and modifies the original Specifications and

Drawings dated 2026/01/06, as noted below. Acknowledge receipt of this Addendum in the space provided on the Bid Form; failure to do so may subject bidder to disqualification.

SPECIFICATIONS

The following attached specification sections dated 2026/01/28 shall replace the current specification sections of the same name and number.

1. SECTION 000115 – LIST OF DRAWING SHEETS

(New sheet added: M-401 CO MONITORING CONTROL DIAGRAM)

2. SECTION 004322 – UNIT PRICES FORM

(Clarification to 1.3.B)

(1.3.N. Unit Price No. 14 added)

3. SECTION 004323 – ALTERNATES FORM

(Paragraph 1.4.A, changed “3.13.M.7” to “3.13.K.7”)

(Paragraph 1.4.B, changed “3.13.M.8” to “3.13.K.8”)

(Paragraph 1.4.C, changed “3.13.M.9” to “3.13.K.9”)

(Paragraph 1.4.D, changed “3.13.M.10” to “3.13.K.10”)

4. SECTION 012100 – ALLOWANCES

(Clarification to Quantity Allowance A.1)

(Clarification to Quantity Allowance A.2)

(Quantity Allowance A.14 added)

5. SECTION 012200 – UNIT PRICES

(Clarification to Schedule of Unit Prices 3.1B)

(Added Unit Prices 3.1N)

6. SECTION 012300 - ALTERNATES

(Paragraph 3.1.A, changed “3.13.M.7” to “3.13.K.7”)

(Paragraph 3.1.B, changed “3.13.M.8” to “3.13.K.8”)

(Paragraph 3.1.C, changed “3.13.M.9” to “3.13.K.9”)

(Paragraph 3.1.D, changed “3.13.M.10” to “3.13.K.10”)

7. SECTION 230900 – INSTRUMENTATION AND CONTROL FOR HVAC

(Paragraph 2.1.A modified)

(Paragraph 2.3.L modified)

(Paragraph 3.13.K.11 modified)

Renovations to

COWAN ROAD ELEMENTARY SCHOOL

Griffin-Spalding County School System

PBK PN 250111

Addendum No. 1 - Page 2 of 2

DRAWINGS

The following attached sheets dated 2026/01/28 shall replace the current sheets of the same name and number. Revisions to the sheets are clouded #1 for reference.

G-001 – COVER SHEET

Sheet Index – Sheet M-401 – new sheet added

A-201 - OVERALL REFLECTED CEILING PLAN

Graphical clean up – no scope modifications

A-901A – SECTOR A FLOOR PATTERN PLAN

VCT to continue under drinking fountain

A-901D – SECTOR D FLOOR PATTERN PLAN

VCT to continue under drinking fountain

P-1.11 – PLUMBING OVERALL FLOOR PLAN

Change 3" gas pipe to 4" gas pipe in Note 21.

M-401 – CO MONITORING CONTROL DIAGRAM

New sheet – Sheet contains CO Monitoring diagram

M-601 – MECHANICAL SCHEDULES

Changes to GAS UNIT HEATERS SCHEDULE:

UH-1 – Motor HP changed to 1/15

UH-2 – Motor HP changed to 1/6

UH-3 – Motor HP changed to 1/6

UH-4 – Motor HP changed to 1/6

Changes to DOOR AIR CURTAIN SCHEDULE

DAC-1 - Changed CFM to 1442

Changes to CEILING HEATERS SCHEDULE

CH-1 – Q-Mark Model Number change to CDF-547RE

CH-2 – Q-Mark Model Number change to CDF-547RE

CH-3 – Q-Mark Model Number change to CDF-547RE

CH-4 – Q-Mark Model Number change to CDF-547RE

CH-5 – Q-Mark Model Number change to CDF-547RE

CH-6 – Q-Mark Model Number change to CDF-547RE

M-602 – MECHANICAL SCHEDULES

Changes to 100% OUTDOOR AIR UNITS (OAU-4)

GREENHECK MODEL NO. Changed to RV-10-7I-B-E2

HEATING MODE DESIGN CONDITIONS/SUPPLY AIR/D.B.F Changed to 70.7

HEATING INPUT MBH Changed to 75

HEATING OUTPUT MBH Changed to 60.8)

PBK Architects Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

PBK Project No. 250111 Griffin-Spalding County Board of Education

Bid Set - Addendum No1 2026/01/28

000115 - List of Drawing Sheets

SECTION 000115 - LIST OF DRAWING SHEETS

LIST OF DRAWINGS: DRAWINGS CONSIST OF THE FOLLOWING CONTRACT DOCUMENTS:

