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Orange County West Campus Office Building -HVAC <br />PDC Project 23020 Vibration and Seismic Controls for HVAC 23 05 48 - 2 <br />1.Select and locate isolators to produce uniform loading and deflection. Use a minimum of 4 <br />isolators to support each piece of equipment. <br />2.Select vibration isolation devices based on the lowest operating speed of equipment. <br />E.Piping Isolation: <br />1.Provide vibration isolators for piping supports: <br />a.Located in equipment rooms. <br />b.Located within 50 feet of connected vibration-isolated equipment and pressure- <br />regulating valve (PRV)stations. <br />2.Minimum Static Deflection: <br />a.First Three Supports Closest to Isolated Equipment: Same as static deflection of <br />equipment;maximum of 2 inch deflection required. <br />b.Remainder of Supports: 0.75 inch deflection unless otherwise indicated. <br />3.Suspended Piping,Nonseismic Applications: Use resilient material isolator hangers,spring <br />isolator hangers,or combination resilient material/spring isolator hangers. <br />4.Floor-Mounted Piping,Nonseismic Applications: Use open (unhoused)spring isolators. <br />2.02 VIBRATION ISOLATORS <br />A.Manufacturers: <br />1.Vibration Isolators: <br />a.Kinetics Noise Control,Inc <br />b.Mason Industries <br />c.Vibration Eliminator Company,Inc <br />d.The VMC Group/Amber Booth <br />e.Or Approved Equal <br />2.Source Limitations: Furnish vibration-isolators and associated accessories produced by a <br />single manufacturer and obtained from a single supplier. <br />B.General Requirements: <br />1.Resilient Materials for Vibration Isolators: Oil,ozone,and oxidant resistant. <br />2.Spring Elements for Spring Isolators: <br />a.Color code or otherwise identify springs to indicate load capacity. <br />b.Lateral Stability: Minimum lateral stiffness to vertical stiffness ratio of 0.8. <br />c.Designed to operate in the linear portion of their load versus deflection curve over <br />deflection range of not less than 50 percent above specified deflection. <br />d.Designed to provide additional travel to solid of not less than 50 percent of rated <br />deflection at rated load. <br />e.Selected to provide designed deflection of not less than 75 percent of specified <br />deflection. <br />f.Selected to function without undue stress or overloading. <br />C.Vibration Isolators for Nonseismic Applications: <br />1.Resilient Material Isolator Pads: <br />a.Description: Single or multiple layer pads utilizing elastomeric (e.g.neoprene,rubber) <br />isolator material. <br />b.Pad Thickness: As required for specified minimum static deflection;minimum 0.25 inch <br />thickness. <br />c.Multiple Layer Pads: Provide bonded,galvanized sheet metal separation plate between <br />each layer. <br />2.Resilient Material Isolator Mounts,Nonseismic: <br />a.Description: Mounting assemblies for bolting equipment to supporting structure utilizing <br />elastomeric (e.g.neoprene,rubber)isolator material;fail-safe type. <br />3.Resilient Material Isolator Hangers,Nonseismic: <br />a.Description: Isolator assembly designed for installation in hanger rod suspension <br />system utilizing elastomeric (e.g.neoprene,rubber)isolator material for the lower hanger <br />rod connection. <br />PART 3 EXECUTION <br />Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D