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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 /> Midspan tension in a sagging floor strip as a multiple of the total load qL, against the sag-to-span ratio, for residual moments of 0, 0.25 and 0.5 times qL²/8. The marked point is the World Trade Center truss model. Based on Zarghamee, Kitane, et al. (2005), p. 311, and Zarghamee, Bolourchi, et al. (2005), p. xxxiii.<br /> <br /> Original illustration for [[Tensile membrane action]], level 4 Expert.<br /> <br /> * Source basis: Zarghamee, Kitane, et al. (2005), p. 311 (formula, sag of the truss model); Zarghamee, Bolourchi, et al. (2005), p. xxxiii (60 ft span); calculation by Fire Safety Academy<br /> * Alt text: Line chart: floor tension falls as the sag grows, with curves for no, a quarter and half residual moment and a marked point at a sag of L/17.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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