ARCHITECTURAL

G-001 COVER

G-002 GENERAL PROJECT INFORMATION

AS101 ARCHITECTURAL SITE PLAN

AS201 SITE DETAILS

AS202 SITE DETAILS

AD101 OVERALL DEMOLITION FLOOR PLAN

AD101A SECTOR A DEMOLITION FLOOR PLAN

AD101B SECTOR B DEMOLITION FLOOR PLAN

AD101C SECTOR C DEMOLITION FLOOR PLAN

AD101D SECTOR D DEMOLITION FLOOR PLAN

A-101 OVERALL FLOOR PLAN

A-101A SECTOR A FLOOR PLAN

A-101B SECTOR B FLOOR PLAN

A-101C SECTOR C FLOOR PLAN

A-101D SECTOR D FLOOR PLAN

A-201 OVERALL REFLECTED CEILING PLAN

A-301 OVERALL ROOF PLAN

A-311 ROOF DETAILS

A-312 ROOF DETAILS

A-701 INTERIOR ELEVATIONS AND DETAILS

A-900 PROJECT SCHEDULES & DETAILS

A-901 OVERALL FLOOR PATTERN PLAN

A901-A SECTOR A FLOOR PATTERN PLAN

A901-B SECTOR B FLOOR PATTERN PLAN

A901-C SECTOR C FLOOR PATTERN PLAN

A901-D SECTOR D FLOOR PATTERN PLAN

STRUCTURAL

S-001 GENERAL NOTES

S-100 OVERALL ROOF PLAN

S-200 COOLING TOWER SUPPORT PLANS & DETAILS

PLUMBING

P1.11 PLUMBING OVERALL FLOOR PLAN

P3.11 PLUMBING SCHEDULES, LEGEND AND DETAILS

MECHANICAL

MD101A MECHANICAL DUCT DEMOLITION FLOOR PLAN SECTOR A

MD101B MECHANICAL DUCT DEMOLITION FLOOR PLAN SECTOR B

MD101C MECHANICAL DUCT DEMOLITION FLOOR PLAN SECTOR C

MD101D DUCT DEMOLITION FLOOR PLAN SECTOR D

MD102A

MECHANICAL OUTDOOR AIR DUCT DEMOLITION FLOOR PLAN

SECTOR A

MD102B

MECHANICAL OUTDOOR AIR DUCT DEMOLITION FLOOR PLAN

SECTOR B

MD102C

MECHANICAL OUTDOOR AIR DUCT DEMOLITION FLOOR PLAN

SECTOR C

MD102D

MECHANICAL OUTDOOR AIR DUCT DEMOLITION FLOOR PLAN

SECTOR D

MD201A MECHANICAL PIPING DEMOLITION FLOOR PLAN SECTOR A

MD201B MECHANICAL PIPING DEMOLITION FLOOR PLAN SECTOR B

MD201C MECHANICAL PIPING DEMOLITION FLOOR PLAN SECTOR C

MD201D MECHANICAL PIPING DEMOLITION FLOOR PLAN SECTOR D

MD301 MECHANICAL ROOM LARGE SCALE DEMOLITION PLAN

M-101A MECHANICAL DUCT FLOOR PLAN SECTOR A

M-101B MECHANICAL DUCT FLOOR PLAN SECTOR B

M-101C MECHANICAL DUCT FLOOR PLAN SECTOR C

M-101D MECHANICAL DUCT FLOOR PLAN SECTOR D

M-102A MECHANICAL OUTDOOR AIR DUCT FLOOR PLAN SECTOR A

M-102B MECHANICAL OUTDOOR AIR DUCT FLOOR PLAN SECTOR B

M-102C MECHANICAL OUTDOOR AIR DUCT FLOOR PLAN SECTOR C

M-102D MECHANICAL OUTDOOR AIR DUCT FLOOR PLAN SECTOR D

M-201A MECHANICAL PIPING FLOOR PLAN SECTOR A

M-201B MECHANICAL PIPING FLOOR PLAN SECTOR B

M-201C MECHANICAL PIPING FLOOR PLAN SECTOR C

M-201D MECHANICAL PIPING FLOOR PLAN SECTOR D

M-301 MECHANICAL ROOM LARGE SCALE PLAN

M-302 MECHANICAL NEW WORK PIPING SCHEMATIC

M-401 CO MONITORING CONTROL DIAGRAM

M-501 MECHANICAL DETAILS

M-502 MECHANICAL DETAILS

M-503 MECHANICAL DETAILS

M-601 MECHANICAL SCHEDULES

M-602 MECHANICAL SCHEDULES

M-603 MECHANICAL LEGEND & GENERAL NOTES

ELECTRICAL

ED001 ELECTRICAL OVERALL DEMOLITION PLAN

E001 ELECTRICAL SITE PLAN

E101 ELECTRICAL LIGHTING FLOOR PLAN - SECTOR A

E102 ELECTRICAL LIGHTING FLOOR PLAN - SECTOR B

E103 ELECTRICAL LIGHTING FLOOR PLAN - SECTOR C

E104 ELECTRICAL LIGHTING FLOOR PLAN - SECTOR D

E201 ELECTRICAL POWER FLOOR PLAN - SECTOR A

E202 ELECTRICAL POWER FLOOR PLAN - SECTOR B

E203 ELECTRICAL POWER FLOOR PLAN - SECTOR C

E204 ELECTRICAL POWER FLOOR PLAN - SECTOR D

E301 ELECTRICAL LOW VOLTAGE FLOOR PLAN - SECTOR A

E302 ELECTRICAL LOW VOLTAGE FLOOR PLAN - SECTOR B

E303 ELECTRICAL LOW VOLTAGE FLOOR PLAN - SECTOR C

E304 ELECTRICAL LOW VOLTAGE FLOOR PLAN - SECTOR D

E701 ELECTRICAL DETAILS

E801 ELECTRICAL SCHEDULES

E802 ELECTRICAL SCHEDULES AND LEGEND

END OF SECTION 000115

THIS PAGE INTENTIONALLY LEFT BLANK.

004322 - Unit Prices Form

SECTION 004322 - UNIT PRICES FORM

1.1 BID INFORMATION

A. Bidder: ____________________________________________________________________.

B. Project Name: Renovations to COWAN ROAD ELEMENTARY SCHOOL

C. Project Location: 1233 Cowan Road, Griffin, Georgia30223

D. Owner: Griffin-Spalding County School System

E. Architect: PBK Architects Georgia, P.C.

F. Architect Project Number: 250111

1.2 BID FORM SUPPLEMENT

A. This form is required to be attached to the Bid Form.

B. The undersigned Bidder proposes the amounts below be added to or deducted from the Contract Sum on performance and measurement of the individual items of Work as required by Section 012200 “Unit Prices.”

1.3 UNIT PRICES

A. Unit Price No. 1: Fully remove 1 LF of existing interior caulking in CMU partitions and install 1 LF of new caulking. Existing joints shall be fully cleaned prior to installation of new caulk. This work may comprise of small quantities in multiple locations.

1. _______________________________________ Dollars ($_________________) per LF.

