PROJECT MANUAL FOR

Construction Documents

October 21, 2016

COMMUNITY COLLERE OF

DENVER – BNSF WELDING

STUDIO – PHASE II

2570 31ST STREET,

DENVER, COLORAOD 80205

Project No: 17-033

Community College of Denver October 21, 2016 BNSF Welding Studio – Phase II

TABLE OF CONTENTS

DIVISION 23 - HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC)

SECTION 230010 - MECHANICAL GENERAL PROVISIONS

SECTION 230050 - BASIC MECHANICAL MATERIALS & METHODS

SECTION 230529 - HANGERS AND SUPPORTS FOR HVAC

SECTION 233113 - METAL DUCTS

SECTION 233300 - AIR DUCT ACCESSORIES

DIVISION 26 – ELECTRICAL

SECTION 260010 – ELECTRICAL GENERAL PROVISIONS

SECTION 260519 – LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

SECTION 260526 – GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

SECTION 260529 – HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

SECTION 260533 – RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

SECTION 260544 – SLEEVES AND SLEEVE SEALS FOR ELECTRICAL RACEWAYS AND

CABLING

SECTION 260553 – IDENTIFICATION FOR ELECTRICAL SYSTEMS

SECTION 262416 – PANELBOARDS

SECTION 262726 – WIRING DEVICES

SECTION 262816 – ENCLOSED SWITCHES AND CIRCUIT BREAKERS

SECTION 265100 – INTERIOR LIGHTING

SECTION 283111 – DIGITAL, ADDRESSABLE FIRE-ALARM SYSTEM

MECHANICAL GENERAL PROVISIONS 23 00 10 - 1

SECTION 23 00 10

MECHANICAL GENERAL PROVISIONS

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. The General Conditions, Special Conditions and Contract Documents are part of these specifications. Consult them further instructions and be governed by the requirements thereunder.

1.02 DESCRIPTION

A. Work Included

1. Furnish all labor and materials and perform all operations necessary for the installation of complete and operating mechanical systems subject to the conditions of the contract.

The work also includes the completion of such mechanical and electrical details not mentioned or shown which are necessary for the successful operation of all systems; this includes the furnishing of all materials for filling systems to make them operable, including water, refrigerant, oil, grease, antifreeze and brine. Prove satisfactory operation of all equipment and controls to the MECHANICAL ENGINEER on request.

B. Work Not Included

1. Certain labor and materials may be furnished and/or installed under other divisions of these specifications. Coordinate with other trades and arrange the work to make the parts fit together. The following items are to be accomplished under other divisions of these specifications.

a. Temporary Heat: See "Temporary Heat" Paragraph in Part 1 of this Specification Section and Division 01.

b. Electrical Equipment and Wiring: See "Electrical Equipment and Wiring for Mechanical Division" Paragraph in Part 3 of this Specification Section.

C. Equipment Furnished by Owner

1. The Owner will award contracts, which will commence concurrently with this contract.

Specifically this work will include:

a. Equipment Installation: Refer to appropriate drawings for equipment furnished by the Owner.

2. Rough-in service pipes to locations as required by architectural and mechanical drawings and equipment shop drawings. Provide service valves on all pipes except waste and vent pipes, plug or cap these. Final connections to equipment shall be made by Contractor.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 2

1.03 PROVISIONS

A. Work performed under this division of the specifications shall conform to the requirements of Division 1, and the mechanical drawings and all items hereinafter specified.

1. Prior to any work being performed under this division, electrical drawings and specifications. If any discrepancies occur between them and the mechanical drawings and specifications, report discrepancies to the Architect in writing and obtain written instructions for the work.

2. Mechanical drawings are diagrammatic, but shall be followed as closely as actual construction of the building will permit. All changes from drawings necessary to make the mechanical work conform to the building as constructed shall be made without additional cost to the Owner.

3. All work and materials covered by drawings and specifications shall be subject to review at any time by representatives of the Architect and Owner. If the Owner’s agent finds any materials or installation that does not conform to these drawings and specifications, Contractor shall remove the material from the premises and correct the installation to the satisfaction of the agent.

4. In acceptance or rejection of installed mechanical systems, no allowance will be made for lack of skill on the part of the installers.

1.04 EXAMINATION OF PREMISES/SITE

A. Visit the premises site before submitting bid as no extras will be allowed for lack of knowledge of existing conditions.

1.05 CODES AND STANDARDS

A. Conform to applicable sections of NFPA 13 and 24.

B. Conform to the National Electrical Code, 2011 Edition.

C. Conform to all applicable State and Local Codes.

D. In case of difference between these specifications, codes, laws, industry standards, and/or utility company regulations the most stringent shall govern.

E. Americans with Disabilities Acts (ADA) and American National Standards Institute (ANSI) 117.

1.06 PERMITS, FEES AND NOTICES

A. Notify proper authorities when work is ready for inspections required by applicable codes, rules and regulations, allowing sufficient time for inspections to be made without hindering progress of the work. Furnish to the Owner copies of inspection certificates of acceptance.

1.07 EXISTING UTILITIES

A. The plans indicate the location, type and sizes of various utilities within the site where known.

These utilities are indicated as accurately as possible. If utilities are encountered during construction, which are not shown on the drawings, ask for instructions from the Architect. Any relocation or remodeling required will then be directed by change order. Assume all

MECHANICAL GENERAL PROVISIONS 23 00 10 - 3

responsibility for protection of all utilities, shown or not, and repair any damage caused by this construction at no extra charge to the Owner.

1.08 EXISTING CONDITIONS

A. Existing systems and conditions shown on drawings for existing buildings are to be noted “for guidance only”. The Mechanical Contractor shall field check all existing conditions prior to bidding and is to include in his bid an allowance for removal and/or relocation of existing ductwork, piping, fixtures, or other equipment and adapt new and existing mechanical system to all other work as required.

