A. Basic Requirements: Provisions of Section 15010, BASIC MECHANICAL REQUIREMENTS are a part of this Section.

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1 SECTION VIBRATION ISOLATION PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Basic Requirements: Provisions of Section 15010, BASIC MECHANICAL REQUIREMENTS are a part of this Section SUMMARY A. General: Provide vibration hangers and isolation supports for equipment and piping as required to prevent transmission of vibration and structureborne noise to building structure ADDITIONAL REQUIREMENTS A. Related Sections: Other Sections of Division 15 which relate to the requirements of this Section may include but are not limited to the following: 1.02 SUBMITTAL , BASIC MECHANICAL MATERIALS AND METHODS , PUMPS , PLUMBING EQUIPMENT , HYDRONIC PIPING SYSTEM , AIR HANDLING UNIT , FANS , DUCTWORK , PERFORMANCE VERIFICATION A. General: Refer to paragraph entitled "SUBMITTAL" in Section In addition to those requirements, submit for review the following data: 1. Manufacturers Literature: a. Dimensional outline drawing for each vibration isolator. b. Spring diameter, free spring height, solid spring height, deflection, spring constant and efficiency for each spring isolator. c. Maximum design rated load for each spring isolator. 2. Performance Data: a. Maximum deflection at rated load. b. Load-versus-deflection curve. VIBRATION ISOLATION

2 2. Installation Instructions: a. Manufacturer's printed installation instructions including copies shipped with the isolators. b. Pre-adjustment procedure, intended to control direction of pipe movement and final operating deflection of the springs APPLICABLE STANDARDS A. General: All equipment, material, accessories, methods of construction and reinforcement, finish quality, workmanship and installation shall be in compliance with the paragraph entitled "Code Compliance" in Section B. Acceptance: All vibration isolation equipment shall be both recommended by the manufacturer and acceptable to the Architect for each particular application on this project. C. Elastomeric Isolators: Elastomeric isolators shall comply with ASTM D2240. PART 2 - PRODUCTS 2.01 GENERAL A. Manufacturers: Refer to paragraph entitled "MANUFACTURERS" in Section Vibration isolation equipment shall be provided by a single manufacturer BASIC REQUIREMENTS A. Location: Unless otherwise noted, spring type vibration isolators shall be used for all motor driven equipment. The vibration isolation manufacturer shall determine the amount of spring deflection required for each isolator to achieve optimum performance, prevent the transmission of objectionable vibration and meet noise criteria indicated. B. Selection: Unit designations are indicated in the section describing the equipment to be isolated. Each of the following basic isolators may not be applicable to a specific installation application. C. Operating Range: Isolators shall be selected to operate within the linear portion of their load-versus-deflection curve. D. Indication: Vibration isolators shall have known undeflected heights or calibration markings so the amount of deflection can be determined when carrying load. VIBRATION ISOLATION

3 2.02 SUPPORTS A. Equipment: 1. Type EVS-2: Neoprene pads; waffle or ribbed pattern neoprene pads shall be fabricated from 40 or 50 Durometer neoprene. 40 Durometer pad loading shall not exceed 60 pounds per square inch or 90 pounds per square inch for a 50 Durometer pad. a. Manufacturer and Model Number: Mason Industries Type W 2.04 PIPE CONNECTORS A. General: Flexible connectors shall be provided for all piping connections to rotating equipment. B. Internal Diameter: Connectors shall have the same internal diameter as the pipe in which it is installed (not necessarily internal diameters of inlets or outlets of equipment). C. Recommended Application: Flexible connectors shall both be recommended by the manufacturer and acceptable to the Architect for handling the conveyed fluid at all conditions (maximums and minimums of temperatures, pressures, velocities, etc.) encountered for each particular application. D. Design Requirements: Connectors shall be designed to absorb the combination of vibratory and expansion or contraction motions (lateral and axial and angular) encountered at each installation point (for example, do not use hose type where axial motion is encountered at the installation point unless so recommended by the manufacturer and acceptable to the Architect). E. Allowable Displacement: The allowable displacement of the flexible connector in all directions shall be greater than the maximum deflection in the same relative direction. The stiffness of the flexible connector shall be less than the stiffness of the isolators. F. Hose: 1. Type PVT-1: 304 or 316 Stainless steel hose type; rated to withstand 180 degrees F. operating temperature and 150 psig working pressure; have flanges except 2-1/2 inch and smaller sizes may have screw type fittings installed with a union at one end or with screw-on flanges at both ends; net flexible lengths shall be at least 6 pipe diameters for pipe up to 5 inch ID and not less than 36 inches VIBRATION ISOLATION

