DNC-810CM3030-Bid Docs SPECS_Vol II.pdf

NCA MASTER SPECIFICATIONS

BID DOCUMENTS

VOLUME II

DAYTON NATIONAL CEMETERY

MONTGOMERY COUNTY, OHIO

PROJECT NO. 810CM3030

PIC/ADMIN BLDG, REPLACE COMMITTAL

SHELTER B, AND ROAD REPAIRS

Prepared for:

United States Department of Veterans Affairs

July 28, 2023

DAYTON NATIONAL CEMETERY PROJECT NO. 810CM3030

PIC/ADMIN BLDG, REPLACE COMMITTAL JULY 28, 2023

SHELTER B, AND ROAD REPAIRS

BID DOCUMENTS

00 01 10-1

DEPARTMENT OF VETERANS AFFAIRS

NCA MASTER SPECIFICATIONS

VOLUME II

TABLE OF CONTENTS

Section 00 01 10

DIVISION 23 – HEATING, VENTILATING, AND AIR CONDITIONING

(HVAC)

23 05 12 General Motor Requirements for HVAC Equipment 11-16 23 05 41 Noise and Vibration Control for HVAC Piping and Equipment 11-16 23 05 93 Testing, Adjusting, and Balancing for HVAC 11-16 23 07 11 HVAC Insulation 11-16 23 08 00 Commissioning of HVAC Systems 12-15 23 09 23 Direct-Digital Control System for HVAC 11-16 23 23 00 Refrigerant Piping 11-16 23 31 00 HVAC Ducts and Casings 11-16 23 34 00 HVAC Fans 11-16 23 37 00 Air Outlets and Inlets 11-16 23 81 00 Decentralized Unitary HVAC Equipment 11-16

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 07-17 26 05 19 Low-Voltage Electrical Power Conductors and Cables 07-17 26 05 26 Grounding and Bonding for Electrical Systems 07-17 26 05 33 Raceway and Boxes for Electrical Systems 07-17 26 05 41 Underground Electrical Construction 07-17 26 09 23 Lighting Controls 26 24 16 Panelboards 07-17 26 27 26 Wiring Devices 07-17 26 29 21 Enclosed Switches and Circuit Breakers 07-17 26 51 00 Interior Lighting 07-17 26 56 00 Exterior Lighting 07-17

DIVISION 27 – COMMUNICATIONS

27 05 00 Common Work Results for Communications 11-16 27 05 26 Grounding and Bonding for Communications Systems 11-16 27 05 33 Raceways and Boxes for Communications Systems 11-16 27 10 00 Structured Cabling 11-16 27 11 00 Communications Equipment Room Fittings 11-16

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 10 00 Access Control 03-18 28 13 00 Physical Access Control System 10-11 28 20 00 Video Surveillance 03-18 28 31 00 Intrusion Detection 03-18

SHELTER B, AND ROAD REPAIRS

BID DOCUMENTS

00 01 10-2

28 46 00 Fire Detection and Alarm 11-16

DIVISION 31 – EARTHWORK

31 20 00 Earth Moving 11-16

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 05 23 Cement and Concrete for Exterior Improvements 11-16 32 12 16 Asphalt Paving 11-16 32 17 23 Pavement Markings 11-16 32 31 19 Decorative Metal Fences and Gates 11-16 32 33 00 Site Furnishings 01-17 32 90 00 Planting 11-16

DIVISION 33 – UTILITIES

33 10 00 Water Utilities 11-16 33 30 00 Sanitary Sewerage Utilities 11-16 33 40 00 Storm Sewer Utilities 11-16

APPENDIX

“Geotechnical Engineering Report, Proposed Renovations for Dayton National Cemetery” by ECS Midwest, LLC

09-22

“Geotechnical Engineering Report, Proposed Maintenance Annex Building, Proposed Renovations for Dayton National Cemetery” by ECS Midwest, LLC

04-23

SHELTER B, AND ROAD REPAIRS

GENERAL MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

23 05 12 - 1

SECTION 23 05 12

GENERAL MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies the furnishing, installation and connection of motors for HVAC equipment.

B. A complete listing of common acronyms and abbreviations are included in

Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

1.2 RELATED WORK

A. Section 01 00 02, GENERAL REQUIREMENTS (Minor NCA Projects).

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 42 19, REFERENCE STANDARDS.

D. Section 01 81 13, SUSTAINABLE DESIGN REQUIREMENTS.

E. Section 01 91 00, GENERAL COMMISSIONING REQUIREMENTS.

F. Section 23 05 11, COMMON WORK RESULTS FOR HVAC: General mechanical requirements and items which are common to more than one section of

Division 23.

G. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

H. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requirements that are common to more than one Section of

Division 26.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. National Electrical Manufacturers Association (NEMA):

MG 1-2016(R2018)........Motors and Generators

MG 2-2014...............Safety Standard for Construction and Guide for

Selection, Installation and Use of Electric

Motors and Generators

C. National Fire Protection Association (NFPA):

70-2020.................National Electrical Code (NEC)

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

23 05 12 - 2

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 23 05 12, GENERAL MOTOR REQUIREMENTS FOR HVAC

EQUIPMENT”, with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

D. Shop Drawings:

1. Include clearly presented information that is sufficient to demonstrate compliance with contract documents.

2. Include electrical ratings, dimensions, mounting details, materials, horsepower, RPM, enclosure, starting characteristics, torque characteristics, code letter, full load and locked rotor current, service factor, and lubrication method.

