PEER 2007 Seismic Design Competition Rules.pdf
PEER 2007 Seismic Design Competition Rules.pdf
PEER 2007 Seismic Design Competition Rules.pdf
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(a.) Example of insufficient support for threaded bars that prevents the requisite<br />
tightening of the nuts, thereby permitting the bars to move relative to the structure<br />
during shaking. Vertical columns at the location of threaded bars would have<br />
facilitated weight attachment, including tightening of the nuts to prevent rolling<br />
and sliding of the bars during shaking.<br />
Accelerometer<br />
Vertical Columns at Threaded<br />
Bar Locations<br />
Threaded Bar Weights (2005<br />
<strong>Competition</strong>)<br />
(b.) Example of an ideal support for threaded bars. Vertical columns facilitated weight<br />
attachment, and prevented rolling and sliding of the bars during shaking. Photo taken at<br />
2005 competition, which had a different threaded bar weight distribution than 2006.<br />
Figure 4-3: Typical Weight Attachment<br />
Undergraduate <strong>Seismic</strong> <strong>Design</strong> <strong>Competition</strong> 20
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