Attachment- 32 V2 549A4-21-700 100 Bid Document Specifications.pdf

VA 549A4-21-700 EHRM Infrastructure Upgrades

VA North Texas Healthcare (VHANTX), Bonham, TX

100% Construction Documents

11-28-22

00 01 10-1

TABLE OF CONTENTS

DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

TABLE OF CONTENTS

Section 00 01 10

SECTION NO. DIVISION AND SECTION TITLES DATE

DIVISION 00 - SPECIAL SECTIONS

00 01 15 List of Drawing Sheets 05-20

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 11-21

01 32 16.15 Project Schedules (Small Projects – Design/Bid/Build 03-20

01 33 23 Shop Drawings, Product Data, and Samples 09-22

01 35 26 Safety Requirements 10-22

01 42 19 Reference Standards 11-20

01 45 00 Quality Control 02-21

01 45 29 Testing Laboratory Services 11-18

01 57 19 Temporary Environmental Controls 01-21

01 74 19 Construction Waste Management 04-22

01 91 00 General Commissioning Requirements 04-22

DIVISION 02 – EXISTING CONDITIONS

02 21 13 Site Surveys 01-21

02 41 00 Demolition 08-17

02 82 11 Traditional Asbestos Abatement 01-21

02 82 13.13 Glovebag Asbestos Abatement 01-21

02 82 13.19 Asbestos Floor Tile & Mastic Abatement 01-21

02 82 13.21 Asbestos Roofing Abatement 01-21

02 82 13.31 Asbestos Transite-Type Abatement 01-21

02 83 33 13 Lead Based Paint 01-21

DIVISION 03 – CONCRETE – NOT USED

DIVISION 04 – MASONRY – NOT USED

DIVISION 05 – METALS

05 50 00 Metal Fabrications 08-18

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES - NOT USED

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 27 26 Fluid-Applied Membrane Air Barrier, Vapor Permeable 01-21

07 84 00 Firestopping 01-21

07 92 00 Joint Sealants 04-22

07 95 13 Expansion Joint Cover Assemblies 01-21

100% Construction Documents

11-28-22

00 01 10-2

TABLE OF CONTENTS

SECTION NO. DIVISION AND SECTION TITLES DATE

DIVISION 08 - OPENINGS

08 11 13 Hollow Metal Doors and Frames 01-21

08 14 00 Interior Wood Doors 01-21

08 31 13 Access Doors and Frames 04-22

08 71 00 Door Hardware 05-22

08 80 00 Glazing 01-21

DIVISION 09 – FINISHES

09 05 16 Subsurface Preparation for Floor Finishes 01-21

09 22 16 Non-Structural Metal Framing 06-18

09 29 00 Gypsum Board 04-20

09 65 13 Resilient Base and Accessories 01-21

09 65 19 Resilient Tile Flooring 05-18

09 91 00 Painting 01-21

DIVISION 10 – SPECIALTIES

10 22 13 Wire Mesh Partitions 01-21

10 26 00 Wall and Door Protection 01-21

10 44 13 Fire Extinguisher Cabinets 08-18

DIVISION 11 – EQUIPMENT - NOT USED

DIVISION 12 – FURNISHINGS - NOT USED

DIVISION 13 - SPECIAL CONSTRUCTION

13 05 41 Seismic Restraint Requirements for Non-Structural

Components

01-14

DIVISION 14– CONVEYING EQUIPEMENT - NOT USED

DIVISION 21- FIRE SUPPRESSION

21 08 00 Commissioning of Fire Suppression Systems 11-16

21 13 13 Wet-Pipe Sprinkler Systems 06-15

21 22 00 Clean Agent Fire Suppression Systems 05-15

DIVISION 22 – PLUMBING - NOT USED

DIVISION 23 – HEATING, VENTILATING, AND AIR

CONDITIONING (HVAC)