E. Complete operating and maintenance manuals including wiring diagrams, technical data sheets, information for ordering replacement parts, and troubleshooting guide:

1. Include complete list indicating all components of the systems.

2. Include complete diagrams of the internal wiring for each item of equipment.

3. Diagrams shall have their terminals identified to facilitate installation, operation and maintenance.

F. Certification: Two weeks prior to final inspection, unless otherwise noted, submit to the COR 4 copies of certification that the motors have been properly applied, installed, adjusted, lubricated, and tested.

G. Completed System Readiness Checklist provided by the Commissioning

Agent and completed by the contractor, signed by a qualified technician and dated on the date of completion, in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

H. Submit training plans and instructor qualifications in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

1.5 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to include submittal review comments, substitutions and construction revisions shall be in electronic version on CD or DVD. All aspects of system operation and

23 05 12 - 3 maintenance procedures, including applicable piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations. Notes on all special systems or devices shall be included.

A List of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining any special knowledge or tools the owner will be required to employ shall be inserted into the As-Built documentation.

C. The installing contractor shall maintain as-built drawings of each completed phase for verification; and, shall provide the complete set at the time of final systems certification testing. As-built drawings are to be provided, and a copy of them in Auto-CAD version 2013_ provided on CD or DVD. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ requirement.

D. Certification documentation shall be provided to COR 10 working days prior to submitting the request for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and certification that all results of tests were within limits specified.

PART 2 - PRODUCTS

2.1 MOTORS

A. For alternating current, fractional and integral horsepower motors, NEMA MG 1 and NEMA MG 2 shall apply.

B. All material and equipment furnished and installation methods shall conform to the requirements of Section 26 05 21, LOW-VOLTAGE ELECTRICAL

POWER CONDUCTORS AND CABLES (600 Volts and Below). Provide all electrical wiring, conduit, and devices necessary for the proper connection, protection, and operation of the systems. Provide premium efficiency type motors as scheduled. Unless otherwise specified for a particular application, use electric motors with the following requirements.

23 05 12 - 4

C. Single-phase Motors: Motors for centrifugal fans and pumps may be split phase or permanent split capacitor (PSC) type. Provide capacitor-start type for hard starting applications.

1. Contractor’s Option – Electrically Commutated motor (EC Type): Motor shall be brushless DC type specifically designed for applications, with heavy duty ball bearings and electronic commutation. The motor shall be speed controllable down to 20 percent of full speed and shall be at least 85 percent efficient at all speeds.

D. Poly-phase Motors: NEMA Design B, Squirrel cage, induction type.

1. Two Speed Motors: Each two-speed motor shall have two separate windings. Provide a time-delay (20 seconds minimum) relay for switching from high to low speed.

E. Voltage ratings shall be as follows:

1. Single phase:

a. Motors connected to 120-volt systems: 115 volts.

b. Motors connected to 208-volt systems: 200 volts.

c. Motors connected to 240 volt or 480 volt systems: 230/460 volts, dual connection.

2. Three phase:

a. Motors connected to 208-volt systems: 200 volts.

b. Motors, less than 74.6 kW (100 HP), connected to 240 volt or 480 volt systems: 230/460 volts, dual connection.

F. Number of phases shall be as follows:

1. Motors, less than 373 W (1/2 HP): Single phase.

2. Motors, 373 W (1/2 HP) and greater: 3 phase.

3. Exceptions:

a. Hermetically sealed motors.

b. Motors for equipment assemblies, less than 746 W (1 HP), may be single phase provided the manufacturer of the proposed assemblies cannot supply the assemblies with three phase motors.

G. Horsepower ratings shall be adequate for operating the connected loads continuously in the prevailing ambient temperatures in areas where the motors are installed, without exceeding the NEMA standard temperature rises for the motor insulation.

H. Motor designs, as indicated by the NEMA code letters, shall be coordinated with the connected loads to assure adequate starting and running torque.

23 05 12 - 5

I. Motor Enclosures:

1. Shall be the NEMA types shown on the drawings for the motors.

2. Where the types of motor enclosures are not shown on the drawings, shall be the NEMA types, which are most suitable for the environmental conditions where the motors are being installed.

3. Shall be primed and finish coated at the factory with manufacturer's prime coat and standard finish.

J. Additional requirements for specific motors, as indicated in other sections, shall also apply.

K. Energy-Efficient Motors (Motor Efficiencies): All permanently wired polyphase motors of 746 Watts (1 HP) or more shall meet the full-load efficiencies as indicated in table MG 12-12, reproduced in part below, and as specified in this specification. Motors of 746 Watts (1 HP) or more with open, drip-proof or totally enclosed fan-cooled enclosures shall be NEMA premium efficiency type, unless otherwise indicated.

Motors provided as an integral part of motor driven equipment are excluded from this requirement if a minimum seasonal or overall efficiency requirement is indicated for that equipment by the provisions of another section.