B. Existing ductwork, equipment, piping, etc. which are not indicated for reuse become the property of the Contractor. However, fixtures, pumps, fans, fire protection equipment, etc. shall become the property of the Owner unless noted otherwise.

C. System outages shall be permitted only at times approved by Owner-in writing. Work which could result in an accidental outage shall be performed with the Owner’s maintenance personnel advised of such work.

D. Service shall be maintained to existing areas during construction.

1.9 DRAWINGS

A. Mechanical drawings are diagrammatic and are not to be scaled for dimensions. Take all dimensions from Architectural drawings, certified equipment drawings, and from the structure itself before fabricating any work. Verify all space requirements, coordinating with other trades, and install the systems in the space provided without extra charges to the Owner.

B. Install all equipment in accordance with manufacturer's recommendations, unless approval is given in writing by the MECHANICAL ENGINEER for deviation.

1.10 EXAMINATION OF BIDDING DOCUMENTS

A. Each bidder shall examine the bidding documents carefully, and not later than seven days prior to the date of receipt of bids, shall make written request to the Architect for interpretation or correction of any discrepancies, ambiguity, inconsistency, or error therein which he may discover. Any interpretation or correction will be issued as an addendum by the Architect.

Only a written interpretation or correction by addendum shall be binding. No bidder shall rely upon interpretations or corrections given by any other method. If discrepancies, ambiguity, inconsistency, or error are not covered by addendum or written directive, Contractor shall include in his bid, labor materials and methods of construction resulting in higher cost. After award of contract, no allowance or extra compensation will be made on behalf of the Contractor due to his failure to make the written requests as described above.

B. The person submitting the request will be responsible for its prompt delivery. Failure to so request clarification of any inadequacy, omission, or conflict will not relieve the Contractor of responsibility. The signing of the Contract will be considered as implicitly denoting that the Contractor has a thorough comprehension of full intent and scope of the working drawings and specifications.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 4

1.11 ROUGH-IN

A. Verify final locations for rough-ins with field measurements and with the requirements of the actual equipment.

B. Refer to equipment specifications in other Divisions for additional rough-in requirements.

1.12 COORDINATION DRAWINGS

A. Prepare and submit a set of coordination drawings showing major elements, components, and systems of mechanical equipment and materials in relationship with other building components.

Prepare drawings to an accurate scale of ¼”=1”-0” or larger. Indicate the locations of all equipment and materials, including clearances for servicing and maintaining equipment.

Indicate movement and positioning of large equipment into the building during construction.

B. Prepare floor plans, reflected ceiling plans, elevations, sections, and details to conclusively coordinate where space is limited, and where sequencing and coordination of installations are of importance to the efficient flow of the Work, including (but not necessary limited) to the following:

1. Ductwork

2. Fire sprinkler piping

3. Electrical conduit

1.13 MECHANICAL INSTALLATIONS

A. Coordinate mechanical equipment and materials installation with other building components.

B. Verify all dimensions by field measurements.

C. Arrange for chases, slots, and openings in other building components to allow for mechanical installations.

D. Coordinate the installation of required supporting devices and sleeves to be set in poured in place concrete and other structural components, as they are constructed.

E. Sequence, coordinate, and integrate installations of mechanical materials and equipment for efficient flow of the Work. Give particular attention to large equipment requiring positioning prior to closing-in the building.

F. Coordinate the cutting and patching of building components to accommodate the installation of mechanical equipment and materials.

G. Where mounting heights are not detailed or dimensioned, install mechanical services and overhead equipment to provide the maximum headroom possible, and in accordance with minimum required clearances as specified in codes and regulations.

H. The word “concealed” as used in this specification refers to such spaces as pipe and duct chases, pipe and duct trenches, above plastered ceilings, in walls and buried where pipe and/or duct is inaccessible when building is complete. “Exposed” is intended to be within equipment rooms, unfinished areas, above “push up” ceilings, accessible pipe and duct tunnels.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 5

I. The term “furnish” means supply and deliver to Project, unless otherwise defined in greater detail. The term “install” is used to describe operations at Project, from inspecting and unloading, to completion in place, ready for intended use. The term “provide” means furnish and install, complete and ready for intended use, unless otherwise defined in greater detail.

1.14 SUBMITTALS

A. Submit under provisions of Division 1.

B. Proposed Product List: Include Products specified in Divisions 22 and 23 specifications.

C. Submit shop drawings and product data grouped to include complete submittals of related systems, Products, and accessories in a single submittal.

D. Mark dimensions and values in units to match those specified.

E. Submit miscellaneous items specified on the drawings, but not covered in the specifications.

Make no substitutions without prior approval from the Architect.

1.15 SHOP DRAWINGS

A. Submit shop drawings on all equipment, Temperature Controls and Fire Protection. Provide shop drawings to the Architect and Engineer showing locations of all access panels.

B. Shop drawings required for this project are as follows:

1. Insulation

2. Ductwork

C. Present shop drawing submittal data at one time, bound in three-ring binders, indexed in a neat and orderly manner. Partial submittals will not be accepted. Provide five sets of submittal data, unless noted otherwise in Division 1. Do not begin work until one (1) copy is returned.

D. Place orders for all equipment in time to prevent any delay in construction schedule or completion of project. If any materials or equipment are not ordered in time, additional charges made by equipment manufacturers to complete their equipment in time to meet construction schedule, together with any special handling charges, shall be borne by the Contractor.