23 05 11 Common Work Results for HVAC 10-22

23 05 12 General Motor Requirements for HVAC and Steam

Generation Equipment

10-22

100% Construction Documents

11-28-22

00 01 10-3

TABLE OF CONTENTS

SECTION NO. DIVISION AND SECTION TITLES DATE

23 05 41 Noise and Vibration Control for HVAC Piping and

Equipment

10-22

23 05 93 Testing, Adjusting, and Balancing for HVAC 10-22

23 08 00 Commissioning of HVAC Systems 10-22

23 09 23 Direct-Digital Control System for HVAC 10-22

23 21 13 Hydronic Piping 10-22 23 21 23 Hydronic Pumps 10-22

23 23 00 Refrigerant Piping 10-22

23 31 00 HVAC Ducts and Casings 10-22

23 36 00 Air Terminal Units 10-22

23 37 00 Air Outlets and Inlets 10-22

23 81 00 Decentralized Unitary HVAC Equipment 10-22

23 81 23 Computer-Room Air-Conditioners 10-22

DIVISION 25 – INTEGRATED AUTOMATION – NOT USED

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 01-16

26 05 19 Low-Voltage Electrical Power Conductors and Cables 01-17

26 05 26 Grounding and Bonding for Electrical Systems 01-17

26 05 33 Raceway and Boxes for Electrical Systems 01-18

26 05 73 Overcurrent Protective Device Coordination Study 01-18

26 08 00 Commissioning of Electrical Systems 11-16

26 22 00 Low-Voltage Transformers 01-18

26 24 16 Panelboards 01-18

26 26 00 Power Distribution Units for Static Uninterruptible

Power Systems

01-18

26 27 26 Wiring Devices 01-18

26 29 11 Motor Controllers 01-18

26 29 21 Enclosed Switches and Circuit Breakers 01-17

26 36 23 Automatic Transfer Switches 01-17

26 41 00 Facility Lightning Protection 01-17

26 51 00 Interior Lighting 01-18

DIVISION 27 – COMMUNICATIONS

27 05 11 Requirements for Communications Installations 06-15

27 05 26 Grounding and Bonding for Communications Systems 06-15

27 05 33 Conduits and Backboxes for Communications Systems 11-21

27 05 36 Cable Trays for Communications Systems 11-21

27 05 53 Identification for Communications Systems 07-21

27 08 00 Commissioning of Communications Systems 11-16

27 10 00 Structured Cabling 11-21

27 11 00 Telecommunications Room Fittings 06-15

27 11 16 Communications Cabinets, Racks, Frames, and Enclosures 11-21

27 11 19 Communications Termination Blocks and Patch Panels 11-21

27 11 26 Communications Rack Mounted Power Protection and Power

Strips

11-21

27 13 13 Communications Copper Backbone Cabling 11-21

100% Construction Documents

11-28-22

00 01 10-4

TABLE OF CONTENTS

SECTION NO. DIVISION AND SECTION TITLES DATE

27 13 13.13 Communications Copper Cable Splicing and Terminations 11-21

27 13 23 Communications Optical Fiber Backbone Cabling 11-21

27 15 13 Communications Copper Horizontal Cabling 11-21

27 15 13.13 Communications Optical fiber Cable Splicing and

Terminations

11-21

27 16 19 Communications Patch Cords, Station Cords, and Cross

Connect Wire

11-21

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 05 00 Common Work Results for Electronic Safety and Security 04-18

28 05 13 Conductors and Cables for Electronic Safety and

Security

10-18

28 05 26 Grounding and Bonding for Electronic Safety and

Security

09-11

28 08 00 Commissioning of Electronic Safety and Security Systems

28 13 00 Physical Access Control Systems 10-11

28 16 00 Intrusion Detection System 10-11

28 23 00 Video Surveillance 09-11

28 31 00 Fire Detection and Alarm Systems 10-11

DIVISION 31 – EARTHWORK

31 20 00 Earthwork 07-16

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 05 39 Cement and Concrete for Exterior Improvements 08-16

32 12 16 Asphalt Paving 09-15

32 31 13 Chain Link Fences and Gates 05-18

32 90 00 Planting

DIVISION 33 – UTILITIES - NOT USED

DIVISION 34 – TRANSPORTATION - NOT USED

DIVISION 48 – Electrical Power Generation - NOT USED

100% Bid Documents

10-01-22

23 05 41 - 1

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 41

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies the application of noise control measures, and vibration control techniques to boiler plant rotating equipment and parts including chillers, cooling towers, boilers, pumps, fans, compressors, motors and steam turbines.

B. A complete listing of all common acronyms and abbreviations are included in Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

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

1.2 RELATED WORK

A. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA and SAMPLES.

B. Section 23 05 10, COMMON WORK RESULTS FOR HVAC.

C. Section 23 31 00, HVAC DUCTS and CASINGS.

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

1.3 QUALITY ASSURANCE

A. Refer to article, QUALITY ASSURANCE in specification Section 23 05 11, COMMON WORK RESULTS FOR HVAC and STEAM GENERATION.

B. Noise Criteria:

1. Noise levels in all 8 octave bands due to equipment and duct systems shall not exceed following NC levels:

TYPE OF ROOM NC LEVEL

Audio Speech Pathology 25

Audio Suites 25

Auditoriums, Theaters 35-40

Bathrooms and Toilet Rooms 40

Chapels 35

Conference Rooms 35

Corridors (Nurse Stations) 40

Corridors(Public) 40

Dining Rooms, Food Services/ Serving 40

Examination Rooms 35

Gymnasiums 50

100% Bid Documents

10-01-22

23 05 41 - 2

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

Kitchens 50

Laboratories (With Fume Hoods) 45 to 55

Laundries 50

Lobbies, Waiting Areas 40

Locker Rooms 45

Offices, Large Open 40

Offices, Small Private 35

Operating Rooms 40

Patient Rooms 35

Phono/Cardiology 25

Recreation Rooms 40-45

Shops 50

SPD (Decontamination and Clean Preparation) 45

Therapeutic Pools 45

Treatment Rooms 35

Warehouse 50

X-Ray and General Work Rooms 40

2. For equipment which has no sound power ratings scheduled on the plans, the contractor shall select equipment such that the fore-going noise criteria, local ordinance noise levels, and OSHA re-quirements are not exceeded. Selection procedure shall be in accordance with ASHRAE Fundamentals Handbook, Chapter 8, Sound and

Vibration.

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. The room attenuating effect is defined as the difference between sound power level emitted to room and sound pressure level in room.

4. In absence of specified measurement requirements, measure equipment noise levels three feet from equipment and at an elevation of maxi-mum noise generation.