Nominal Efficiencies

Open Drip-Proof

Nominal Efficiencies

Totally Enclosed Fan-Cooled

Rating kW (HP)

RPM

RPM

3600 RPM Rating kW (HP)

RPM

RPM

RPM

0.746 (1) 82.5% 85.5% 77.0% 0.746 (1) 82.5% 85.5% 77.0%

1.12 (1.5) 86.5% 86.5% 84.0% 1.12 (1.5) 87.5% 86.5% 84.0%

1.49 (2) 87.5% 86.5% 85.5% 1.49 (2) 88.5% 86.5% 85.5%

2.24 (3) 88.5% 89.5% 85.5% 2.24 (3) 89.5% 89.5% 86.5%

3.73 (5) 89.5% 89.5% 86.5% 3.73 (5) 89.5% 89.5% 88.5%

5.60 (7.5) 90.2% 91.0% 88.5% 5.60 (7.5) 91.0% 91.7% 89.5%

7.46 (10) 91.7% 91.7% 89.5% 7.46 (10) 91.0% 91.7% 90.2%

11.2 (15) 91.7% 93.0% 90.2% 11.2 (15) 91.7% 92.4% 91.0%

14.9 (20) 92.4% 93.0% 91.0% 14.9 (20) 91.7% 93.0% 91.0%

18.7 (25) 93.0% 93.6% 91.7% 18.7 (25) 93.0% 93.6% 91.7%

22.4 (30) 93.6% 94.1% 91.7% 22.4 (30) 93.0% 93.6% 91.7%

29.8 (40) 94.1% 94.1% 92.4% 29.8 (40) 94.1% 94.1% 92.4%

23 05 12 - 6

L. Minimum Power Factor at Full Load and Rated Voltage: 90 percent at 1200

RPM, 1800 RPM and 3600 RPM.

M. Premium efficiency motors shall be used where energy cost/kW x (hours use/year) > 50.

PART 3 - EXECUTION

3.1 INSTALLATION

A. If an installation is unsatisfactory to the COR, the Contractor shall correct the installation at no additional cost or time to the

Government.

B. Install motors in accordance with manufacturer’s recommendations, the

NEC, NEMA, as shown on the drawings, and as required by other sections of these specifications.

3.2 STARTUP AND TESTING

A. Megger all motors after installation, before start-up. All motors shall test free from grounds.

B. Make tests as recommended by product manufacturer and listed standards and under actual or simulated operating conditions and prove full compliance with design and specified requirements. Tests of the various items of equipment shall be performed simultaneously with the system of which each item is an integral part.

C. When any defects are detected, correct defects and repeat test at no additional cost or time to the Government.

D. The Commissioning Agent will observe startup and contractor testing of selected equipment. Coordinate the startup and contractor testing schedules with the COR and Commissioning Agent. Provide a minimum notice of 10 working days prior to startup and testing.

3.3 COMMISSIONING

A. Provide commissioning documentation in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

B. Components provided under this section of the specification will be tested as part of a larger system.

3.4 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s technical representative for four hours to instruct each VA personnel responsible in the operation and maintenance of units.

23 05 12 - 7

B. Submit training plans and instructor qualifications in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

---END---

23 05 12 - 8

THIS PAGE LEFT BLANK INTENTIONALLY

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

23 05 41 - 1

SECTION 23 05 41

PART 1 - GENERAL

1.1 DESCRIPTION

A. Noise criteria, vibration tolerance, and vibration isolation for HVAC work.

B. A complete listing of common acronyms and abbreviations are included in

Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

1.2 RELATED WORK

A. Section 01 00 02, GENERAL REQUIREMENTS (Minor NCA Projects).

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 42 19, REFERENCE STANDARDS.

D. Section 01 81 13, SUSTAINABLE DESIGN REQUIREMENTS.

E. Section 01 91 00, GENERAL COMMISSIONING REQUIREMENTS.

F. Section 03 30 53, (Short-Form) CAST-IN-PLACE CONCRETE: Requirements for concrete inertia bases.

G. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

H. Section 23 05 93, TESTING, ADJUSTING, AND BALANCING FOR HVAC:

requirements for sound and vibration tests.

I. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

J. Section 23 31 00, HVAC DUCTS AND CASINGS.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society of Heating, Refrigerating and Air-Conditioning

Engineers, Inc. (ASHRAE):

Latest Edition..........ASHRAE Handbook-HVAC Applications, Noise and

Vibration Control Chapter

C. American Society for Testing and Materials (ASTM):

A123/A123M-2021.........Standard Specification for Zinc (Hot-Dip

Galvanized) Coatings on Iron and Steel Products

A307-2021...............Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60,000 PSI Tensile

Strength

23 05 41 - 2

D2240-15e1 (R2021)......Standard Test Method for Rubber Property -

Durometer Hardness

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC

PIPING AND EQUIPMENT”, with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Vibration isolators:

a. Floor mountings

b. Hangers

c. Snubbers

d. Thrust restraints

2. Bases.

3. Acoustical enclosures.

D. Furnish load calculations from manufacturer for selected isolators, including supplemental bases, based on lowest operating speed of equipment supported.

E. Complete operating and maintenance manuals including wiring diagrams, technical data sheets, information for ordering replacement parts, and troubleshooting guide:

1. Include complete list indicating all components of the systems.

2. Include complete diagrams of the internal wiring for each item of equipment.

3. Diagrams shall have their terminals identified to facilitate installation, operation and maintenance.

F. Completed System Readiness Checklist provided by the Commissioning

Agent and completed by the contractor, signed by a qualified technician and dated on the date of completion, in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

G. Submit training plans and instructor qualifications in accordance with

23 05 41 - 3

1.5 QUALITY ASSURANCE

A. Refer to paragraph QUALITY ASSURANCE in Section 23 05 11, COMMON WORK

RESULTS FOR HVAC.

B. Noise Criteria:

1. Do not exceed the NC levels listed below for noise levels in all 8 octave bands due to equipment and duct systems:

Type of Room NC LEVEL

Bathrooms and Toilet Rooms 30

Chapels 25

Conference Rooms 30

Corridors(Public) 40

Lobbies, Waiting Areas 40

Locker Rooms 50

Offices, large open (3 or more occupants)

Offices, small private (2 or fewer occupants)

Maintenance 50

2. For equipment which has no sound power ratings scheduled on the plans, select equipment such that the foregoing noise criteria, local ordinance noise levels, and OSHA requirements are not exceeded. Use selection procedure in accordance with ASHRAE

Handbook-HVAC Applications, Noise and Vibration Control Chapter.

