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KAISER PERMANENTE Site Prep #1 Electrical Service <br />ASC & Clinic (HUB) March 18, 2020 <br />Everett, WA Project No. 19.05002.00 <br />D. Ductwork Restraints: <br />1. Comply with requirements of SMACNA "Seismic Restraint Manual Guidelines for <br />Mechanical Systems." <br />2. Use Seismic Hazard Level A. <br />E. Attachments to Structure: <br />1. Install cables so they do not bend across edges of adjacent equipment or <br />building structure. <br />2. Install seismic -restraint devices using anchor bolts that meet building code <br />requirements for testing and approval. <br />3. Install bushing assemblies for anchor bolts for floor -mounted equipment, <br />arranged to provide resilient media between anchor bolt and oversize mounting <br />hole. <br />4. Install bushing assemblies for mounting bolts for wall -mounted equipment, <br />arranged to provide resilient media where equipment or equipment -mounting <br />channels are attached to wall. <br />5. If specific attachment to structure is not indicated, anchor bracing to structure at <br />flanges of beams at upper chords of bar joists, or at concrete members. Obtain <br />approval of the structural engineer prior to installation. <br />F. Drilled -in Anchors: <br />1. Identify position of reinforcing steel and other embedded items prior to drilling <br />holes for anchors. Do not damage existing reinforcing or embedded items during <br />coring or drilling. Notify the structural engineer if reinforcing steel or other <br />embedded items are encountered during drilling. Locate and avoid pre -stressed <br />tendons, electrical and telecommunications conduit, and gas lines. <br />2. Do not drill holes in concrete or masonry until concrete, mortar, or grout has <br />achieved full design strength. <br />3. Wedge Anchors: Protect threads from damage during anchor installation. <br />Heavy-duty sleeve anchors shall be installed with sleeve fully engaged in the <br />structural element to which anchor is to be fastened. <br />4. Set anchors to manufacturer's recommended torque, using a torque wrench. <br />3.4 ACCOMMODATION OF DIFFERENTIAL SEISMIC MOTION <br />A. Install V or U Type flexible loops in piping where they cross seismic joints, where <br />adjacent sections or branches are supported by different structural elements, and where <br />the connections terminate with connection to equipment that is anchored to a different <br />structural element from the one supporting the connections as they approach equipment <br />as indicated on the drawings. Comply with requirements in Division 23 Section "Hydronic <br />Piping" for piping flexible connections. <br />3.5 ADJUSTING <br />A. Adjust isolators after piping system is at operating weight. <br />B. Adjust limit stops on restrained spring isolators to mount equipment at normal operating <br />height. After equipment installation is complete, adjust limit stops so they are out of <br />contact during normal operation. <br />C. Adjust active height of spring isolators. <br />D. Adjust restraints to permit free movement of equipment within normal mode of operation. <br />VIBRATION AND SEISMIC CONTROLS FOR MECHANICAL PIPING AND 23 05 48 - 9 <br />EQUIPMENT <br />