CTR075036_Amendment_Summary_2.pdf

ARIZONA DEPARTMENT OF TRANSPORTATION

1655 W. Jackson Street, MD 100P

Phoenix, AZ 85007

Contract Amendment Summary

CONTRACTOR: SD Crane Builders Inc. AMENDMENT NO.: Two (2) DESCRIPTION: Tucson North MVD Remodel

Pursuant to the Uniform Terms and Conditions, Section 5, Contract Changes, the above referenced contract is amended. Summary of changes is as follows:

1. Line item CTR075036-1 Tucson North MVD Remodel per the technical specifications & drawings, increased from $2,527,624.84 to $2,537,623.85 total cost. See attached CO.

2. Line item CTR075036-3 Base Bid Tax increased from $142,937.18 to $143,502.6. See attached CO.

3. All other terms, conditions and provisions of this contract remain unchanged.

Construction Contract Change Order Summary No. ____

Contract/APP No. Contract/APP Amendment No:

Project Name: Project No: Statutory Review No:

Design Professional: Contractor: ADOT Project Manager:

ALL OTHER REQUIREMENTS, SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED

ACKNOWLEDGEMENT AND AUTHORIZATION

Page | 1 of 1

1. Check box(es) below best describing the Construction Change Order to the Contract:

☐ Contractor cost increase to Contract due to Additional Work.

☐ Contractor cost reduction to Contract.

☐ Contractor to increase number of calendar days to date of Substantial Completion of the Project.

☐ Contractor “no cost” change to Contract.

☐ Use of Contingency ☐ Other (Provide Description) _______________________________________________________________.

2. Contractor shall provide complete description of reduced or Additional Work, including documents in support of the Change Order (e.g., drawings, material substitution literature, cost reduction or increase detail including breakout of labor, materials, markup and tax). Contractor shall use the Construction Change Order Worksheet (Exhibit J1) to provide a detailed breakdown of any change to the Project Cost.

3. By signing and executing this Change Order, the Contractor and Agency agree to a price for the Additional Work, as detailed below. This price shall cover any and all Costs associated with the Additional Work including, but not limited to, Costs associated with delay of the Contractor's Work, if any.

Should the Additional Work impact the Schedule, the Agency and Contractor have agreed to extend the date for Substantial Completion as reflected below.

4. Contractor agrees that the payment authorized by this Change Order, if any, is in full settlement of any and all causes of action, including but not limited to, any claim resulting from delays to the time to Substantial Completion caused by this Change Order which Contractor or any of its Subcontractors, suppliers and the officers, agents, and employees of each of them, may now have or may assert in the future against the Agency, or its officers, employees and agents, arising out of, or associated with, this construction Change Order.

In accordance with the terms of the Contract, the following detailed changes are proposed (attach additional information as needed):

Original Contract Sum $

Previous Change Orders to Contract $

Net Change for this Change Order to Contract (attach Exhibit J1 for details as needed) $

New Contract Sum $

Number of Calendar Days for Time Extended for Substantial Completion for this Change Order Days

Revised Substantial Completion Date due to this Change Order

Contractor (Firm Name): Address: Authorized Signature and Date:

Design Professional (Firm Name): Address: Authorized Signature and Date:

ADOT Procurement Officer Name:

Agency Name and Address: Authorized Signature and Date: ADOT Project Manager Name:

Agency Name and Address: Authorized Signature and Date:

State of Arizona Department of Transportation

206 S 17th Ave Phoenix, AZ 85007

ADOA Chief Compliance Officer Name:

Agency Name and Address: Authorized Signature and Date:

This Change Order shall modify the Contract only upon the signed approval of the Contractor, Design Professional, ADOT Procurement Officer as specified in the signature block. When signed by all parties this Change Order becomes effective immediately and the Contractor shall proceed with the change(s) identified and approved.

3,021,688.18

154,780.45

10,564.45

3,187,033.08

N/A

CTR075036 02

CTR075036 HD-24-15

HD-24-15 SD Crane Andrew May

See attached J1

SD Crane Builders Inc.

Shive-Hattery

Andrew May

Patrick Holt

Elizabeth Blakley

1215 W. Rio Salado Pkwy #109 Tempe, AZ 85281 4330 N Campbell Ave Suite 268 Tucson, AZ 85718 1655 W. Jackson St.

Phoenix, AZ 85007 1400 W Washington St, #B200 Phoenix, AZ 85007 1655 W Jackson St.

Phoenix, AZ

ADOT Tucson North MVD Renovation

06/17/2025

06/17/2025

06/17/2025

06/24/2025

07/01/2025

COR No.2

Date: 5/12/25

Item No.

Subcontractor Trades

Q ty

U n it s

Unit Price Extension Q ty

U n it s

Unit Price Extension Totals

Added Cost For ASI #2

HVAC Specification -$ 8,360.00$ 8,360.00$

2 -$ -$ -$

3 -$ -$ -$

4 -$ -$ -$

5 -$ -$ -$

6 -$ -$ -$

8,360.00$

Owner Request 4.00% 334.40$

Hidden Condition 10.00% 869.44$

3.00% 286.92$

Prepurchase Materials 0.50% 49.25$

Omission in Construction docs 1.00% 99.00$

Transfer to/from Contingency 5.655% 565.44$

Other 10,564.45$

Approval of this Change Order Request will increase (decrease) the Schedule by: 0 Calendar Days

Form 8.14. rev 8.10.2021 r5

Total Cost

Address Authorized Signature & Date

Construction Services Manager Address Authorized Signature & Date

Contractor

Design Professional Address Authorized Signature & Date

ADOA Project Manager Address Authorized Signature & Date

Fee

This Change will require Statutory Review: Yes No

General Conditions

Builders Risk

Tax

Insurance

Bond

Schedule of Values by Trade

The Contractor hereby requests a Change in the Contract Sum and/or Time, conforming to Article 1.2 of the Uniform Terms and Conditions, the Work described herein will not start until this Change Order Request has been signed by all parties.