E. Contractor agrees that shop drawing submittals processed by the engineer are not change orders. The purpose of shop drawing submittals by the Contractor is to demonstrate to the engineer that the Contractor understands the design concept, that he demonstrates his understanding by indicating which equipment and material he intends to furnish and install and by detailing the fabrication and installation methods he intends to use. Contractor further agrees that if deviations, discrepancies, or conflicts between shop drawing submittals and contract documents in the form of design drawings and specifications are discovered either prior to or after shop drawings and specifications shall control and shall be followed.

F. Contractor to provide manufacturers’ recommended installation manuals for equipment.

G. Review of shop drawings does not relieve this Contractor from the responsibility of furnishing equipment and materials of proper dimension, size, quantity, quality and all performance characteristics to efficiently perform the requirements and intent of the contract documents.

Review does not relieve this Contractor from responsibility for errors on the shop drawings. If the shop drawings deviate from the contract documents, advise the MECHANICAL ENGINEER

MECHANICAL GENERAL PROVISIONS 23 00 10 - 6

of the deviations in writing accompanying the shop drawings, including the reasons for the deviations. Coordinate all required changes with the other trades affected. If the changes are occasioned by the Contractor, he shall pay any costs involved.

1.16 PROJECT/SITE CONDITIONS

A. Install Work in locations shown on Drawings, unless prevented by Project conditions.

B. Prepare drawings showing proposed rearrangement of Work to meet Project conditions, including changes to Work specified in other sections. Obtain permission of Architect before proceeding.

1.17 PROJECT RECORD DRAWINGS

A. During the process of the work, maintain an accurate record of the installation of the mechanical systems. Upon completion of the mechanical systems installation, transfer all record data to blue-line prints of the original drawings. Drawings shall include all addendum items, charge orders, alternations, reroutings, etc. As a condition of acceptance of the project, deliver to the Architect one copy of the record drawings.

1.18 WARRANTY

A. All materials and equipment shall be new unless otherwise specified.

B. Guarantee all workmanship, materials and equipment and replace any found defective without cost to the Owner, for one year after final acceptance, as defined in General Conditions.

C. Each warranty for longer than the one year described above (that comes with equipment used on the job) shall be passed on to the owner with dates of start and end of the warranty.

PART 2 - PRODUCTS

2.1 SUBSTITUTIONS (PRIOR APPROVALS)

A. Bidder's Choice

1. Materials, equipment or services listed by several identifying names are intended to be bidder's choice, and any of the listed names may be bid without soliciting prior acceptance. Where more than one name is given in the specifications, the first named manufacturer's material, equipment or services is contemplated and any changes and their costs, required to accommodate the other named material or equipment as well as space requirements for the other named materials or equipment, must be assumed by the Contractor in his bid. (See Shop Drawing Requirement).

B. Performance Specification

1. When any product is specified only by requirement to meet an industry standard or regulating body standard (such as U.L., AGA, AWWA, ANSI, etc.) and the item proposed carries approval of that body, no prior acceptance by the MECHANICAL ENGINEER is needed.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 7

2. When any product or service is specified by requirement to meet a performance standard or is specified by a generic specification, (no manufacturers name listed) no prior acceptance by the MECHANICAL ENGINEER is needed except as specifically called for in these specifications.

C. Acceptance

1. Material and equipment specified is used as a basis of standard, and while not specifically mentioned, material gauges, weights, appearance and space requirements must be met by any substitutions.

2. Action for substitutions specified herein will be given only after the receipt of complete data showing performance over entire range, physical dimensions and material construction all SPECIFICALLY marked for the individual item. Letter of transmittal with at least one (1) copy and one (1) marked up copy of all descriptive data shall be submitted to the MECHANICAL ENGINEER'S Office.

3. Submit shop drawings for all materials and equipment other than the first named in theses specifications showing any changes required in piping, ducting, electrical wiring, space allocation etc. Be responsible to make all changes required to accommodate and to pay for these changes. Coordinate changes required with all other trades. Pay for all changes resulting from re-arranging equipment.

4. See General Conditions for method of notification of acceptance.

2.2 BID ALTERNATE(S)

A. Refer to Division 1 and all contract documents for additional information.

B. Alternate(s) for Material and Equipment

1. Equipment and material bid alternate(s) shall be proposed as additive or deductive alternate(s) to specified items by submitting it as a separate line item from the base bid on the Bidder's letterhead.

2. Such bid alternate proposals shall not be substituted or included in the base bid. Bid alternate proposal(s) must be accompanied by full descriptive data on the proposed equipment, together with a statement of the cost to be added or deducted for each item.

The bid alternate shall include all materials, equipment, labor, electrical connections, coordination with all other trades, etc. for a complete and operational system.

3. The Contractor shall submit the bid alternates at the time the base bids are due.

PART 3 - EXECUTION

3.1 STORAGE

A. Provide for proper storage of all materials and equipment and assume responsibility for losses due to any cause. All storage shall be within the contact limit lines of the building site. Cover and store all equipment and materials out of elements; any rusted or weather damaged item shall not be used.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 8

3.2 PRODUCT INSTALLATION

A. Manufacturer’s Instructions

1. Except where more stringent requirements are indicated, comply with the product manufacturer’s instructions and recommendations.

2. Consult with manufacturer’s technical representatives, who are recognized as technical experts, for specific instructions on special project conditions.

3. If a conflict exists, notify the Architect/Engineer in writing and obtain his instruction before proceeding with the work in question.

B. Movement of Equipment

1. Wherever possible, arrange for the movement and positioning of equipment so that enclosing partitions, walls and roofs will not be delayed or need to be removed.

2. Otherwise, advise Contractor of opening requirements to be maintained for the subsequent entry of equipment.

C. Clearances

1. Install piping and ductwork:

a. Straight and true.

b. Aligned with other work.

c. Close to walls and overhead structure (allowing for insulation).

d. Concealed, where possible, in occupied spaces.

e. Out-of-the-way with maximum passageway and headroom remaining in each space.

