25_002_Addendum_3.pdf

F I N A N C E

P.O. BOX 447 ALBANY, GA 31702 | PHONE: 229.431.3211 | FAX: 229.431.2184 | www.albanyga.gov

08/16/2024

TO: All Potential Bidders

SUBJECT: Building Stabilization Albany Herald

Bid Ref. #25-002

Bid Opening Date & Time: August 30, 2024 @ 2:30 p.m.

ADDENDUM NO. 3

The items contained in this addendum are added to and/or deleted from and become part of the specifications and proposal documents for the above-referenced Invitation to Bid. Bidders must acknowledge receipt of the Addendum on the Addendum Acknowledgement Form, located in the invitation to bid, when the bids are submitted.

ADD/DELETE

DELETE:

(page 9 scope of work) Alternate 4: 126 North Washington Street

• Stabilization of the exterior as indicated on drawings.

Alternate 5: 126 North Washington Street

• Repair of exterior envelope as indicated on drawings.

Alternate 6: 132 Pine Avenue & 128 Pine Avenue

• Repair of exterior envelope as indicated on drawings.

ADD:

Alternate 4: 126 North Washington Street

• Stabilization and repair of the exterior envelope as indicated on drawings.

Alternate 5: 132 Pine Avenue & 128 Pine Avenue

• Stabilization and repair of exterior envelope as indicated on drawings.

http://www.albanyga.gov/

ADD:

TPO Roofing specifications to the scope of work. (see attached)

ADD:

Revised Bid Form. (see attached)

QUESTION & ANSWERS

1. To clarify, the unit cost requested is NOT part of the Base Bid? Answer: The 1500 square foot replacement decking is to be included in the base bid. That is for all three roofs. The unit price is also to be quoted on the bid form in the space provided, that is not to be added to the base bid.

2. Can you clarify the difference between Alternates 4 and 5 per the scope of work? Answer: See above changes to the scope of work and revised bid form. (attached)

3. Could you please provide clarification on the type of roof system specified for installation?

Understanding the exact requirements will help ensure that our proposal aligns with your expectations. Answer: TPO or equivalent is requested.

End of Addendum 3

Ricky Gladney Ricky Gladney, Buyer

Cc: Tripp Swilley, City of Albany Don Gray, City of Albany Scott Tennison, City of Albany Lequrica Gaskins, City of Albany Gene Dunwody, Dunwody and Beeland

* COMPLETE AND SUBMIT *

BID FORM

CITY OF ALBANY

Building Stabilization Albany Herald Bid Reference No. 25-002

Bid of: ____________________________ Date: ______________________ (Company Name)

To : Procurement Division

222 Pine Avenue, Suite 260 Albany, Ga. 31701

We, the undersigned, do hereby declare that we have carefully examined the site of the proposed installations.

We do hereby agree to furnish all material, transportation, equipment, apparatus systems, labor, and supervision required to do all work as listed within the scope above for the Lump Sum Price indicated below:

Base Bid Lump Sum less any alternates plus replacement decking with an allowance of 1500 square foot to be added to base bid for all three roofs:

Base Bid: $________________________________________________ $Unit cost________________ (figures)

$________________________________________________ $Unit cost________________ (written)

Alternate 1: $________________________________________________ (figures)

(written)

Alternate 2: $________________________________________________ (figures)

(written)

Alternate 3: $________________________________________________ (figures)

(written)

Alternate 4: $________________________________________________ (figures)

(written)

Alternate 5: $________________________________________________ (figures)

Total lump sum bid:

Note: The City is requiring a single general contractor to bid on all line items

Total Bid $__________________________________________ (figures)

Bid shall be made on a Lump Sum basis for all specified work. Work shall begin at a mutually agreed upon date and a Notice to Proceed and shall be completed in accordance with contract time stated herein. This bid complies with the Instruction to Bidders contained herein, all Addenda, (hereinafter listed and acknowledged as received), which are hereby made a part hereof and which shall govern in all matters of the work hereby proposed.

CERTIFICATION: The undersigned being duly sworn, hereby declares and affirms that they are an authorized representative of the above-named firm and further declares and affirms that the bid provided herein and the statements provided herein are true and correct and are sufficiently complete so as not to be misleading.

Authorized Signature Company Name

Address City State Zip

Tax ID # Telephone # Fax #

Seal (If Incorporated) Email

Building Stabilization Albany Herald Bid Ref. #25-002

THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 1

SECTION- 075423 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Adhered thermoplastic polyolefin (TPO) roofing system.

2. Roof insulation.

1.2 DEFINITIONS

A. Roofing Terminology: Definitions in ASTM D 1079 and glossary in NRCA's "The

NRCA Roofing and Waterproofing Manual" apply to work of this Section.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachments to other work.

C. Samples for Verification: For the following products:

1. Sheet roofing, of color required.

2. Walkway pads or rolls, of color required.

1.4 INFORMATIONAL SUBMITTALS

A. Research/Evaluation Reports: For components of roofing system, from ICC-ES.

B. Sample Warranties: For manufacturer's special warranties.

1.5 CLOSEOUT SUBMITTALS

A. Maintenance Data: For roofing system to include in maintenance manuals.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty.

Albany Herald

Albany Georgia

THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 2

1.7 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within specified warranty period.

1. Warranty Period: 30 years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Carlisle SynTec Incorporated.

2. Cooley Engineered Membranes.

3. Custom Seal Roofing.

4. Firestone Building Products.

5. Flex Roofing Systems.

6. GAF Materials Corporation.

7. GenFlex Roofing Systems.

8. Johns Manville.

9. Mule-Hide Products Co., Inc.

10. Versico Incorporated.

B. Source Limitations: Obtain components including roof insulation and fasteners for roofing system from same manufacturer as membrane roofing or manufacturer approved by membrane roofing manufacturer.