3. An allowance, not to exceed 5db, may be added to the measured value to compensate for the variation of the room attenuating effect between room test condition prior to occupancy and design condition after occupancy which may include the addition of sound absorbing material, such as, furniture. This allowance may not be taken after occupancy.

4. In absence of specified measurement requirements, measure equipment noise levels 3 feet from equipment, and at an elevation of maximum noise generation.

C. See Section 23 05 93, TESTING, ADJUSTING, AND BALANCING FOR HVAC for requirements for sound and vibration tests.

D. Allowable Vibration Tolerances for Rotating, Non-reciprocating

Equipment: Not to exceed a self-excited vibration maximum velocity of 5

23 05 41 - 4 mm per second (3/16 inch per second) RMS, filter in, when measured with a vibration meter on bearing caps of machine in vertical, horizontal, and axial directions, or measured at equipment mounting feet if bearings are concealed. Measurements for internally isolated fans and motors may be made at the mounting feet.

1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated to include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to include submittal review comments, substitutions and construction revisions shall be in electronic version on CD or DVD inserted into a three ring binder. All aspects of system operation and maintenance procedures, including applicable piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and sequence of operation shall be included in the operation and maintenance manual.

The operations and maintenance manual shall include troubleshooting techniques and procedures for emergency situations. Notes on all special systems or devices shall be included. A List of recommended spare parts (manufacturer, model number, and quantity) shall be furnished. Information explaining any special knowledge or tools the owner will be required to employ shall be inserted into the As-Built documentation.

C. The installing contractor shall maintain as-built drawings of each completed phase for verification; and, shall provide the complete set at the time of final systems certification testing. As-built drawings are to be provided, and a copy of them in Auto-CAD version 2013 provided on CD or DVD. Should the installing contractor engage the testing company to provide as-built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ requirement.

D. Certification documentation shall be provided to COR 10 working days prior to submitting the request for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and certification that all results of tests were within limits specified.

23 05 41 - 5

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS

A. Ensure the type of isolator, base, and minimum static deflection meet the requirements of each specific equipment application as recommended by isolator or equipment manufacturer but subject to minimum requirements indicated herein and in the schedule on the drawings.

B. Ensure elastomeric isolators comply with ASTM D2240 and be oil resistant neoprene, with a maximum stiffness of 60 durometer, and have a straight-line deflection curve.

C. Uniform Loading: Select and locate isolators to produce uniform loading and deflection even if equipment weight is not evenly distributed.

D. Color code isolators by type and size for easy identification of capacity.

2.2 SEISMIC RESTRAINT REQUIREMENTS FOR EQUIPMENT -NOT USED

2.3 VIBRATION ISOLATORS

A. Floor Mountings:

1. Double Deflection Neoprene (Type N): Includes neoprene covered steel support plated (top and bottom), friction pads, and necessary bolt holes.

2. Spring Isolators (Type S): Free-standing, laterally stable, including acoustical friction pads and leveling bolts. Ensure isolators have a minimum ratio of spring diameter-to-operating spring height of 1.0 and an additional travel to solid equal to 50 percent of rated deflection.

3. Captive Spring Mount for Seismic Restraint (Type SS):

a. Design mounts to resiliently resist seismic forces in all directions. Ensure snubbing to take place in all modes with adjustment to limit upward, downward, and horizontal travel to a maximum of 6 mm (1/4 inch) before contacting snubbers. Ensure mountings have a minimum rating as to be able to withstand the force associated with 1 g of acceleration as calculated and certified by a registered structural engineer.

b. Ensure all mountings have leveling bolts rigidly bolted to the equipment. Ensure spring diameters be no less than 0.8 of the compressed height of the spring at rated load. Ensure springs have a minimum additional travel to solid equal to 50 percent of the rated deflection. Ensure mountings have ports for spring

23 05 41 - 6 inspection. Provide an all directional neoprene cushion collar around the equipment bolt.

4. Spring Isolators with Vertical Limit Stops (Type SP): Similar to spring isolators noted above, except include a vertical limit stop to limit upward travel if weight is removed and also to reduce movement and spring extension due to wind loads. Provide clearance around restraining bolts as to prevent mechanical short circuiting.

Ensure isolators have a minimum seismic rating as to withstand spectral acceleration of 1 g.

5. Pads (Type D), Washers (Type W), and Bushings (Type L): Ensure pads are made of felt, cork, neoprene waffle, neoprene and cork sandwich, neoprene and fiberglass, neoprene and steel waffle, or reinforced duck and neoprene. Ensure washers and bushings are made of reinforced duck and neoprene. Size pads for a maximum load of 345 kPa (50 psig).

B. Hangers: Combination neoprene and springs unless otherwise noted and allow for expansion of pipe.

1. Combination Neoprene and Spring (Type H): Ensure vibration hangers contain a spring and double deflection neoprene element in series.

Ensure springs have a diameter of not less than 0.8 of compressed operating spring height. Ensure springs have a minimum additional travel of 50 percent between design height and solid height. Ensure springs permit a 15-degree angular misalignment without rubbing on hanger box.

