VIBRO-ACOUSTICS VAV. (3) 8"ø VAV "x22"SA VAV PRINTER's 1111 VAV "x12"RA WORK AREA 1120 MED CONF ROOM.

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1 F/S F 2 F/S 20"x4"EA 9 24"x2"RA LOCKERS 23 FCU -02 PROCTOR 0 / M20C DISABILITY TESTING CENTER 0"x8"SA (3) VIBRO-ACOUSTICS 50 A2 2"x2"SA FINANCIAL AID A2 (5) NOISE CORRIDOR CONTROL "x6"SA A (2) 00 40"x22"SA A 50 DIS SERV DIS SERVICES DIRECTOR 2--2 OFFICE 04 2"x0"SA 06 2"x2"SA RA 2--6 RECYCLE A DIS SERV STORAGE 00 A (2) 25 38"x24"RA 50 A A 200 BURSAR CASHIERS 7 MEDIUM CONF 0 BURSARS OFFICE 8 A 00 PRINTER's "x20"SA MED CONF 9 A 00 WORK AREA 20 8"x4"SA A3 (6) 4"SA CIRCULATION 6 STAIR BURSAR STORAGE 2 A (2) FINANCIAL AID STORAGE 22 ID 23 4"x2"SA A2 0"ø ADMIN / RECR 24 REGISTRAR 25 FIN AID / SCHOLARSHIPS STUDENT 26 UNIVERSITY AFFAIRS COLLEGE INTER NATIONAL STUDENT SERVICES 29 CAREER SERVICES 30 CIRCULATION 3 0"ø A2 (2) 200 8"x4"SA CONV CUBBIE2"x0"SA 32 PRIVATE CONV (MEDIUM) SM CONV A STUDENT SERVICE CENTER ARENA 36 0"x0"SA "x2"SA 22"x6"SA 2--2 SM CONV 37 0"x2"SA CONV CUBBIE 33 PRIVATE CONV (MEDIUM) 38 A3 0"ø 0"ø A3 (2) Experts in Environmental Control and HVAC Acoustics/Aerodynamics 0"ø A3 (4) A (2) 00

2 CONSIDER THE ENVIRONMENTS control within a building is vital to maximizing productivity and well-being. Background sound levels and speech privacy are key aspects of the acoustical environment that must be addressed. As one of the major components of Indoor Environmental Quality (IEQ), good acoustics is critical to achieving occupant comfort. NOISE CONTROL IS IMPORTANT. from building systems equipment such as cooling towers, chillers, emergency generators, and exhaust fans can negatively impact both the indoor and outdoor environments. Outdoor noise control is especially important for complying with municipal property line noise ordinances. APPLYING NOISE CONTROL IS CHALLENGING. Applying noise control solutions requires thorough analysis to achieve desirable acoustics. Many variables need to be considered when identifying or engineering a noise control solution: aerodynamics, space, energy, Indoor Air Quality (IAQ), property lines, and the impact on systems and equipment. The best engineering practice to meet noise criteria is an integrated systems approach that incorporates all of these.

3 CONSIDER ALL NOISE CONTROL PATHS Seismic & Wind Loading Duct-borne Environmental Aerodynamic System Effects & Generated How much noise control do I need? Vibration Path CONSIDER PROJECT-SPECIFIC LIMITATIONS According to ASHRAE, HVAC noise problems occur when noise control is not considered at the design stage subjected to cost-cutting after the design stage, or not properly integrated in the system Structure-borne Breakout Radiated Duct-borne Breakout Duct-borne Structure-borne Materials of construction: Project requirements demand nonconventional materials of construction and fabrication methods. Criteria: Specific noise criteria need to be met depending on project requirements. Property Line: from outdoor equipment can be noisy enough to break municipal property line by-laws and result in fines, facility closures and lawsuits. Time and Cost Control: Each project has a unique duct design. Selecting a silencer with a limited range of sizes will increase time needed to redesign and install duct sections. This rooftop unit (RTU) is right over the occupied space. Am I going to have a noise problem? What noise control solution can achieve the design airflow and eliminate the need to add fan motor horsepower? There are wind/seismic loads on this RTU. How do I achieve code compliance? Pressure Drop and Energy Consumption: Misapplied or improperly selected silencers can significantly increase energy consumption. Adverse aerodynamic conditions can increase pressure drop from three to ten times more than what was originally accounted for. Space Restrictions: As real estate becomes more expensive, owners need to minimize the size of mechanical rooms in order to optimize usable/ rentable space. Designers just don t have the 5+ diameters of straight duct for a silencer selection to perform as tested and catalogued. There is duct above the space. Will I have a breakout problem on this job? According to ASHRAE, I don t have enough straight duct for a silencer. What should I do? I have limited ceiling space. Is there a noise control solution that will fit? There are surrounding buildings. Will the noise from the condensing unit reach nearby occupants? The unit sits on the roof. Should I be worried about structure-borne noise? The architect is limiting the curb height to 24 inches. Is there a noise control solution that will fit in the curb? Rooftop equipment and ASHRAE: ASHRAE 2 recommends noise and vibration control for rooftop applications. Some applications may require an isolated, noise control roof curb. Indoor Air Quality Control: Duct liner can degrade air quality with mold and fibers entering the air stream. Schaffer, Mark E. Controlling HVAC System and Vibration. ASHRAE Journal, vol. 35, June 993, pp American Society of Heating, Refrigerating and Air-Conditioning Engineers. and Vibration Control. 205 ASHRAE Handbook HVAC Applications, 205, pp Vibro-Acoustics Control Experts in Environmental Control and HVAC Acoustics/Aerodynamics 3

