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9/19/2011 (w/Video)

posted Sep 22, 2011, 7:00 PM by Jacob David   [ updated Oct 31, 2011, 8:19 PM ]
- Wall demolitions were conducted for the public, as demonstrated in the following videos.  Unreinforced concrete masonry showed extensive brittle failure when hit with the battering ram.  The ram was only able to puncture holes in the "rubble wall", causing localized failure on the outer surface.

Brick Wall Test

Rubble Wall Test

- Initial tests on static loading were conducted.  Two hydraulic jacks were fixed to each wall corner.  Each was loaded in increments from 100 psi to 790 psi.  Displacement/deflection were recorded using:
  • Displacement gage frame (homegrown)
  • Video camera footage
  • Manual surveying techniques
  • 3D point cloud scanner (laser scanning)