2. Ensure hanger supports for piping 50 mm (2 inches) and larger have a pointer and scale deflection indicator.

C. Snubbers: Ensure each spring mounted base has a minimum of 4 all-directional or 8 two-directional (2 per side) seismic snubbers that are double acting. Ensure elastomeric materials are shock absorbent neoprene bridge quality bearing pads, maximum 60 durometer, replaceable, and have a minimum thickness of 6 mm (1/4 inch). Ensure air gap between hard and resilient material be not less than 3.2 mm

(1/8 inch) nor more than 6 mm (1/4 inch). Ensure restraints are capable of withstanding design load without permanent deformation.

2.4 BASES

A. Rails (Type R): Design rails with isolator brackets to reduce mounting height of equipment and cradle machines having legs or bases that do

23 05 41 - 7 not require a complete supplementary base. To assure adequate stiffness, ensure height of members are a minimum of 1/12 of longest base dimension, but not less than 100 mm (4 inches). Where rails are used with neoprene mounts for small fans or close coupled pumps, extend rails to compensate overhang of housing.

B. Inertia Base (Type I): Ensure base to be a reinforced concrete inertia base. Pour concrete into a welded steel channel frame, incorporating pre-located equipment anchor bolts and pipe sleeves. Level the concrete to provide a smooth uniform bearing surface for equipment mounting.

Provide grout under uneven supports. Ensure channel depth be a minimum of 1/12 of longest dimension of base but not less than 150 mm (6 inches). Ensure form to include 15 mm (1/2 inch) reinforcing bars welded in place, minimum of 200 mm (8 inch) on center, running both ways in a layer 40 mm (1-1/2 inches) above bottom. Use height saving brackets in all mounting locations. Ensure weight of inertia base be equal to or greater than weight of equipment supported to provide a maximum peak-to-peak displacement of 2 mm (1/16 inch).

C. Curb Mounted Isolation Base (Type CB): Fabricate from aluminum to fit on top of standard curb, with overlap to allow water run-off, and having wind and water seals which do not interfere with spring action.

Provide resilient snubbers with 6 mm (1/4 inch) clearance for wind resistance. Ensure top and bottom bearing surfaces have sponge type weather seals. Ensure integral spring isolators comply with Spring

Isolator (Type S) requirements.

2.5 SOUND ATTENUATING UNITS

A. Refer to specification Section 23 31 00, HVAC DUCTS AND CASINGS.

PART 3 - EXECUTION

3.1 INSTALLATION

A. If an installation is unsatisfactory to the COR, the Contractor shall correct the installation at no additional cost or time to the

Government.

B. Vibration Isolation:

1. No metal-to-metal contact will be permitted between fixed and floating parts.

2. Connections to Equipment: Allow for deflections equal to or greater than equipment deflections. Ensure electrical, drain, piping connections, and other items made to rotating or reciprocating

23 05 41 - 8 equipment (pumps, compressors, etc.), which rests on vibration isolators, be isolated from building structure for first 3 hangers or supports.

3. Common Foundation: Mount each electric motor on same foundation as driven machine. Hold driving motor and driven machine in positive rigid alignment with provision for adjusting motor alignment and belt tension. Ensure bases are level throughout length and width.

Provide shims to facilitate pipe connections, leveling, and bolting.

4. Provide heat shields where elastomers are subject to temperatures over 38 degrees C (l00 degrees F).

5. Extend bases for pipe elbow supports at discharge and suction connections at pumps. Ensure pipe elbow supports do not short-circuit pump vibration to structure.

6. Ensure non-rotating equipment, such as heat exchangers and convertors, are mounted on isolation units having the same static deflection as the connected piping support system.

C. Inspection and Adjustments: Check for vibration and noise transmission through connections, piping, ductwork, foundations, and walls. Adjust, repair, or replace isolators as required to reduce vibration and noise transmissions to specified levels.

3.2 ADJUSTING

A. Adjust vibration isolators after piping systems are filled and equipment is at operating weight.

B. Adjust limit stops on restrained spring isolators to mount equipment at normal operating height. After equipment installation is complete, adjust limit stops so they are out of contact during normal operation and at shutdown state.

C. Attach thrust limits at centerline of thrust, and adjust to a maximum of 6 mm (1/4 inch) movement during start and stop.

D. Adjust active height of spring isolators.

E. Adjust snubbers according to manufacturer's recommendations.

F. Adjust seismic restraints to permit free movement of equipment within normal mode of operation.

G. Torque anchor bolts according to equipment manufacturer's recommendations to resist seismic forces.

23 05 41 - 9

3.3 STARTUP AND TESTING

A. Make tests as recommended by product manufacturer and listed standards and under actual or simulated operating conditions and prove full compliance with design and specified requirements. Tests of the various items of equipment shall be performed simultaneously with the system of which each item is an integral part.

B. When any defects are detected, correct defects and repeat test at no additional cost or time to the Government.

C. The Commissioning Agent will observe startup and contractor testing of selected equipment. Coordinate the startup and contractor testing schedules with the COR and Commissioning Agent. Provide a minimum notice of 10 working days prior to startup and testing.

3.4 COMMISSIONING

A. Provide commissioning documentation in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

B. Components provided under this section of the specification will be tested as part of a larger system.

3.5 DEMONSTRATION AND TRAINING

A. Provide services of manufacturer’s technical representative for four hours to instruct each VA personnel responsible in the operation and maintenance of units.