Labor Material

Check the box best describing the Cause of this Change Subtotal

Exhibit J1

Change Order Request

State of Arizona General Services Division 1400 West Washington St

Phoenix, AZ 85007

Project Name: ADOT Tucson North MVD Renovation State Project No:CTR075036

Contractor Project No: 24-322Contractor: SD Crane Builders Inc.

SD Crane

Shive-Hattery

Patrick Holt

Andrew May

1215 W Rio Salado Pkwy, #109 Tempe, AZ 85281

4330 N. Campbell Rd Suite 268 Tucson, AZ 85718

1655 W. Jackson St Phoenix, AZ 85007

1400 W Washington Phoenix, AZ 85007

06/17/2025

06/17/2025

06/17/2025

06/24/2025

25-118

3565 E. Golf Links Rd. CHANGE ORDER Tucson, AZ 85713

520.791.7049 (office) 520.791.2819 (fax)

ROC#'s 096695, 096704, 167371

DATE: CHANGE ORDER #

TO: PHONE #

FAX #

JOB NAME:

LOCATION:

EXCEL JOB NO:

CONTRACT NO:

DESCRIPTION OF WORK TO BE PERFORMED ON THIS CHANGE ORDER:

MATERIALS CREDIT

MATERIALS ADD:

LABOR:

SUB TOTAL:

OH @ 10%

SUB TOTAL:

PROFIT @ 5%

TOTAL TO CREDIT TO CONTRACT:

TOTAL ADD OF DAYS TO COMPLETE:

NOTE: This Change Order becomes part of and in conformance with the existing contract.

By: By:

May 5, 2025

Approval needed before materials to be ordered

Added costs for ASI #2 HVAC Specifications

Credit for standard flex duct and spiral duct: $2100

SD Crane

Tempe, AZ 85281

1215 W. Rio Salado Pkwy #109

520.790.5413

ADOT MVD North

$724

$7,973

$7,962

7330 N. Shannon Rd. Tucson, AZ 85741

25-118

Increase for Therma flex: $6,419, Added cost for FlexFlow elbows: $18.50 ea. X 84 pieces = $1554

Labor to install elbows: .25 hrs each @ $65/hr x 84 pieces = $1365

$7,238

$1,365

($2,100)

$398

SUBCONTRACTOR CONTRACTOR

Authorized SignatureAuthorized Signature

EXCEL MECHANICAL, INC.

$8,360

Project 2172304350

October 24, 2024

ARCHITECTURAL SUPPLEMENTAL INSTRUCTIONS

A.S.I. NO. #02

Owner Architect Consultant Contractor SHEET OF Field Rep.

Other DATE

PROJECT: ADOT Tucson North MVD Renovation PROJECT DATED:

7330 N Shannon Rd Tucson, AZ 85741

OWNER: Arizona Department of Transportation CONTRACT TYPE:

1655 W Jackson St, MD129F Phoenix, AZ 85007

CONTRACTOR: SD Crane ARCHITECT’S PROJECT NO:

1901 E University Dr, Suite 330 Mesa, AZ 85203 CONTRACTOR’S PROJECT NO:

A) The following supplemental instructions are included in the original scope of work and shall be carried out in accordance with contract documents, with no change to contract sum.

B) Please acknowledge your acceptance and return a copy to the Architect.

Description:

Mechanical specification sections 23 0553, 23 0593, 23 0713, 23 2300, 23 3100, 23 3300, 23 3423, and 23 4000 are provided.

Attachments:

• ADOT Tucson North MVD – Division 23 Specifications

BY ACCEPTED

Marcus Attson Shive-Hattery CONTRACTOR DATE

X

April 10, 2025

1 1

ADOT

2172304350

23-361

Identification for HVAC Piping and Equipment

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SECTION 23 0553 - IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Identification Nameplates and Labels.

B. Tags.

C. Pipe markers.

D. Ceiling tacks.

1.2 REFERENCE STANDARDS

1.3 ADMINISTRATIVE REQUIREMENTS

A. Coordination:

1. Verify final designations for equipment, systems, and components to be identified prior to fabrication of identification products.

B. Sequencing:

1. Do not conceal items to be identified, in locations such as above suspended ceilings, until identification products have been installed.

2. Do not install identification products until final surface finishes and painting are complete.

1.4 SUBMITTALS

A. See Section 01 3300 - Submittals, for additional submittal requirements, requests for substitutions and procedures.

B. Scope Verification: Submit letter indicating scope of work. Include list of wording, symbols, letter size, and color coding for mechanical identification.

C. Nameplates and Labels Summary Sheet: Submit an organized sheet, or sheet set, with all pertinent data to be included on the equipment nameplates per the criteria indicated in part 3.02 of this section.

D. Product Data: Provide manufacturers catalog literature for each product required.

PART 2 PRODUCTS

2.1 MANUFACTURERS:

A. Brady Corporation: www.bradycorp.com.

B. Brimar Industries, Inc.: www.pipemarker.com.

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C. Kolbi Pipe Marker Co.: www.kolbipipemarkers.com.

D. Seton Identification Products: www.seton.com.

E. or approved equal.

2.2 IDENTIFICATION APPLICATIONS

A. Air Handling Units and Fans (i.e. air moving equipment): Nameplates.

B. Automatic Controls: Identification Tags - Coordinate with section 23 0900.

C. Control Panels: Identification Tags - Coordinate with section 23 0900.

D. Dampers and Equipment Locations (where located above ceilings): Ceiling tacks.

E. Room Sensors (i.e. temperature, humidity, CO2, etc.): Labels.

F. Thermostats: Labels.

2.3 NAMEPLATES AND LABELS

A. Nameplate Materials:

1. Indoor Clean, Dry Locations: Use plastic, stainless steel, or anodized aluminum nameplates.

2. Outdoor Locations: Use stainless steel or anodized aluminum nameplates.

B. Plastic Nameplates: Two or three layer laminated acrylic with beveled edges, mounting holes and adhesive backing; minimum thickness of 1/16 inch (minimum thickness of 1/8 inch when dimension is greater than 4 inches); engraved text with contrast of wording against background color.

C. Stainless Steel and Anodized Aluminum Nameplates: With mounting holes and adhesive backing; minimum thickness of 1/32 inch; engraved or etched text with contrast of wording against background color. Outdoor durability is typically 10+ years.

