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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 />Basis of Design: Mason Model 30N. <br />V-9: 30N - 30N hd`� <br />2. Frame: Steel, fabricated for connection to threaded hanger rods and to allow for <br />a maximum of 30 degrees of angular hanger -rod misalignment without binding or <br />reducing isolation efficiency. <br />3. Outside Spring Diameter: Not less than 80 percent of the compressed height of <br />the spring at rated load. <br />4. Minimum Additional Travel: 50 percent of the required deflection at rated load. <br />5. Overload Capacity: Support 200 percent of rated load, fully compressed, without <br />deformation or failure. <br />6. Elastomeric Elements: Molded, oil -resistant rubber or neoprene. Steel -washer - <br />reinforced cup to support spring and bushing projecting through bottom of frame. <br />7. Self -centering hanger rod cap to ensure concentricity between hanger rod and <br />support spring coil. <br />C. Pipe Riser Resilient Support: All -directional, acoustical pipe anchor consisting of 2 steel <br />tubes separated by a minimum of 1/2-inch- thick, 60 durometer neoprene. Include steel <br />and neoprene vertical -limit stops arranged to prevent vertical travel in both directions. <br />Design support for a maximum load on the isolation material of 500 psi and for equal <br />resistance in all directions. <br />Basis of Design: Mason Model ADA. <br />D. Resilient Pipe Guides: Telescopic arrangement of 2 steel tubes separated by a minimum <br />of 1/2-inch- thick, 60-durometer neoprene. Factory set guide height with a shear pin to <br />allow vertical motion due to pipe expansion and contraction. Shear pin shall be <br />removable and reinsertable to allow for selection of pipe movement. Guides shall be <br />capable of motion to meet location requirements. <br />Basis of Design: Mason Model VSG. <br />2.2 ANCHOR BOLTS, WASHERS, AND BUSHINGS <br />A. Resilient Isolation Washers and Bushings: 1-piece, molded, bridge -bearing neoprene <br />complying with AASHTO M 251 and having a durometer rating of 50 with a flat washer <br />face. <br />VIBRATION AND SEISMIC CONTROLS FOR MECHANICAL PIPING AND 23 05 48 - 5 <br />EQUIPMENT <br />