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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> SECTION 23 05 48 <br /> VIBRATION AND SEISMIC CONTROLS FOR HVAC <br /> PART 1 GENERAL <br /> 1.01 SECTION INCLUDES <br /> A. Vibration isolation requirements. <br /> B. Vibration isolators. <br /> 1.02 REFERENCE STANDARDS <br /> A. ASHRAE (HVACA) -ASHRAE Handbook- HVAC Applications; Most Recent Edition Cited by <br /> Referring Code or Reference Standard. <br /> 1.03 SUBMITTALS <br /> A. See Section 01 30 00-Administrative Requirements, for submittal procedures. <br /> B. Product Data: Provide manufacturer's standard catalog pages and data sheets for products, <br /> including materials, fabrication details, dimensions, and finishes. <br /> 1. Vibration Isolators: Include rated load capacities and deflections; include information on color <br /> coding or other identification method for spring element load capacities. <br /> C. Shop Drawings-Vibration Isolation Systems: <br /> 1. Include dimensioned plan views and sections indicating proposed arrangement of vibration <br /> isolators; indicate equipment weights and static deflections. <br /> 1.04 QUALITY ASSURANCE <br /> A. Comply with applicable building code. <br /> 1.05 DELIVERY, STORAGE, AND HANDLING <br /> A. Receive, inspect, handle, and store products in accordance with manufacturer's instructions. <br /> PART 2 PRODUCTS <br /> 2.01 VIBRATION ISOLATION REQUIREMENTS <br /> A. Provide vibration isolation systems to reduce vibration transmission to supporting structure from <br /> vibration-producing HVAC equipment and/or HVAC connections to vibration-isolated equipment. <br /> B. Comply with applicable general recommendations of ASHRAE (HVACA), where not in conflict with <br /> other specified requirements: <br /> C. General Requirements: <br /> 1. Select vibration isolators to provide required static deflection. <br /> 2. Select vibration isolators for uniform deflection based on distributed operating weight of actual <br /> installed equipment. <br /> 3. Select vibration isolators for outdoor equipment to comply with wind design requirements. <br /> D. Equipment Isolation: As indicated on drawings. <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/or <br /> pressure-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, Non-Seismic Applications: Use resilient material isolator hangers, spring <br /> isolator hangers, or combination resilient material/spring isolator hangers. <br /> 4. Floor-Mounted Piping, Non-Seismic Applications: Use open (unhoused)spring isolators. <br /> F. Thrust Restraint Applications: <br /> 1. Use thrust restraints to resist horizontal motion due to thrust for fan heads, suspended fans, <br /> and base-mounted and suspended air handling equipment operating at 2.0 inches wg or <br /> greater total static pressure. <br /> PDC Project 18102 VIBRATION AND SEISMIC 23 05 48- 1 <br /> 12/17/2018 CONTROLS FOR HVAC <br />