B. Unit Price No. 2: Remove 1 (2’x2’) existing type APC#1 acoustical panel ceiling tiles and install 1 (2’x2’) new type APC#1 acoustical panel ceiling tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain. This

1. _______________________________________ Dollars ($_________________) per tile.

C. Unit Price 3: Fully remove 1 LF of existing exterior sealant and install 1 LF of new sealant. Existing joints shall be fully cleaned prior to installation of new sealant. This work may comprise of small quantities in multiple locations.

1. _______________________________________ Dollars ($_________________) per L.F.

D. Unit Price 4: Fully remove 1 LF of existing exterior brick mortar joints and repoint 1 LF of new exterior brick mortar joints (match existing). Existing joints shall be fully cleaned prior to the installation of new mortar. This work may comprise of small quantities in multiple locations.

1. ________________________________________ Dollars ($________________) per LF.

E. Unit Price 5: Fully remove 1 LF of existing heat welded joints and install 1 LF of new heat welded joints in existing resilient athletic flooring at Gym. The existing joints shall be fully cleaned prior to installation of new heat welded joints. This work may comprise of small quantities in multiple locations.

F. Unit Price 6: Fully remove 1 SF of existing roof insulation and install 1 SF of new roof insulation to match existing. This work may comprise of small quantities in multiple locations.

1. ________________________________________ Dollars ($________________) per S.F.

G. Unit Price 7: Fully remove 1 SF of existing subgrade and gravel base and install 1 SF of new subgrade and gravel base. This work may comprise of small quantities in multiple locations.

H. Unit Price 8: Install 1 LF of additional VTR Piping to existing Vent Piping at roof.

I. Unit Price 9: Fully remove 1 SF of existing Pressure Treated 5/8" Plywood sheathing at roofs and install 1 SF of new Pressure Treated 5/8" Plywood sheathing at roofs. This work may

J. Unit Price 10: Fully remove 1 LF of existing Pressure Treated 2x4 wood blocking at roofs and install 1 LF of new Pressure Treated 2x4 wood blocking at roofs. This work may comprise of small quantities in multiple locations.

1. ________________________________________ Dollars ($________________) per L.F.

K. Unit Price 11: Fully remove 1 wall-mounted doorstop and install 1 new wall-mounted doorstop to match existing.

1. __________________________________ Dollars ($_________________) per doorstop.

L. Unit Price 12: Fully remove 1door silencer and install 1 new door silencer to match existing.

1. ___________________________________ Dollars ($_________________) per silencer.

M. Unit Price 13: Paint 1 SF of interior split-face CMU in lieu of 1 SF of sealer. Portions of this work may occur in various locations within the Commons area. The Architect will issue the exact locations if, after cleaning and inspection of the split-face CMU, painting is determined to be required.

N. Unit Price No. 14: Remove 1 (2’x2’) existing type APC#2 acoustical panel ceiling tiles and install 1 (2’x2’) new type APC#2 acoustical panel ceiling tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain.

This work may comprise of small quantities in multiple locations.

1. _______________________________________ Dollars ($_________________) per tile.

1.4 SUBMISSION OF BID SUPPLEMENT

A. Respectfully submitted this _____ day of __________________, 20_____.

B. Submitted By:________________________________________(Insert name of bidding firm or corporation).

C. Authorized Signature:_______________________________________(Handwritten signature).

D. Signed By:__________________________________________________(Type or print name).

E. Title:______________________________________(Owner/Partner/President/Vice President).

END OF SECTION 004322

004323 - Alternates Form

SECTION 004323 - ALTERNATES FORM

1.1 BID INFORMATION

A. Bidder: _____________________________________________________________________.

B. Project Name: Renovations to COWAN ROAD ELEMENTARY SCHOOL

C. Project Location: 1233 Cowan Road, Griffin, Georgia 30223

D. Owner: Griffin-Spalding County School System

E. Architect: PBK Architects Georgia, P.C.

F. Architect Project Number: 250111

1.2 BID FORM SUPPLEMENT

A. This form is required to be attached to the Bid Form.

1.3 DESCRIPTION

A. The undersigned Bidder proposes the amount below be added to or deducted from the Base Bid if particular alternates are accepted by Owner. Amounts listed for each alternate include costs of related coordination, modification, or adjustment in accordance with Section 012300 “Alternates.”

B. If the alternate does not affect the Contract Sum, the Bidder shall indicate "NO CHANGE."

C. The Bidder shall be responsible for determining from the Contract Documents the effects of each alternate on the Contract Time and the Contract Sum.

D. The Owner may use Deductive Alternates to reduce the Base Bid on the Project; however, the Alternates will be considered in numerical sequence and accepted in that order.

E. The Owner may use Additive Alternates to determine the low Bidder on the Project. Additive Alternates may be exercised in any order.

F. It is to be understood that if the same combination of Alternates accepted for all Bidders results in a different low Bidder than that received on the Base Bid, such new low Bidder will become the low Bidder of record for the purpose of further negotiation and/or for the award of the Contract.

G. Acceptance or non-acceptance of any alternates by the Owner shall have no effect on the Contract Time.

1.4 SCHEDULE OF ALTERNATES

A. Alternate No. 1:

Under this Additive Alternate, Contractor shall add:

(____________________________________________) dollars ($___________________) to the base bid to perform all Work associated with Emergency Generator Monitoring, per specification section 230900 – Instrumentation and Control for HVAC, paragraph 3.13.K.7. This Work shall not be included in the Base Bid.

B. Alternate No. 2:

(___________________________________________) dollars ($____________________) to the base bid to perform all Work associated with Electric Utility Monitoring Control, per

3.13.K.8. This Work shall not be included in the Base Bid.

C. Alternate No. 3:

(___________________________________________) dollars ($____________________) to the base bid to perform all Work associated with Gas Utility Monitoring Control, per

3.13.K.9. This Work shall not be included in the Base Bid.

