SECTION VIBRATION ISOLATION PART 1 - GENERAL 1.01 RELATED DOCUMENTS

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1 SECTION VIBRATION ISOLATION PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of Contract including General and Supplementary Conditions, Division 1 Specification Sections, and the Mechanical General Requirements Section apply to work of this Section, as if repeated herein SCOPE A. This Section describes noise and vibration control systems to be used in all phases of mechanical work OBJECTIVE A. The objective of this Section is to provide the necessary Specifications for the avoidance of excessive noise or vibration in the building due to the operation of machinery or equipment and/or due to interconnected piping, ductwork, conduit, or structure. B. Specific applications, features, or methods unique to a given phase of work will be delineated in other Divisions or Sections of the Specifications DESIGN CRITERIA A. Isolate all motor-driven mechanical equipment from the building structure and from the systems which they serve, to prevent equipment vibrations from being transmitted to the structure. B. Consider equipment weight distribution to provide uniform deflections. C. For equipment with variable speed capability, vibration isolation device shall be based upon the lowest speed.

2 1.05 CONTRACTOR RESPONSIBILITY A. Provide vibration isolation devices, frames, guides, and related material. B. Do not install any rotating mechanical equipment, associated piping, ductwork, etc., which makes rigid contact with the structure unless it is approved by the Architect. Structure includes slabs, beams, studs, walls, columns, lath, etc. C. Coordinate work with other trades to avoid rigid contact with the building. Inform other trades that follow, such as plastering or electrical, to avoid any contact which would reduce the efficiency of vibration isolation systems. D. Conflicts with other trades which will result in unavoidable contact with equipment, piping, etc., described herein, due to inadequate space, etc., shall be brought to the Architect's attention prior to installation. Corrective work necessitated by conflicts after installation shall be at the responsible Contractor's expense. E. Discrepancies between the Specifications and field conditions, changes required due to specific equipment selection, etc., shall be brought to the Architect's attention prior to installation. Corrective work necessitated by discrepancies after installation shall be at the Contractor's expense. F. Obtain inspection and approval from the Architect of any installation to be covered or enclosed prior to such closure. G. Obtain written and/or oral instructions from the vibration isolation manufacturer as to the proper installation and adjustment of vibration isolation devices. H. Correct, at no additional cost, any installation which is deemed defective in workmanship or materials by the Architect. I. The Contractor shall be responsible for proper operation of all systems, minor subsystems and services provided under this Section. He shall coordinate start-up procedures, calibration and system check-out with all subcontractors involved. System operational problems shall be diagnosed, and correctional procedures shall be initiated by various subcontractors involved, to bring the system into compliance with design requirements. Problems shall then be rechecked subsequent to completion of correctional work to verify that the system operates normally. Any remaining difficulties shall be brought to the attention of the Architect.

3 1.06 SUBMITTALS A. Submit shop drawings in accordance with General and Supplementary Conditions and General Mechanical Requirements Section B. Submit shop drawings of isolation devices indicating isolation materials, isolator heights both free and operating, isolator dimensions, deflections and isolation efficiency based on lowest operating speed. C. Submit flexible pipe connector shop drawing data, including maximum allowable temperature and pressure rating, overall face-to-face length, and elongation. In addition, include two test reports by independent consultants showing minimum reduction of 20 db in vibration acceleration, and 10 db in sound pressure levels at typical blade passage frequencies. D. Submit engineer's calculations for anchor/guide loads and isolator selection. E. Submit manufacturer's installation requirements. out. F. Submit verification of start-up procedures, calibration, and system check 1.07 COORDINATION A. Work under this Section must be coordinated with other structural, mechanical, and electrical work in order to accomplish interfacing necessary to provide a complete and operating system in conformance with intent of Contract Documents. PART 2 - PRODUCTS 2.01 ACCEPTABLE MANUFACTURERS A. Material unless specified otherwise 1. Amber-Booth Company 2. Caldyn 3. Korfund Company 4. Kinetics 5. Mason Industries 6. M.W. Sausee

4 B. Type 3-F, 4-F, and 5-F Flexible Pipe Connectors 2.02 MATERIALS 1. Griswold Controls 2. Flow Design, Inc. A. Design isolation devices for the equipment with which they are to be used. Materials used shall retain their isolation characteristics for the life of the equipment served. Elastomeric materials shall be industrial grade neoprene. Provide isolation devices subjected to weather with hot-dipped galvanized finish. B. Coordinate selection of devices with isolator and equipment manufacturer VIBRATION ISOLATION MOUNTING A. Type 1-M 1. Mason type WMW, neoprene waffle pads, 40 durometer. Select number and size of pads to accept the equipment operating weight evenly. B. Type 2-M (High Frequency Vibration) 1. Mason type ND or rails type DNR, double deflection neoprene mounts with cast-in metal inserts for bolting to equipment. 2. Both surfaces rib molded for skid resistance. On equipment such as small vent sets and close coupled pumps, steel rails shall be used above the mountings to compensate for the overhang. C. Type 3-M (Low Frequency Vibration) 1. Mason type SLFH combination spring and neoprene with rib molded base. Freestanding, laterally stable without any housing, complete with 1/2" neoprene acoustical friction pads between the baseplate and the support. 2. Where seismic vibration mounts are required, Mason type the SSLFH- housed single spring steel mounts shall be used. 3. Where seismic vibration mounts are required, Contractor shall have option of using Mason type SLF mounts in combination with a Mason type Z-1011 or Z-1225 all-directional seismic snubber.

