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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 /> Critical velocity to prevent smoke backflow in a corridor from Thomas&#039;s relation, for five heat release rates. Based on Klote (2002), pp. 4-279–4-280.<br /> <br /> Original illustration for [[Critical velocity]], level 4 Expert.<br /> <br /> * Source basis: Klote (2002), pp. 4-279–4-280 (Equations 4 and 4a; Figure 4-12.8(b) shows 500 to 2,000 kW: redraw from the formula, do not copy that figure); Van Rossum (2027), §4.5<br /> * Alt text: Line chart of critical velocity falling with corridor width for five fire sizes from 150 kW to 2.5 MW.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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