4 The V-A Way: Applied Engineering for Control Vibro-Acoustics leverages the Integrated Systems Approach when engineering a noise control solution. THE INTEGRATED SYSTEMS APPROACH is a design methodology that minimizes noise and vibration problems at the design stage. The entire system is considered, including how each component (fans, duct, silencers, etc.) interacts with the other. In the analysis of the system, both airborne and structure-borne noise are taken into account, as well as project specific requirements such as space, energy (pressure drop with system effects), project cost and time, and IAQ. This enables the user of the Integrated Systems Approach to engineer a solution that not only solves the noise problem but also addresses the specific requirements of the project. THE INTEGRATED SYSTEMS APPROACH Experts in Environmental Control and HVAC Acoustics/Aerodynamics 5

5 CONSIDER THE SYSTEM The Integrated Systems Approach Property Line Acoustic Barrier 55 dba Discharge HTL Access Section Inlet Cooling Tower Low pressure drop silencers for axial fans. Access sections built in for servicing. (EJE2) Flex s Duct Stand (SPS) Seismic Pipe Stands (VCR) Vibration Isolation Curb c/w Acoustic Barrier System Inlet c/w Weather Hood Self-supporting Stack s Discharge Doghouse with acoustic louvers and plenum Discharge Wind Restraints (SCSR) Seismically Restrained Spring Isolators Seismic Steel Base Air-cooled Condenser (CM) Isolators Steel Fan Base Acoustic Barrier Conference Room NC-30 (CT) Crosstalk HTL T File Storage Room NC-45 Shaft Floating Riser Isolators Open Office NC-40 (RED) R/A Lab NC-45 (CENM) Fume Hood Fume Hood (RNM) No Media Cleanable (RFL) Rectangular Film-lined Isolated Wall Transformer Mounted On (NP) Neo+ Neoprene Pads Electrical Room 00 dba Floating Floor (NH) Neoprene Hangers Engine Generator Set (RED) R/A Transitional Transitional silencers save space. Full height baffles minimize pressure drop. (SHR) Spring Hangers with Neoprene (BB) BulletBrace TM Cable Restraints (BB) BulletBrace TM Cable Restraints (SH) Spring Hangers (RD) Rectangular Exhaust Box Acoustic Fresh-air Intake Plenum (SRD) Outside Air (RD) Rectangular Return Air Duct Flex Mechanical Equipment Room 65 dba Pipe Flex AHU (AHCS) Thrust Restraint (EX-RD) (REMB) MoldBlock TM Internal Isolation Duct Flex Common Room NC-40 Classroom NC-25 (CT) Crosstalk Corridor NC-40 Support Rack with Rigid Restraint Private Office NC-30 (NP) Neo+ Neoprene Pads LEGEND s Acoustic Barriers, Plenums and Enclosures Control Curbs Vibration Isolation Restraint Systems Architectural Control Garage Exhaust (ACD) Discharge Cone Flex s Parking Garage 65 dba (CD) Inlet Circular (SRB) Seismic Restraint Bracket Boiler Exhaust Boiler Inline Pump (SH) Spring Hangers (SIPS) Seismic Inline Pump Stand (EJN2) Flex s (CIB) Inertia Base (CSR) Spring Isolators (BB) BulletBrace TM Cable Restraints Chiller (PSH) Precompressed Spring Hangers (EJN2) Flex Base-mounted Pump (CIB) Inertia Base (FS) Isolators Mechanical Equipment Room 80 dba Duct Flex (NP) Neo+ Neoprene Pads Library NC-30 Sil-Throw Air Distribution System Sil-Throw air distribution system for quiet spaces with high occupancy. 4 Vibro-Acoustics Control

6 The Lay-in Service WHY USE THE LAY-IN SERVICE FOR NOISE CONTROL? Eliminate risk with a guaranteed solution while saving time and money. Be proactive and lower costs. Quantify noiserelated issues at the design stage and provide solutions that meet project requirements. Vibro-Acoustics is dedicated to helping make the built environment a quieter place by offering our complimentary Lay-in Service. WE ARE NOISE CONTROL EXPERTS. Our acoustic and aerodynamic experts will work as an extension to your design team to help identify noise-related risks and recommend the best solution for the system. WE CONSIDER ALL PROJECT VARIABLES. We will recommend the optimal solution for your project s unique requirements, such as time, budget and space constraints, indoor air quality, and energy savings. WE GUARANTEE THE END RESULT. Since our calculations are based on the entire system, we guarantee that our solution will meet the noise criteria in the built environment. WE ARE COMMITTED TO GREAT BUILDINGS. We will start within 24 hours of receipt of complete information. A full Lay-in will be produced within two to three working days (depending on the size and complexity of the job). Save time and money. We will focus on designing noise control solutions for your project, provide ready-to-use documents to incorporate into your package, and work through every revision saving your team an average of 6 billable hours per project. Reduce risk and get a guarantee. Don t absorb the manufacturer s risk by selecting a product without analysis. We guarantee that our proposed solution will perform under any budget, time, energy, space, and IAQ limitations in the built environment. Improve the entire system. There is a solution for every project, system, and/or equipment. Add credibility and value to your projects by achieving a quiet environment. Lower operating costs. Do not misapply a standard product and add too much pressure drop. We will provide an applied solution at minimal pressure drop, including system effects. 6 Vibro-Acoustics Control Experts in Environmental Control and HVAC Acoustics/Aerodynamics 7