5 4. Provide with leveling bolts rigidly bolted to the equipment. Springs shall have a minimum additional travel to solid equal to 50% of the rated deflection. Spring diameters shall be no less than 0.8 of the compressed height of the spring at rated load. D. Type 4-M 1. Mason type SLRH combination spring and neoprene with rib molded base similar to type 2-M mounts, except with a housing that includes vertical limit stops to prevent spring extension when weight is removed. 2. Installed and operating heights shall be the same. Maintain a minimum clearance of 1/2" around restraining bolts and between the housing and spring to eliminate interference with spring action. Limit stops shall be out of contact during normal operation VIBRATION ISOLATION HANGER A. Type 1-H 1. Mason type DNHS vibration hangers with a steel spring and 0.3" deflection neoprene element in series. Neoprene element shall be molded with a rod isolation bushing that passes through the hanger box. 2. Spring diameters and hanger box lower hole sizes shall be large enough to permit hanger rod to swing through a 30 degree arc before contacting the hole and short circuiting the spring. Springs shall have a minimum additional travel to solid equal to 50% of the rated deflection. B. Type 2-H 1. Mason type PCDNHS vibration hangers similar to Type 4-M, but precompressed to rated deflection to keep piping or equipment at a fixed elevation during installation. Design hangers with a release mechanism to free the spring after installation is complete and hanger is subjected to its full load. C. Type 4-H 1. Mason type W30 steel springs in a neoprene cup with a grommet to prevent short circuiting of the hanger rod. Provide load on the neoprene and prevent its extrusion.

6 2. Spring diameters and hanger box lower hold size to be large enough to permit the hanger rod to swing through a 30 degree arc before contacting the hole and short circuiting the spring. Springs to have a minimum additional travel to solid equal to 50% of the rated deflection. 3. Provide hangers with an eye bolt on the spring end and provision for attaching the housing to the flat iron duct straps VIBRATION ISOLATION PIPE ANCHORS AND GUIDES A. Pipe Anchors and Guides: 1. Mason type ADA or ADAH directional acoustical pipe anchors and guides for vertical piping, consisting of a telescopic arrangement of 2 sizes of steel tubing separated by a minimum half-inch thickness of heavy-duty neoprene and duct or neoprene isolation material. Vertical restraints shall prevent vertical travel in either direction. Allowable loads on the isolation materials shall not exceed 500 psi and the design shall be balanced for equal resistance in any direction. 2. Submittals shall include supporting calculations by a registered mechanical or civil engineer indicating anchor/guide loads and isolator selection. 2. Furnish thrust restraints complete with rods and angle brackets for attachment to both the equipment and ductwork or equipment and structure. Attach horizontal restraints at the centerline of thrust and symmetrically on either side of the unit VIBRATION ISOLATION FLEXIBLE PIPE CONNECTORS A. Requirements 1. Provide flexible connectors for piping connected to equipment mounted on vibration isolators and piping connected to rotating or reciprocating equipment.

7 PART 3 - EXECUTION 3.01 VIBRATION ISOLATION APPLICATION A. Refer to Equipment Schedules for "Type" and "Minimum Static Deflection." B. Piping Connected to Rotating or Reciprocating Equipment: Use flexible piping connections as scheduled. C. Horizontal Pipe Isolation. Provide Type 2-H hangers or Type 3-M mounts with deflections equal to the equipment isolation deflection at the first 3 support locations from the equipment. Provide Type 1-H hangers for piping at other locations within mechanical rooms or penthouses. D. Provide vibration isolation hangers for furnace/coil units and fans INSTALLATION A. Install vibration isolation devices and flexible pipe connectors in accordance with manufacturer's instructions. B. Install flexible pipe connections at right angles to displacement (horizontal and parallel to rotating equipment shafts) and on equipment side of shutoff valves. C) Flexible pipe connections and horizontal pipe isolation not required on equipment internally isolated and bolted rigid to structure. D. Equipment, ductwork and piping shall be seismically braced in accordance with drawings. SMACNA Guidelines, and all governing code authorities. **END OF SECTION**

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