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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Anchorage - R B Atwood Bldg |
| NSMP Station 8040 |
| Earthquakes recorded by this station |
| |
| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 61.2150 N |
| Longitude | 149.8930 W |
| Elevation (m) | 34 |
| Site Geology | Deep alluvium |
| Vs30 (m/sec) | 260 (measured) |
| Site Class | D |
| No. of Stories above/below ground | 20 above + 1 below ground |
| Plan Shape | Square - 39.6m x 39.6m |
| Base Dimensions | Square - 39.6m x 39.6m |
| Typical Floor Dimensions | Square - 39.6m x 39.6m |
| Design Date | 1979-1980 |
| Instrumentation | 32 channels within building and associated surface and downhole array of 21 channels |
| Vertical Load Carrying System | Steel Moment Resisting framed columns |
| Lateral Force Resisting System | Steel Moment Resisting Frame with 14.6m x 14.6m center steel shear-walled core |
| Foundation Type | No piles, 1.52m thick reinforced concrete perimeter mat interconnected with grade beams |
| Remarks | Information as published from the following reference: Çelebi, M. (2006). Recorded earthquake responses from the integrated seismic monitoring network of the Atwood Building, Anchorage, Alaska, Earthquake Spectra, 22(4), 847-864. Also see videos at: https://www.youtube.com/watch?v=Nt0m5JWa62w as visualization of shaking during 2016 Iniskin EQ and https://youtu.be/9MlvLdnwLY4 as visualization of shaking during 2018 Anchorage EQ. |