B. Submit training plans and instructor qualifications in accordance with

T-1

SELECTION GUIDE FOR VIBRATION ISOLATORS

EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

REFRIGERATION MACHINES

PACKAGED --- D 0.25 --- SP 1.5 --- SP 1.5 --- SP 2.5 R SP 2.5

COMPRESSORS

UP THROUGH 1-1/2

HP

--- D,L, W

0.25 --- SS 0.8 --- SS 1.5 --- SS 1.5 CB SS 1.5

2 HP AND OVER:

500 - 750 RPM --- D 0.25 --- SS 0.8 --- SS 1.5 --- SS 1.5 CB SS 1.5

750 RPM & OVER --- D 0.25 --- SS 0.8 --- SS 1.5 --- SS 1.5 CB SS 1.5

PUMPS

BASE

MOUNTED

UP TO

10 HP

I S 0.75 I S 0.75 I S 1.5 I S 1.5 I S 1.5

15 HP

THRU 40

HP

I S 0.75 I S 0.75 I S 1.5 I S 1.5 I S 1.5

IN-LINE UP TO

25 HP

--- S 0.75 --- S 1.5 --- S 1.5 --- S 1.5 --- S 1.5

ROOF VENTILTORS

ABOVE OCCUPIED AREAS:

UP TO 22” DIAMETER --- --- --- --- S 0.75 --- S 0.75 CB S 0.75 CB S 0.75

AIR HANDLING UNIT PACKAGES

SUSPENDED:

UP THRU 10 HP --- S 0.75 --- H 0.75 --- H 0.75 --- H 0.75 --- H 0.75

T-2

EQUIPMENT ON GRADE 20FT FLOOR SPAN 30FT FLOOR SPAN 40FT FLOOR SPAN 50FT FLOOR SPAN

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

BASE

TYPE

ISOL

TYPE

MIN

DEFL

15 HP & OVER:

UP TO 300 RPM --- --- --- --- H 3.5 --- H 3.5 --- H 3.5 --- H 3.5

301 RPM & OVER --- --- --- --- H 2.5 --- H 2.5 --- H 2.5 --- H 2.5

FLOOR MOUNTED:

UP THRU 5 HP --- S 0.75 --- S 3.5 --- S 3.5 --- S 3.5 --- S 3.5

7-1/2 HP & OVER:

UP TO 300 RPM --- S 0.75 --- S 3.5 --- S 3.5 CB S 3.5 CB S 3.5

301 RPM & OVER --- S 0.75 --- S 2.5 --- S 2.5 CB S 2.5 CB S 2.5

NOTES:

1. Edit the Table above to suit where isolator, other than those shown, are used, such as for seismic restraints and position limit stops.

2. For suspended floors lighter than 100 mm (4 inch) thick concrete, select deflection requirements from next higher span.

3. For projects in seismic areas, use only SS & DS type isolators and snubbers.

4. For floor mounted in-line centrifugal blowers (ARR 1): use "B" type in lieu of "R" type base.

5. Suspended: Use "H" isolators of same deflection as floor mounted.

- - - E N D - - -

T-3

---INTENTIONALLY BLANK---

6.

TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 05 93 - 1

SECTION 23 05 93

A. Testing, adjusting, and balancing (TAB) of heating, ventilating and air conditioning (HVAC) systems and plumbing water recirculation. TAB includes the following:

1. Planning TAB procedures.

2. Reviewing Contract Documents for producing and submitting a report.

3. Producing and submitting a report summarizing observations from the

Contract Documents review.

4. Producing and submitting a Systems Inspection report.

5. Producing and submitting a Duct Air Leakage Test Report.

6. Producing and submitting a Systems Readiness Report.

7. Balancing and adjusting air and water distribution systems to provide design performance; and testing performance of equipment and automatic controls for the following systems:

a. Air Systems

b. Hydronic Systems

c. Plumbing recirculation systems.

8. Recording and reporting vibration and sound measurements.

9. Control Systems verification.

B. A complete listing of common acronyms and abbreviations are included in

Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

C. Definitions:

1. Basic TAB used in this Section: Testing, Adjusting, and Balancing

Chapter of ASHRAE Handbook-HVAC Applications.

2. TAB: Testing, Adjusting, and Balancing; the process of checking and adjusting HVAC systems to meet design objectives and recording and reporting measurements.

3. AABC: Associated Air Balance Council.

4. NEBB: National Environmental Balancing Bureau.

5. SMACNA: Sheet Metal and Air Conditioning Contractors National

Association.

6. TABB: Testing, Adjusting and Balancing Bureau.

7. Hydronic Systems: Includes ground source heat pump condenser water.

23 05 93 - 2

8. Air Systems: Includes all outside air, supply air, return air, exhaust air, and relief air systems.

9. Flow rate tolerance: The allowable percentage variation, minus to plus, of actual flow rate from values (design) in the contract documents.

10. Out-of-tolerance data: When applied to TAB work this phrase means “a measurement which does not fall within the prescribed range for a specific parameter.”

11. Season of maximum heating load: The time of year when the outdoor temperature at the project site remains within plus or minus 20 degrees F of the project site’s winter outdoor design temperature, throughout the period of TAB data recording.

12. Season of maximum cooling load: The time of year when the outdoor temperature at the project site remains within plus or minus 5 degrees F of the project site’s summer outdoor design temperature through the period of TAB data recording.

13. Season 1, Season 2: Depending upon when the project HVAC is completed and ready for TAB, Season 1 is defined, thereby defining

Season 2. Season 1 could be the season of maximum heating load, or the season of maximum cooling load.

1.2 RELATED WORK

A. Section 01 00 02, GENERAL REQUIREMENTS (Minor NCA Projects).

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 42 19, REFERENCE STANDARDS.