100% Bid Documents

10-01-22

23 05 41 - 3

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

D. Allowable Vibration Tolerances for Rotating, Non-reciprocating Equip-ment: Not to exceed a self-excited vibration maximum velocity of 5 mm per second (0.20 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.

1.4 SUBMITTALS

A. Submit in accordance with specification Section 01 33 23, SHOP

DRAWINGS, PRODUCT DATA, and SAMPLES.

B. Manufacturer's Literature and Data:

1. Vibration isolators:

a. Floor mountings

b. Hangers

c. Snubbers

d. Thrust restraints

2. Bases.

3. Seismic restraint provisions and bolting.

4. Acoustical enclosures.

C. Isolator manufacturer shall furnish with submittal load calculations for selection of isolators, including supplemental bases, based on lowest operating speed of equipment supported.

1.5 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):

Handbook 2017...........Fundamentals Handbook, Chapter 8, Sound and

Vibration

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

A123/A123M-2017.........Standard Specification for Zinc (Hot-Dip

Galvanized) Coatings on Iron and Steel Products

A307-2016...............Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength

D2240-05(2010)..........Standard Test Method for Rubber Property -

Durometer Hardness

100% Bid Documents

10-01-22

23 05 41 - 4

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

D. Manufacturers Standardization (MSS):

SP-58-2018..............Pipe Hangers and Supports-Materials, Design and

Manufacture

E. Occupational Safety and Health Administration (OSHA):

29 CFR 1960.95..........Occupational Noise Exposure

F. American Society of Civil Engineers (ASCE):

ASCE 7-2017.............Minimum Design Loads for Buildings and Other

Structures.

G. American National Standards Institute / Sheet Metal and Air

Conditioning Contractor’s National Association (ANSI/SMACNA):

001-2008................Seismic Restraint Manual: Guidelines for

Mechanical Systems, 3rd Edition.

H. International Code Council (ICC):

IBC 2018................International Building Code.

I. Department of Veterans Affairs (VA):

H-18-8 2016.............Seismic Design Requirements.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS

A. Type of isolator, base, and minimum static deflection shall be as required for 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. Elastometric Isolators shall comply with ASTM D2240 and be oil resistant neoprene with a maximum stiffness of 60 durometer and have a straight-line deflection curve.

C. Exposure to weather: Isolator housings to be either hot dipped galvanized or powder coated to ASTM B117 salt spray testing standards.

Springs to be powder coated or electro galvanized. All hardware to be electro galvanized. In addition provide limit stops to resist wind velocity. Velocity pressure established by wind shall be calculated in accordance with section 1609 of the International Building Code. A minimum wind velocity of 75 mph shall be employed.

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

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

100% Bid Documents

10-01-22

23 05 41 - 5

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

2.3 VIBRATION ISOLATORS

A. Floor Mountings:

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

2. Spring Isolators (Type S): Shall be free-standing, laterally stable and include acoustical friction pads and leveling bolts. Isolators shall 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. 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 to prevent mechanical short circuiting.

4. Pads (Type D), Washers (Type W), and Bushings (Type L): Pads shall be natural rubber or neoprene waffle, neoprene and steel waffle, or reinforced duck and neoprene. Washers and bushings shall be reinforced duck and neoprene. Washers and bushings shall be reinforced duck and neoprene. Size pads for a maximum load of 345 kPa (50 pounds per square inch).

B. Hangers: Shall be combination neoprene and springs unless otherwise noted and shall allow for expansion of pipe.

1. Combination Neoprene and Spring (Type H): Vibration hanger shall contain a spring and double deflection neoprene element in series.

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

2. Spring Position Hanger (Type HP): Similar to combination neoprene and spring hanger except hanger shall hold piping at a fixed elevation during installation and include a secondary adjustment feature to transfer load to spring while maintaining same position.

100% Bid Documents

10-01-22

23 05 41 - 6

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

3. Neoprene (Type HN): Vibration hanger shall contain a double deflection type neoprene isolation element. Hanger rod shall be separated from contact with hanger bracket by a neoprene grommet.

4. Spring (Type HS): Vibration hanger shall contain a coiled steel spring in series with a neoprene grommet. Spring shall have a diameter not less than 0.8 of compressed operating spring height.

Spring shall have a minimum additional travel of 50 percent between design height and solid height. Spring shall permit a 15 degree angular misalignment without rubbing on hanger box.

5. Hanger supports for piping 50 mm (2 inches) and larger shall have a pointer and scale deflection indicator.

6. Hangers used in seismic applications shall be provided with a neoprene and steel rebound washer installed ¼’ clear of bottom of hanger housing in operation to prevent spring from excessive upward travel

C. Snubbers: Each spring mounted base shall have a minimum of four all-directional or eight two directional (two per side) seismic snubbers that are double acting. Elastomeric materials shall be shock absorbent neoprene bridge quality bearing pads, maximum 60 durometer, replaceable and have a minimum thickness of 6 mm (1/4 inch). Air gap between hard and resilient material shall be not less than 3 mm (1/8 inch) nor more than 6 mm (1/4 inch). Restraints shall be capable of withstanding design load without permanent deformation.

D. Thrust Restraints (Type THR): Restraints shall provide a spring element contained in a steel frame with neoprene pads at each end attachment.