4 for pipe 6 inch ID and greater; corrugated bellows with stainless steel wire braid restraining sheath. PART 3 - EXECUTION 3.01 GENERAL A. Installation: Isolators shall be installed in strict accordance with the manufacturer's instructions and shall be adjusted prior to requesting final inspection or the performance of any vibration testing specified. If, in the opinion of the Architect, objectionable noise or vibration is produced or transmitted, necessary changes or additions shall be performed to eliminate the noise and vibration without additional cost to the Owner. B. Corrosion Protection: Steel components shall be phosphated and painted. All nuts, bolts and washers shall be zinc-electroplated. Structural steel bases shall be thoroughly cleaned of welding slag and primed with zinc-chromate or metal etching primer. C. Weather Protection: All isolators exposed to weather shall have steel parts PVC coated, neoprene coated or hot-dip galvanized. Aluminum components shall be etched and painted. Nuts, bolts and washers shall be zinc-electroplated. D. Positioning: Each item of equipment (machinery, piping, etc.) which is required to have vibration isolation equipment shall rest in its intended, operating position (i.e; exactly level, etc.) after installation of vibration isolation equipment. Acceptance of such vibration isolation equipment by the Architect shall not constitute a waiver of this responsibility. E. Pads: Rotating or vibrating equipment which is specified to rest on concrete housekeeping pads shall have minimum 5/16 inch thick Type EVS-2 isolation pads unless otherwise indicated. Loading shall not exceed manufacturer's recommended rating. F. Cleaning: Prior to start-up, clean out all foreign matter between isolators or bases and equipment and verify there are no isolation short-circuits in the installation PIPING IN MECHANICAL EQUIPMENT AND AIR HANDLING UNIT ROOMS A. General: 1. Isolators for equipment and piping are described elsewhere in this division. The vibration isolation manufacturer shall coordinate the selection of piping supports with equipment supports to provide a carefully engineered system designed to accommodate expansion VIBRATION ISOLATION

5 and contraction without excessive stress or misalignment at equipment connections or in the piping. 2. Temporary anchors, where required, shall be installed to permit preadjustment of springs in risers. 3. Permanent limit stops shall be installed to prevent excessive vertical motion of risers in the event water is drained from system. Locations and other details of these limit stops shall be submitted to the Architect for acceptance. 4. Piping connected to vibration isolated equipment shall not strain or force out of alignment the vibration isolators supporting the basic equipment, nor shall pipes restrict such equipment from "floating" freely on its respective vibration isolation system. 5. Piping connected to vibrating equipment shall not physically contact any building construction or non-isolated systems or components. 6. The weight of the pipe shall not be carried by walls through which the pipe passes. B. Isolator Locations: 1. Hanger Boxes: Isolators shall be installed with the hanger box attached to or hung as close as possible to the structure. Hanger rods shall be aligned to clear the hanger box EQUIPMENT ISOLATION A. Vibration Measurement: No vibration amplitude measurement at driving (motor) or driven (pump, fan, etc.) speeds shall exceed manufacturers recommended values. No axial vibration shall exceed maximum radial (perpendicular to shaft) vibration at any bearing or measuring location. In no event shall any rotating equipment exceed 0.05 inches/second rms vibration amplitude under normal operating conditions. Whenever rotational speed is measured as the disturbing frequency, the lowest speed in the system shall be used. END OF SECTION VIBRATION ISOLATION