D. Section 01 81 13, SUSTAINABLE DESIGN REQUIREMENTS.

E. Section 01 91 00, GENERAL COMMISSIONING REQUIREMENTS.

F. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

G. Section 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND

EQUIPMENT.

H. Section 23 07 11, HVAC INSULATION.

I. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

J. Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

K. Section 23 31 00, HVAC DUCTS AND CASINGS.

23 05 93 - 3

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. Air Movement and Control Association (AMCA):

201-2012................Fans and Systems

C. American Society of Heating, Refrigerating and Air-Conditioning

Engineers, Inc. (ASHRAE):

Latest Edition..........ASHRAE Handbook-HVAC Applications, Testing, Adjusting, and Balancing Chapter and Noise and

Vibration Control Chapter

62.1-2022...............Ventilation for Acceptable Indoor Air Quality

90.1-2022...............Energy Efficient Design of New Buildings Except

Low-Rise Residential Buildings

D. Associated Air Balance Council (AABC):

2016....................National Standards for Total System Balance, 7th Edition

E. National Environmental Balancing Bureau (NEBB):

2019....................Procedural Standard for Testing, Adjusting and

Balancing of Environmental Systems, 9th Edition

2015(2018e).............Procedural Standard for Measurement of Sound and Vibration, 3rd Edition

2019....................Procedural Standards for Whole Building Systems

Technical Commissioning for New Construction, 2nd Edition

F. Sheet Metal and Air Conditioning Contractors National Association

(SMACNA):

2002....................HVAC Systems Testing, Adjusting and Balancing, 3rd Edition

2006....................HVAC Systems Duct Design, 4th Edition

G. Testing, Adjusting and Balancing Bureau (TABB):

........................Quality Assurance Program

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES.

23 05 93 - 4

B. Information and material submitted under this section shall be marked

“SUBMITTED UNDER SECTION 23 05 93, TESTING, ADJUSTING, AND BALANCING

FOR HVAC”, with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensions, weights, materials, applications, standard compliance, model numbers, size, and capacity.

D. TAB Report Forms: Use standard TAB contractor's forms approved by COR .

E. Submit names and qualifications of TAB agency and TAB specialists within 60 days after the notice to proceed. Submit information on three recently completed projects and a list of proposed test equipment.

F. For use by the Contracting Officer’s Representative (COR) staff, submit one complete set of applicable AABC, NEBB, or TABB/SMACNA publications that will be the basis of TAB work.

G. Submit the following for Review and Approval:

1. Contract Documents Review Report within 45 days for conventional design projects and within 45 days for design-build projects after the system layout on air, and water is completed by the Contractor.

2. Systems Inspection Report on equipment and installation for conformance with design.

3. Duct Air Leakage Test Report.

4. Systems Readiness Report.

5. Intermediate and Final Certified TAB reports including flow balance and adjustments, performance tests, vibration tests, and sound tests.

6. Include in final reports uncorrected installation deficiencies noted during TAB and applicable explanatory comments on test results that differ from design requirements.

7. Strategies and Procedures Plan: Within 60 days of Contractor's

Notice to Proceed, submit TAB strategies and step-by-step procedures as specified in paragraph, PREPARATION in Part 3.

8. Sample report forms.

H. Prior to request for Final Inspection, submit completed Test and

Balance report for the area.

I. Instrument calibration reports, to include the following:

1. Instrument type and make.

2. Serial number.

23 05 93 - 5

3. Application.

4. Dates of use.

5. Dates of calibration.

J. Completed System Readiness Checklist provided by the Commissioning

Agent and completed by the contractor, signed by a qualified technician and dated on the date of completion, in accordance with the requirements of Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

1.5 QUALITY ASSURANCE

A. Refer to paragraphs QUALITY ASSURANCE and SUBMITTALS in Section

23 05 11, COMMON WORK RESULTS FOR HVAC.

B. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, "Air

Balancing."

C. ASHRAE/IESNA Compliance: Applicable requirements in ASHRAE/IESNA 90.1, "System Balancing."

D. Qualifications:

1. TAB Agency: The TAB agency shall be a subcontractor of the General

Contractor and shall report to and be paid by the General

Contractor.

2. The TAB agency shall be either a certified member of AABC or certified by the NEBB, SMACNA, or TABB to perform TAB service for

HVAC, water balancing, and vibration and sound testing of equipment.

The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the agency loses subject certification during this period, the General Contractor shall immediately notify the COR and submit another TAB firm for approval. Any agency that has been the subject of disciplinary action by either the AABC, NEBB, or TABB within the five years preceding Contract Award shall not be eligible to perform any work related to the TAB. All work performed in this Section and in other related Sections by the TAB agency shall be considered invalid if the TAB agency loses its certification prior to Contract completion, and the successor agency’s review shows unsatisfactory work performed by the predecessor agency.

3. TAB Specialist: The TAB specialist shall be either a member of AABC or an experienced technician of the agency certified by NEBB or

TABB. The certification shall be maintained for the entire duration of duties specified herein. If, for any reason, the Specialist loses

23 05 93 - 6 subject certification during this period, the General Contractor shall immediately notify the COR and submit another TAB Specialist for approval. Any individual that has been the subject of disciplinary action by either the AABC, NEBB, or TABB within the five years preceding Contract Award shall not be eligible to perform any duties related to the HVAC systems, including TAB. All work specified in this Section and in other related Sections performed by the TAB specialist shall be considered invalid if the TAB Specialist loses its certification prior to Contract completion and must be performed by an approved successor.