2. Except as otherwise indicated, arrange mechanical services and overhead equipment with a minimum of:

a. 7’0” headroom in storage spaces.

b. 8’6” headroom in other spaces.

3. Do not obstruct windows, doors or other openings.

4. Give the right-of way to piping systems required to slope for drainage (over other service lines and ductwork).

5. Offsets, transitions and changes in direction in pipes and ducts shall be made as required to maintain proper head room and pitch of sloping pipes whether or not indicated on the drawings. Furnish and install all traps, air vents, sanitary vents, etc., as required to affect these offsets, transitions and changes in direction.

3.3 PROTECTION OF WORK AND PROPERTY

A. Where there are existing facilities, be responsible for the protection thereof, whether or not such facility is to be removed or relocated. Moving or removing any facility must be done so as not to cause interruption of the work of Owner's operation.

B. Close all pipe and duct openings with caps or plugs during installation. Cover all fixtures and equipment and protect against injury. At the final completion, clean all work and deliver in an unblemished condition, or refinish and repaint at the discretion of the Architect.

MECHANICAL GENERAL PROVISIONS 23 00 10 - 9

C. Do not allow any fans in the HVAC system to operate before the area served by the fan has been cleaned and vacuumed of all debris and dust which might enter the system.

D. Any equipment, duct or piping systems found to have been damaged or contaminated above “MILL” or “SHOP” conditions shall be replaced or cleaned to the Engineer’s satisfaction.

3.4 ASBESTOS

A. The identification and/or abatement of asbestos hazards is not part of this contract.

1. If asbestos is encountered, contact Owner for instructions.

3.5 IDENTIFICATION

A. Refer to Section 230553 "Identification for HVAC Piping and Equipment" for pipe, duct, and equipment labeling and valve tagging and scheduling requirements.

B. Before final connections are made in the piping systems, blow out all piping with air and then wash out with cleaning compounds. Then flush the system to remove of all foreign materials.

Furnish all temporary connections, valves, etc, required for this purpose. Clean the boiler and chiller by the same procedure.

3.6 TESTING

A. Test all high velocity ductwork from supply fan to boxes before ducts are concealed and before boxes are connected. All openings shall be capped off and partial sections of the duct to be tested using a fan capable of building 8" S.P. Use U-gauge manometer to test S.P. Repair all audible and visible leaks using smoke in ducts.

B. All tests must be done to the satisfaction of the local authorities having jurisdiction, before covering.

C. Furnish all instruments required for testing.

3.7 PLACING IN OPERATION

A. Clean all ducts, pipes, equipment, controls etc., of plaster and other foreign debris.

B. Before final acceptance, clean or replace all strainers, oil or grease all bearings and clean out all drains. Clean and recoat all permanent filters, replace throwaway type filters with new filters.

END OF SECTION

BASIC MECHANICAL MATERIALS & METHODS 23 00 50 - 1

SECTION 23 00 50

BASIC MECHANICAL MATERIALS & METHODS

PART 1 - GENERAL

1.01 WORK INCLUDES

A. Work under this Section is subject to the requirements of the Contract Documents, including the Drawings, General and Supplementary Conditions, and Division 01 of the Specifications.

B. This Section, 23 00 50, applies to all other Division 23 sections.

1.02 SUMMARY

A. This Section includes the following topics:

1. Equipment Access and Installation.

2. Air System Filtration.

3. Sleeve Material.

4. Escutcheons.

5. Painting.

6. Wall, Roof, Floor Penetrations and Sleeve Installation.

1.03 EQUIPMENT ACCESS AND INSTALLATION

A. All motors, valves, fire and/or smoke dampers, motorized dampers, reheat coils, individual duct filters, control devices, etc., shall be so located and sized, by these contractors, to provide easy access for operation, repair and maintenance. Coordinate installation with other trades to allow for this access. Provide access doors to all motors, coils, fans, filters, motorized dampers, fire and smoke dampers.

B. All equipment items and systems shall be designed and installed to operate quietly and free of vibration. Starting and stopping of equipment during normal operation shall not generate any noticeable vibration.

C. Any rotating shafts, couplings, belt-drives, or other moving or hazardous portion of equipment and machinery shall be provided with detachable mounted guards.

D. All equipment shall be installed with sufficient unions to allow replacement, testing and servicing without having to disassemble large portions of piping.

1.04 AIR SYSTEM FILTRATION

Do not operate or permit any air system to be operated without filters.

When directed, during construction period, operate system with all filters in place.

Clean inside of ducts and equipment, perform all repairs with all filters in place.

After construction is finished, replace all filters with second set of clean filters.

BASIC MECHANICAL MATERIALS & METHODS 23 00 50 - 2

PART 2 - PRODUCTS

2.01 SLEEVE MATERIAL

A. Where pipes or ducts pass through interior, non-fire rated walls and suspended ceilings, provide clean cut holes, 1/2 inch larger than insulated pipe, duct, or bare pipe outside diameter; seal between pipe or duct and hole edge with acoustical caulk at the penetration; both sides.

Where pipe or duct penetrates a fire rated partition, seal around the penetration with a fire rated sealant; provide a U.L. approved firestop system.

2.02 PAINTING

A. All shop fabricated and factory built equipment not galvanized or protected by plating shall be cleansed and given one (1) shop coat of zinc-chromate primer before delivery or during construction.

B. Protect or mask nameplates, labels, tags, stainless steel, or chromium-plated items such as valve stems, motor shafts, levers, handles, trim strips which might be painted over.