2.2 PERFORMANCE REQUIREMENTS

A. Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155.

B. Impact Resistance: Roofing system shall resist impact damage when tested according to

ASTM D 3746 or ASTM D 4272.

C. Energy Performance: Roofing system shall have an initial solar reflectance of not less than 0.70 and an emissivity of not less than 0.75 when tested according to CRRC-1.

D. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A; for application and roof slopes indicated; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.

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THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 3

2.3 TPO ROOFING

A. Fabric-Reinforced TPO Sheet: ASTM D 6878, internally fabric- or scrim-reinforced, uniform, flexible TPO sheet.

1. Thickness: 45 mils,nominal.

2. Exposed Face Color: White.

2.4 AUXILIARY ROOFING MATERIALS

A. General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with roofing.

1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction.

B. Sheet Flashing: Manufacturer's standard unreinforced TPO sheet flashing, 55 mils (1.4

mm) thick, minimum, of same color as TPO sheet.

C. Bonding Adhesive: Manufacturer's standard.

D. Slip Sheet: Manufacturer's standard, of thickness required for application.

E. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Global 4470, designed for fastening roofing to substrate, and acceptable to roofing system manufacturer.

F. Miscellaneous Accessories: Provide metal termination bars, metal battens, pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, lap sealants, termination reglets, and other accessories.

2.5 ROOF INSULATION

A. Polyisocyanurate Board Insulation: ASTM C 1289, Type II, Class 1, Grade 3, felt or glass-fiber mat facer on both major surfaces.

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

a. Atlas Roofing Corporation.

b. Carlisle SynTec Incorporated.

c. Dyplast Products.

d. Firestone Building Products.

e. GAF Materials Corporation.

f. Hunter Panels.

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THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 4

g. Insulfoam LLC; a Carlisle company.

h. Johns Manville.

i. Rmax, Inc.

B. Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/4 inch per 12 inches (1:48) unless otherwise indicated.

C. Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Fabricate to slopes indicated.

2.6 INSULATION ACCESSORIES

A. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Global 4470, designed for fastening roof insulation to substrate, and acceptable to roofing system manufacturer.

B. Insulation Adhesive: Insulation manufacturer's recommended adhesive formulated to attach roof insulation to substrate or to another insulation layer.

C. Protection Mat: Woven or nonwoven polypropylene, polyolefin, or polyester fabric, water permeable and resistant to UV degradation, type and weight as recommended by roofing system manufacturer for application.

2.7 ASPHALT MATERIALS

A. Roofing Asphalt: ASTM D 312, Type III or Type IV.

2.8 WALKWAYS

A. Flexible Walkways: Factory-formed, nonporous, heavy-duty, slip-resisting, surface-textured walkway pads or rolls, approximately 3/16 inch (5 mm) thick and acceptable to roofing system manufacturer.

PART 3 - EXECUTION

3.1 ROOFING INSTALLATION, GENERAL

A. Install roofing system according to roofing system manufacturer's written instructions.

B. Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of roofing system at the end of the workday or when rain is forecast. Remove and discard temporary seals before beginning work on adjoining roofing.

C. Install roofing and auxiliary materials to tie in to existing roofing to maintain weathertightness of transition.

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THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 5

3.2 INSULATION INSTALLATION

A. Coordinate installing roofing system components so insulation is not exposed to precipitation or left exposed at the end of the workday.

B. Install tapered insulation under area of roofing to conform to slopes indicated.

C. Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 2.7 inches (68 mm) or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm) in each direction.

1. Where installing composite and noncomposite insulation in two or more layers, install noncomposite board insulation for bottom layer and intermediate layers, if applicable, and install composite board insulation for top layer.

D. Mechanically Fastened and Adhered Insulation: Install each layer of insulation to deck using mechanical fasteners specifically designed and sized for fastening specified board-type roof insulation to deck type.

1. Fasten first layer of insulation to resist uplift pressure at corners, perimeter, and field of roof.

2. Set each subsequent layer of insulation in a solid mopping of hot roofing asphalt, applied within plus or minus 25 deg F (14 deg C) of equiviscous temperature.

3. Set each subsequent layer of insulation in insulation adhesive, firmly pressing and maintaining insulation in place.

3.3 BASE FLASHING INSTALLATION

A. Install sheet flashings and preformed flashing accessories, and adhere to substrates according to roofing system manufacturer's written instructions.

B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate, and allow to partially dry. Do not apply to seam area of flashing.

C. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet flashing.

D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot-air weld side and end laps to ensure a watertight seam installation.

E. Terminate and seal top of sheet flashings and mechanically anchor to substrate through termination bars.

THERMOPLASTIC-POLYOLEFIN ROOFING (TPO) 075423 - 6

3.4 WALKWAY INSTALLATION

A. Flexible Walkways: Install walkway products in locations indicated. Heat weld to substrate or adhere walkway products to substrate with compatible adhesive according to roofing system manufacturer's written instructions.

3.5 PROTECTING AND CLEANING

A. Protect roofing system from damage and wear during remainder of construction period.

When remaining construction does not affect or endanger roofing, inspect roofing for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner.

B. Correct deficiencies in or remove roofing system that does not comply with requirements, repair substrates, and repair or reinstall roofing system to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements.

C. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.

END OF SECTION 075423

075423 SF - THERMOPLASTIC POLYOLEFIN (TPO) ROOFING.pdf