D. Alternate No. 4:

(___________________________________________) dollars ($____________________) to the base bid to perform all Work associated with Water Utility Monitoring Control, per

3.13.K.10. This Work shall not be included in the Base Bid.

E. Alternate No. 5:

(___________________________________________) dollars ($____________________) to the base bid to provide Project Sign as indicated on the drawings. This Work shall not be included in the Base Bid.

F. Alternate No. 6:

(___________________________________________) dollars ($___________________) to the base bid to perform all Work associated with the replacement of (2) 7’-0” x 25’-0” Kalwall Skylights in Corridors as indicated on the drawings. This Work shall not be included in the Base Bid.

G. Alternate No. 7:

(___________________________________________) dollars ($___________________) to the base bid to perform all Work associated with powder coating the steel beams supporting the cooling tower as indicated on the drawings. This Work shall not be included in the Base Bid.

1.5 SUBMISSION OF BID SUPPLEMENT

A. Respectfully submitted this _____ day of _______________, 20_____.

B. Submitted By:___________________________________(Insert name of bidding firm or corporation).

C. Authorized Signature:____________________________________(Handwritten signature).

D. Signed By:______________________________________________(Type or print name).

E. Title:___________________________________(Owner/Partner/President/Vice President).

END OF SECTION 004323

012100 - Allowances

SECTION 012100 - ALLOWANCES

PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. The provisions of the General Conditions, Supplementary Conditions, Drawings, Specifications, and the Sections included under Division 1, General Requirements and References are included as a part of this Section as though bound herein.

1.2 SUMMARY

A. Section includes administrative and procedural requirements governing allowances.

1. Certain items are specified in the Contract Documents by allowances. Allowances have been established in lieu of additional requirements and to defer selection of actual materials and equipment to a later date when directions will be provided to Contractor. If necessary, additional requirements will be issued by Change Order.

B. Types of allowances include the following:

1. Quantity allowances.

2. Contingency allowances.

C. Related Requirements:

1. Section 004321 “Allowances Form” for form for allowances to be included with the Bid.

2. Section 012200 "Unit Prices" for procedures for using unit prices.

1.3 SELECTION AND PURCHASE

A. At the earliest practical date after award of the Contract, advise Architect of the date when final selection and purchase of each product or system described by an allowance must be completed to avoid delaying the Work.

B. At Architect's request, obtain proposals for each allowance for use in making final selections.

Include recommendations that are relevant to performing the Work.

1.4 ACTION SUBMITTALS

A. Submit proposals for purchase of products or systems included in allowances, in the form specified for Change Orders.

1.5 INFORMATIONAL SUBMITTALS

A. Submit invoices or delivery slips to show actual quantities of materials delivered to the site for use in fulfillment of each allowance.

B. Submit time sheets and other documentation to show labor time and cost for installation of allowance items that include installation as part of the allowance.

C. Coordinate and process submittals for allowance items in same manner as for other portions of the Work.

1.6 COORDINATION

A. Coordinate allowance items with other portions of the Work. Furnish templates as required to coordinate installation.

1.7 ALLOWANCES, GENERAL

A. Owner reserves the right to use unused portions of Allowances for other Work required by the Project.

1. The Owner or Architect shall direct the Contractor as to the use of any unused Allowances.

B. Allowances shown are generally for unforeseen conditions and are above and beyond any specific contract material and work requirements.

1.8 QUANTITY ALLOWANCES

A. Use quantity allowances as scheduled in this section in conjunction with unit prices as scheduled in Section 012200 “Unit Prices” to determine line item values associated with the quantity allowances schedule.

B. All costs associated with Quantity Allowances are above and beyond quantities required to construct project as indicated on the Drawings.

C. Line items for each quantity allowance scheduled shall be included on the “Schedule of Values” included with application for payments.

D. Contractors costs associated with these line item values shall include all cost necessary, including but not limited to materials, delivery, installation, insurance, applicable taxes, overhead and profit, labor burden, etc.

E. Should the quantity allowances be exceeded, change orders authorizing additional quantities shall use the same unit price as scheduled in Section 012200”Unit Prices” for additional cost.

F. At project closeout, credit all unused allowances remaining in the Schedule of Values to Owner by change order.

1.9 CONTINGENCY ALLOWANCES

A. Use the contingency allowance only as directed by Architect for Owner's purposes and only by Change Orders that indicate amounts to be charged to the allowance.

B. Contractor's overhead, profit, and related costs for products and equipment ordered by Owner under the contingency allowance are included in the allowance and are not part of the Contract Sum. These costs include delivery, installation, taxes, insurance, equipment rental, and similar costs.

C. Change Orders authorizing use of funds from the contingency allowance will include Contractor's related costs and reasonable overhead and profit margins.

D. Line items for each contingency allowance scheduled shall be included on the “Schedule of Values” included with applications for payment.

E. At Project closeout, credit unused amounts remaining in the contingency allowance to Owner by Change Order.

PART 2 PRODUCTS

2.1 MATERIALS

Products and or materials used in allowances shall be as defined or approved elsewhere in the Contract Documents.

PART 3 EXECUTION

3.1 PREPARATION

A. Coordinate materials and their installation for each allowance with related materials and installations to ensure that each allowance item is completely integrated and interfaced with related work.

3.2 SCHEDULE OF ALLOWANCES

A. Quantity Allowances

1. Include in the base bid an amount to fully remove 100 LF of existing interior sealant in CMU partitions and install 100 LF of new sealant. Existing joints shall be fully cleaned prior to installation of new sealant. This work may comprise of small quantities in multiple locations.

2. Include in the base bid an amount to remove 150 existing type APC#1 acoustical panel tiles and install 150 new type APC#1 acoustical panel tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain. This

3. Include in the base bid an amount to fully remove 100 LF of existing exterior sealant and install 100 LF of new sealant. The existing joints shall be fully cleaned prior to installation of new sealant. This work may comprise of small quantities in multiple locations.