C. No work shall be allowed to develop rust during the course of the work. Work showing evidence of rust or other corrosion shall be immediately scraped clean and rustprimed with an approved primer.

PART 3 - EXECUTION

3.01 WALL, ROOF, FLOOR PENETRATIONS AND SLEEVE INSTALLATION

A. Provide sleeves for piping as shown on drawings and as specified herein. Sleeves shall be of sufficient length to extend through the wall, roof or floors. Wall sleeves shall have ends flush with finished thickness of walls. Interior diameter of sleeves shall provide 1/2” clearance all around conduit; exception: fire protection sleeves shall meet the requirements of NFPA #13.

B. Sleeves installed in vertical positions shall be perfectly plumb and sleeves in horizontal positions shall be level. They shall be located, set, and maintained in position while surrounding construction work is being installed so that the center of each pipe shall be accurately installed in the center of the sleeve. The space between the pipe or the insulation and the sleeve shall be caulked to prevent light, sound or air transfer. Where vertical sleeves occur, such as in floors or ceilings, special collars secured to the pipes or to the ceiling construction shall be provided to prevent the packing from falling out. The standard floor and ceiling plates herein specified for finished areas may be used for this purpose provided they are firmly secured to the pipes. Where covering/insulation is provided, the covering/insulation shall extend continuous through sleeve.

3.02 PROTECTION OF WORK

A. Protect work from injury by keeping all piping capped and plugged or otherwise protected. This includes damage by freezing and/or stoppage from building materials, sand, dirt, or concrete.

B. Protect all equipment from damage during the project; provide all tarpaulins, drop cloths, barricades, or auxiliary equipment.

BASIC MECHANICAL MATERIALS & METHODS 23 00 50 - 3

3.03 SYSTEM CLEANING

A. Following the completion of system tests, all parts of installation shall be thoroughly cleaned and inspected by Contractor installing the system. All equipment, piping, valves, and fittings shall be cleaned of grease, metal cuttings and sludge which may have accumulated during installation or by operation of system for testing. Any stoppage, discoloration, operational damage or other damage to parts of building, its finish, or furnishing due to Contractor's failure to properly clean piping system shall be repaired by Contractor without cost to the Owner. At completion of work, the system shall be adjusted for proper operation.

B. Ductwork: Remove debris and trash from ductwork. Ductwork shall be manufactured, handled, transported and stored per SMACNA Duct Cleanliness for New Construction Guidelines - Advanced Level. See Ductwork Section for methods.

C. Make all adjustments to equipment and piping systems necessary to keep the systems in perfect operating condition for a period of one year from the date of final acceptance at no cost to the Owner.

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 1

SECTION 23 05 29

HANGERS AND SUPPORTS FOR HVAC

PART 1 - GENERAL

1.01 WORK INCLUDES

A. Base Bid:

1. Contractor provide:

a. Hangers and supports for ventilating systems.

1.02 RELATED SECTIONS

A. Section 23 Mechanical General Requirements

B. Section 23 HVAC Duct and Casings

C. Section 23 Air Duct Accessories

1.03 REFERENCES

A. American Society of Testing and Materials, ASTM:

1. ASTM A82: Cold Drawn Steel Wire for Concrete Reinforcement.

2. ASTM A185: Welded Steel Wire Fabric For Concrete Reinforcement.

3. ASTM C33: Concrete Aggregates.

4. ASTM C150: Portland Cement.

5. ASTM C171: Sheet Materials for Curing Concrete.

6. ASTM C260: Air-Entraining Admixtures for Concrete.

7. ASTM C309: Liquid Membrane Forming Compounds for Curing Concrete.

8. ASTM C404: Aggregates for Masonry Grout.

B. American National Standards Institute, ANSI:

1. ANSI B31, 1: Power Piping.

C. National Electrical Manufacturers Association, NEMA:

1. NEMA ML 1: Metal Framing (Continuous Slot Metal Channel Systems).

D. Sheet Metal & Air Conditioning Contractor's National Association, Inc., SMACNA:

1. Duct Hangers: SMACNA Duct Manuals.

E. Underwriter's Laboratories/Factory Mutual, UL/FM: Provide products UL listed and FM approved.

1.04 GENERAL

A. Hangers, structural supports, and attachments shall include all labor, supplemental steel or

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 2

other material necessary for support of pipe furnished by Contractor. Factory fabricated items shall be complete with nuts, bolts, washers, etc. Where type and size are not indicated, proper selection shall be determined by Contractor. Refer to Noise & Vibration Isolation section of this specification for special support and hanger requirements.

B. Refer to architectural and structural drawings for type of structure. Do NOT hang/support any single point loads greater than 500 lbs. from steel beams/purlins; and NOT greater than 250 lbs.

from concrete slab or steel bar joists; unless specifically noted otherwise on the structural drawings. Weights shall not exceed framing member allowance. Where this Contractor violates allowances, any and all resultant damage and costs to correct, as determined by the Architect/Engineer, will be borne by this Contractor.

C. Supports include equipment anchoring to floor slab, brackets to wall, hangers to equipment supported from structure above, etc. Refer to drawings for equipment and locations.

D. Submit, for approval, complete calculations and details for field fabricated support installations (e.g. trapeze hangers, equipment supports, etc) designed by a Registered Structural Engineer, with Engineers' Seal affixed thereto.

E. Supplemental steel spanning structural framing elements may be steel angles or channels specifically sized for equipment/pipe weight. Supports shall be sized with a minimum safety factor of 5 to 1, or as required by code; most stringent requirement shall apply. Contractor may provide supplemental supports as manufactured by Unistrut or B-Line systems.

F. Hangers and supports shall conform to recommendations of Standard Practice No. 58 and 69 of Manufacturer's Standardization Society of the Valve and Fitting Industry (MSS).