D. Mounting Holes for Mechanical Fasteners: Two, centered on sides for sizes up to 1 inch; four, located at corners for larger sizes.

E. Refer to plans for nameplate configuration and minimum data required.

F. Identification Labels:

1. Materials: Use self-adhesive laminated plastic labels; UV, chemical, water, heat, and abrasion resistant.

(a) Use only for indoor locations.

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2. Text: Use factory pre-printed or machine-printed text to indicate associated piece of equipment. Do not use handwritten text unless otherwise indicated.

2.4 TAGS

A. Plastic Identification Tags: Laminated three-layer plastic with engraved black letters on light contrasting background color. Tag size minimum 1-1/2 inch square.

1. Materials: Use self-adhesive laminated plastic labels; UV, chemical, water, heat, and abrasion resistant.

(a) Use only for indoor locations.

(b) Use aluminum tags for outdoor applications.

2. Text: Use factory engraved text to indicate associated piece of equipment. Do not use handwritten text unless otherwise indicated.

2.5 CEILING TACKS

A. Description: Steel with 3/4 inch diameter color coded head.

B. Color code as follows:

1. HVAC Equipment: Yellow.

2. Life Safety Dampers: Red.

PART 3 EXECUTION

3.1 PREPARATION

A. Degrease and clean surfaces to receive adhesive for identification materials.

B. Do not install adhesive products when ambient temperature is lower than recommended by manufacturer.

3.2 INSTALLATION

A. Install identification products centered, level, and parallel with lines of item being identified.

1. For outdoor items, locate identification products on north side; where possible.

B. Secure nameplates to exterior surfaces of enclosures using stainless steel screws or rivets and to interior surfaces using self-adhesive backing or epoxy cement.

1. Do not use adhesives on exterior surfaces except where substrate can not be penetrated.

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C. Install self-adhesive labels and markers to achieve maximum adhesion, with no bubbles or wrinkles and edges properly sealed.

D. Replace self-adhesive labels and markers that exhibit bubbles, wrinkles, curling or other signs of improper adhesion.

E. Install tags with corrosion resistant chain.

F. Install plastic pipe markers in accordance with manufacturer's instructions.

G. Provide ceiling tacks to locate HVAC items above lay-in panel ceilings. Locate in corner of ceiling panel closest to item intended to be identified.

END OF SECTION - 23 0553 23 0553

Testing, Adjusting, and Balancing for HVAC

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SECTION 23 0593 - TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Testing, adjustment, and balancing of air systems.

B. Measurement of final operating condition of HVAC systems.

C. Fire / Smoke Damper Testing

1.2 REFERENCE STANDARDS

A. AABC (NSTSB) - AABC National Standards for Total System Balance, 7th Edition

2016.

B. ASHRAE Std 111 - Measurement, Testing, Adjusting, and Balancing of Building

HVAC Systems 2008, with Errata (2019).

C. SMACNA (TAB) - HVAC Systems Testing, Adjusting and Balancing 2002.

1.3 SUBMITTALS

A.

1.4 SUBMITTALS

A. See Section 01 3000 - Administrative Requirements, for submittal procedures.

B. Installer Qualifications: Submit name of adjusting and balancing agency and TAB supervisor for approval within 30 days after award of Contract.

1. Company name, address, contact information, and name of TAB Supervisor.

2. AABC: Include proof of current AABC Test and Balance Technician Certification for applicable technicians and Test and Balance Engineer Certification for Supervisor.

3. Proof of experience as required by sections 3.1D & E.

4. NOTE: Prior approved companies listed under section 3.1E are NOT required to provide qualifications. Prior approved companies must provide a letter from the TAB

Agency indicating that they will test and balance the project.

C. TAB Plan: Submit a written plan indicating the testing, adjusting, and balancing standard to be followed.

1. Scope: Submit evidence that scope of project is understood. Provide letter on TAB agency letterhead indicating the systems & components to be tested, adjusted & balanced. Include all additional scope items listed in part 3

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D. Final Report: Provide certified reports, in accordance with the TAB standard followed.

Indicate deficiencies in systems that would prevent proper testing, adjusting, and balancing of systems and equipment to achieve specified performance.

1. Provide reports in soft cover, letter size, 3-ring binder manuals, complete with index page and indexing tabs, with cover identification at front and side. Include set of reduced drawings with air outlets and equipment identified to correspond with data sheets, and indicating thermostat / sensor locations.

2. Include actual instrument list, with manufacturer name, serial number, and date of calibration.

3. Form of Test Reports: Where the TAB standard being followed recommends a report format use that; otherwise, follow ASHRAE Std 111.

4. Include technician's notes, documenting found conditions, special circumstances, unresolved issues, commentary on differences between required and balanced conditions, etc.

5. Indicate as-tested condition of each filter.

6. Include the following on the title page of each report:

(a) Name of Testing, Adjusting, and Balancing Agency.

(b) Address of Testing, Adjusting, and Balancing Agency.

(c) Telephone number of Testing, Adjusting, and Balancing Agency.

(d) Project name.

(e) Project location.

(f) Project Architect.

(g) Project Engineer.

(h) Project Contractor.

(i) Project altitude.

(j) Report date.

1.5 COORDINATION

A. Coordinate the efforts of factory-authorized service representatives for systems and equipment, HVAC controls installers, and other mechanics to operate HVAC systems and equipment to support and assist testing, adjusting, and balancing activities.

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B. Coordinate testing of fire dampers, smoke dampers and combination fire / smoke dampers with the GC and mechanical contractor. Dampers with integral sleeves may be tested prior to installation. Access to dampers and damper positions shall be verified by the TAB contractor after installation.

PART 2 PRODUCTS

2.1 PLUGS

A. Provide plastic plugs to seal holes drilled in ductwork for test purposes.

2.2 INSULATION REPAIR MATERIAL

A. Refer to Section 23 0713 DUCT INSULATION. Provide for repair of insulation removed or damaged for TAB work.

PART 3 EXECUTION

3.1 GENERAL REQUIREMENTS

A. Perform total system balance in accordance with one of the following:

1. AABC (NSTSB), AABC National Standards for Total System Balance.

B. Begin work after completion of systems to be tested, adjusted, or balanced and complete work prior to Substantial Completion of the project.