4. Include in the base bid an amount to fully remove 100 LF of existing exterior brick mortar joints and repoint 100 LF of new brick mortar joints. The existing joint shall be fully cleaned prior to installation of new mortar. This work may comprise of small quantities in multiple locations.

5. Include in the base bid an amount to replace 100 LF of heat welded joints in existing resilient athletic flooring at Gym. The existing joints shall be fully cleaned prior to installation of new heat welded joints. This work may comprise of small quantities in multiple locations.

6. Include in the base bid an amount to remove and install 1,000 SF of roof insulation to match existing. This work may comprise of small quantities in multiple locations.

7. Include in the base bid an amount to remove and install 25,000 SF of subgrade and gravel base. This work may comprise of small quantities in multiple locations.

8. Include in the base bid an amount to replace (10) existing VTR pipes to be 8”-12” above roofing.

9. Include in the base bid an amount to replace 100 SF Pressure Treated 5/8" Plywood sheathing at roofs.

10. Include in the base bid an amount to replace 100 LF Pressure Treated 2x4 wood blocking at roofs.

11. Include in the base bid an amount to remove and install 10 wall-mounted doorstops (to match existing.)

12. Include in the base bid an amount to remove and install 20 door silencers (to match existing.)

13. Include in the base bid an allowance for painting 500 SF of interior split-face CMU in lieu of sealer. Portions of this work may occur in various locations within the Commons area. The Architect will issue the exact locations if, after cleaning and inspection of the split-face CMU, painting is determined to be required.

14. Include in the base bid an allowance to remove 25 existing type APC#2 acoustical panel ceiling tiles and install 25 new type APC#2 acoustical panel ceiling tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain. This work may comprise of small quantities in multiple locations.

B. Contingency Allowance(s):

1. Include in the base bid an amount of $100,000.00.

END OF SECTION 012100

012200 - Unit Prices

SECTION 012200 - UNIT PRICES

PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. The provisions of the General Conditions, Supplementary Conditions, Drawings, Specifications, and the Sections included under Division 1, General Requirements and References are included as a part of this Section as though bound herein.

1.2 SUMMARY

A. Section includes administrative and procedural requirements for unit prices.

B. Related Requirements:

1. Section 004322 “Unit Prices Form” for form for unit prices to be included with the Bid.

2. Section 012200 “Allowances” for allowances associated with unit prices.

3. Section 012600 "Contract Modification Procedures" for procedures for submitting and handling Change Orders.

4. Section 014000 "Quality Requirements" for general testing and inspecting requirements.

1.3 DEFINITIONS

A. Unit price is an amount incorporated in the Agreement, applicable during the duration of the Work as a price per unit of measurement for materials, equipment, or services, or a portion of the Work, added to or deducted from the Contract Sum by appropriate modification, if the scope of Work or estimated quantity allowances of Work required by the Contract Documents are increased or decreased.

1.4 PROCEDURES

A. Unit prices include all necessary material, plus cost for delivery, installation, insurance, applicable taxes, overhead, and profit.

B. Measurement and Payment: See Section 012100 “Allowances” and individual Specification Sections for work that requires establishment of unit prices. Methods of measurement and payment for unit prices are specified in those Sections.

C. Owner reserves the right to reject Contractor's measurement of work-in-place that involves use of established unit prices and to have this Work measured, at Owner's expense, by an independent surveyor acceptable to Contractor.

D. List of Unit Prices: A schedule of unit prices is included in Part 3. Specification Sections referenced in the schedule contain requirements for materials described under each unit price.

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.1 SCHEDULE OF UNIT PRICES

A. Unit Price No. 1: Fully remove 1 LF of existing interior caulking in CMU partitions and install 1 LF of new caulking. Existing joints shall be fully cleaned prior to installation of new caulk. This

B. Unit Price No. 2: Remove 1 (2’x2’) existing type APC#1 acoustical panel ceiling tiles and install 1 (2’x2’) new type APC#1 acoustical panel ceiling tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain. This work may comprise of small quantities in multiple locations.

012200 - Unit Prices

C. Unit Price 3: Fully remove 1 LF of existing exterior sealant and install 1 LF of new sealant. Existing joints shall be fully cleaned prior to installation of new sealant. This work may

D. Unit Price 4: Fully remove 1 LF of existing exterior brick mortar joints and repoint 1 LF of new exterior brick mortar joints (match existing). Existing joints shall be fully cleaned prior to the installation of new mortar. This work may comprise of small quantities in multiple locations.

E. Unit Price 5: Fully remove 1 LF of existing heat welded joints and install 1 LF of new heat welded joints in existing resilient athletic flooring at Gym. The existing joints shall be fully cleaned prior to installation of new heat welded joints. This work may comprise of small quantities in multiple locations.

F. Unit Price 6: Fully remove 1 SF of existing roof insulation and install 1 SF of new roof insulation to match existing. This work may comprise of small quantities in multiple locations.

G. Unit Price 7: Fully remove 1 SF of existing subgrade and gravel base and install 1 SF of new subgrade and gravel base. This work may comprise of small quantities in multiple locations.

H. Unit Price 8: Install 1 LF of additional VTR Piping to existing Vent Piping at roof.

I. Unit Price 9: Fully remove 1 SF of existing Pressure Treated 5/8" Plywood sheathing at roofs and install 1 SF of new Pressure Treated 5/8" Plywood sheathing at roof. This work may comprise of small quantities in multiple locations.

J. Unit Price 10: Fully remove 1 LF Pressure Treated 2x4 wood blocking at roofs and install 1 LF Pressure Treated 2x4 wood blocking at roofs. This work may comprise of small quantities in multiple locations.