PART 2 - PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

A. Hangers and Supports:

1. ATO, Inc/Fee & Mason Mfg Co

2. Elcen Metal Products Co

3. ITT Grinnell Corp

4. PHD Mfg, Inc

5. Bang it.

6. Wood-Knocker

7. Drop-In Anchors

8. Saddles and Shields:

9. Elcen Metal Products Co

10. Fee & Mason Mfg Co

11. Pipe Shields, Inc

B. HANGER ROD ATTACHMENTS

1. Provide factory fabricated hanger rod attachments, in compliance with ANSI/MSS SP-58 and ANSI/MSS SP-69.

a. Use only one type by one manufacturer for each piping service.

b. Select Size of hanger rod attachments to suit hanger rods.

c. Provide copper plated hanger rod attachments for copper piping systems.

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 3

1) Type:

a) Steel Turnbuckles: MSS Type 13.

2.02 BUILDING ATTACHMENTS

A. Provide factory fabricated building attachments, in compliance with ANSI/MSS SP-58 and

ANSI/MSS SP-69.

1. Select size of building attachments to suit hanger rods.

2. Types:

a. Steel Brackets: One of following for indicated loading:

1) Light Duty: MSS Type 31.

2) Medium Duty: MSS Type 32.

3) Heavy Duty: MSS Type 33.

2.03 SADDLES AND SHIELDS

A. Provide saddles or shields under piping hangers and supports, factory fabricated, for all insulated piping.

1. Size saddles and shields for exact fit to mate with pipe insulation.

2. Types:

a. Protection Saddles: MSS Type 39; fill interior voids with segments of insulation matching adjoining insulation.

b. Protection Shields: MSS Type 40; length recommended by manufacturer to prevent crushing insulation.

c. Thermal Hanger Shields:

1) Constructed of 360 insert of high density, 100 psi waterproofed calcium silicate, encased in 360 sheet metal shield.

2) Provide assembly of same thickness as adjoining insulation.

2.04 DUCT HANGERS AND SUPPORTS

A. Strap Hangers: 18 gauge galvanized steel bands.

B. Angle Iron: Galvanized angle iron with 3/8-inch rods.

C. Wall Supports: Galvanized steel band iron or fabricated angle bracket.

D. Vertical Support at Floor: Rolled 1-1/4 inch x 3/16 inch angle.

E. Hangers: Support with stainless steel air-craft cable sized and rated for load, minimum size cable to be 7 x 9 - 3/32", with matching fastener rated for actual load installed with cable double looped on duct and at point of support. Acceptable products: Ductmate "Clutcher" or approved equal.

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 4

2.05 SLEEVES

A. UL Labeled Sleeves: Prefabricated with insulation and fireproofing.

B. Round Ducts: Galvanized steel.

C. Rectangular Ducts: Galvanized steel.

D. Sleeves through Fire and Smoke Walls: NFPA 90A.

E. Size sleeves to allow for expansion movement and to provide for continuous insulation.

F. Prefabricated Wall or Floor Penetration Seals: Modular mechanical type; interlocking synthetic rubber links filling annular space between pipe and wall opening.

1. Manufacturer:

a. Thunderline Corp: Link-Seal

b. Bolt and pressure plate fasteners and rubber seal provide watertight seal between pipe and wall.

c. Seal provides electrical insulation between pipe and wall.

d. Provide fire rated seals where required.

2.06 MISCELLANEOUS SUPPORT MATERIALS

A. Metal Framing: NEMA Standard ML 1.

B. Steel Plates, Shapes and Bars: ANSI/ASTM A6.

C. Hanger Rods: Steel; threaded both ends, threaded 1 end, or continuously threaded.

D. Cement Grout: Portland cement: ANSI/ASTM C150, Type I or Type III; clean uniformly grades, natural sand, ANSI/ASTM C404, Size No. 2; mix ration of 1.0 part cement to 3.0 parts sand, by volume, with minimum amount of water for placement and hydration.

E. Heavy Duty Steel Trapeze:

1. Fabricate from steel shapes selected for loads specified.

2. Weld steel in accordance with AWS standards.

3. Pipe Guides: Factory fabricated cast semi-steel or heavy fabricated steel, including bolted 2-section outer cylinder and base with 2-section guiding spider bolted tight to pipe.

a. Size guide and spiders to clear pipe, insulation, and cylinder.

b. Guides Length: Recommended by manufacturer to allow indicated travel.

PART 3 - EXECUTION

3.01 INSTALLATION PERFORMANCE

A. Comply with MSS SP-69 for installation of hangers, supports and anchors; install in accordance with manufacturer's recommendations.

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 5

1. Install all lines/hangers/supports to prevent sway, vibration or sag. Support piping at drops to equipment preventing stress at the equipment connections.

2. Locate a hanger within three feet of a direction change. Provide additional supports for heavy valves and equipment.

3. Adjust hangers/supports after insulation installation to provide uniform loading and to bring piping to proper levels and elevations.

4. Use bracket type hanger fastened to walls to support piping running adjacent to walls and not supported from ceilings. Valves 3 inches and over in horizontal lines shall be supported independent of the pipelines.

5. Perforated strap iron hangers or wire will NOT be accepted.

6. Hanger supports shall be securely fastened to structural members by beam clamps and clips, concrete inserts, anchors and all required accessories.

3.02 BUILDING ATTACHMENT INSTALLATION

A. Space attachments within maximum piping span indicated in MSS SP-69.

B. Install additional building attachments when supporting additional concentrated loads; including valves, flanges, guides, strainers, expansion joints and at changes in piping direction.