4. TAB Specialist shall be identified by the General Contractor within

60 days after the notice to proceed. The TAB specialist will be coordinating, scheduling and reporting all TAB work and related activities and will provide necessary information as required by the

COR. The responsibilities would specifically include:

a. Directly supervising all TAB work.

b. Signing the TAB reports that bear the seal of the TAB standard.

The reports shall be accompanied by report forms and schematic drawings required by the TAB standard, AABC, NEBB, or TABB.

c. Following all TAB work through its satisfactory completion.

d. Providing final markings of settings of all HVAC adjustment devices.

e. Permanently marking location of duct test ports.

5. All TAB technicians performing TAB work shall be experienced and must have done satisfactory work on a minimum of 3 projects comparable in size and complexity to this project. Qualifications must be certified by the TAB agency in writing.

E. Test Equipment Criteria: The instrumentation shall meet the accuracy and calibration requirements established by AABC National Standards, TABB/SMACNA International Standards, or by NEBB Procedural Standards for Testing, Adjusting and Balancing of Environmental Systems and instrument manufacturer. Provide calibration history of the instruments to be used for test and balance purpose.

F. TAB Criteria:

1. One or more of the applicable AABC, NEBB, or SMACNA publications, supplemented by ASHRAE Handbook-HVAC Applications, Testing, 23 05 93 - 7

Adjusting, and Balancing Chapter, and requirements stated herein shall be the basis for planning, procedures, and reports.

2. Flow rate tolerance: Following tolerances are allowed. For tolerances not mentioned herein follow ASHRAE Handbook-HVAC

Applications, Testing, Adjusting, and Balancing Chapter, as a guideline. Air Filter resistance during tests, artificially imposed if necessary, shall be at least 90 percent of final values for all filters.

a. Air handling unit and all other fans, cubic meters/min (cubic feet per minute): Minus 0 percent to plus l0 percent.

b. Air terminal units (maximum values): Minus 2 percent to plus l0 percent.

c. Outside air: 0 percent to plus 10 percent.

d. Exhaust air: 0 to 10 percent more than design.

e. Individual room air outlets and inlets, and air flow rates not mentioned above: Minus 2 percent to plus l0 percent except if the air to a space is 100 CFM or less the tolerance would be 0 to plus 5 percent.

f. Condenser water pumps: 0 percent to plus 5 percent.

3. Systems shall be adjusted for energy efficient operation as described in PART 3.

4. When field TAB work begins typical TAB procedures and results shall be demonstrated to the COR for one air distribution system

(including all fans, three terminal units and three rooms) and one hydronic system (pumps and three coils).

G. TAB Conference: Meet with COR on approval of the TAB strategies and procedures plan to develop a mutual understanding of the details.

Require the participation of the TAB field supervisor and technicians.

Provide seven days' advance notice of scheduled meeting time and location. The following shall be the agenda items for the TAB conference:

1. The Contract Documents examination report.

2. The TAB plan.

3. Coordination and cooperation of trades and subcontractors.

4. Coordination of documentation and communication flow.

23 05 93 - 8

1.6 PROJECT CONDITIONS

A. Full Occupancy: Site and existing building will be occupied during entire TAB period. Cooperate with Government during TAB operations to minimize conflicts with operations.

1.7 COORDINATION

A. Notice: Provide ten calendar days' advance notice to COR for each test.

Include scheduled test dates and times.

B. Perform TAB after leakage and pressure tests on air and water distribution systems have been satisfactorily completed.

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. See Section 23 07 11, HVAC PLANT INSULATION. Provide for repair of insulation removed or damaged for TAB work.

PART 3 - EXECUTION

3.1 GENERAL

A. Refer to TAB Criteria in paragraph QUALITY ASSURANCE.

B. Obtain applicable contract documents and copies of approved submittals for HVAC equipment and automatic control systems.

3.2 CONTRACT DOCUMENTS REVIEW REPORT

A. The TAB Specialist shall review the Contract Plans and specifications and advise the COR of any design deficiencies that would preclude proper TAB of systems and equipment or prevent the HVAC systems from effectively operating in accordance with the sequence of operation specified or prevent the effective and accurate TAB of the system. The

TAB Specialist shall provide a report individually listing each deficiency and the corresponding proposed corrective action necessary for proper system operation.

3.3 EXAMINATION

A. Examine systems for installed balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are accessible.

B. Coordinate with the COR the examination of ceiling plenums used for supply, return, or relief air to verify that they meet the leakage

23 05 93 - 9 class of connected ducts as scheduled on drawings and are properly separated from adjacent areas. Verify that penetrations in plenum walls are sealed and fire-stopped if required.

C. Examine equipment performance data including fan and pump curves.

1. Relate performance data to Project conditions and requirements, including system effects that can create undesired or unpredicted conditions that cause reduced capacities in all or part of a system.

2. Calculate system-effect factors to reduce performance ratings of

HVAC equipment when installed under conditions different from the conditions used to rate equipment performance. To calculate system effects for air systems, use tables and charts found in AMCA 201 or in SMACNA's "HVAC Systems Duct Design." Compare results with the design data and installed conditions.

D. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed.

E. Examine test reports specified in individual system and equipment

Sections.

F. Examine HVAC equipment and filters and verify that bearings are greased, belts are aligned and tight, and equipment with functioning controls is ready for operation.

G. Examine terminal units, such as variable-air-volume boxes, and verify that they are accessible and their controls are connected and functioning.

H. Examine strainers. Verify that startup screens are replaced by permanent screens with indicated perforations.

I. Examine three-way valves for…