Skyscrapers

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I Beam Sizes and Spans

Ikips.jpg

Failure Modes

  • Fire protective coating on floor beams, and flexible vertical columns were found in the WTC collapse, according to the official reports. [1]. Heat was from molten aluminum (20 tons of aluminum per plane) reacting with water. Molten aluminum in water are explosive. Lesson: do not build aluminum buildings [2].

Steel I-Beams

Table at https://amesweb.info/Profiles/Standard-Steel-I-Beam-Sizes-Chart.aspx