C. Anchors:

1. Install anchors at locations preventing stresses from exceeding ANSI B31; and preventing transfer of loading and stresses to connected equipment.

a. Install anchors at ends of principal pipe runs and at intermediate points in pipe runs between expansion loops and bends.

b. Preset anchors to accommodate both expansion and contraction of piping.

1) Fabricate and install anchor by welding steel shapes, plates and bars to piping and to structure; in compliance with ANSI B31 and AWS.

2) Anchors for Expansion Compensators: Install anchors in accordance with expansion unit manufacturer's recommendations.

a) Limit movement of piping and forces to maximums recommended by manufacturer for each unit.

3.03 DUCT HANGERS AND SUPPORTS INSTALLATION

A. Low Velocity Ducts:

1. Hanger Minimum Sizes:

a. Up to 30 inches wide: 1-1/4 inch x 3/16 inch angle at 10 feet spacing.

1) 31 inches to 48 inches wide: 1-1/2 inches x 3/16 inch angle at 10 feet spacing.

2) Over 48 inches wide: 1-1/2 inches x 3/16 inch angle at 8 feet spacing.

3) Horizontal Duct on Wall Supports Minimum Sizes:

a) Up to 18 inches wide: 1-1/2 inches x 16 gauge or 1 inch x 1 inch x 1/8 inch at 8 feet spacing.

b) 19 inches to 40 inches wide: 1-1/2 inches x 1-1/2 inches x 1/8 inch

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 6

at 4 feet spacing.

4) Vertical Duct on Wall Supports Minimum Sizes:

a) At 12 feet spacing.

b) Up to 24 inches wide: 1-1/4 inches x 3/16 inch angle.

c) 25 inches to 36 inches wide: 1-1/2 inch x 3/16 inch angle.

d) 37 inches to 48 inches wide: 1-1/2 inch x 1/4 inch angle.

5) Vertical Duct Floor Supports Minimum Sizes:

a) Riveted or screwed to duct.

b) Up to 60 inches wide: 1-1/2 inches x 3/16 inch angle.

c) Over 60 inches wide: 2 inches x 2 inches x 3/16 inch angle.

6) Covered Ducts: Install hangers below insulation with rod hangers.

7) Lined Ducts: Install hangers below duct; sheet metal duct not punctured.

8) Install hangers, supports to permit free, noiseless expansion and contraction.

B. Medium and High Velocity Ducts:

1. Rectangular Duct Hangers Minimum Sizes:

a. Up to 36 inches wide: 2 at 1 inch x 16 gauge at 10 feet spacing.

b. 37 inches to 60 inches wide: 2 at 1 inch x 16 gauge at 8 feet spacing and 2 inches x 2 inches x 1/4 inch trapeze.

c. 61 inches to 120 inches wide: 2 at 1-1/2 inches x 12 gauge at 8 feet spacing and

2 inches x 2 inches x 1/4 inch trapeze.

d. 121 inches to 240 inches wide: 3 at 3/8 inch diameter at 4 feet spacing and 2-1/2 inches x 2-1/2 inches x 3/16 inch trapeze.

2. Round Duct Hangers Minimum Sizes:

a. At 10 feet spacings.

b. Up to 18 diameter: 1 inch x 16 gauge.

c. 19 inches to 36 inches diameter: 1 inch x 12 gauge.

d. 37 inches to 50 inches diameter: 1-1/2 inches x 12 gauge.

e. 51 inches to 84 inches diameter: 2 at 1-1/2 inches x 12 gauge from girth reinforcing angle.

3. Vertical Duct Floor Supports Minimum Sizes:

a. Rivet to duct and tie angles together with rod, angles or cinch band.

b. Up to 48 inches wide: 1-1/2 inches x 1-1/2 inches x 1/8 inch.

c. Over 48 inches wide: 2 inches x 2 inches x 3/16 inch.

4. Angle reinforcing may be used for support omitting trapeze.

C. Round :

1. Use cable hangers in exposed areas.

2. Size and spacing per manufactures recommendations.

HANGERS AND SUPPORTS FOR HVAC 23 05 29 - 7

3.04 SLEEVES

A. Setting: Set sleeves in advance of concrete work; provide reinforcing around sleeves.

B. Wet Areas: Extend sleeves through potentially wet floors 2 inch above finished floor level.

1. Caulk sleeves full depth and provide floor plate.

C. Insulation: Where piping or ductwork passes through floor, ceiling or wall, close off space between pipe or duct and construction with noncombustible mineral wool insulation.

1. Provide tight fitting metal caps on both sides and caulk.

D. Install chrome plated escutcheons where piping passes through finished surfaces.

E. Prefabricated Wall Penetration Seals: Install and tighten seals in accordance with manufacturer's recommendations.

1. Ensure watertight pipe penetration.

3.05 ADJUSTING AND CLEANING

A. Adjust hangers and supports and place grout under supports to bring piping and ductwork to proper levels and elevations.

METAL DUCTS 23 31 13 - 1

SECTION 23 31 13

METAL DUCTS

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.02 SUMMARY

A. Section Includes:

1. Single-wall rectangular ducts and fittings.

2. Single-wall roundducts and fittings.

3. Sheet metal materials.

4. Sealants and gaskets.

5. Hangers and supports.

1.03 ACTION SUBMITTALS

A. Product Data: For each type of the following products:

1. Sealants and gaskets.

B. Shop Drawings:

1. Fabrication, assembly, and installation, including plans, elevations, sections, components, and attachments to other work.

2. Duct layout indicating sizes, configuration, liner material, and static-pressure classes.

3. Elevation of top of ducts.

4. Dimensions of main duct runs from building grid lines.

5. Fittings.

6. Reinforcement and spacing.

7. Seam and joint construction.

8. Penetrations through fire-rated and other partitions.

9. Equipment installation based on equipment being used on Project.

10. Locations for duct accessories, including dampers, turning vanes, and access doors and panels.

11. Hangers and supports, including methods for duct and building attachment, seismic restraints, and vibration isolation.

