All in a morning's work
CITRIS-to-Cory Bridge Installation on Feb. 14, 2009
A pedestrian bridge was set into place between Cory Hall and
the new CITRIS building in less than three hours. The bridge
will be open in mid-March, from the south-west corner of the
third floor of Cory. Below are pictures of the installation
process, and you can also watch a video of the bridge being
lifted into place (Windows Media). See a different
perspective on the installation with pictures
by
Carlo Sequin .
Before | |
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View from Cory, across to CITRIS |
The 10-ton bridge has an earthquake-resistant connection at the Cory end, resting on two beams and secured by cables. One of the cables is hanging on the right. The CITRIS end is fixed. |
Getting Ready | |
The crane comes in through Hearst Mining Circle |
Preparing the crane and the blue ropes that will suspend the bridge. Each rope is rated for 18,000 lbs. |
Meanwhile, the bridge is on its way from San Leandro, where it spent the night after traveling from Stockton. (photographer unidentified) |
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Temporary anchors are installed to secure safety lines for the crew, because... |
...it's a bit of a drop. |
Last-minute machining of one of the cable washers |
Adjusting one of the bridge cables |
Up and Over Davis Hall | |
To the ticking of the wench, the bridge rises. |
The bridge moves slowly over Davis Hall as crew members keep watch on the roof below. |
The bridge begins to rotate into east-west orientation. |
Full rotation achieved, the bridge begins its descent. |
Down and Gently Into Place | ||
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The bridge eases down between Davis and CITRIS halls. |
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Bolting Down | |
The Cory end of the bridge rests on beams, secured by cables bolted to the bridge's frame. |
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The Bridge Is Up | |
The First Pedestrian crosses the bridge. |
Removing the ropes |
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The ropes waiting to be hoisted off the bridge. |
View from Hearst Street | |
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The red crane is visible in the background. |
Pictures & video by Susan Calico,
Microlab/Marvell Lab
12/16/13