7 3 STEPS IN THE LAY-IN SERVICE Risk Assessment We will review and perform a complete HVAC system analysis of the acoustics and aerodynamics of the project and determine the level of risk for noise problems. Deliverable: A report that shows the results of the acoustical system analysis and, if needed, how much noise control is required to meet noise level criteria. Risk Assessment # Add Lay-in Number (e.g. 6523) Summary Project Name Project Name Based on our analysis there will be noise issues as tabulated below, if effective HVAC noise control measures are not adopted. Prepared for Consultant ABC, John Smith Following is a summary of the results of untreated duct-borne noise and breakout calculations: Indoor Prepared Criteria (NC) by Your Name Here Octave Band Center Frequency (Hz) Background Sound Level (db) without Control Target Unsilenced Break-out Excess System Space K 2K 4K 8K Revision History No AHU- Atrium Rev # Date Item(s) Revised Yes 3 AHU- Private Office October 207 Report Created No 0 AHU- Teleconferencing Outdoor Criteria (dba) Octave Band Center Frequency (Hz) Background Sound Level (db) without Control Target Unsilenced Break-in Excess System Receptor K 2K 4K 8K Yes 30 GE- 50 ft/0 degrees The analysis is performed to facilitate proper application of Vibro-Acoustics products, which cannot be obtained from a catalog, particularly with regards to system effect pressure drop and breakout noise control. These evaluations are not a substitute for an Acoustical Consultant s comprehensive advice on total building acoustical design requirements, including the HVAC system. See Appendix A for an explanation of the Vibro-Acoustics product application philosophy and how we complement the Acoustical Consultant. To locate an acoustical consultant in your area, click here. Please share this document with the Acoustical Consultant on your project and have them contact us with any questions. 3 Ensure Proper Application We specify where the solution should be located by laying in the solution onto your drawings. Deliverable: Marked-up project drawings illustrating noise control product locations. Tag Qty Fan System DS- Vibar Film lining DS-2 Vibar & Spacer lining Face Dimension Length Flow Velocity P.D.* P.D. incl. System Effects Dynamic Insertion Loss W (in) H (in) (in) (CFM) ft/min in wg in wg Vibro- Acoustics Model , REFL-MLV-FJ - L , RFL-MLV-FD - L9236 DS-3 0ID 30OD CNM-HV-F -L9236 Dimensions: duct dimension 0 in dia., outside casing dimensions 30 in wide x 30 in high. 2 Engineer the Best Solution Based on system needs, we select or engineer the best solution to meet the project s sound criteria. Deliverable: A projectspecific, optimized solution, complete with schedule, specification, and 3D renderings. We detail the acoustic performance, installed pressure drop at system design velocity, and special construction requirements. Notes,2 Get Started We make every effort to meet timelines. For a quick start, contact your local Vibro-Acoustics sales representative or info@vibro-acoustics.com with the following information: Equipment sound power levels by octave band (e.g., fans, AHUs, boxes) Drawing or sketch of system layout (we welcome CAD drawings) Project deadlines Optional: Desired sound criteria for occupied spaces. Otherwise, we can make recommendations based on ASHRAE Guidelines and/or typical city by-law requirements Optional: Known project requirements (time, space, energy, budget, IAQ, etc.) 8 Vibro-Acoustics Control Experts in Environmental Control and HVAC Acoustics/Aerodynamics 9

8 F 8"x6" A4 (3) M LIT-NC-00 24"x6"EA F/S D.5 CAMPUS HALL 050 4"x2"EA CAMPUS HALL WARE WASHING 097 A 200 ELEC T A ELEV 02 CAMPUS HALL STORAGE 3 C.5 B.8 CAMPUS HALL PREFUNCTION 064 4"x2"SA 50 A CAMPUS LOUNGE 066 AV EQUIP 063 TF -03 A 300 LARGE CONFERENCE 4 0"x8"SA STAIR "x2" 0"x6" A4 (3) C 8"x CORRIDOR 067 CAMPUS LOUNGE A2 0"ø 200 A3 B.3 VIBRO-ACOUSTICS 355 Apple Creek Blvd. Markham, ON L3R 9X7 Canada T TF E info@vibro-acoustics.com vibro-acoustics.com NOISE CONTROL / M20B