Restraints shall have factory preset thrust and be field adjustable to allow a maximum movement of 6 mm (1/4 inch) when the fan starts and stops. Restraint assemblies shall include rods, angle brackets and other hardware for field installation.

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 not require a complete supplementary base. To assure adequate stiffness, height of members shall be 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.

100% Bid Documents

10-01-22

23 05 41 - 7

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

B. Integral Structural Steel Base (Type B): Design base with isolator brackets to reduce mounting height of equipment which require a complete supplementary rigid base. To assure adequate stiffness, height of members shall be a minimum of 1/12 of longest base dimension, but not less than 100 mm (four inches).

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

Provide grout under uneven supports. Channel depth shall be a minimum of 1/12 of longest dimension of base but not less than 150 mm (six inches). Form shall include 13-mm (1/2-inch) reinforcing bars welded in place on minimum of 203 mm (eight inch) centers running both ways in a layer 40 mm (1-1/2 inches) above bottom. Use height saving brackets in all mounting locations. Weight of inertia base shall be equal to or greater than weight of equipment supported to provide a maximum peak-to-peak displacement of 2 mm (1/16 inch).

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

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

Isolator (Type S) requirements.

2.5 SOUND ATTENUATING UNITS

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

2.6 ACOUSTICAL ENCLOSURES IN MECHANICAL ROOMS

Provide where shown on the drawings. Enclosures shall be removable and sectional, of a size and weight that sections can be readily handled with typical lifting and moving equipment available in the equipment room. Enclosures must contain access openings, observation ports, lights, and ventilation where required for normal operation, observation and servicing.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Vibration Isolation:

100% Bid Documents

10-01-22

23 05 41 - 8

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

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. Electrical, drain, piping connections, and other items made to rotating or reciprocating equipment (pumps, compressors, etc.) which rests on vibration isolators, shall be isolated from building structure for first three hangers or supports with a deflection equal to that used on the corresponding equipment.

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. Bases shall be 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. Pipe elbow supports shall not short circuit pump vibration to structure.

6. Non-rotating equipment such as heat exchangers and convertors shall be mounted on isolation units having the same static deflection as the isolation hangers or support of the pipe connected to the equipment.

B. 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.

C. Attach thrust limits at centerline of thrust and adjust to a maximum of

1/4inch (6-mm) movement during start and stop.

D. Adjust active height of spring isolators.

E. Adjust snubbers according to manufacturer's recommendations.

100% Bid Documents

10-01-22

23 05 41 - 9

NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT

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.

3.3 COMMISSIONING

A. Provide commissioning documentation in accordance with the requirements of section 23 08 00 – COMMISSIONING OF HVAC SYSTEMS for all inspection, start up, and contractor testing required above and required by the

System Readiness Checklist provided by the Commissioning Agent.

B. Components provided under this section of the specification will be tested as part of a larger system. Refer to section 23 08 00 –

COMMISSIONING OF HVAC SYSTEMS and related sections for contractor responsibilities for system commissioning.

- - - E N D - - -

100% Bid Documents

10-01-22

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

ABSORPTION --- D 0.3 --- SP 0.8 --- SP 1.5 --- SP 1.5 --- SP 2.0

PACKAGED HERMETIC --- D 0.3 --- SP 0.8 --- SP 1.5 --- SP 1.5 R SP 2.5

OPEN CENTRIFUGAL B D 0.3 B SP 0.8 --- SP 1.5 B SP 1.5 B SP 3.5

RECIPROCATING:

ALL --- D 0.3 --- SP 0.8 R SP 2.0 R SP 2.5 R SP 3.5

COMPRESSORS AND VACUUM PUMPS

UP THROUGH 1-1/2

HP

--- D,L, W

0.8 ---- D,L, W

0.8 --- D,L, W

1.5 --- D,L, W

1.5 --- D,L, W

2 HP AND OVER:

500 - 750 RPM --- D 0.8 --- S 0.8 --- S 1.5 --- S 1.5 --- S 2.5

750 RPM & OVER --- D 0.8 --- S 0.8 --- S 1.5 --- S 1.5 --- S 2.5

PUMPS

CLOSE

COUPLED

UP TO

1-1/2

HP

--- --- --- --- D,L, W

--- --- D,L, W

--- --- D,L, W

--- --- D,L, W

2 HP

OVER

--- --- --- I S 0.8 I S 1.5 I S 1.5 I S 2.0

100% Bid Documents

10-01-22

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

LARGE

INLINE

Up to

25 HP

--- --- --- --- S 0.75 --- S 1.50 --- S 1.50 --- --- NA

26 HP

THRU

30 HP

--- --- --- --- S 1.0 --- S 1.50 --- S 2.50 --- --- NA

BASE

MOUNTED

UP TO

10 HP

--- --- --- --- D,L, W

--- --- D,L, W

--- --- D,L, W

--- --- D,L, W

15 HP

THRU

40 HP

I S 1.0 I S 1.0 I S 2.0 I S 2.0 I S 2.0

50 HP

OVER

I S 1.0 I S 1.0 I S 2.0 I S 2.5 I S 2.5

ROOF FANS

ABOVE OCCUPIED AREAS:

5 HP & OVER --- --- --- CB S 1.0 CB S 1.0 CB S 1.0 CB S 1.0

CENTRIFUGAL FANS

UP TO 50 HP:

