U.S. Army Corps of Engineers - Installation of Strong Motion Seismic Instrument



The Omaha District of the U.S. Army Corps of Engineers required the purchase of high dynamic range motion accelerographs and ancillary equipment for installation at various dam sites in the North and South Dakota region. The Kinnemetrics ETNA model was specified so that the accelerograph would be consistent with those at the other Omaha District Dams, which was required for software compatibility, data consistency, and servicing purposes.
Prior to procuring seismic units, ADH submitted schematic plans for USACE approval. ADH then procured all required equipment and coordinated with the USACE POC and Dam Project office personal to ensure safe receipt of the equipment as well as logistics for site access. ADH constructed, on site, concrete pads, then installed strong motion sensors and ancillary equipment (batteries, charge controllers, connection cables, etc.) in the steel enclosures; solar panels; a grounding rods; and security fences. The systems were calibrated per manufacturers’ specifications and tested for operation.
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