K. Unit Price 11: Fully remove 1 wall-mounted doorstop and install 1 new wall-mounted doorstop to match existing.

L. Unit Price 12: Fully remove 1 door silencer and install 1 new door silencer to match existing.

M. Unit Price 13: Paint 1 SF of interior split-face CMU in lieu of 1 SF of sealer. Portions of this work may occur in various locations within the Commons area. The Architect will issue the exact locations if, after cleaning and inspection of the split-face CMU, painting is determined to be required.

N. Unit Price 14: Remove 1 existing type APC#2 acoustical panel ceiling tiles and install 1 new type APC#2 acoustical panel ceiling tiles to match all characteristics of existing acoustical panel ceiling tiles to remain. Existing acoustical panel ceiling grid to remain. This work may comprise of small quantities in multiple locations.

END OF SECTION 012200

012300 - Alternates

SECTION 012300 - ALTERNATES

PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. The provisions of the General Conditions, Supplementary Conditions, Drawings, Specifications, and the Sections included under Division 1, General Requirements and References are included as a part of this Section as though bound herein.

1.2 SUMMARY

A. Section includes administrative and procedural requirements for alternates.

B. Related Requirements.

1. Section 004323 “Alternates Form” for forms for alternates to be included with this bid.

1.3 DEFINITIONS

A. Alternate: An amount proposed by bidders and stated on the Bid Form for certain work defined in the bidding requirements that may be added to or deducted from the base bid amount if Owner decides to accept a corresponding change either in the amount of construction to be completed or in the products, materials, equipment, systems, or installation methods described in the Contract Documents.

1. Alternates described in this Section are part of the Work only if enumerated in the Agreement.

2. The cost or credit for each alternate is the net addition to or deduction from the Contract Sum to incorporate alternate into the Work. No other adjustments are made to the Contract Sum.

1.4 PROCEDURES

A. Coordination: Revise or adjust affected adjacent work as necessary to completely integrate work of the alternate into Project.

1. Include as part of each alternate, miscellaneous devices, accessory objects, and similar items incidental to or required for a complete installation whether or not indicated as part of alternate.

B. Notification: Immediately following award of the Contract, notify each party involved, in writing, of the status of each alternate. Indicate if alternates have been accepted, rejected, or deferred for later consideration. Include a complete description of negotiated revisions to alternates.

C. Execute accepted alternates under the same conditions as other work of the Contract.

D. Schedule: A schedule of alternates is included at the end of this Section. Specification Sections referenced in schedule contain requirements for materials necessary to achieve the work described under each alternate.

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.1 SCHEDULE OF ALTERNATES

A. Alternate No. 1:

Under this Additive Alternate, the Contractor shall perform all Work associated with Emergency Generator Monitoring, per specification section 230900 – Instrumentation and Control for HVAC, paragraph 3.13.K.7. This Work shall not be included in the Base Bid.

B. Alternate No. 2:

012300 - Alternates

Under this Additive Alternate, the Contractor shall perform all Work associated with Electric Utility Monitoring Control, per specification section 230900 – Instrumentation and Control for HVAC, paragraph 3.13.K.8. This Work shall not be included in the Base Bid.

C. Alternate No. 3:

Under this Additive Alternate, the Contractor shall perform all Work associated with Gas for HVAC, paragraph 3.13.K.9. This Work shall not be included in the Base Bid.

D. Alternate No. 4:

Under this Additive Alternate, the Contractor shall perform all Work associated with Water for HVAC, paragraph 3.13.K.10. This Work shall not be included in the Base Bid.

E. Alternate No. 5:

Under this Additive Alternate, the Contractor shall provide Project Sign as indicated on the drawings. This Work shall not be included in the Base Bid.

F. Alternate No. 6:

Under this Additive Alternate, the Contractor shall perform all Work associated with the replacement of (2) 7’-0” x 25’-0” Kalwall Skylights in Corridors as indicated on the drawings. This Work shall not be included in the Base Bid.

G. Alternate No. 7:

Under this Additive Alternate, the Contractor shall perform all Work associated with powder coating the steel beams supporting the cooling tower as indicated on the drawings. This Work shall not be included in the Base Bid.

END OF SECTION 012300

Instrumentation And Control For HVAC 230900 - 1

PBK Architects, Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

Bid Set - Addendum No 1 2026/01/28

SECTION 230900 - INSTRUMENTATION AND CONTROL FOR HVAC

PART 1 GENERAL

1.1 SUMMARY

A. This Section includes control equipment for HVAC systems and components, including control components for equipment not supplied with factory-wired controls.

1.2 WORK INCLUDED

A. Project Scope Description: Carver Road Middle School has an existing Johnson Controls DDC control system serving the building. This DDC system shall be replaced during this project and new components shall replace existing as required to achieve the sequences specified herein. The following is an abbreviated general overview of the scope. The full scope is described throughout this specification section and on the drawings. The DDC system currently controls water source heat pumps (WSHP’s), exhaust fans, and the central plant. Under this project, all WSHP’s are being replaced. Contractor shall provide new sensors and new DDC controllers at each WSHP. New refrigerant based 100% outdoor air units are replacing existing desiccant style energy recovery units. All rooftop air conditioning units and water source heat pumps are equipped with hot gas reheat, and require a humidity sensor which currently does not exist. The existing central plant controls shall be completely removed and replaced with a new LCD touch screen mechanical room interface panel to control the new central plant (e.g., one (1) boiler, one (1) hot water pump, two (2) loop water pumps, two (2) cooling water pumps and one (1) 2-cell cooling tower with a variable frequency drive for each motor. Certain monitoring functions are being added to the control system under this contract.

B. Contractor is advised that the construction under this project will be phased. As a result, the existing DDC control system shall remain operational during the construction period so that existing equipment operational and safety controls are preserved and maintained during each phase. In other words, while construction under Phase 1 is being performed, the remaining pieces of equipment for future phases shall remain operational under the existing control system. As new equipment and controls are installed under Phase 1, these new items shall be controlled by new controls that are specified in this section. Once all new and existing to remain equipment are connected to and controlled by the new DDC control system specified herein, Contractor may completely demolish the existing control system in its entirety as specified in the Contract Documents. Contractor shall be responsible for coordinating demolition of existing controls with Owner prior to removal to ensure proposed demolition meets Owner’s functional requirements.