UP TO 200 RPM B N 0.3 B S 2.5 B S 2.5 B S 3.5 B S 3.5

201 - 300 RPM B N 0.3 B S 2.0 B S 2.5 B S 2.5 B S 3.5

301 - 500 RPM B N 0.3 B S 2.0 B S 2.0 B S 2.5 B S 3.5

501 RPM & OVER B N 0.3 B S 2.0 B S 2.0 B S 2.0 B S 2.5

100% Bid Documents

10-01-22

T-3

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

60 HP & OVER:

UP TO 300 RPM B S 2.0 I S 2.5 I S 3.5 I S 3.5 I S 3.5

301 - 500 RPM B S 2.0 I S 2.0 I S 2.5 I S 3.5 I S 3.5

501 RPM & OVER B S 1.0 I S 2.0 I S 2.0 I S 2.5 I S 2.5

COOLING TOWERS

UP TO 500 RPM --- --- --- --- SP 2.5 --- SP 2.5 --- SP 2.5 --- SP 3.5

501 RPM & OVER --- --- --- --- SP 0.75 --- SP 0.75 --- SP 1.5 --- SP 2.5

INTERNAL COMBUSTION ENGINES

UP TO 25 HP I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

30 THRU 100 HP I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

125 HP & OVER I N 0.75 I N 1.5 I S 2.5 I S 3.5 I S 4.5

AIR HANDLING UNIT PACKAGES

SUSPENDED:

UP THRU 5 HP --- --- --- --- H 1.0 --- H 1.0 --- H 1.0 --- H 1.0

7-1/2 HP & OVER:

UP TO 500 RPM --- --- --- --- H,

THR

1.5 --- H, THR

2.5 --- H, THR

2.5 --- H, THR

2.5

501 RPM & OVER --- --- --- --- H,

THR

0.8 --- H, THR

0.8 --- H,TH

R

0.8 --- H,TH

R

2.0

100% Bid Documents

10-01-22

T-4

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

FLOOR MOUNTED:

UP THRU 5 HP --- D --- --- S 1.0 --- S 1.0 --- S 1.0 --- S 1.0

7-1/2 HP & OVER:

UP TO 500 RPM --- D --- R S,

THR

1.5 R S, THR

2.5 R S, THR

2.5 R S, THR

2.5

501 RPM & OVER --- D --- --- S,

THR

0.8 --- S, THR

0.8 R S, THR

1.5 R S, THR

2.0

HEAT PUMPS

ALL --- S 0.75 --- S 0.75 --- S 0.75 CB S 1.5 --- --- NA

CONDENSING UNITS

ALL --- SS 0.25 --- SS 0.75 --- SS 1.5 CB SS 1.5 --- --- NA

IN-LINE CENTRIFUGAL AND VANE AXIAL FANS, FLOOR MOUNTED: (APR 9)

UP THRU 50 HP:

UP TO 300 RPM --- D --- R S 2.5 R S 2.5 R S 2.5 R S 3.5

301 - 500 RPM --- D --- R S 2.0 R S 2.0 R S 2.5 R S 2.5

501 - & OVER --- D --- --- S 1.0 --- S 1.0 R S 2.0 R S 2.5

60 HP AND OVER:

301 - 500 RPM R S 1.0 R S 2.0 R S 2.0 R S 2.5 R S 3.5

501 RPM & OVER R S 1.0 R S 2.0 R S 2.0 R S 2.0 R S 2.5

100% Bid Documents

10-01-22

T-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 separate chiller building on grade, pump isolators may be omitted.

4. Direct bolt fire pumps to concrete base. Provide pads (D) for domestic water booster pump package.

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

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

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

100% Bid Documents

10-01-22

23 05 93 - 1

TESTING, ADJUSTING, AND BALANCING FOR HVAC

SECTION 23 05 93

TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 DESCRIPTION

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

1. Planning systematic TAB procedures.

2. Design Review Report.

3. Systems Inspection report.

4. Duct Air Leakage test report.

5. Systems Readiness Report.

6. Balancing air and water distribution systems; adjustment of total system to provide design performance; and testing performance of equipment and automatic controls.

7. Vibration and sound measurements.

8. Recording and reporting results.

9.Document critical paths of flow on reports.

B. Definitions:

1. Basic TAB used in this Section: Chapter 39, "Testing, Adjusting and

Balancing" of 2019 ASHRAE Handbook, "HVAC Applications".

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

3. AABC: Associated Air Balance Council.

4. NEBB: National Environmental Balancing Bureau.

5. TABB: Testing Adjusting and Balancing Bureau

6. SMACNA: Sheet Metal Contractors National Association

7. Hydronic Systems: Includes condenser water, and glycol-water systems.

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.

1.2 RELATED WORK

A. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.

B. Section 23 05 10, COMMON WORK RESULTS FOR BOILER PLANTS and STEAM

GENERATION.

100% Bid Documents

10-01-22

23 05 93 - 2

TESTING, ADJUSTING, AND BALANCING FOR HVAC

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

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

EQUIPMENT.