C. TAB Agency Qualifications:

1. Company specializing in the testing, adjusting, and balancing of systems specified in this section.

2. Having minimum of three years documented experience.

3. Certified by one of the following:

(a) AABC, Associated Air Balance Council: www.aabc.com/#sle; upon completion submit AABC National Performance Guaranty.

D. TAB Supervisor and Technician Qualifications: Certified by same organization as

TAB agency.

E. Pre-Qualified TAB Agencies:

1. General Air Control Inc. Tucson (AABC).

2. Arizona Air Balance Company

3. TAB Technology, Inc

3.2 EXAMINATION

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A. Ensure that the building enclosure is complete, including but not limited to, all structural components, windows and doors installed, door hardware complete, ceilings complete, stair, elevator and mechanical shafts complete, roof systems complete, all plenums sealed, etc.

B. Verify that systems are complete and operable before commencing work. Ensure the following conditions:

1. Systems are started and operating in a safe and normal condition.

2. Temperature control systems are installed complete and operable.

3. Proper thermal overload protection is in place for electrical equipment.

4. Final filters are clean and in place. If required, install temporary media in addition to final filters.

5. Duct systems are clean of debris.

6. Fans are rotating correctly.

7. Air coil fins are cleaned and combed.

8. Access doors are closed and duct end caps are in place.

9. Air outlets are installed and connected.

10.Duct system leakage is minimized.

C. Submit field reports. Report defects and deficiencies that will or could prevent proper system balance.

D. Beginning of work means acceptance of existing conditions.

3.3 PREPARATION

A. Coordinate with the Construction Team:

1. Obtain a current set of contract documents (drawings, specifications, and approved submittals), including all current approved change orders / contract modifications.

2. Develop a project schedule that coordinates the work of other disciplines and provides adequate time in the construction process to allow successful completion of the TAB work.

3.4 ADJUSTMENT TOLERANCES

A. Air Handling Systems: Adjust to within plus 10 percent or minus 5 percent of design for supply and exhaust systems.

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B. Outside Air Systems: Adjust from plus 10 percent to minus 0 percent (do not balance below the scheduled values)

C. Air Outlets and Inlets: Adjust total to within plus or minus 10 percent of design to space. Adjust outlets and inlets in space to within plus or minus 10 percent of design.

3.5 RECORDING AND ADJUSTING

A. Ensure recorded data represents actual measured or observed conditions.

B. Permanently mark settings of valves, dampers, and other adjustment devices allowing settings to be restored. Set and lock memory stops.

C. After adjustment, take measurements to verify balance has not been disrupted or that such disruption has been rectified.

D. Leave systems in proper working order, replacing belt guards, closing access doors, closing doors to electrical switch boxes, and restoring thermostats to specified settings.

E. There shall be at least one direct path with fully open dampers from the fan to an air inlet or outlet. Additionally, if a system contains branch dampers, there shall be at least one wide-open path downstream of every adjusted branch damper.

3.6 AIR SYSTEM PROCEDURE

A. Adjust air handling and distribution systems to provide required or design supply, return, and exhaust air quantities at site altitude.

B. Make air quantity measurements in ducts by Pitot tube traverse of entire cross sectional area of duct.

C. Measure air quantities at air inlets and outlets.

D. Adjust distribution system to obtain uniform space temperatures free from objectionable drafts and noise.

E. Use volume control devices to regulate air quantities only to extend that adjustments do not create objectionable air motion or sound levels. Effect volume control by duct internal devices such as dampers and splitters.

F. Vary total system air quantities by adjustment of fan speeds. Provide drive changes required. Vary branch air quantities by damper regulation.

G. Measure static air pressure conditions on air supply units, including filter and coil pressure drops, and total pressure across the fan. Make allowances for 50 percent loading of filters.

H. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for design conditions.

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3.7 FIRE AND SMOKE DAMPER VERIFICATION & TESTING

A. Prior to installation, test fire, fire/smoke & smoke dampers to assure correct operation.

B. Test installed fire, fire/smoke & smoke dampers to assure correct operation. Verify that an adequately sized access door has been installed for each damper. For fire dampers, open the access door, disconnect the fusible link, and allow the damper to close. Operation should be smooth and the damper must close completely. Then reset the damper. For fire/smoke & smoke dampers, verify that the damper is free to operate thru its full range of motion, sampling tubes are clean and correctly oriented, interlocks operate correctly. Open the access door, activate the damper, and observe operation. The damper must close quickly and completely. Then reset the damper and observe its complete opening. Ensure all access panels and doors are closed upon completion.

3.8 SCOPE

A. Test, adjust, and balance all mechanical equipment on this project. Items include, but are not limited to the following:

B. Air Systems:

1. Air Filters.

2. Air Inlets and Outlets.

3.9 MINIMUM DATA TO BE REPORTED

A. General, for each component of each system.

1. Mark (unit tag)

2. Location

3. Manufacturer

4. Model

5. Serial Number

B. Unitary Equipment, Packaged and Split Systems

1. Required & Final: Supply, Return, Outside Air CFM at both minimum and maximum supply air speeds.

2. Required & Final: Static Pressure Drop across each component (such as filters, coils, fan, etc.).

3. Required & Final: Calculated total External Static Pressure

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4. Evaporator and Condenser Motor: Nameplate & Actual: Voltage, Phase, Amps, Speed, Service Factor. Amps shall be measured for each phase.

5. Compressor(s): Quantity, Voltage, Phase, Nameplate & Actual Amps, Speed. If multiple compressors, include data for each.

