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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 /> Evacuation hand calculation: 300 people divided over four stairs; the 1.6 m stairs govern, giving 5 s + 63 s + 10 s = 78 s. Based on Van Rossum (2027), §7.5.<br /> <br /> Original vector illustration for [[Hand calculations]], level 2 Intermediate.<br /> <br /> * Source basis: Van Rossum (2027), §7.5 (eight steps and worked example)<br /> * Alt text: Floor plan with 300 people and four stairs of two widths, and a time bar of 5 s walking, 63 s passing the stair and 10 s walking.<br /> <br /> == Licensing ==<br /> New drawing by Fire Safety Academy. © Fire Safety Academy.</div>

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