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<p>Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity</p> <p><b>New page</b></p><div>== Summary ==<br /> Failure events in NIST&#039;s model of a long-span floor truss under assumed temperatures: the catenary stage starts at 565 °C, connection failures follow up to walk-off at 730 °C. Based on Zarghamee, Bolourchi, et al. (2005), pp. xxxviii–xxxix.<br /> <br /> Original illustration for [[Tensile membrane action]], level 4 Expert.<br /> <br /> * Source basis: Zarghamee, Bolourchi, et al. (2005), pp. xxxviii–xxxix (truss model C32T1 of Floor 96, WTC 1, assumed temperature history), p. 81 (failure sequence, tension of about 12 kip at about 600 °C, caveat)<br /> * Alt text: Timeline from 0 to 750 °C with failure events of a floor truss model, catenary action at 565 °C and walk-off at 730 °C.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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