6. Evaporator Coil Dry Bulb and Wet Bulb Temperatures IN and OUT

7. Condenser Coil Dry Bulb Temperature IN and OUT

8. Heating Section Dry Bulb Temperature IN and OUT

9. Outside Air Dry Bulb and Wet Bulb Temperature at time of test

C. Air Cleaning Devices (filters)

1. Thickness & type (cartridge, pleated, etc.)

2. MERV Rating

3. Observed condition

4. Inlet static pressure

5. Outlet static pressure

D. Air Distribution Tests:

1. Air terminal number.

2. Room number/location.

3. Terminal type.

4. Terminal size.

5. Area factor.

6. Design velocity.

7. Design air flow.

8. Test (final) velocity.

9. Test (final) air flow.

END OF SECTION - 23 0593 23 0593

Duct Insulation

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SECTION 23 0713 - DUCT INSULATION

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Duct Wrap Insulation.

B. Duct liner.

1.2 RELATED REQUIREMENTS

A. Section 07 8400 - Firestopping.

B. Division 9 - Finishes

C. Section 23 3100 - HVAC Ducts and Casings: Sheet metal ducts.

1.3 REFERENCE STANDARDS

A. ASTM B209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and

Plate 2014.

B. ASTM B209M - Standard Specification for Aluminum and Aluminum-Alloy Sheet and

Plate (Metric) 2014.

C. ASTM C518 - Standard Test Method for Steady-State Thermal Transmission

Properties by Means of the Heat Flow Meter Apparatus 2021.

D. ASTM C553 - Standard Specification for Mineral Fiber Blanket Thermal Insulation for

Commercial and Industrial Applications 2013 (Reapproved 2019).

E. ASTM C612 - Standard Specification for Mineral Fiber Block and Board Thermal

Insulation 2014 (Reapproved 2019).

F. ASTM C916 - Standard Specification for Adhesives for Duct Thermal Insulation 2020.

G. ASTM C1290 - Standard Specification for Flexible Fibrous Glass Blanket Insulation

Used to Externally Insulate HVAC Ducts 2016 (Reapproved 2021).

H. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building

Materials 2023c.

I. Comply with all applicable ASTM standards referencing pipe, duct and equipment insulation manufacturing, testing, installation, storage.

J. ASTM E96/E96M - Standard Test Methods for Gravimetric Determination of Water

Vapor Transmission Rate of Materials 2022a, with Editorial Revision (2023).

K. Comply with NAIMA for installation of insulation products.

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L. SMACNA (DCS) - HVAC Duct Construction Standards Metal and Flexible 2020.

M. UL 723 - Standard for Test for Surface Burning Characteristics of Building Materials

Current Edition, Including All Revisions.

N. Comply with UL 181 "erosion test" and "mold growth and humidity test" for air stream surface materials.

1.4 SUBMITTALS

A. See Section 01 3300 - Submittals, for additional submittal requirements, requests for substitutions and procedures.

B. Product Data: Provide product description, thermal characteristics.

C. Insulation schedule: Provide, on company letterhead, narrative or table format schedule indicating service, insulation type and thickness, jacketing requirements, etc.

to completely describe scope of insulating work.

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications: Company specializing in manufacturing products of the type specified in this section with not less than three years of documented experience.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labelled with manufacturer's identification, including product density and thickness.

B. Store insulation materials and accessories to prevent damage and protect from weather, dirt, fumes, water, and construction debris in clean dry space. Store in manufacturer's original containers and packaging.

1.7 FIELD CONDITIONS

A. Insulated piping located outdoors shall be protected from the weather until jacketed.

1.8 FIELD CONDITIONS

A. Maintain ambient temperatures and conditions required by manufacturers of adhesives, mastics, and insulation cements.

B. Maintain temperature before, during and after installation for minimum period of 24 hours or as recommended by the insulation & vapor barrier manufacturers.

C. Ensure products are completely protected from moisture until complete vapor barrier and weatherproof jacketing is fully installed.

PART 2 PRODUCTS

2.1 REGULATORY REQUIREMENTS

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A. Surface Burning Characteristics: Flame spread index/Smoke developed index of

25/50, maximum, when tested in accordance with ASTM E84, UL 723, ASTM E84, or

UL 723.

B. Comply with the latest adopted edition of the International Energy Conservation Code including all local amendments. Comply with latest edition of ASHRAE/IESNA

Standard 90.1, "Energy Standard for Buildings except Low-Rise Residential

Buildings." In case of differences, the most stringent shall apply.

2.2 MANUFACTURERS:

A. CertainTeed Corporation: www.certainteed.com.

B. JohnsManville: www.jm.com.

C. Knauf Insulation: www.knaufusa.com.

D. Owens Corning Corporation: www.ocbuildingspec.com.

E. Substitutions: See Section 01 6000 - Product Requirements.

2.3 GLASS FIBER, FLEXIBLE (WRAP)

A. Insulation: ASTM C 553; Flexible blanket, glass fibers bonded with a thermosetting resin, noncombustible, jacketed with a reinforced vapor barrier facing with 2” factory-applied longitudinal seam.

1. k-factor = 0.29 Btu-in / hr.-sq. ft. - deg. F at 75 degrees F mean temp

2. density = minimum 3/4 lb./cubic foot

3. Maximum Service Temperature: 250 degrees F (faced)

4. Water vapor permeability = less than 0.02 perm (jacket)

5. Vapor Retarder Jacket: FSK or vinyl-film vapor barrier, secured with a 2” taping tab on one edge, other seams, tears or punctures in the vapor barrier sealed with factory pressure sensitive tape or vapor barrier mastic compatible with the jacket.

6. Equivalent to CertainTeed “SoftTouch” Duct Wrap

B. Vapor Barrier Jacket:

1. Kraft paper with glass fiber yarn and bonded to aluminized film.

2. Moisture Vapor Permeability: 0.029 ng/Pa s m (0.02 perm inch), when tested in accordance with ASTM E96/E96M.

3. Secure with pressure sensitive tape.

C. Vapor Barrier Lap Adhesive: Compatible with insulation.

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D. Insulating Cement/Mastic: ASTM C195; hydraulic setting on mineral wool.

E. Insulating Cement: ASTM C449.

2.4 DUCT LINER

A. Acoustical flexible duct liner composed of rotary-type glass fibers bonded with a thermosetting resin overlaid with a durable, flame retardant, black composite surface on the air stream side.

1. Air-stream surface shall contain an EPA registered anti-microbial agent to reduce the potential of microbial growth that may affect the liner.

