The Art of Tetman Callis

Some of the stories and poems may be inappropriate for persons under 16

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How tall towers can be brought down

March 10th, 2015 · No Comments

“Bending and buckling (deformation) of steel beams and columns occurs when the steel temperature exceeds approximately 538 degrees C (1000 degrees F). At elevated temperatures, steel exhibits a progressive loss of strength. When there is a greater fire exposure, the load required to cause deformation is reduced. Deformation is not the result of melting. A deformed element is not one that has melted during the fire, and therefore the occurrence of such deformation does not indicate that the material was heated above its melting temperature.” – Technical Committee on Fire Investigations, Sec., NFPA 921 Guide for Fire and Explosion Investigations (2011 Edition)

Tags: Politics & Law · The Forever War

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