Changing the face of Charleston : The unbuilding of the Grace and Pearman Bridges
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Unbuilding Highlights
(Apr 10)
Meeting St. Stories
(Jul 10 2006)
East Bay Stories
(Oct 10 2006)
Drum Island Stories
(Feb 17)
Pearman Bridge Stories
(Apr 3)
Grace Bridge Stories
(Apr 3)
Imposions: Prep and boom
(Mar 27)
Unbuilding Bridge Blog
(July 23 2006)
Unbuilding Challenges
(Mar 13)
Learning Links
(Feb 20)
Unbuilding Stories
(Mar 13)
Video and Sounds
(Feb 28)
February 2, 2006:
Unbuilding the base of Pearman pier D-24

After loading is complete, here is Ken setting up the receiver and thinking about connecting it to the ignition line

and then connecting

D-24 is ready - you can see the red iginition lines like a day's beard growing out of the top of the D-24 base

Here is the ignition sequence - single frames from the video. With your curious eyes, watch the top of the pier.

T = 0 msec

T = 67 msec: shock tubes light up on each end

T = 133 msec: and each link propagates toward the center

T = 200 msec

T = 567 msec: Note the rising water around the perimeter

 T = 33 msec

T = 100 msec: ignition propagating toward the center

T = 167 msec: first signs of detonation

T = 533 msec: increasing detonation

T = 600 msec
Sparky saved the day again with a wide angle view of the implosion

My high resolution images - I was slow on the trigger. Here you can see the post ignition upward movement of water around the pier.

which rapidly dissipates

When its all over - the guys on the Captain Gary pick us up and take us home

and the Captain Gary

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Attribution: C. Frank Starmer and Sparky Witte from http://oldcooperriverbridge.org