2. Maximum Service Temperature: 250 degrees F

3. Maximum Velocity on Mat or Coated Air Side: 6,000 ft./min.

4. Water Vapor Sorption: 3% or less, by weight

5. density = minimum 1.5 lb./cubic foot

6. k-factor = 0.24 Btu-in / hr.-sq. ft. - deg. F at 75 degrees F mean temp

7. Adhesive: UL listed waterproof type.

8. Fasteners: Pre-fabricated galvanized steel weld pins.

9. R-value:

(a) 1 inch thick = 4.2 hr.-sq. ft. - deg. F / Btu at 75 degrees F mean temp

(b) 1.5 inch thick = 6.0 hr.-sq. ft. - deg. F / Btu at 75 degrees F mean temp

(c) 2 inch thick = 8.0 hr.-sq. ft. - deg. F / Btu at 75 degrees F mean temp

10.Noise Reduction Coefficient:

(a) 1 inch thick = 0.70 or higher based on "Type A mounting".

(b) 1.5 inch thick = 0.80 or higher based on "Type A mounting".

(c) 2 inch thick = 0.95 or higher based on "Type A mounting".

11.Equivalent to CertainTeed “ToughGard R” Duct Liner with Enhanced Surface

PART 3 EXECUTION

3.1 EXAMINATION

A. Test ductwork for design pressure prior to applying insulation materials.

B. Verify that surfaces are clean, foreign material removed, and dry.

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3.2 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Install in accordance with NAIMA National Insulation Standards.

C. Paint all visible duct liner pins flat black.

D. Insulated Ducts Conveying Air Below Ambient Temperature:

1. Provide insulation with vapor barrier jackets.

2. Finish with tape and vapor barrier jacket.

3. Continue insulation through walls, sleeves, hangers, and other duct penetrations.

4. Insulate entire system, including fittings, joints, flanges, fire dampers, flexible connections, and expansion joints.

E. External Duct Insulation (wrap) Application:

1. Secure insulation with vapor barrier with wires and seal jacket joints with vapor barrier adhesive or tape to match jacket.

2. Continue insulation through walls, sleeves, hangers, and other duct penetrations except where prohibited by code.

3. Install without sag on underside of duct. Use mechanical fasteners where necessary to prevent sagging. Lift duct off trapeze hangers and insert spacers. The protruding ends of the fasteners should be cut off flush after the speed clips are installed, and then, sealed with approved vapor barrier tape or adhesive.

4. Seal any vapor barrier penetrations with vapor barrier tape and/or adhesive.

5. Insulate duct take-off fittings to maintain continuous insulation and vapor barrier.

F. Duct and Plenum Liner Application:

1. Completely cover ducts designated to be lined with duct liner. Install manufacturer's air-stream rated surface exposed to the air stream. All joints shall be neatly butted and there shall be no interruptions or gaps.

2. Adhere insulation with adhesive for 90 percent coverage.

3. Secure insulation with mechanical liner fasteners. Refer to SMACNA HVAC Duct

Construction Standards - Metal and Flexible for spacing. Pin length should be as recommended by the liner manufacturer. Adhesive style pins are NOT

ACCEPTABLE.

4. Seal and smooth joints. Seal and coat transverse joints.

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5. All exposed edges of the liner must be factory or field coated. Install metal nosing at all liner exposed edges wherever liner is preceded by unlined metal .

6. Seal liner surface penetrations with approved adhesive.

3.3 SCHEDULES

A. In addition to those locations listed below, refer also to notes on drawings for special conditions.

B. Interior rectangular supply and return air conditioning ductwork:

1. Fiberglass Duct Liner

(a) Thickness: 1.5" (R6.0)

(b) Jacket: N/A

C. Interior round supply and return air conditioning ductwork

1. Flexible Fiberglass Blanket

(a) Thickness: 2-1/8” (R-6.0 assuming 25% compression)

(b) Jacket: FSK vapor barrier with taping tab

END OF SECTION 23 0713

Refrigerant Piping

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SECTION 23 2300 - REFRIGERANT PIPING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Piping and accessories

1.2 RELATED REQUIREMENTS

A. Section 23 0500 - Common Work Results for HVAC: General conditions, pipe supports.

B. Section 23 0719 - HVAC Piping Insulation.

C. Section 23 8126.13 - Small Split-System Heating and Air Conditioning Units

1.3 REFERENCE STANDARDS

A. AHRI 710 - Performance Rating of Liquid-Line Driers 2009.

B. AHRI 730 (I-P) - Flow Capacity Rating of Suction Line Filters and Suction Line Filter

Driers 2013 (Reapproved 2014).

C. ASHRAE Std 15 - Safety Standard for Refrigeration Systems 2022, with Errata

(2023).

D. ASME B16.22 - Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings

2021.

E. ASME B31.5 - Refrigeration Piping and Heat Transfer Components 2022.

F. ASME B31.9 - Building Services Piping 2020.

G. ASTM B88 - Standard Specification for Seamless Copper Water Tube 2022.

H. ASTM B280 - Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service 2020.

I. AWS A5.8M/A5.8 - Specification for Filler Metals for Brazing and Braze Welding 2019.

1.4 SYSTEM DESCRIPTION & REQUIREMENTS

A. Where more than one piping system material is specified ensure system components are compatible and joined to ensure the integrity of the system is not jeopardized.

Provide necessary joining fittings. Ensure flanges, union, and couplings for servicing are consistently provided.

B. Provide pipe hangers and supports in accordance with ASME B31.5 unless indicated otherwise. Coordinate with Section 23 0500.

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C. Liquid Indicators:

1. Provide line size liquid indicators in main liquid line leaving condenser.

2. If receiver is provided, install in liquid line leaving receiver.

3. Use line size on leaving side of liquid solenoid valves.

D. Valves:

1. Provide service valves on suction and discharge of compressors.

2. Provide gage taps at compressor inlet and outlet.

3. Provide gage taps at hot gas bypass regulators, inlet and outlet.

E. Refrigerant Charging (Packed Angle) Valve: Use in liquid line between receiver shut-off valve and expansion valve.

F. Filter-Driers (as required per manufacturer):

1. Provide a filter-drier immediately ahead of liquid-line controls, such as thermostatic expansion valves, solenoid valves, and moisture indicators.

