SECTION 230548 - VIBRATION AND SEISMIC CONTROLS FOR …

SECTION 230548 – VIBRATION AND SEISMIC CONTROLS FOR HVAC SYSTEMS. ... Top Plate and Adjustment Bolt: Threaded top plate with adjustment bolt and cap screw to fasten and level equipment. ... diameter and hanger housing lower hole sizes shall be large enough to permit hanger rod to swing through 30-degree arc before contracting housing. ................
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