The Architecture Puzzler
Created by Dave Guadagni
Architecture Puzzler #564
What are ball drop tests?
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Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2012, Dave Guadagni.
A dropping ball demolishes glazing at the Philadelphia Spectrum building in November 2010.
Photo: Rhys Asplundh
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