2. Use a filter-drier on suction line just ahead of compressor.

3. Use sealed filter-driers in lines smaller than 1/2 inch outside diameter.

4. Use sealed filter-driers in systems utilizing hermetic compressors.

5. Use replaceable core filter-driers in lines of 1/2 inch outside diameter or greater.

6. Use replaceable core liquid-line filter-driers in systems utilizing receivers.

7. Use filter-driers for each solenoid valve.

G. Flexible Connectors: Utilize at or near compressors where piping configuration does not absorb vibration.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver and store piping and specialties in shipping containers with labeling in place.

B. Protect piping and specialties from entry of contaminating material by leaving end caps and plugs in place until installation.

C. Dehydrate and charge components such as piping and receivers, seal prior to shipment, until connected into system.

PART 2 PRODUCTS

2.1 REGULATORY REQUIREMENTS

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A. Comply with ASME B31.9 for installation of piping system.

B. Products Requiring Electrical Connection: Listed and classified by UL, as suitable for the purpose indicated.

2.2 PIPING

A. Copper Tube: ASTM B280, H58 hard drawn or O60 soft annealed.

1. Fittings: ASME B16.22 wrought copper.

2. Joints: Braze, AWS A5.8M/A5.8 BCuP silver/phosphorus/copper alloy.

2.3 FLEXIBLE ELASTOMERIC CELLULAR INSULATION

A. Manufacturer:

1. Aeroflex USA, Inc.: Model Aerocel: www.aeroflexusa.com

2. Armacell International; Model AP Armaflex: www.armacell.com.

3. K-Flex USA; Model Insul-Tube or Insul-Lock or K-Flex Clad WT: www.kflexusa.com.

4. Substitutions: See Section 01 6000 - Product Requirements.

B. Insulation: Preformed flexible elastomeric cellular rubber insulation complying with

ASTM C 534 Grade 1; use molded tubular material wherever possible.

1. k-factor = 0.27 Btu-in / hr.-sq.ft.-deg.F at 75 degrees F mean temp

2. Water vapor permeability = 0.08 perm-in

3. Water absorption = 0.2 % by volume

4. Minimum Service Temperature: -40 degrees F.

5. Maximum Service Temperature: 220 degrees F.

6. Connection: Waterproof vapor barrier adhesive.

C. Insulation Adhesive: Air dried, contact adhesive, compatible with insulation.

1. Products:

(a) Aeroflex USA, Inc.: Model Aerocel Aeroseal: www.aeroflexusa.com

(b) Armacell; Model Armaflex 520 BLV Adhesive (low VOC): www.armacell.com.

(c) Nomaco, Inc.; Model K-Flex 720 LVOC: www.nomacokflex.com.

(d) Substitutions: See Section 01 6000 - Product Requirements.

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D. Insulated Pipe Supports: Pre-fit, load bearing, vapor-tight, compatible with insulation, equivalent k-value to the adjoining insulation.

1. Products:

(a) Aeroflex USA, Inc.: Model Aerofix-U: www.aeroflexusa.com

(b) Armacell; Model Armafix: www.armacell.com.

(c) Nomaco, Inc.; Model K-Flex 360: www.nomacokflex.com.

(d) Substitutions: See Section 01 6000 - Product Requirements.

2.4 INSULATION JACKETING

A. Aluminum Jacket: ASTM B 209 (ASTM B 209M) formed aluminum sheet with full coverage 3 mil moisture retarder barrier on internal face.

1. Manufacturers:

(a) ITW Insulation Systems; Pabco-Childers Metals: www.itwinsulation.com.

(b) Substitutions: See Section 01 6000 - Product Requirements

2. Thickness: 0.016 inch sheet.

3. Finish: Embossed.

4. Color: factory finished white with baked-on acrylic or polyester paint

5. Joining: Longitudinal slip joints and 2 inch laps.

6. Fittings: 0.024 inch thick die shaped fitting covers with factory attached protective liner, color-matched to the jacketing.

7. Metal Jacket Bands: minimum 3/8 inch (10 mm) wide; 0.010 inch (0.25 mm) thick stainless steel

PART 3 EXECUTION

3.1 GENERAL

A. Recover 100% of refrigerant prior to modifying any portion of refrigeration systems. Charge systems after work is complete. Add refrigerant as required to comply with manufacturer's settings. Additional refrigerant shall be included at no cost to the owner.

B. Under no circumstances shall refrigerant be discharged into the atmosphere.

C. Where installed lengths of refrigerant piping is determined to result in a derate in the equipment capacity, the Contractor shall notify the owner, Architect and Engineer in writing immediately.

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3.2 PREPARATION

A. Ream pipe and tube ends. Remove burrs.

B. Remove scale and dirt on inside and outside before assembly.

C. Prepare piping connections to equipment with flanges or unions.

3.3 INSTALLATION

A. Install refrigeration specialties in accordance with manufacturer's instructions.

B. Route piping in orderly manner, with plumbing parallel to building structure, and maintain gradient.

C. Install piping to conserve building space and avoid interference with use of space.

D. Group piping whenever practical at common elevations and locations. Slope piping one percent in direction of oil return - as directed by the manufacturer.

E. Install piping to allow for expansion and contraction without stressing pipe, joints, or connected equipment.

F. Refrigerant piping runs shall be made as short as practical and shall be made using one continuous piece of pipe without joints where possible.

1. Where installed lengths of refrigerant piping is determined to result in a derate in the equipment capacity, the Contractor shall notify the owner, Architect and Engineer in writing immediately.

G. Pipe Hangers and Supports:

1. Install in accordance with Section 23 0500 and ASME B31.5.

2. Where several pipes can be installed in parallel and at same elevation, provide multiple or trapeze hangers.

3. Isolate uninsulated copper from contact with other metals, such as at support locations). Wrap pipe / tube with half-lapped 10 mil tape or utilize manufacturer's plastic inserts.