E. Section 23 07 11, HVAC, AND BOILER PLANT INSULATION.

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

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

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

G. Section 23 36 00, AIR TERMINAL UNITS.

I. Section 23 64 00, PACKAGED WATER CHILLERS.

J. Section 23 65 00, COOLING TOWERS.

1.3 QUALITY ASSURANCE

A. Refer to Articles, Quality Assurance and Submittals, in Section

23 05 11, COMMON WORK RESULTS FOR HVAC, Section 23 05 10, COMMON WORK

RESULTS FOR BOILER PLANTS and STEAM GENERATION, and Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

B. 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, NEEB, TABB or NEBB to perform TAB service for HVAC, water balancing and vibrations 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 qualified TAB firm for approval. Any agency that has been the subject of disciplinary action by either the AABC, TABB or NEBB 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 TABB or an experienced technician of the Agency certified by

NEBB. The certification shall be maintained for the entire duration

100% Bid Documents

10-01-22

23 05 93 - 3

TESTING, ADJUSTING, AND BALANCING FOR HVAC

of duties specified herein. If, for any reason, the Specialist loses subject certification during this period, the General Contractor shall immediately notify the Resident Engineer and submit another

TAB Specialist for approval. Any individual that has been the subject of disciplinary action by either the AABC or the NEBB 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

Resident Engineer. The responsibilities would specifically include:

a. Shall directly supervise all TAB work.

b. Shall sign 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, TABB or

NEBB.

c. Would follow all TAB work through its satisfactory completion.

d. Shall provide final markings of settings of all HVAC adjustment devices.

e. Permanently mark location of duct test ports.

f. Shall document critical paths from the fan or pump. These critical paths are ones in which are 100% open from the fan or pump to the terminal device. This will show the least amount of restriction is being imposed on the system by the TAB firm.

5. All TAB technicians performing actual 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. The lead technician shall be certified by AABC, TABB or NEBB

C. Test Equipment Criteria: The instrumentation shall meet the accuracy/calibration requirements established by AABC National

Standards, TABB/SMACNA International Standards, or by NEBB Procedural

100% Bid Documents

10-01-22

23 05 93 - 4

TESTING, ADJUSTING, AND BALANCING FOR HVAC

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.

D. TAB Criteria:

1. One or more of the applicable AABC, NEBB,TABB or SMACNA publications, supplemented by ASHRAE Handbook "2019 HVAC

Applications" Chapter 39, 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 2011 ASHRAE Handbook "2019

HVAC Applications", Chapter 39, as a guideline. Air Filter resistance during tests, artificially imposed if necessary, shall be at least 100 percent of manufacturer recommended change over pressure drop values for pre-filters and after-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. Exhaust hoods/cabinets: 0 percent to plus l0 percent.

d. Minimum outside air: 0 percent to plus 10 percent.

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

f. Heating hot water pumps and hot water coils: Minus 5 percent to plus 5 percent.

g. Chilled water and condenser water pumps: Minus 0 percent to plus

5 percent.

h. Chilled water coils: Minus 0 percent to plus 5 percent.

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

4. Typical TAB procedures and critical path results shall be demonstrated to the Resident Engineer for one air distribution system (including all fans, three terminal units, three rooms randomly selected by the COR one of which shall be a critical path) and one hydronic system (pumps and three coils) as follows:

a. When field TAB work begins.

100% Bid Documents

10-01-22

23 05 93 - 5

TESTING, ADJUSTING, AND BALANCING FOR HVAC

b. During each partial final inspection and the final inspection for the project if requested by VA.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, and SAMPLES.

B. 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.

C. For use by the Resident Engineer staff, submit one complete set of applicable AABC,NEBB or TABB publications that will be the basis of TAB work.

D. Submit Following for Review and Approval:

1. Design Review Report within 90 days for conventional design projects and within 60 days for design-build projects after the system layout on air and water side 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 TAB reports covering 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. Include in each report the critical path for each balanced branch

(air and hydronic. Every branch shall have at least one terminal device damper 100% open.

E. Prior to request for Final or Partial Final inspection, submit completed Test and Balance report for the area with noted critical paths.

1.5 APPLICABLE PUBLICATIONS

A. The following publications form a part of this specification to the extent indicated by the reference thereto. In text the publications are referenced to by the acronym of the organization.

100% Bid Documents

10-01-22

23 05 93 - 6

TESTING, ADJUSTING, AND BALANCING FOR HVAC

B. American Society of Heating, Refrigerating and Air Conditioning

Engineers, Inc. (ASHRAE):

Handbook 2019...........HVAC Applications ASHRAE Handbook, Chapter 39, Testing, Adjusting, and Balancing and Chapter

49, Sound and Vibration Control

C. Associated Air Balance Council (AABC):

7th Edition 2016 ........AABC National Standards for Total System

Balance

D. National Environmental Balancing Bureau (NEBB):

9th Edition 2019 ........Procedural Standards for Testing, Adjusting, Balancing of Environmental Systems

3rd Edition 2015 .......Procedural Standards for the Measurement of

Sound and Vibration

2rd Edition 2019 ... Standard for Whole Building Technical Commissioning of New Construction

E. Sheet Metal and Air Conditioning Contractors National Association

(SMACNA):

3rd Edition 2005 ........HVAC SYSTEMS Testing, Adjusting and Balancing

TABB- TAB Procedural Guide Current Edition

PART 2 - PRODUCTS

2.1 PLUGS

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

2.2 INSULATION REPAIR MATERIAL

See Section 23 07 11, HVAC and BOILER 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 Article, Quality Assurance.

