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Eugene City Hall R32.19.04 Rev. B. September 9, 2003 <br /> <br />Figure 2-28 shows a large horizontal tank in the basement. It is saddle-supported, with <br />the saddles resting on steel channels that in turn rest on the floor. This tank should be <br />suitably restrained. <br /> <br /> Figure 2-28. Horizontal Tank <br /> <br /> The basement also houses two floor-mounted air compressors (adequate for seismic <br /> loads), and two heat exchangers (anchorage should be upgraded for seismic loads). <br /> <br /> There is a standby emergency generator located inside the building. Access to this room <br /> could not be made available during the site visit. City staff should confirm if the lead-acid <br /> batteries for this engine generator are unanchored / unrestrained. Under strong ground <br /> motion, unrestrained batteries will rock and possibly topple (partially), likely leading to <br /> battery malfunction. The loss of offsite power is likely to the site in a major earthquake <br /> for a period of 6 to 24 hours. If unrestrained, it is recommended that the batteries be <br /> suitably restrained. In addition, if the engine set is on vibration isolators similar to those <br /> in Figure 2-15, then these should be replaced or the skid pad of the engine generator set <br /> should be snubbed. Finally, the exhaust muffler should be configured to prevent <br /> excessive displacement and possible breakage under Z=0.3g, if the exhaust is not easily <br /> vented to the outside of the building. <br /> <br /> G&E Engineering Systems Inc. Page 22 <br /> <br /> <br />