Floating foundations vs. caisson (pile) foundations

See a new quieter and more concise version of this video at: www.youtube.com (rev Aug. 19, 2011 by JJ). Jim Janossy conducts a 7 minute illustrated discussion of early Chicago School of architecture "floating" foundations and the later-developed caisson foundations that replaced them for tall building construction. Update June 4, 2011: Thanks folks! I am gratified by this response and over 15000 views! I only created this as an aid for students in my Autumn "Explore Chicago" course at DePaul University and am surprised it has wider appeal! These are fun to make using simple software. See another of my courses at this qWikLink (URL alias): q123.us/200 this is CSC-200 at DePaul and we cover all sorts of sound, still, and video editing as well as computer games, animation, and other modern topics hands-on! Free e-book there.

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