H. Arrange piping to return oil to compressor. Provide traps and loops in piping, and provide double risers as required. Slope horizontal piping in direction of flow.

I. Provide clearance for installation of insulation and access to valves and fittings.

J. Flood piping system with nitrogen when brazing.

K. Follow ASHRAE Std 15 procedures for charging and purging of systems and for disposal of refrigerant.

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L. Provide replaceable cartridge filter-driers, with isolation valves and valved bypass.

M. Fully charge completed system with refrigerant after testing.

N. Insulation:

1. Verify that piping has been tested before applying insulation materials.

2. Verify that surfaces are clean and dry, with foreign material removed.

3. Install in accordance with manufacturer's instructions and NAIMA National Insulation

Standards.

4. Insulation shall be applied in a neat and workmanlike manner. Contractor shall be required to remove and replace all insulation not applied in strict accordance with manufacturer's specifications, NAIMA Standards, and/or not presenting a neat appearance.

5. Do not expose insulation to the weather.

6. Seal all joints vapor-tight using manufacturers standard adhesive sealant. Seal butt ends using adhesive sealant. Fabricate meter-cut fitting covers and assemble with adhesive sealant. Refer to part 2 of this Specification for product info.

7. Provide continuous insulation with vapor barrier. Insulate fittings, joints, and valves of like material and thickness as adjacent pipe. Fabricate fitting & accessory covers per manufacturer's details - for example: mitered elbows.

8. Elastomeric piping insulation systems shall utilize structural insulation pipe supports / hanger inserts at all hanger and support locations. Seal hanger insert and seal insert to adjoining pipe insulation using manufacturer's contact adhesive. Provide additional insulating tape or saddles as recommended by the manufacturer. Refer to

Part 2 of this Specification for product info.

O. Insulation Jacketing:

1. Jacketing shall have complete coverage and be weather-tight.

2. Jacketing shall be pre-rolled to the appropriate diameter. Hem edges over.

3. Jacketing on horizontal piping shall have the seams located at 3 o'clock, 6 o'clock or

9 o'clock. The outer lap of the seam shall be from the top to prevent water and dirt from entering the seam.

4. Jacketing shall be secured to the insulating product, using bands, a minimum of 2 places per 3 foot section of insulation. Provide additional bands as required to make jacketing weather-tight and to prevent sagging.

5. Seal all joints in jacketing with approved UV resistant, flexible, outdoor sealant, rated for excellent adhesion to aluminum. Color shall match jacketing.

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3.4 FIELD QUALITY CONTROL

A. See Section 01 4000 - Quality Requirements, for additional requirements.

B. Pipe pressure testing, evacuation, system charging and startup testing shall be in accordance with the manufacturer's requirements. Testing shall be as follows unless manufacturer's requirements are more stringent:

1. Pressure test piping at 1.5 times maximum system operating pressure - hold test for

1 hour with no drop in pressure allowed.

2. Perform triple evacuation to 500 microns or less (or as recommended by the equipment manufacturer). Hold each test for minimum 1 hour. Break vacuum with dry nitrogen (except for final which uses refrigerant).

3. Satisfactory testing & evacuation shall be complete prior to insulating piping.

END OF SECTION 23 2300 23 2300

HVAC Ducts and Casings

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SECTION 23 3100 - HVAC DUCTS AND CASINGS

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Metal Ductwork.

B. Flexible Ductwork.

C. Duct Sealants.

D. Duct cleaning.

1.2 RELATED REQUIREMENTS

A. Division 9 - Architectural Finishes

B. Section 23 0593 - Testing, Adjusting, and Balancing for HVAC.

C. Section 23 0713 - Duct Insulation: External insulation and duct liner.

D. Section 23 3300 - Air Duct Accessories.

E. Section 23 3700 - Air Outlets and Inlets.

1.3 REFERENCE STANDARDS

A. ASTM A36/A36M - Standard Specification for Carbon Structural Steel 2019.

B. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated

(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process 2023.

C. ASTM C 582 - Standard specification for contact - molded reinforced thermosetting plastic laminates for corrosion resistant equipment.

D. ASTM D 3982 - Standard specification for contact-molded fiberglass ducts and hoods.

E. ASTM D 2996 - Standard specification for Filament-Wound Glass-Fiber-Reinforced

Thermoset Resin Pipe

F. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building

Materials 2023c.

G. NFPA 90A - Standard for the Installation of Air-Conditioning and Ventilating Systems

2024.

H. NPS 15-69 - Standards specification for Custom Contact-Molded Reinforced -

Polyester Chemical - Resistant Process Equipment.

I. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA)

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1. Thermoset FRP Duct Construction Manual Rev. 2 (2016)

J. ICC-ES (International Code Council Evaluation Service):

1. LC 1014 PMG-Listing Criteria for Underground Plastic Ducts

2. EG290-Evaluation Guideline for Underground Plastic Air Ducts

K. SMACNA (DCS) - HVAC Duct Construction Standards Metal and Flexible 2020.

L. UL 181 - Standard for Factory-Made Air Ducts and Air Connectors Current Edition, Including All Revisions.

M. UL 723 - Standard for Test for Surface Burning Characteristics of Building Materials

Current Edition, Including All Revisions.

1.4 SUBMITTALS

A. See Section 01 3300 - Submittals, for additional submittal requirements, requests for substitutions and procedures.

B. Project Record Documents: Record actual locations of ducts and duct fittings.

Record changes in fitting location and type. Show additional fittings used.

1.5 FIELD CONDITIONS

A. Do not install duct sealants when temperatures are less than or greater than those recommended by sealant manufacturers.

B. Maintain temperatures within acceptable range during and after installation of duct sealants.

PART 2 PRODUCTS

2.1 DUCT ASSEMBLIES

A. Regulatory Requirements: Construct ductwork to comply with NFPA 90A standards.

2.2 MATERIALS

A. Galvanized Steel for Ducts: Hot-dipped galvanized steel sheet, ASTM A653/A653M

FS Type B, with G90/Z275 coating.

B. Mechanical Duct Joining Systems:

1. Rectangular Ductwork:

(a) Flanged duct transverse joint joining system consisting of manufacturer's galvanized steel flanges with…