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

3.2 DESIGN REVIEW REPORT

The TAB Specialist shall review the Contract Plans and specifications and advise the Resident Engineer of any design deficiencies that would 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

100% Bid Documents

10-01-22

23 05 93 - 7

TESTING, ADJUSTING, AND BALANCING FOR HVAC

individually listing each deficiency and the corresponding proposed corrective action necessary for proper system operation.

3.3 SYSTEMS INSPECTION REPORT

A. Inspect equipment and installation for conformance with design.

B. The inspection and report is to be done after air distribution equipment is on site and duct installation has begun, but well in advance of performance testing and balancing work. The purpose of the inspection is to identify and report deviations from design and ensure that systems will be ready for TAB at the appropriate time.

C. Reports: Follow check list format developed by AABC, NEBB or SMACNA

(TABB), supplemented by narrative comments, with emphasis on air handling units and fans. Check for conformance with submittals. Verify that diffuser and register sizes are correct. Check air terminal unit installation including their duct sizes and routing.

3.4 DUCT AIR LEAKAGE TEST REPORT

TAB Agency shall perform the leakage test as outlined in "Duct leakage

Tests and Repairs" in Section 23 31 00, HVAC DUCTS and CASINGS for TAB agency’s role and responsibilities in witnessing, recording and reporting of deficiencies.

3.5 SYSTEM READINESS REPORT

A. The TAB Contractor shall measure existing air and water flow rates associated with existing systems utilized to serve renovated areas as indicated on drawings. Submit report of findings to resident engineer.

B. Inspect each System to ensure that it is complete including installation and operation of controls. Submit report to RE in standard format and forms prepared and or approved by the Commissioning

Agent.

C. Verify that all items such as ductwork piping, dampers, valves, ports, terminals, connectors, etc., that is required for TAB are installed.

Provide a report to the Resident Engineer.

3.6 TAB REPORTS

A. Submit an intermediate report for 50 percent of systems and equipment tested and balanced to establish satisfactory test results.

B. The TAB contractor shall provide raw data immediately in writing to the

Resident Engineer if there is a problem in achieving intended results before submitting a formal report.

100% Bid Documents

10-01-22

23 05 93 - 8

TESTING, ADJUSTING, AND BALANCING FOR HVAC

C. If over 20 percent of readings in the intermediate report fall outside the acceptable range, the TAB report shall be considered invalid and all contract TAB work shall be repeated after engineering and construction have been evaluated and re-submitted for approval at no additional cost to the owner.

D. Do not proceed with the remaining systems until intermediate report is approved by the Resident Engineer.

3.7 TAB PROCEDURES

A. TAB shall be performed in accordance with the requirement of the

Standard under which TAB agency is certified by either AABC, TABB or

NEBB. Balancing shall be done proportionally to all applicable systems.

1. At least one trunk damper shall be 100% open.

2. At least one branch damper shall be 100%open per trunk.

3. At least one terminal device duct be 100% open per branch.

B. General: During TAB all related system components shall be in full operation. Fan and pump rotation, motor loads and equipment vibration shall be checked and corrected as necessary before proceeding with TAB.

Set controls and/or block off parts of distribution systems to simulate design operation of variable volume air or water systems for test and balance work.

C. Coordinate TAB procedures with existing systems and any phased construction completion requirements for the project. Provide TAB reports for each phase of the project prior to partial final inspections of each phase of the project. Return existing areas outside the work area to pre constructed conditions.

D. Allow 14 days time in construction schedule for TAB and submission of all reports for an organized and timely correction of deficiencies.

E. Air Balance and Equipment Test: Include air handling units, fans, terminal units, fan coil units, room diffusers/outlets/inlets, computer room AC units, and laboratory fume hoods and biological safety cabinets.

1. Artificially load air filters by partial blanking to produce static air pressure drop of manufacturer’s recommended pressure drop.

2. Adjust fan speeds to provide design air flow. V-belt drives, including fixed pitch pulley requirements, are specified in Section

23 05 11, COMMON WORK RESULTS FOR HVAC.

100% Bid Documents

10-01-22

23 05 93 - 9

TESTING, ADJUSTING, AND BALANCING FOR HVAC

3. Test and balance systems in all specified modes of operation, including variable volume, economizer, and fire emergency modes.

Verify that dampers and other HVAC controls function properly.

4. Variable air volume (VAV) systems:

a. Coordinate TAB, including system volumetric controls, with

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

b. Section 23 36 00, AIR TERMINAL UNITS, specifies that maximum and minimum flow rates for air terminal units (ATU) be factory set.

Check and readjust ATU flow rates if necessary to meet design criteria. Balance air distribution from ATU on full cooling maximum scheduled cubic meters per minute (cubic feet per minute). Reset room thermostats and check ATU operation from maximum to minimum cooling, to the heating mode, and back to cooling. Record and report the heating coil leaving air temperature when the ATU is in the maximum heating mode. Record and report outdoor air flow rates under all operating conditions

(The test shall demonstrate that the minimum outdoor air ventilation rate shall remain constant under al operating conditions).

c. Adjust operating pressure control setpoint to maintain the design flow to each space with the lowest setpoint.