C. Control contractor shall provide complete control system for all heating, ventilating and air conditioning (HVAC) systems and exhaust systems including all integral and field mounted devices and control wiring. All control components shall be provided under this section of the specifications unless specifically provided elsewhere. A complete and fully operational control system shall be provided for all mechanical systems furnished under Division 23 to achieve the sequence of control specified: (1) herein (2) in other specification section or (3) as required to achieve proper operation of the equipment.

D. This system shall include all devices specified herein and shall include, but is not limited to;

main DDC panels, standalone DDC controllers, software, WSHP central plant touch screen interface panel, temperature sensors, conventional thermostats, differential pressure transmitter, humidity sensors, relays, switches, contactors, two-way isolation control ball valves at WSHPs, variable frequency drives, current sensors, carbon monoxide sensors, transformers, makeup water meter, etc.

E. All existing control functions not mentioned in this specification section shall be maintained and incorporated into the new control system.

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PBK Architects, Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

F. DDC Control Flow Diagrams: In addition to the Sequence of Control for all equipment in this project, in the specifications, the drawing portion of the contract documents include graphical DDC control flow diagrams that are intended to show HVAC equipment and that equipment’s associated major control devices, such as dampers, duct mounted smoke detectors, temperature sensors, etc. These diagrams are not intended to be wiring diagrams or complete input/output summary diagrams, but are intended to assist the control contractor and the general contractor with a simplified and general overview of control components.

1.3 SUBMITTALS

A. Submit shop drawings and product data under provisions of Division 23 - Common

Requirements for HVAC Equipment to the Owner and Architect/Engineer.

B. Each submittal shall contain the following information, as appropriate, based on this particular project.

1. DDC control riser diagram showing all DDC controllers, and network wiring.

2. Single line schematics and flow diagrams showing the location of all control devices.

3. Points list for each DDC controller with input/output schedule.

4. Vender’s own written description for each sequence of operation.

5. Detailed bill of material for each panel.

6. Catalog cut sheets for all equipment used, including but not limited to: sensors, thermostats, actuators, etc.

7. DDC panel data.

8. Submittal drawing index sheet with control system legend.

C. Controls contractor shall not order material or begin field installation until receiving approved submittals.

D. Submit electrical requirements for power supply wiring including wiring diagrams for interlock and terminal to terminal control wiring, clearly indicating factory-installed and field-installed wiring associated with all equipment. Wiring diagrams shall show all point-to-point wiring connections between all components of the control system. No devices, conduit or wiring shall be installed until Contractor has received approved shop drawings from the Architect/Engineer.

E. Field quality-control test reports.

F. Operation and Maintenance Data: For HVAC instrumentation and control system, submit under the provisions of Division 23 - Closeout Document Requirements for HVAC.

G. Space Temperature Sensor Confirmation Letter: Prior to submitting control submittal to the

Architect/Engineer for review, the controls contractor shall confirm with the Owner’s facilities supervisor (Bruce Ballard, 770-367-7683) the type of sensor that the Owner desires, and all features (adjustable, push button override, etc.) that the Owner desires. Some sensor features may be indicated in this specification section or on the drawings for certain areas, but contractor shall arrange meeting with Owner to obtain sensor information for all areas. Provide signed letter from Owner’s HVAC maintenance department supervisor with sensor submittals confirming Owner has approved sensor types and features for all sensors.

1.4 QUALITY ASSURANCE

A. Installer Qualifications: Automatic control system manufacturer's authorized representative who is trained and approved for installation of system components required for this Project.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

C. Comply with ASHRAE 135 for DDC system components.

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PBK Architects, Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

D. Complete control system and submittal data for this system shall be prepared and provided by a factory authorized representative of the Control System Manufacturer with a minimum of five

(5) years’ experience in control systems of similar size and complexity. The control system manufacturer must be able to demonstrate 5 similar projects with control systems operating successfully in the field for a minimum of five years.

E. The control contractor shall be a factory authorized branch office that is regularly engaged in the engineering, programming, installation and service of the control systems of similar size and complexity. The controls contractor shall have a local branch office with a 100-mile radius of the job site. Emergency service shall be available on a 24 hour, seven day a week basis.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Factory-Mounted Components: Where control devices specified in this Section are indicated to be factory mounted on equipment, arrange for shipping of control devices to equipment manufacturer.

B. System Software: Update to latest version of software at Project completion.

C. Store products in manufacturer's unopened, labeled packaging until ready for installation. Store products within the range of manufacturer's absolute limits for environmental condition including, but not limited to, temperature/humidity.

1.6 COORDINATION

A. Coordinate location of thermostats, humidistats, and other exposed control sensors with plans and room details before installation.

1.7 WARRANTY

A. See Division 23 - Closeout Document Requirements for HVAC for warranty information.

B. Warranty shall cover all costs for parts, labor, travel and expenses for a period of one year from completion of system acceptance. Warranty shall apply to both hardware and software.

C. Emergency Service: The controls contractor shall restore the control system to proper operating condition within 24 hours after receiving a request for service.

1.8 CONTROLS COMPLETION SCHEDULE

A. Controls contractor shall coordinate with the General and Mechanical Contractor to allow completion of all control work one week before substantial completion. Controls contractor shall arrange a meeting one week before with the Owner to demonstrate that the entire sequence of control for all systems functioning as specified, and to the Owner’s satisfaction.

B. Controls contractor shall also demonstrate that the entire sequence of control for all systems is fully capable of being controlled and monitored bat Owner’s remote DDC control center.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Since Spalding County Schools has existing Delta iNTREO DDC control system, the contractor shall provide either Delta controls as the manufacturer and installed by Controls Concepts, Inc.