1.04 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Plans, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved:

METAL DUCTS 23 31 13 - 2

1. Duct installation in congested spaces, indicating coordination with general construction, building components, and other building services. Indicate proposed changes to duct layout.

2. Suspended ceiling components.

B. Field quality-control reports.

1.05 PERFORMANCE REQUIREMENTS

A. Ducts shall have minimum internal dimensions shown on the drawings. Whenever necessary to change the shape of the duct, it shall be done gradually and the full area retained in accordance with ASHRAE “Table of Equivalence Rectangular and Round Ducts.”

B. Ductwork, unless otherwise shown on the drawings, or specified herein, shall be G-90 galvanized steel sheets (F.S. QQ-S-775, Type 1, Class E) and joints shall be constructed so as not to trap condensed water.

C. Minimum construction standards for sound plenums, supply air plenums, return air plenums, outside air plenums, mixed air plenums shall be SMACNA design for four (4) inches water gauge. All remaining ductwork shall be per Schedule in 3.04B

D. Contractor may furnish equivalent round duct in lieu of rectangular ductwork shown on drawings; round pipe and fittings shall be as specified, maintaining friction rate equal to design.

Design ceiling heights, soffits, lighting layouts, piping layouts, etc. shall not be revised to facilitate round duct option unless approved by Architect. Contractor remains responsible for coordination with and/or revisions to work of other trades.

E. Where it is necessary that any portion of the duct system be built around pipes, conduits, beams, or other obstructions, provide air stream deflectors for smooth flow at Contractor's cost.

Maintain air stream velocity at the obstruction; if required, enlarge duct to maintain this velocity at Contractor's cost.

F. Mitered elbows shall be furnished with turning vanes, unless noted otherwise, consisting of single thickness vanes, constructed to prevent vibration and eliminate air noise.

1. Elbows with unequal dimensions in the plane of the turn shall have leading and trailing edges of vanes parallel to sides of duct.

2. Use radius throat elbows where shown or noted on the drawings; Contractor may elect to use radius throat elbows in lieu of square elbows with turning vanes as shown. Where indicated on the drawings the large radius throat elbows shall be provided with radius air turn vanes.

1.06 QUALITY ASSURANCE

A. NFPA Compliance:

1. NFPA 90A, "Instalation of Air Conditioning and Ventilating Systems."

2. NFPA 90B, "Installation of Warm Air Heating and Air Conditioning Systems."

METAL DUCTS 23 31 13 - 3

PART 2 - PRODUCTS

2.01 MATERIALS

A. Galvanized Steel for Ducts: Hot-dipped galvanized steel sheet, ASTM A 653/A 653M FS Type B, with G90/Z275 coating.

B. Exposed Ductwork shall be constructed with metal conforming to Paint Grip A-601.

C. Joint Sealers and Sealants: Non-hardening, water resistant, mildew and mold resistant.

2.02 SINGLE-WALL ROUND DUCTS AND FITTINGS

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Chapter 3, "Round, Oval, and Flexible Duct," based on indicated static-pressure class unless otherwise indicated.

B. Flat-Oval Ducts: Indicated dimensions are the duct width (major dimension) and diameter of the round sides connecting the flat portions of the duct (minor dimension).

C. Transverse Joints: Select joint types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-1, "Round Duct Transverse Joints," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

D. Longitudinal Seams: Select seam types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."

E. Tees and Laterals: Select types and fabricate according to SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-5, "90 Degree Tees and Laterals," and Figure 3-6, "Conical Tees," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."SEALANT AND GASKETS

A. General Sealant and Gasket Requirements: Surface-burning characteristics for sealants and gaskets shall be a maximum flame-spread index of 25 and a maximum smoke-developed index of 50 when tested according to UL 723; certified by an NRTL.

B. Water-Based Joint and Seam Sealant:

1. Application Method: Brush on.

2. Solids Content: Minimum 65 percent.

3. Shore A Hardness: Minimum 20.

4. Water resistant.

5. Mold and mildew resistant.

6. VOC: Maximum 75 g/L (less water).

7. Maximum Static-Pressure Class: 10-inch wg, positive and negative.

8. Service: Indoor or outdoor.

METAL DUCTS 23 31 13 - 4

9. Substrate: Compatible with galvanized sheet steel (both PVC coated and bare), stainless steel, or aluminum sheets.

C. Flanged Joint Sealant: Comply with ASTM C 920.

1. General: Single-component, acid-curing, silicone, elastomeric.

2. Type: S.

3. Grade: NS.

4. Class: 25.

5. Use: O.

D. Flange Gaskets: Butyl rubber, neoprene, or EPDM polymer with polyisobutylene plasticizer.

2.04 HANGERS AND SUPPORTS

A. See Division 23 Section - Hangers and Supports

2.05 DUST COLLECTION DUCTS AND FITTINGS

A. 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:

1. KB Duct

2. Donaldson Torit, Easy Duct.

3. Nordfab, Quick-Fit

a. Fabrication Requirements: All ductwork shall be of a clamp-together design using a die-formed, rolled edge in which is then joined together by a single lever clamp of similar material. All clamp together ducting shall be of continuous laser welded construction along the longitudinal seam of the rolled form duct with the exception of the 3” which is lock formed. All connections shall have nitrile seal in clamp for standard installs. Duct material sheet blanks are five feet long, which is then rolled a fused together with a laser weld process along the longitudinal seam. The ends of the duct are then pressed in a die to form a rolled bead on each end of the duct.