5. Record final measurements for air handling equipment performance data sheets.

F. Water Balance and Equipment Test: Include circulating pumps, convertors, coils, coolers and condensers:

1. Coordinate water chiller flow balancing with Section 23 64 00, PACKAGED WATER CHILLERS.

2. Adjust flow rates for equipment. Set coils and evaporator to values on equipment submittals, if different from values on contract drawings.

3. Primary-secondary (variable volume) systems: Coordinate TAB with

Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC. Balance systems at design water flow and then verify that variable flow controls function as designed.

4. Record final measurements for hydronic equipment on performance data sheets. Include entering and leaving water temperatures for heating and cooling coils, and for convertors. Include entering and leaving

100% Bid Documents

10-01-22

23 05 93 - 10

TESTING, ADJUSTING, AND BALANCING FOR HVAC

air temperatures (DB/WB for cooling coils) for air handling units and reheat coils. Make air and water temperature measurements at the same time.

3.8 VIBRATION TESTING

A. Furnish instruments and perform vibration measurements as specified in

Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and

EQUIPMENT. Field vibration balancing is specified in Section 23 05 11, COMMON WORK RESULTS FOR HVAC Section 23 05 10, COMMON WORK RESULTS FOR

BOILER PLANTS and STEAM GENERATION. Provide measurements for all rotating HVAC equipment of 373 watts (1/2 horsepower) and larger, including centrifugal/screw compressors, cooling towers, pumps, fans and motors.

B. Record initial measurements for each unit of equipment on test forms and submit a report to the Resident Engineer. Where vibration readings exceed the allowable tolerance Contractor shall be directed to correct the problem. The TAB agency shall verify that the corrections are done and submit a final report to the Resident Engineer.

3.9 SOUND TESTING

A. Perform and record required sound measurements in accordance with

Paragraph, QUALITY ASSURANCE in Section 23 05 41, NOISE and VIBRATION

CONTROL FOR HVAC PIPING and EQUIPMENT.

1. Take readings in rooms, approximately ten percent of all rooms. The

Resident Engineer may designate the specific rooms to be tested.

2. Provide chiller and cooling tower sound measurements. Refer to

Section 23 64 00, PACKAGED WATER CHILLERS and Section 23 65 00, COOLING TOWERS.

B. Take measurements with a calibrated sound level meter and octave band analyzer of the accuracy required by AABC, TABB or NEBB.

C. Sound reference levels, formulas and coefficients shall be according to

2019 ASHRAE Handbook, "HVAC Applications", Chapter 49, SOUND AND

VIBRATION CONTROL.

D. Determine compliance with specifications as follows:

1. When sound pressure levels are specified, including the NC Criteria in Section 23 05 41, NOISE and VIBRATION CONTROL FOR HVAC PIPING and

EQUIPMENT:

a. Reduce the background noise as much as possible by shutting off unrelated audible equipment.

100% Bid Documents

10-01-22

23 05 93 - 11

TESTING, ADJUSTING, AND BALANCING FOR HVAC

b. Measure octave band sound pressure levels with specified equipment "off."

c. Measure octave band sound pressure levels with specified equipment "on."

d. Use the DIFFERENCE in corresponding readings to determine the sound pressure due to equipment.

DIFFERENCE: 0 1 2 3 4 5 to 9 10 or More

FACTOR: 10 7 4 3 2 1 0

Sound pressure level due to equipment equals sound pressure level with equipment "on" minus FACTOR.

e. Plot octave bands of sound pressure level due to equipment for typical rooms on a graph which also shows noise criteria (NC) curves.

2. When sound power levels are specified:

a. Perform steps 1.a. thru 1.d., as above.

b. For indoor equipment: Determine room attenuating effect, i.e., difference between sound power level and sound pressure level.

Determined sound power level will be the sum of sound pressure level due to equipment plus the room attenuating effect.

c. For outdoor equipment: Use directivity factor and distance from noise source to determine distance factor, i.e., difference between sound power level and sound pressure level. Measured sound power level will be the sum of sound pressure level due to equipment plus the distance factor. Use 10 meters (30 feet) for sound level location.

3. Where sound pressure levels are specified in terms of dB(A), as in

Section 23 65 00, COOLING TOWERS, measure sound levels using the "A" scale of meter. Single value readings will be used instead of octave band analysis.

E. Where measured sound levels exceed specified level, the installing contractor or equipment manufacturer shall take remedial action approved by the Resident Engineer and the necessary sound tests shall be repeated.

F. Test readings for sound testing could go higher than 15 percent if determination is made by the Resident Engineer based on the recorded sound data.

100% Bid Documents

10-01-22

23 05 93 - 12

TESTING, ADJUSTING, AND BALANCING FOR HVAC

3.10 MARKING OF SETTINGS

Following approval of Tab final Report, the setting of all HVAC adjustment devices including valves, splitters and dampers shall be permanently marked by the TAB Specialist so that adjustment can be restored if disturbed at any time. Style and colors used for markings shall be coordinated with the Resident Engineer.

3.11 IDENTIFICATION OF TEST PORTS

The TAB Specialist shall permanently and legibly identify the location points of duct test ports. If the ductwork has exterior insulation, the identification shall be made on the exterior side of the insulation.

All penetrations through ductwork and ductwork…