(CCI) (no equal) as the sole installer of the Delta iNTREO control system specified herein.

Contact with CCI is Rob Blain (770) 296-3236.

2.2 WIRING

A. All control wiring (including but not limited to control, interlock, sensor, thermostat, etc.) shall be provided under this section of these specifications. If 120-volt AC power for control devices is required and if Division 26 electrical drawings do not indicate 120-volt AC is provided to control devices, the control contractor is responsible for providing 120-volt AC as specified herein.

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PBK Architects, Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

2.3 CONTROL COMPONENTS AND THEIR FUNCTION

A. Cabinets: Provide and install control cabinets constructed of heavy gauge steel or aluminum and consisting of a one piece rectangular or square ring, a sub-panel and a door with continuous hinge, and quick turn latch with keyed lock. Unless otherwise specified, all controllers, and other equipment furnished as part of the control system which are not required to be mounted on mechanical equipment shall be cabinet mounted. All wiring connections shall be made inside the cabinet. All electrical devices shall be wired to a numbered terminal strip. No field wiring shall be required within the cabinet except to the terminal strip.

B. Conduit and Raceway: Provide and install under this section.

1. Refer to Division 26 - Electrical for material requirements for conduit and flexible conduit. Conduit sleeves with bushing shall be provided at all control wiring penetrations through walls.

2. Outlet Boxes: Refer to Division 26. Provide and install under this section.

C. Conductors:

1. 50 to 600 volts: Refer to Division 26 for requirements.

2. Below 50 volts: Minimum size for individual conductors is AWG. No. 18. Minimum conductor sizes for multi-conductor cables is AWG No. 22. Provide shielded cable as required to avoid EMI where conduits natural shielding effect is insufficient. Conductors shall be sized within acceptable voltage drop parameters.

3. Plenum Rated Cable: Plenum rated cable with flame spread of 25 or less and smoke development of 50 or less as tested by ASTM E84.

4. Conductor Insulation: “TFFN”, unless noted otherwise.

5. Taps and Joints: Mechanically and electrically sound.

6. Tape: Per Division 26. Provide and install under this section.

7. Lacing: Per Division 26. Provide and install under this section.

8. Lubricants: Per Division 26. Provide and install under this section.

9. Color Code: All low voltage control conductors shall be color coded by factory or provided with numbered ends.

D. Contactors and Disconnects:

1. All contactors for equipment specified in Division 23 shall be provided under this section of the specifications unless explicitly shown furnished by Electrical on the Electrical Drawings. Provide herein all relays and contactors necessary for the proper operation of all Division 23 equipment.

2. All electrical disconnects for equipment specified in Division 23 shall be provided under this section of the specifications unless explicitly shown furnished by Electrical on the Electrical Drawings.

3. Control Relays and Contactors: Relays for control purposes shall be the plug-in type with plastic enclosure surrounding the relay with contacts rated for a minimum of 110VAC and 24VDC. Relay shall operate properly over -25°C to 55°C ambient. Relay shall be UL recognized. Pick up voltage shall be a maximum of 80% of nominal and drop off voltage shall be a maximum of 30% of nominal. Contact rating, in-rush current, number of poles, coil voltage, etc. shall be appropriate for the application. Provide neon or LED “ON” indicator lamp.

E. Override timer: Individual override timers located as indicated on the drawings shall start certain noted equipment. Override timers shall be flush wall mounted type of 1-hour duration. Face plate shall be graduated in hours and shall not include a “hold” feature. Mount on wall 4'-6" above finished floor, unless noted otherwise.

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PBK Architects, Georgia, P.C. Renovations to COWAN ROAD ELEMENTARY SCHOOL

F. Conventional Thermostats: All conventional thermostats shall be mounted on wall at 4'-6" above finished floor, unless noted otherwise. Thermostats replacing existing shall be at the same height as existing. Conventional thermostats may be provided by either the controls contractor or the equipment manufacturer. All setpoints shall be adjustable.

1. Gas Unit Heater Space Thermostats: Thermostats shall snap action, 24-volt low voltage type with adjustable temperature range.

2. Exhaust Fan Thermostats: Wall mounted line voltage, snap action type construction to make when the temperature rises above set point 85°F (adjustable), with an adjustable range from 50°F to 86°F. Provide sub base with off-auto-on switch to allow manual starting of fan, automatic operation or manual shutoff of the fan.

G. HVAC Shutdown Relay: An HVAC shutdown relay shall be provided by Division 26 and shall be located near the DDC panel. Certain HVAC equipment shall be wired through this “HVAC Shutdown Relay” to achieve the control sequence specified herein. All noted equipment in Part 3 “Execution” shall shut down in the event of closure of this HVAC shutdown relay which is activated by the main fire alarm panel.

H. Control Transformer: Provide transformers at all equipment as necessary to power control system. Provide at each piece of equipment with a field mounted DDC controller, a field mounted 24V control transformer adequately sized for the DDC controller and other controls required for proper unit operation. Transformers shall be protected with in-line fuses on both the primary and secondary sides in accordance with Table 450.3(B) of the National Electric Code, unless the following primary current conditions apply. Transformers with a primary current less than 2 amperes shall be permitted to be fused on the primary side only provided the fuses do not exceed 300% of the transformer’s rated primary current. Transformers with a primary current less than 9 amperes shall be permitted to be fuse protected on the primary side only provided the fuses do not exceed 167% of the transformer’s rated primary current. If control contractor intends to utilize any on board transformer provided by the HVAC equipment manufacturer, he shall provide signed statement from the equipment manufacturer indicating the allowable additional “VA” load that is available for additional devices.

I. Suspended Horizontal WSHP Drain Pan Water Level Detection Device: Field mounted device shall be a magnetic float switch designed to be installed in drain pans of…